Bug: timer going backward on a dual core

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* Bug: timer going backward on a dual core
@ 2005-10-28 19:09 Claudio Scordino
  2005-10-28 19:30 ` john stultz
  0 siblings, 1 reply; 8+ messages in thread
From: Claudio Scordino @ 2005-10-28 19:09 UTC (permalink / raw)
  To: linux-kernel, kernelnewbies

Hi all.

We have a dual-core AMD64 with the new kernel 2.6.14 and the 
timer goes backward...


CONFIGURATION:

Kernel: 2.6.14
Distribution: Gentoo Linux 2005.0
Processor: Athlon 64 x2 4200+ (dual core)
Motherboard: Abit KN8
Memory: 1GB PC3200


PROBLEM:

gettimeofday goes backward and returns values that are not monotonic,
giving values that are smaller than values returned before.

The system has been tested with timer as PIT, PIT/TSC and PM and the
problem occurs with all the configurations. 

Here is the config file that we used for the PM configuration.

Any suggestion ?

Thanks,

                 Claudio


#
# Automatically generated make config: don't edit
# Linux kernel version: 2.6.14
# Fri Oct 28 11:40:11 2005
#
CONFIG_X86_64=y
CONFIG_64BIT=y
CONFIG_X86=y
CONFIG_SEMAPHORE_SLEEPERS=y
CONFIG_MMU=y
CONFIG_RWSEM_GENERIC_SPINLOCK=y
CONFIG_GENERIC_CALIBRATE_DELAY=y
CONFIG_X86_CMPXCHG=y
CONFIG_EARLY_PRINTK=y
CONFIG_GENERIC_ISA_DMA=y
CONFIG_GENERIC_IOMAP=y
CONFIG_ARCH_MAY_HAVE_PC_FDC=y

#
# Code maturity level options
#
CONFIG_EXPERIMENTAL=y
CONFIG_CLEAN_COMPILE=y
CONFIG_LOCK_KERNEL=y
CONFIG_INIT_ENV_ARG_LIMIT=32

#
# General setup
#
CONFIG_LOCALVERSION=""
CONFIG_LOCALVERSION_AUTO=y
CONFIG_SWAP=y
CONFIG_SYSVIPC=y
CONFIG_POSIX_MQUEUE=y
# CONFIG_BSD_PROCESS_ACCT is not set
CONFIG_SYSCTL=y
# CONFIG_AUDIT is not set
CONFIG_HOTPLUG=y
CONFIG_KOBJECT_UEVENT=y
CONFIG_IKCONFIG=y
CONFIG_IKCONFIG_PROC=y
# CONFIG_CPUSETS is not set
CONFIG_INITRAMFS_SOURCE=""
# CONFIG_EMBEDDED is not set
CONFIG_KALLSYMS=y
CONFIG_KALLSYMS_ALL=y
# CONFIG_KALLSYMS_EXTRA_PASS is not set
CONFIG_PRINTK=y
CONFIG_BUG=y
CONFIG_BASE_FULL=y
CONFIG_FUTEX=y
CONFIG_EPOLL=y
CONFIG_SHMEM=y
CONFIG_CC_ALIGN_FUNCTIONS=0
CONFIG_CC_ALIGN_LABELS=0
CONFIG_CC_ALIGN_LOOPS=0
CONFIG_CC_ALIGN_JUMPS=0
# CONFIG_TINY_SHMEM is not set
CONFIG_BASE_SMALL=0

#
# Loadable module support
#
CONFIG_MODULES=y
CONFIG_MODULE_UNLOAD=y
CONFIG_MODULE_FORCE_UNLOAD=y
CONFIG_OBSOLETE_MODPARM=y
# CONFIG_MODVERSIONS is not set
# CONFIG_MODULE_SRCVERSION_ALL is not set
CONFIG_KMOD=y
CONFIG_STOP_MACHINE=y

#
# Processor type and features
#
CONFIG_MK8=y
# CONFIG_MPSC is not set
# CONFIG_GENERIC_CPU is not set
CONFIG_X86_L1_CACHE_BYTES=64
CONFIG_X86_L1_CACHE_SHIFT=6
CONFIG_X86_TSC=y
CONFIG_X86_GOOD_APIC=y
# CONFIG_MICROCODE is not set
CONFIG_X86_MSR=y
CONFIG_X86_CPUID=y
CONFIG_X86_IO_APIC=y
CONFIG_X86_LOCAL_APIC=y
CONFIG_MTRR=y
CONFIG_SMP=y
# CONFIG_SCHED_SMT is not set
CONFIG_PREEMPT_NONE=y
# CONFIG_PREEMPT_VOLUNTARY is not set
# CONFIG_PREEMPT is not set
# CONFIG_PREEMPT_BKL is not set
CONFIG_K8_NUMA=y
# CONFIG_NUMA_EMU is not set
CONFIG_ARCH_DISCONTIGMEM_ENABLE=y
CONFIG_NUMA=y
CONFIG_ARCH_DISCONTIGMEM_DEFAULT=y
CONFIG_ARCH_SPARSEMEM_ENABLE=y
CONFIG_SELECT_MEMORY_MODEL=y
# CONFIG_FLATMEM_MANUAL is not set
CONFIG_DISCONTIGMEM_MANUAL=y
# CONFIG_SPARSEMEM_MANUAL is not set
CONFIG_DISCONTIGMEM=y
CONFIG_FLAT_NODE_MEM_MAP=y
CONFIG_NEED_MULTIPLE_NODES=y
# CONFIG_SPARSEMEM_STATIC is not set
CONFIG_HAVE_ARCH_EARLY_PFN_TO_NID=y
CONFIG_NR_CPUS=2
# CONFIG_HOTPLUG_CPU is not set
CONFIG_HPET_TIMER=y
CONFIG_X86_PM_TIMER=y
CONFIG_HPET_EMULATE_RTC=y
CONFIG_GART_IOMMU=y
CONFIG_SWIOTLB=y
CONFIG_X86_MCE=y
# CONFIG_X86_MCE_INTEL is not set
CONFIG_PHYSICAL_START=0x100000
# CONFIG_KEXEC is not set
CONFIG_SECCOMP=y
# CONFIG_HZ_100 is not set
CONFIG_HZ_250=y
# CONFIG_HZ_1000 is not set
CONFIG_HZ=250
CONFIG_GENERIC_HARDIRQS=y
CONFIG_GENERIC_IRQ_PROBE=y
CONFIG_ISA_DMA_API=y
CONFIG_GENERIC_PENDING_IRQ=y

#
# Power management options
#
CONFIG_PM=y
# CONFIG_PM_DEBUG is not set

#
# ACPI (Advanced Configuration and Power Interface) Support
#
CONFIG_ACPI=y
CONFIG_ACPI_AC=y
CONFIG_ACPI_BATTERY=y
CONFIG_ACPI_BUTTON=y
CONFIG_ACPI_VIDEO=y
CONFIG_ACPI_HOTKEY=y
CONFIG_ACPI_FAN=y
CONFIG_ACPI_PROCESSOR=y
CONFIG_ACPI_THERMAL=y
CONFIG_ACPI_NUMA=y
# CONFIG_ACPI_ASUS is not set
# CONFIG_ACPI_IBM is not set
CONFIG_ACPI_TOSHIBA=y
CONFIG_ACPI_BLACKLIST_YEAR=2001
CONFIG_ACPI_DEBUG=y
CONFIG_ACPI_EC=y
CONFIG_ACPI_POWER=y
CONFIG_ACPI_SYSTEM=y
# CONFIG_ACPI_CONTAINER is not set

#
# CPU Frequency scaling
#
CONFIG_CPU_FREQ=y
CONFIG_CPU_FREQ_TABLE=y
# CONFIG_CPU_FREQ_DEBUG is not set
CONFIG_CPU_FREQ_STAT=y
# CONFIG_CPU_FREQ_STAT_DETAILS is not set
# CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE is not set
CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE=y
# CONFIG_CPU_FREQ_GOV_PERFORMANCE is not set
# CONFIG_CPU_FREQ_GOV_POWERSAVE is not set
CONFIG_CPU_FREQ_GOV_USERSPACE=y
# CONFIG_CPU_FREQ_GOV_ONDEMAND is not set
# CONFIG_CPU_FREQ_GOV_CONSERVATIVE is not set

#
# CPUFreq processor drivers
#
CONFIG_X86_POWERNOW_K8=y
CONFIG_X86_POWERNOW_K8_ACPI=y
# CONFIG_X86_SPEEDSTEP_CENTRINO is not set
CONFIG_X86_ACPI_CPUFREQ=y

#
# shared options
#
# CONFIG_X86_ACPI_CPUFREQ_PROC_INTF is not set
# CONFIG_X86_SPEEDSTEP_LIB is not set

#
# Bus options (PCI etc.)
#
CONFIG_PCI=y
CONFIG_PCI_DIRECT=y
CONFIG_PCI_MMCONFIG=y
CONFIG_UNORDERED_IO=y
CONFIG_PCIEPORTBUS=y
CONFIG_HOTPLUG_PCI_PCIE=y
# CONFIG_HOTPLUG_PCI_PCIE_POLL_EVENT_MODE is not set
CONFIG_PCI_MSI=y
# CONFIG_PCI_LEGACY_PROC is not set
# CONFIG_PCI_DEBUG is not set

#
# PCCARD (PCMCIA/CardBus) support
#
# CONFIG_PCCARD is not set

#
# PCI Hotplug Support
#
CONFIG_HOTPLUG_PCI=y
# CONFIG_HOTPLUG_PCI_FAKE is not set
# CONFIG_HOTPLUG_PCI_ACPI is not set
# CONFIG_HOTPLUG_PCI_CPCI is not set
# CONFIG_HOTPLUG_PCI_SHPC is not set

#
# Executable file formats / Emulations
#
CONFIG_BINFMT_ELF=y
# CONFIG_BINFMT_MISC is not set
CONFIG_IA32_EMULATION=y
# CONFIG_IA32_AOUT is not set
CONFIG_COMPAT=y
CONFIG_SYSVIPC_COMPAT=y
CONFIG_UID16=y

#
# Networking
#
CONFIG_NET=y

#
# Networking options
#
CONFIG_PACKET=y
# CONFIG_PACKET_MMAP is not set
CONFIG_UNIX=y
# CONFIG_NET_KEY is not set
CONFIG_INET=y
CONFIG_IP_MULTICAST=y
# CONFIG_IP_ADVANCED_ROUTER is not set
CONFIG_IP_FIB_HASH=y
# CONFIG_IP_PNP is not set
# CONFIG_NET_IPIP is not set
# CONFIG_NET_IPGRE is not set
# CONFIG_IP_MROUTE is not set
# CONFIG_ARPD is not set
# CONFIG_SYN_COOKIES is not set
# CONFIG_INET_AH is not set
# CONFIG_INET_ESP is not set
# CONFIG_INET_IPCOMP is not set
# CONFIG_INET_TUNNEL is not set
CONFIG_INET_DIAG=y
CONFIG_INET_TCP_DIAG=y
# CONFIG_TCP_CONG_ADVANCED is not set
CONFIG_TCP_CONG_BIC=y
CONFIG_IPV6=y
# CONFIG_IPV6_PRIVACY is not set
# CONFIG_INET6_AH is not set
# CONFIG_INET6_ESP is not set
# CONFIG_INET6_IPCOMP is not set
# CONFIG_INET6_TUNNEL is not set
# CONFIG_IPV6_TUNNEL is not set
# CONFIG_NETFILTER is not set

#
# DCCP Configuration (EXPERIMENTAL)
#
# CONFIG_IP_DCCP is not set

#
# SCTP Configuration (EXPERIMENTAL)
#
# CONFIG_IP_SCTP is not set
# CONFIG_ATM is not set
# CONFIG_BRIDGE is not set
# CONFIG_VLAN_8021Q is not set
# CONFIG_DECNET is not set
# CONFIG_LLC2 is not set
# CONFIG_IPX is not set
# CONFIG_ATALK is not set
# CONFIG_X25 is not set
# CONFIG_LAPB is not set
# CONFIG_NET_DIVERT is not set
# CONFIG_ECONET is not set
# CONFIG_WAN_ROUTER is not set
# CONFIG_NET_SCHED is not set
# CONFIG_NET_CLS_ROUTE is not set

#
# Network testing
#
# CONFIG_NET_PKTGEN is not set
# CONFIG_HAMRADIO is not set
# CONFIG_IRDA is not set
# CONFIG_BT is not set
# CONFIG_IEEE80211 is not set

#
# Device Drivers
#

#
# Generic Driver Options
#
CONFIG_STANDALONE=y
CONFIG_PREVENT_FIRMWARE_BUILD=y
# CONFIG_FW_LOADER is not set
# CONFIG_DEBUG_DRIVER is not set

#
# Connector - unified userspace <-> kernelspace linker
#
# CONFIG_CONNECTOR is not set

#
# Memory Technology Devices (MTD)
#
# CONFIG_MTD is not set

#
# Parallel port support
#
CONFIG_PARPORT=y
# CONFIG_PARPORT_PC is not set
# CONFIG_PARPORT_GSC is not set
CONFIG_PARPORT_1284=y

#
# Plug and Play support
#
CONFIG_PNP=y
# CONFIG_PNP_DEBUG is not set

#
# Protocols
#
CONFIG_PNPACPI=y

#
# Block devices
#
# CONFIG_BLK_DEV_FD is not set
# CONFIG_PARIDE is not set
# CONFIG_BLK_CPQ_DA is not set
# CONFIG_BLK_CPQ_CISS_DA is not set
# CONFIG_BLK_DEV_DAC960 is not set
# CONFIG_BLK_DEV_UMEM is not set
# CONFIG_BLK_DEV_COW_COMMON is not set
CONFIG_BLK_DEV_LOOP=y
# CONFIG_BLK_DEV_CRYPTOLOOP is not set
# CONFIG_BLK_DEV_NBD is not set
# CONFIG_BLK_DEV_SX8 is not set
# CONFIG_BLK_DEV_UB is not set
# CONFIG_BLK_DEV_RAM is not set
CONFIG_BLK_DEV_RAM_COUNT=16
CONFIG_LBD=y
# CONFIG_CDROM_PKTCDVD is not set

#
# IO Schedulers
#
CONFIG_IOSCHED_NOOP=y
CONFIG_IOSCHED_AS=y
CONFIG_IOSCHED_DEADLINE=y
CONFIG_IOSCHED_CFQ=y
# CONFIG_ATA_OVER_ETH is not set

#
# ATA/ATAPI/MFM/RLL support
#
CONFIG_IDE=y
CONFIG_BLK_DEV_IDE=y

#
# Please see Documentation/ide.txt for help/info on IDE drives
#
# CONFIG_BLK_DEV_IDE_SATA is not set
# CONFIG_BLK_DEV_HD_IDE is not set
CONFIG_BLK_DEV_IDEDISK=y
CONFIG_IDEDISK_MULTI_MODE=y
CONFIG_BLK_DEV_IDECD=y
# CONFIG_BLK_DEV_IDETAPE is not set
# CONFIG_BLK_DEV_IDEFLOPPY is not set
# CONFIG_BLK_DEV_IDESCSI is not set
# CONFIG_IDE_TASK_IOCTL is not set

#
# IDE chipset support/bugfixes
#
CONFIG_IDE_GENERIC=y
# CONFIG_BLK_DEV_CMD640 is not set
# CONFIG_BLK_DEV_IDEPNP is not set
CONFIG_BLK_DEV_IDEPCI=y
# CONFIG_IDEPCI_SHARE_IRQ is not set
# CONFIG_BLK_DEV_OFFBOARD is not set
# CONFIG_BLK_DEV_GENERIC is not set
# CONFIG_BLK_DEV_OPTI621 is not set
# CONFIG_BLK_DEV_RZ1000 is not set
CONFIG_BLK_DEV_IDEDMA_PCI=y
# CONFIG_BLK_DEV_IDEDMA_FORCED is not set
CONFIG_IDEDMA_PCI_AUTO=y
# CONFIG_IDEDMA_ONLYDISK is not set
# CONFIG_BLK_DEV_AEC62XX is not set
# CONFIG_BLK_DEV_ALI15X3 is not set
CONFIG_BLK_DEV_AMD74XX=y
# CONFIG_BLK_DEV_ATIIXP is not set
# CONFIG_BLK_DEV_CMD64X is not set
# CONFIG_BLK_DEV_TRIFLEX is not set
# CONFIG_BLK_DEV_CY82C693 is not set
# CONFIG_BLK_DEV_CS5520 is not set
# CONFIG_BLK_DEV_CS5530 is not set
# CONFIG_BLK_DEV_HPT34X is not set
# CONFIG_BLK_DEV_HPT366 is not set
# CONFIG_BLK_DEV_SC1200 is not set
# CONFIG_BLK_DEV_PIIX is not set
# CONFIG_BLK_DEV_IT821X is not set
# CONFIG_BLK_DEV_NS87415 is not set
# CONFIG_BLK_DEV_PDC202XX_OLD is not set
# CONFIG_BLK_DEV_PDC202XX_NEW is not set
# CONFIG_BLK_DEV_SVWKS is not set
# CONFIG_BLK_DEV_SIIMAGE is not set
# CONFIG_BLK_DEV_SIS5513 is not set
# CONFIG_BLK_DEV_SLC90E66 is not set
# CONFIG_BLK_DEV_TRM290 is not set
# CONFIG_BLK_DEV_VIA82CXXX is not set
# CONFIG_IDE_ARM is not set
CONFIG_BLK_DEV_IDEDMA=y
# CONFIG_IDEDMA_IVB is not set
CONFIG_IDEDMA_AUTO=y
# CONFIG_BLK_DEV_HD is not set

#
# SCSI device support
#
# CONFIG_RAID_ATTRS is not set
CONFIG_SCSI=y
# CONFIG_SCSI_PROC_FS is not set

#
# SCSI support type (disk, tape, CD-ROM)
#
CONFIG_BLK_DEV_SD=y
# CONFIG_CHR_DEV_ST is not set
# CONFIG_CHR_DEV_OSST is not set
CONFIG_BLK_DEV_SR=y
# CONFIG_BLK_DEV_SR_VENDOR is not set
CONFIG_CHR_DEV_SG=y
# CONFIG_CHR_DEV_SCH is not set

#
# Some SCSI devices (e.g. CD jukebox) support multiple LUNs
#
# CONFIG_SCSI_MULTI_LUN is not set
# CONFIG_SCSI_CONSTANTS is not set
# CONFIG_SCSI_LOGGING is not set

#
# SCSI Transport Attributes
#
# CONFIG_SCSI_SPI_ATTRS is not set
# CONFIG_SCSI_FC_ATTRS is not set
# CONFIG_SCSI_ISCSI_ATTRS is not set
# CONFIG_SCSI_SAS_ATTRS is not set

#
# SCSI low-level drivers
#
# CONFIG_BLK_DEV_3W_XXXX_RAID is not set
# CONFIG_SCSI_3W_9XXX is not set
# CONFIG_SCSI_ACARD is not set
# CONFIG_SCSI_AACRAID is not set
# CONFIG_SCSI_AIC7XXX is not set
# CONFIG_SCSI_AIC7XXX_OLD is not set
# CONFIG_SCSI_AIC79XX is not set
# CONFIG_MEGARAID_NEWGEN is not set
# CONFIG_MEGARAID_LEGACY is not set
# CONFIG_MEGARAID_SAS is not set
CONFIG_SCSI_SATA=y
# CONFIG_SCSI_SATA_AHCI is not set
# CONFIG_SCSI_SATA_SVW is not set
# CONFIG_SCSI_ATA_PIIX is not set
# CONFIG_SCSI_SATA_MV is not set
CONFIG_SCSI_SATA_NV=y
# CONFIG_SCSI_SATA_PROMISE is not set
# CONFIG_SCSI_SATA_QSTOR is not set
# CONFIG_SCSI_SATA_SX4 is not set
# CONFIG_SCSI_SATA_SIL is not set
# CONFIG_SCSI_SATA_SIS is not set
# CONFIG_SCSI_SATA_ULI is not set
# CONFIG_SCSI_SATA_VIA is not set
# CONFIG_SCSI_SATA_VITESSE is not set
# CONFIG_SCSI_BUSLOGIC is not set
# CONFIG_SCSI_DMX3191D is not set
# CONFIG_SCSI_EATA is not set
# CONFIG_SCSI_FUTURE_DOMAIN is not set
# CONFIG_SCSI_GDTH is not set
# CONFIG_SCSI_IPS is not set
# CONFIG_SCSI_INITIO is not set
# CONFIG_SCSI_INIA100 is not set
# CONFIG_SCSI_PPA is not set
# CONFIG_SCSI_IMM is not set
# CONFIG_SCSI_SYM53C8XX_2 is not set
# CONFIG_SCSI_IPR is not set
# CONFIG_SCSI_QLOGIC_FC is not set
# CONFIG_SCSI_QLOGIC_1280 is not set
CONFIG_SCSI_QLA2XXX=y
# CONFIG_SCSI_QLA21XX is not set
# CONFIG_SCSI_QLA22XX is not set
# CONFIG_SCSI_QLA2300 is not set
# CONFIG_SCSI_QLA2322 is not set
# CONFIG_SCSI_QLA6312 is not set
# CONFIG_SCSI_QLA24XX is not set
# CONFIG_SCSI_LPFC is not set
# CONFIG_SCSI_DC395x is not set
# CONFIG_SCSI_DC390T is not set
# CONFIG_SCSI_DEBUG is not set

#
# Multi-device support (RAID and LVM)
#
# CONFIG_MD is not set

#
# Fusion MPT device support
#
# CONFIG_FUSION is not set
# CONFIG_FUSION_SPI is not set
# CONFIG_FUSION_FC is not set
# CONFIG_FUSION_SAS is not set

#
# IEEE 1394 (FireWire) support
#
# CONFIG_IEEE1394 is not set

#
# I2O device support
#
# CONFIG_I2O is not set

#
# Network device support
#
CONFIG_NETDEVICES=y
# CONFIG_DUMMY is not set
# CONFIG_BONDING is not set
# CONFIG_EQUALIZER is not set
# CONFIG_TUN is not set
# CONFIG_NET_SB1000 is not set

#
# ARCnet devices
#
# CONFIG_ARCNET is not set

#
# PHY device support
#
# CONFIG_PHYLIB is not set

#
# Ethernet (10 or 100Mbit)
#
CONFIG_NET_ETHERNET=y
CONFIG_MII=y
# CONFIG_HAPPYMEAL is not set
# CONFIG_SUNGEM is not set
# CONFIG_CASSINI is not set
# CONFIG_NET_VENDOR_3COM is not set

#
# Tulip family network device support
#
# CONFIG_NET_TULIP is not set
# CONFIG_HP100 is not set
CONFIG_NET_PCI=y
# CONFIG_PCNET32 is not set
# CONFIG_AMD8111_ETH is not set
# CONFIG_ADAPTEC_STARFIRE is not set
# CONFIG_B44 is not set
CONFIG_FORCEDETH=y
# CONFIG_DGRS is not set
# CONFIG_EEPRO100 is not set
# CONFIG_E100 is not set
# CONFIG_FEALNX is not set
# CONFIG_NATSEMI is not set
# CONFIG_NE2K_PCI is not set
# CONFIG_8139CP is not set
# CONFIG_8139TOO is not set
# CONFIG_SIS900 is not set
# CONFIG_EPIC100 is not set
# CONFIG_SUNDANCE is not set
# CONFIG_VIA_RHINE is not set
# CONFIG_NET_POCKET is not set

#
# Ethernet (1000 Mbit)
#
# CONFIG_ACENIC is not set
# CONFIG_DL2K is not set
# CONFIG_E1000 is not set
# CONFIG_NS83820 is not set
# CONFIG_HAMACHI is not set
# CONFIG_YELLOWFIN is not set
# CONFIG_R8169 is not set
# CONFIG_SIS190 is not set
# CONFIG_SKGE is not set
# CONFIG_SK98LIN is not set
# CONFIG_VIA_VELOCITY is not set
# CONFIG_TIGON3 is not set
# CONFIG_BNX2 is not set

#
# Ethernet (10000 Mbit)
#
# CONFIG_CHELSIO_T1 is not set
# CONFIG_IXGB is not set
# CONFIG_S2IO is not set

#
# Token Ring devices
#
# CONFIG_TR is not set

#
# Wireless LAN (non-hamradio)
#
# CONFIG_NET_RADIO is not set

#
# Wan interfaces
#
# CONFIG_WAN is not set
# CONFIG_FDDI is not set
# CONFIG_HIPPI is not set
# CONFIG_PLIP is not set
# CONFIG_PPP is not set
# CONFIG_SLIP is not set
# CONFIG_NET_FC is not set
# CONFIG_SHAPER is not set
# CONFIG_NETCONSOLE is not set
# CONFIG_NETPOLL is not set
# CONFIG_NET_POLL_CONTROLLER is not set

#
# ISDN subsystem
#
# CONFIG_ISDN is not set

#
# Telephony Support
#
# CONFIG_PHONE is not set

#
# Input device support
#
CONFIG_INPUT=y

#
# Userland interfaces
#
CONFIG_INPUT_MOUSEDEV=y
CONFIG_INPUT_MOUSEDEV_PSAUX=y
CONFIG_INPUT_MOUSEDEV_SCREEN_X=1024
CONFIG_INPUT_MOUSEDEV_SCREEN_Y=768
# CONFIG_INPUT_JOYDEV is not set
# CONFIG_INPUT_TSDEV is not set
CONFIG_INPUT_EVDEV=y
# CONFIG_INPUT_EVBUG is not set

#
# Input Device Drivers
#
CONFIG_INPUT_KEYBOARD=y
CONFIG_KEYBOARD_ATKBD=y
# CONFIG_KEYBOARD_SUNKBD is not set
# CONFIG_KEYBOARD_LKKBD is not set
# CONFIG_KEYBOARD_XTKBD is not set
# CONFIG_KEYBOARD_NEWTON is not set
CONFIG_INPUT_MOUSE=y
CONFIG_MOUSE_PS2=y
# CONFIG_MOUSE_SERIAL is not set
# CONFIG_MOUSE_VSXXXAA is not set
# CONFIG_INPUT_JOYSTICK is not set
# CONFIG_INPUT_TOUCHSCREEN is not set
# CONFIG_INPUT_MISC is not set

#
# Hardware I/O ports
#
CONFIG_SERIO=y
CONFIG_SERIO_I8042=y
# CONFIG_SERIO_SERPORT is not set
# CONFIG_SERIO_CT82C710 is not set
# CONFIG_SERIO_PARKBD is not set
# CONFIG_SERIO_PCIPS2 is not set
CONFIG_SERIO_LIBPS2=y
# CONFIG_SERIO_RAW is not set
# CONFIG_GAMEPORT is not set

#
# Character devices
#
CONFIG_VT=y
CONFIG_VT_CONSOLE=y
CONFIG_HW_CONSOLE=y
# CONFIG_SERIAL_NONSTANDARD is not set

#
# Serial drivers
#
CONFIG_SERIAL_8250=y
CONFIG_SERIAL_8250_CONSOLE=y
# CONFIG_SERIAL_8250_ACPI is not set
CONFIG_SERIAL_8250_NR_UARTS=4
# CONFIG_SERIAL_8250_EXTENDED is not set

#
# Non-8250 serial port support
#
CONFIG_SERIAL_CORE=y
CONFIG_SERIAL_CORE_CONSOLE=y
# CONFIG_SERIAL_JSM is not set
CONFIG_UNIX98_PTYS=y
CONFIG_LEGACY_PTYS=y
CONFIG_LEGACY_PTY_COUNT=256
# CONFIG_PRINTER is not set
# CONFIG_PPDEV is not set
# CONFIG_TIPAR is not set

#
# IPMI
#
# CONFIG_IPMI_HANDLER is not set

#
# Watchdog Cards
#
# CONFIG_WATCHDOG is not set
CONFIG_HW_RANDOM=y
# CONFIG_NVRAM is not set
CONFIG_RTC=y
# CONFIG_DTLK is not set
# CONFIG_R3964 is not set
# CONFIG_APPLICOM is not set

#
# Ftape, the floppy tape device driver
#
CONFIG_AGP=y
CONFIG_AGP_AMD64=y
# CONFIG_AGP_INTEL is not set
# CONFIG_DRM is not set
# CONFIG_MWAVE is not set
# CONFIG_RAW_DRIVER is not set
CONFIG_HPET=y
# CONFIG_HPET_RTC_IRQ is not set
CONFIG_HPET_MMAP=y
CONFIG_HANGCHECK_TIMER=y

#
# TPM devices
#
# CONFIG_TCG_TPM is not set

#
# I2C support
#
# CONFIG_I2C is not set

#
# Dallas's 1-wire bus
#
# CONFIG_W1 is not set

#
# Hardware Monitoring support
#
# CONFIG_HWMON is not set
# CONFIG_HWMON_VID is not set

#
# Misc devices
#
# CONFIG_IBM_ASM is not set

#
# Multimedia Capabilities Port drivers
#

#
# Multimedia devices
#
# CONFIG_VIDEO_DEV is not set

#
# Digital Video Broadcasting Devices
#
# CONFIG_DVB is not set

#
# Graphics support
#
# CONFIG_FB is not set
CONFIG_VIDEO_SELECT=y

#
# Console display driver support
#
CONFIG_VGA_CONSOLE=y
CONFIG_DUMMY_CONSOLE=y

#
# Sound
#
# CONFIG_SOUND is not set

#
# USB support
#
CONFIG_USB_ARCH_HAS_HCD=y
CONFIG_USB_ARCH_HAS_OHCI=y
CONFIG_USB=y
# CONFIG_USB_DEBUG is not set

#
# Miscellaneous USB options
#
CONFIG_USB_DEVICEFS=y
# CONFIG_USB_BANDWIDTH is not set
# CONFIG_USB_DYNAMIC_MINORS is not set
# CONFIG_USB_SUSPEND is not set
# CONFIG_USB_OTG is not set

#
# USB Host Controller Drivers
#
CONFIG_USB_EHCI_HCD=y
# CONFIG_USB_EHCI_SPLIT_ISO is not set
# CONFIG_USB_EHCI_ROOT_HUB_TT is not set
# CONFIG_USB_ISP116X_HCD is not set
CONFIG_USB_OHCI_HCD=y
# CONFIG_USB_OHCI_BIG_ENDIAN is not set
CONFIG_USB_OHCI_LITTLE_ENDIAN=y
# CONFIG_USB_UHCI_HCD is not set
# CONFIG_USB_SL811_HCD is not set

#
# USB Device Class drivers
#
# CONFIG_USB_BLUETOOTH_TTY is not set
# CONFIG_USB_ACM is not set
CONFIG_USB_PRINTER=y

#
# NOTE: USB_STORAGE enables SCSI, and 'SCSI disk support' may also be
needed; see USB_STORAGE Help for more information
#
CONFIG_USB_STORAGE=y
# CONFIG_USB_STORAGE_DEBUG is not set
# CONFIG_USB_STORAGE_DATAFAB is not set
# CONFIG_USB_STORAGE_FREECOM is not set
# CONFIG_USB_STORAGE_ISD200 is not set
# CONFIG_USB_STORAGE_DPCM is not set
# CONFIG_USB_STORAGE_USBAT is not set
# CONFIG_USB_STORAGE_SDDR09 is not set
# CONFIG_USB_STORAGE_SDDR55 is not set
# CONFIG_USB_STORAGE_JUMPSHOT is not set
# CONFIG_USB_STORAGE_ONETOUCH is not set

#
# USB Input Devices
#
CONFIG_USB_HID=y
CONFIG_USB_HIDINPUT=y
# CONFIG_HID_FF is not set
# CONFIG_USB_HIDDEV is not set
# CONFIG_USB_AIPTEK is not set
# CONFIG_USB_WACOM is not set
# CONFIG_USB_ACECAD is not set
# CONFIG_USB_KBTAB is not set
# CONFIG_USB_POWERMATE is not set
# CONFIG_USB_MTOUCH is not set
# CONFIG_USB_ITMTOUCH is not set
# CONFIG_USB_EGALAX is not set
# CONFIG_USB_YEALINK is not set
# CONFIG_USB_XPAD is not set
# CONFIG_USB_ATI_REMOTE is not set
# CONFIG_USB_KEYSPAN_REMOTE is not set
# CONFIG_USB_APPLETOUCH is not set

#
# USB Imaging devices
#
# CONFIG_USB_MDC800 is not set
# CONFIG_USB_MICROTEK is not set

#
# USB Multimedia devices
#
# CONFIG_USB_DABUSB is not set

#
# Video4Linux support is needed for USB Multimedia device support
#

#
# USB Network Adapters
#
# CONFIG_USB_CATC is not set
# CONFIG_USB_KAWETH is not set
# CONFIG_USB_PEGASUS is not set
# CONFIG_USB_RTL8150 is not set
# CONFIG_USB_USBNET is not set
CONFIG_USB_MON=y

#
# USB port drivers
#
# CONFIG_USB_USS720 is not set

#
# USB Serial Converter support
#
# CONFIG_USB_SERIAL is not set

#
# USB Miscellaneous drivers
#
# CONFIG_USB_EMI62 is not set
# CONFIG_USB_EMI26 is not set
# CONFIG_USB_AUERSWALD is not set
# CONFIG_USB_RIO500 is not set
# CONFIG_USB_LEGOTOWER is not set
# CONFIG_USB_LCD is not set
# CONFIG_USB_LED is not set
# CONFIG_USB_CYTHERM is not set
# CONFIG_USB_PHIDGETKIT is not set
# CONFIG_USB_PHIDGETSERVO is not set
# CONFIG_USB_IDMOUSE is not set
# CONFIG_USB_SISUSBVGA is not set
# CONFIG_USB_LD is not set
# CONFIG_USB_TEST is not set

#
# USB DSL modem support
#

#
# USB Gadget Support
#
# CONFIG_USB_GADGET is not set

#
# MMC/SD Card support
#
# CONFIG_MMC is not set

#
# InfiniBand support
#
# CONFIG_INFINIBAND is not set

#
# SN Devices
#

#
# Firmware Drivers
#
# CONFIG_EDD is not set
# CONFIG_DELL_RBU is not set
# CONFIG_DCDBAS is not set

#
# File systems
#
CONFIG_EXT2_FS=y
CONFIG_EXT2_FS_XATTR=y
CONFIG_EXT2_FS_POSIX_ACL=y
# CONFIG_EXT2_FS_SECURITY is not set
# CONFIG_EXT2_FS_XIP is not set
CONFIG_EXT3_FS=y
CONFIG_EXT3_FS_XATTR=y
CONFIG_EXT3_FS_POSIX_ACL=y
# CONFIG_EXT3_FS_SECURITY is not set
CONFIG_JBD=y
# CONFIG_JBD_DEBUG is not set
CONFIG_FS_MBCACHE=y
# CONFIG_REISERFS_FS is not set
# CONFIG_JFS_FS is not set
CONFIG_FS_POSIX_ACL=y
# CONFIG_XFS_FS is not set
# CONFIG_MINIX_FS is not set
# CONFIG_ROMFS_FS is not set
CONFIG_INOTIFY=y
# CONFIG_QUOTA is not set
CONFIG_DNOTIFY=y
CONFIG_AUTOFS_FS=y
# CONFIG_AUTOFS4_FS is not set
# CONFIG_FUSE_FS is not set

#
# CD-ROM/DVD Filesystems
#
CONFIG_ISO9660_FS=y
CONFIG_JOLIET=y
CONFIG_ZISOFS=y
CONFIG_ZISOFS_FS=y
CONFIG_UDF_FS=y
CONFIG_UDF_NLS=y

#
# DOS/FAT/NT Filesystems
#
CONFIG_FAT_FS=y
CONFIG_MSDOS_FS=y
CONFIG_VFAT_FS=y
CONFIG_FAT_DEFAULT_CODEPAGE=437
CONFIG_FAT_DEFAULT_IOCHARSET="iso8859-1"
# CONFIG_NTFS_FS is not set

#
# Pseudo filesystems
#
CONFIG_PROC_FS=y
CONFIG_PROC_KCORE=y
CONFIG_SYSFS=y
CONFIG_TMPFS=y
CONFIG_HUGETLBFS=y
CONFIG_HUGETLB_PAGE=y
CONFIG_RAMFS=y
# CONFIG_RELAYFS_FS is not set

#
# Miscellaneous filesystems
#
# CONFIG_ADFS_FS is not set
# CONFIG_AFFS_FS is not set
# CONFIG_HFS_FS is not set
# CONFIG_HFSPLUS_FS is not set
# CONFIG_BEFS_FS is not set
# CONFIG_BFS_FS is not set
# CONFIG_EFS_FS is not set
# CONFIG_CRAMFS is not set
# CONFIG_VXFS_FS is not set
# CONFIG_HPFS_FS is not set
# CONFIG_QNX4FS_FS is not set
# CONFIG_SYSV_FS is not set
# CONFIG_UFS_FS is not set

#
# Network File Systems
#
# CONFIG_NFS_FS is not set
# CONFIG_NFSD is not set
# CONFIG_SMB_FS is not set
# CONFIG_CIFS is not set
# CONFIG_NCP_FS is not set
# CONFIG_CODA_FS is not set
# CONFIG_AFS_FS is not set
# CONFIG_9P_FS is not set

#
# Partition Types
#
# CONFIG_PARTITION_ADVANCED is not set
CONFIG_MSDOS_PARTITION=y

#
# Native Language Support
#
CONFIG_NLS=y
CONFIG_NLS_DEFAULT="iso8859-1"
CONFIG_NLS_CODEPAGE_437=y
# CONFIG_NLS_CODEPAGE_737 is not set
# CONFIG_NLS_CODEPAGE_775 is not set
# CONFIG_NLS_CODEPAGE_850 is not set
# CONFIG_NLS_CODEPAGE_852 is not set
# CONFIG_NLS_CODEPAGE_855 is not set
# CONFIG_NLS_CODEPAGE_857 is not set
# CONFIG_NLS_CODEPAGE_860 is not set
# CONFIG_NLS_CODEPAGE_861 is not set
# CONFIG_NLS_CODEPAGE_862 is not set
# CONFIG_NLS_CODEPAGE_863 is not set
# CONFIG_NLS_CODEPAGE_864 is not set
# CONFIG_NLS_CODEPAGE_865 is not set
# CONFIG_NLS_CODEPAGE_866 is not set
# CONFIG_NLS_CODEPAGE_869 is not set
# CONFIG_NLS_CODEPAGE_936 is not set
# CONFIG_NLS_CODEPAGE_950 is not set
# CONFIG_NLS_CODEPAGE_932 is not set
# CONFIG_NLS_CODEPAGE_949 is not set
# CONFIG_NLS_CODEPAGE_874 is not set
# CONFIG_NLS_ISO8859_8 is not set
# CONFIG_NLS_CODEPAGE_1250 is not set
# CONFIG_NLS_CODEPAGE_1251 is not set
CONFIG_NLS_ASCII=y
CONFIG_NLS_ISO8859_1=y
# CONFIG_NLS_ISO8859_2 is not set
# CONFIG_NLS_ISO8859_3 is not set
# CONFIG_NLS_ISO8859_4 is not set
# CONFIG_NLS_ISO8859_5 is not set
# CONFIG_NLS_ISO8859_6 is not set
# CONFIG_NLS_ISO8859_7 is not set
# CONFIG_NLS_ISO8859_9 is not set
# CONFIG_NLS_ISO8859_13 is not set
# CONFIG_NLS_ISO8859_14 is not set
CONFIG_NLS_ISO8859_15=y
# CONFIG_NLS_KOI8_R is not set
# CONFIG_NLS_KOI8_U is not set
CONFIG_NLS_UTF8=y

#
# Profiling support
#
# CONFIG_PROFILING is not set

#
# Kernel hacking
#
# CONFIG_PRINTK_TIME is not set
CONFIG_DEBUG_KERNEL=y
CONFIG_MAGIC_SYSRQ=y
CONFIG_LOG_BUF_SHIFT=18
CONFIG_DETECT_SOFTLOCKUP=y
# CONFIG_SCHEDSTATS is not set
# CONFIG_DEBUG_SLAB is not set
# CONFIG_DEBUG_SPINLOCK is not set
# CONFIG_DEBUG_SPINLOCK_SLEEP is not set
# CONFIG_DEBUG_KOBJECT is not set
# CONFIG_DEBUG_INFO is not set
# CONFIG_DEBUG_FS is not set
# CONFIG_FRAME_POINTER is not set
CONFIG_INIT_DEBUG=y
# CONFIG_IOMMU_DEBUG is not set
CONFIG_KPROBES=y

#
# Security options
#
# CONFIG_KEYS is not set
# CONFIG_SECURITY is not set

#
# Cryptographic options
#
CONFIG_CRYPTO=y
CONFIG_CRYPTO_HMAC=y
CONFIG_CRYPTO_NULL=y
CONFIG_CRYPTO_MD4=y
CONFIG_CRYPTO_MD5=y
CONFIG_CRYPTO_SHA1=y
CONFIG_CRYPTO_SHA256=y
CONFIG_CRYPTO_SHA512=y
CONFIG_CRYPTO_WP512=y
CONFIG_CRYPTO_TGR192=y
CONFIG_CRYPTO_DES=y
CONFIG_CRYPTO_BLOWFISH=y
CONFIG_CRYPTO_TWOFISH=y
CONFIG_CRYPTO_SERPENT=y
# CONFIG_CRYPTO_AES_X86_64 is not set
CONFIG_CRYPTO_CAST5=y
CONFIG_CRYPTO_CAST6=y
CONFIG_CRYPTO_TEA=y
CONFIG_CRYPTO_ARC4=y
CONFIG_CRYPTO_KHAZAD=y
CONFIG_CRYPTO_ANUBIS=y
CONFIG_CRYPTO_DEFLATE=y
CONFIG_CRYPTO_MICHAEL_MIC=y
CONFIG_CRYPTO_CRC32C=y
# CONFIG_CRYPTO_TEST is not set

#
# Hardware crypto devices
#

#
# Library routines
#
CONFIG_CRC_CCITT=y
# CONFIG_CRC16 is not set
CONFIG_CRC32=y
CONFIG_LIBCRC32C=y
CONFIG_ZLIB_INFLATE=y
CONFIG_ZLIB_DEFLATE=y


^ permalink raw reply	[flat|nested] 8+ messages in thread

* Re: Bug: timer going backward on a dual core
  2005-10-28 19:09 Bug: timer going backward on a dual core Claudio Scordino
@ 2005-10-28 19:30 ` john stultz
  2005-10-28 20:27   ` Claudio Scordino
  0 siblings, 1 reply; 8+ messages in thread
From: john stultz @ 2005-10-28 19:30 UTC (permalink / raw)
  To: Claudio Scordino; +Cc: linux-kernel, kernelnewbies

On Fri, 2005-10-28 at 15:09 -0400, Claudio Scordino wrote:
> Hi all.
> 
> We have a dual-core AMD64 with the new kernel 2.6.14 and the 
> timer goes backward...
> 
> 
> CONFIGURATION:
> 
> Kernel: 2.6.14
> Distribution: Gentoo Linux 2005.0
> Processor: Athlon 64 x2 4200+ (dual core)
> Motherboard: Abit KN8
> Memory: 1GB PC3200
> 
> 
> PROBLEM:
> 
> gettimeofday goes backward and returns values that are not monotonic,
> giving values that are smaller than values returned before.
> 
> The system has been tested with timer as PIT, PIT/TSC and PM and the
> problem occurs with all the configurations. 
> 
> Here is the config file that we used for the PM configuration.
> 
> Any suggestion ?

Booting w/ idle=poll tends to work around this issue. You might check
with your motherboard vendor for an updated BIOS that supports HPET or
the ACPI PM timer.

thanks
-john


^ permalink raw reply	[flat|nested] 8+ messages in thread

* Bug: timer going backward on a dual core
  2005-10-28 19:30 ` john stultz
@ 2005-10-28 20:27   ` Claudio Scordino
  2005-10-28 20:43     ` john stultz
  0 siblings, 1 reply; 8+ messages in thread
From: Claudio Scordino @ 2005-10-28 20:27 UTC (permalink / raw)
  To: john stultz; +Cc: kernelnewbies, linux-kernel

> > We have a dual-core AMD64 with the new kernel 2.6.14 and the
> > timer goes backward...
> >
> >
> > CONFIGURATION:
> >
> > Kernel: 2.6.14
> > Distribution: Gentoo Linux 2005.0
> > Processor: Athlon 64 x2 4200+ (dual core)
> > Motherboard: Abit KN8
> > Memory: 1GB PC3200
> >
> >
> > PROBLEM:
> >
> > gettimeofday goes backward and returns values that are not monotonic,
> > giving values that are smaller than values returned before.
> >
> > The system has been tested with timer as PIT, PIT/TSC and PM and the
> > problem occurs with all the configurations.
> >
> > Here is the config file that we used for the PM configuration.
> >
> > Any suggestion ?
>
> Booting w/ idle=poll tends to work around this issue. You might check
> with your motherboard vendor for an updated BIOS that supports HPET or
> the ACPI PM timer.

We already updated the BIOS with the latest version.

Also the booting command idle=poll doesn't work.

Here is the output of dmesg, if it may be useful.

Thanks,

              Claudio

Bootdata ok (command line is root=/dev/sda3 idle=poll)
Linux version 2.6.14 (root@yellow-athlon) (gcc version 3.4.4 (Gentoo 3.4.4-r1, 
ssp-3.4.4-1.0, pie-8.7.8)) #2 SMP Fri Oct 28 15:22:35 EDT 2005
BIOS-provided physical RAM map:
 BIOS-e820: 0000000000000000 - 000000000009f000 (usable)
 BIOS-e820: 000000000009f000 - 00000000000a0000 (reserved)
 BIOS-e820: 00000000000f0000 - 0000000000100000 (reserved)
 BIOS-e820: 0000000000100000 - 000000003fee0000 (usable)
 BIOS-e820: 000000003fee0000 - 000000003fee3000 (ACPI NVS)
 BIOS-e820: 000000003fee3000 - 000000003fef0000 (ACPI data)
 BIOS-e820: 000000003fef0000 - 000000003ff00000 (reserved)
 BIOS-e820: 00000000e0000000 - 00000000f0000000 (reserved)
 BIOS-e820: 00000000fec00000 - 0000000100000000 (reserved)
ACPI: RSDP (v000 Nvidia                                ) @ 0x00000000000f7800
ACPI: RSDT (v001 Nvidia AWRDACPI 0x42302e31 AWRD 0x00000000) @ 
0x000000003fee3040
ACPI: FADT (v001 Nvidia AWRDACPI 0x42302e31 AWRD 0x00000000) @ 
0x000000003fee30c0
ACPI: SSDT (v001 PTLTD  POWERNOW 0x00000001  LTP 0x00000001) @ 
0x000000003fee9a40
ACPI: MCFG (v001 Nvidia AWRDACPI 0x42302e31 AWRD 0x00000000) @ 
0x000000003fee9c80
ACPI: MADT (v001 Nvidia AWRDACPI 0x42302e31 AWRD 0x00000000) @ 
0x000000003fee9980
ACPI: DSDT (v001 NVIDIA AWRDACPI 0x00001000 MSFT 0x0100000e) @ 
0x0000000000000000
Scanning NUMA topology in Northbridge 24
Number of nodes 1
Node 0 MemBase 0000000000000000 Limit 000000003fee0000
Using 20 for the hash shift. Max adder is 3fee0000 
Using node hash shift of 20
Bootmem setup node 0 0000000000000000-000000003fee0000
On node 0 totalpages: 261759
  DMA zone: 3999 pages, LIFO batch:1
  Normal zone: 257760 pages, LIFO batch:31
  HighMem zone: 0 pages, LIFO batch:1
Nvidia board detected. Ignoring ACPI timer override.
ACPI: Local APIC address 0xfee00000
ACPI: LAPIC (acpi_id[0x00] lapic_id[0x00] enabled)
Processor #0 15:11 APIC version 16
ACPI: LAPIC (acpi_id[0x01] lapic_id[0x01] enabled)
Processor #1 15:11 APIC version 16
ACPI: LAPIC_NMI (acpi_id[0x00] high edge lint[0x1])
ACPI: LAPIC_NMI (acpi_id[0x01] high edge lint[0x1])
ACPI: IOAPIC (id[0x02] address[0xfec00000] gsi_base[0])
IOAPIC[0]: apic_id 2, version 17, address 0xfec00000, GSI 0-23
ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl)
ACPI: BIOS IRQ0 pin2 override ignored.
ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level)
ACPI: INT_SRC_OVR (bus 0 bus_irq 14 global_irq 14 high edge)
ACPI: INT_SRC_OVR (bus 0 bus_irq 15 global_irq 15 high edge)
ACPI: IRQ9 used by override.
ACPI: IRQ14 used by override.
ACPI: IRQ15 used by override.
Setting APIC routing to flat
Using ACPI (MADT) for SMP configuration information
Allocating PCI resources starting at 40000000 (gap: 3ff00000:a0100000)
Built 1 zonelists
Kernel command line: root=/dev/sda3 idle=poll
using polling idle threads.
Initializing CPU#0
PID hash table entries: 4096 (order: 12, 131072 bytes)
time.c: Using 1.193182 MHz PIT timer.
time.c: Detected 2210.222 MHz processor.
Console: colour VGA+ 80x25
Dentry cache hash table entries: 131072 (order: 8, 1048576 bytes)
Inode-cache hash table entries: 65536 (order: 7, 524288 bytes)
Memory: 1026156k/1047424k available (2785k kernel code, 20880k reserved, 1231k 
data, 216k init)
Calibrating delay using timer specific routine.. 4424.98 BogoMIPS 
(lpj=8849962)
Mount-cache hash table entries: 256
CPU: L1 I Cache: 64K (64 bytes/line), D cache 64K (64 bytes/line)
CPU: L2 Cache: 512K (64 bytes/line)
CPU 0(2) -> Node 0 -> Core 0
mtrr: v2.0 (20020519)
 tbxface-0109 [02] load_tables           : ACPI Tables successfully acquired
Parsing all Control 
Methods:...................................................................................................................................................................................................................................................................................................
Table [DSDT](id 0006) - 1027 Objects with 90 Devices 291 Methods 40 Regions
Parsing all Control Methods:
Table [SSDT](id 0004) - 6 Objects with 0 Devices 0 Methods 0 Regions
ACPI Namespace successfully loaded at root ffffffff8054e080
evxfevnt-0091 [03] enable                : Transition to ACPI mode successful
Using local APIC timer interrupts.
Detected 12.558 MHz APIC timer.
softlockup thread 0 started up.
Booting processor 1/2 APIC 0x1
Initializing CPU#1
Calibrating delay using timer specific routine.. 4420.68 BogoMIPS 
(lpj=8841360)
CPU: L1 I Cache: 64K (64 bytes/line), D cache 64K (64 bytes/line)
CPU: L2 Cache: 512K (64 bytes/line)
CPU 1(2) -> Node 0 -> Core 1
AMD Athlon(tm) 64 X2 Dual Core Processor 4200+ stepping 01
CPU 1: Syncing TSC to CPU 0.
CPU 1: synchronized TSC with CPU 0 (last diff -77 cycles, maxerr 548 cycles)
Brought up 2 CPUs
softlockup thread 1 started up.
time.c: Using PIT/TSC based timekeeping.
testing NMI watchdog ... OK.
NET: Registered protocol family 16
ACPI: bus type pci registered
PCI: Using configuration type 1
PCI: Using MMCONFIG at e0000000
ACPI: Subsystem revision 20050902
evgpeblk-0988 [06] ev_create_gpe_block   : GPE 00 to 1F [_GPE] 4 regs on int 
0x9
evgpeblk-0996 [06] ev_create_gpe_block   : Found 7 Wake, Enabled 1 Runtime 
GPEs in this block
evgpeblk-0988 [06] ev_create_gpe_block   : GPE 20 to 5F [_GPE] 8 regs on int 
0x9
evgpeblk-0996 [06] ev_create_gpe_block   : Found 0 Wake, Enabled 0 Runtime 
GPEs in this block
Completing Region/Field/Buffer/Package 
initialization:...................................................................................................
Initialized 40/40 Regions 9/9 Fields 34/34 Buffers 16/25 Packages (1042 nodes)
Executing all Device _STA and_INI 
methods:...............................................................................................
95 Devices found containing: 95 _STA, 2 _INI methods
ACPI: Interpreter enabled
ACPI: Using IOAPIC for interrupt routing
ACPI: PCI Root Bridge [PCI0] (0000:00)
PCI: Probing PCI hardware (bus 00)
PCI: Transparent bridge - 0000:00:09.0
Boot video device is 0000:01:00.0
ACPI: PCI Interrupt Routing Table [\_SB_.PCI0._PRT]
ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.HUB0._PRT]
ACPI: PCI Interrupt Link [LNK1] (IRQs 3 4 5 7 10 11) *0, disabled.
ACPI: PCI Interrupt Link [LNK2] (IRQs 3 4 5 7 10 11) *0, disabled.
ACPI: PCI Interrupt Link [LNK3] (IRQs 3 4 *5 7 10 11)
ACPI: PCI Interrupt Link [LNK4] (IRQs 3 4 5 7 10 11) *0, disabled.
ACPI: PCI Interrupt Link [LNK5] (IRQs 3 4 5 7 10 11) *0, disabled.
ACPI: PCI Interrupt Link [LUBA] (IRQs 3 *4 5 7 10 11)
ACPI: PCI Interrupt Link [LUBB] (IRQs 3 4 5 7 10 11) *0, disabled.
ACPI: PCI Interrupt Link [LMAC] (IRQs 3 4 5 *7 10 11)
ACPI: PCI Interrupt Link [LACI] (IRQs 3 4 5 7 10 11) *0, disabled.
ACPI: PCI Interrupt Link [LMCI] (IRQs *3 4 5 7 10 11)
ACPI: PCI Interrupt Link [LSMB] (IRQs 3 4 5 7 *10 11)
ACPI: PCI Interrupt Link [LUB2] (IRQs 3 4 5 7 10 *11)
ACPI: PCI Interrupt Link [LIDE] (IRQs 3 4 5 7 10 11) *0, disabled.
ACPI: PCI Interrupt Link [LSID] (IRQs 3 4 5 7 10 *11)
ACPI: PCI Interrupt Link [LFID] (IRQs 3 4 5 7 *10 11)
ACPI: PCI Interrupt Link [LPCA] (IRQs 3 4 5 7 10 11) *0, disabled.
ACPI: PCI Interrupt Link [APC1] (IRQs 16) *0, disabled.
ACPI: PCI Interrupt Link [APC2] (IRQs 17) *0, disabled.
ACPI: PCI Interrupt Link [APC3] (IRQs 18) *0, disabled.
ACPI: PCI Interrupt Link [APC4] (IRQs 19) *0, disabled.
ACPI: PCI Interrupt Link [APC5] (IRQs *16), disabled.
ACPI: PCI Interrupt Link [APCF] (IRQs 20 21 22 23) *0, disabled.
ACPI: PCI Interrupt Link [APCG] (IRQs 20 21 22 23) *0, disabled.
ACPI: PCI Interrupt Link [APCH] (IRQs 20 21 22 23) *0, disabled.
ACPI: PCI Interrupt Link [APCJ] (IRQs 20 21 22 23) *0, disabled.
ACPI: PCI Interrupt Link [APCK] (IRQs 20 21 22 23) *0, disabled.
ACPI: PCI Interrupt Link [APCS] (IRQs 20 21 22 23) *0, disabled.
ACPI: PCI Interrupt Link [APCL] (IRQs 20 21 22 23) *0, disabled.
ACPI: PCI Interrupt Link [APCZ] (IRQs 20 21 22 23) *0, disabled.
ACPI: PCI Interrupt Link [APSI] (IRQs 20 21 22 23) *0, disabled.
ACPI: PCI Interrupt Link [APSJ] (IRQs 20 21 22 23) *0, disabled.
ACPI: PCI Interrupt Link [APCP] (IRQs 20 21 22 23) *0, disabled.
ACPI: Power Resource [PFAN] (off)
Linux Plug and Play Support v0.97 (c) Adam Belay
pnp: PnP ACPI init
pnp: PnP ACPI: found 9 devices
SCSI subsystem initialized
usbcore: registered new driver usbfs
usbcore: registered new driver hub
PCI: Using ACPI for IRQ routing
PCI: If a device doesn't work, try "pci=routeirq".  If it helps, post a report
pnp: 00:00: ioport range 0x1000-0x107f could not be reserved
pnp: 00:00: ioport range 0x1080-0x10ff has been reserved
pnp: 00:00: ioport range 0x1400-0x147f has been reserved
pnp: 00:00: ioport range 0x1480-0x14ff could not be reserved
pnp: 00:00: ioport range 0x1800-0x187f has been reserved
pnp: 00:00: ioport range 0x1880-0x18ff has been reserved
PCI: Bridge: 0000:00:09.0
  IO window: 7000-7fff
  MEM window: fde00000-fdefffff
  PREFETCH window: fdd00000-fddfffff
PCI: Bridge: 0000:00:0b.0
  IO window: 9000-9fff
  MEM window: fd900000-fd9fffff
  PREFETCH window: fd800000-fd8fffff
PCI: Bridge: 0000:00:0c.0
  IO window: a000-afff
  MEM window: fdb00000-fdbfffff
  PREFETCH window: fda00000-fdafffff
PCI: Bridge: 0000:00:0d.0
  IO window: 6000-6fff
  MEM window: fdf00000-fdffffff
  PREFETCH window: fdc00000-fdcfffff
PCI: Bridge: 0000:00:0e.0
  IO window: 8000-8fff
  MEM window: fa000000-fcffffff
  PREFETCH window: d0000000-dfffffff
PCI: Setting latency timer of device 0000:00:09.0 to 64
acpi_bus-0200 [01] bus_set_power         : Device is not power manageable
PCI: Setting latency timer of device 0000:00:0b.0 to 64
acpi_bus-0200 [01] bus_set_power         : Device is not power manageable
PCI: Setting latency timer of device 0000:00:0c.0 to 64
acpi_bus-0200 [01] bus_set_power         : Device is not power manageable
PCI: Setting latency timer of device 0000:00:0d.0 to 64
acpi_bus-0200 [01] bus_set_power         : Device is not power manageable
PCI: Setting latency timer of device 0000:00:0e.0 to 64
IA32 emulation $Id: sys_ia32.c,v 1.32 2002/03/24 13:02:28 ak Exp $
Total HugeTLB memory allocated, 0
Initializing Cryptographic API
pci_hotplug: PCI Hot Plug PCI Core version: 0.5
pciehp: Address64 -------- Resource unparsed
pciehp: Address64 -------- Resource unparsed
pciehp: Address64 -------- Resource unparsed
Evaluate _OSC Set fails. Status = 0x0005
pciehp: add_host_bridge: status 5
pciehp: Fails to gain control of native hot-plug
PCI: Setting latency timer of device 0000:00:0b.0 to 64
pcie_portdrv_probe->Dev[005d:10de] has invalid IRQ. Check vendor BIOS
assign_interrupt_mode Found MSI capability
Allocate Port Service[pcie00]
Allocate Port Service[pcie03]
PCI: Setting latency timer of device 0000:00:0c.0 to 64
pcie_portdrv_probe->Dev[005d:10de] has invalid IRQ. Check vendor BIOS
assign_interrupt_mode Found MSI capability
Allocate Port Service[pcie00]
Allocate Port Service[pcie03]
PCI: Setting latency timer of device 0000:00:0d.0 to 64
pcie_portdrv_probe->Dev[005d:10de] has invalid IRQ. Check vendor BIOS
assign_interrupt_mode Found MSI capability
Allocate Port Service[pcie00]
Allocate Port Service[pcie03]
PCI: Setting latency timer of device 0000:00:0e.0 to 64
pcie_portdrv_probe->Dev[005d:10de] has invalid IRQ. Check vendor BIOS
assign_interrupt_mode Found MSI capability
Allocate Port Service[pcie00]
Allocate Port Service[pcie03]
ACPI: Power Button (FF) [PWRF]
ACPI: Power Button (CM) [PWRB]
ACPI: Fan [FAN] (off)
Using specific hotkey driver
acpi_thermal-0386 [08] thermal_get_trip_point: Invalid passive threshold
ACPI: Thermal Zone [THRM] (27 C)
Real Time Clock Driver v1.12
Hangcheck: starting hangcheck timer 0.9.0 (tick is 180 seconds, margin is 60 
seconds).
Hangcheck: Using monotonic_clock().
PNP: PS/2 Controller [PNP0303:PS2K] at 0x60,0x64 irq 1
PNP: PS/2 controller doesn't have AUX irq; using default 12
serio: i8042 KBD port at 0x60,0x64 irq 1
Serial: 8250/16550 driver $Revision: 1.90 $ 4 ports, IRQ sharing disabled
io scheduler noop registered
io scheduler anticipatory registered
io scheduler deadline registered
io scheduler cfq registered
loop: loaded (max 8 devices)
forcedeth.c: Reverse Engineered nForce ethernet driver. Version 0.41.
acpi_bus-0200 [02] bus_set_power         : Device is not power manageable
ACPI: PCI Interrupt Link [APCH] enabled at IRQ 23
ACPI: PCI Interrupt 0000:00:0a.0[A] -> Link [APCH] -> GSI 23 (level, low) -> 
IRQ 217
PCI: Setting latency timer of device 0000:00:0a.0 to 64
eth0: forcedeth.c: subsystem: 0147b:1c05 bound to 0000:00:0a.0
Uniform Multi-Platform E-IDE driver Revision: 7.00alpha2
ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
NFORCE-CK804: IDE controller at PCI slot 0000:00:06.0
acpi_bus-0200 [02] bus_set_power         : Device is not power manageable
NFORCE-CK804: chipset revision 242
NFORCE-CK804: not 100% native mode: will probe irqs later
NFORCE-CK804: 0000:00:06.0 (rev f2) UDMA133 controller
    ide0: BM-DMA at 0xd000-0xd007, BIOS settings: hda:DMA, hdb:DMA
    ide1: BM-DMA at 0xd008-0xd00f, BIOS settings: hdc:DMA, hdd:DMA
Probing IDE interface ide0...
hdb: HL-DT-STDVD-ROM GDR8163B, ATAPI CD/DVD-ROM drive
ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
Probing IDE interface ide1...
Probing IDE interface ide1...
hdb: ATAPI 52X DVD-ROM drive, 256kB Cache, UDMA(33)
Uniform CD-ROM driver Revision: 3.20
libata version 1.12 loaded.
sata_nv version 0.8
acpi_bus-0200 [02] bus_set_power         : Device is not power manageable
ACPI: PCI Interrupt Link [APSI] enabled at IRQ 22
ACPI: PCI Interrupt 0000:00:07.0[A] -> Link [APSI] -> GSI 22 (level, low) -> 
IRQ 225
PCI: Setting latency timer of device 0000:00:07.0 to 64
ata1: SATA max UDMA/133 cmd 0x9F0 ctl 0xBF2 bmdma 0xD400 irq 225
ata2: SATA max UDMA/133 cmd 0x970 ctl 0xB72 bmdma 0xD408 irq 225
ata1: dev 0 cfg 49:2f00 82:746b 83:7f01 84:4023 85:7469 86:3e01 87:4023 
88:407f
ata1: dev 0 ATA, max UDMA/133, 156250000 sectors: lba48
nv_sata: Primary device added
nv_sata: Primary device removed
nv_sata: Secondary device added
nv_sata: Secondary device removed
ata1: dev 0 configured for UDMA/133
scsi0 : sata_nv
ata2: no device found (phy stat 00000000)
scsi1 : sata_nv
  Vendor: ATA       Model: WDC WD800JD-75LS  Rev: 09.0
  Type:   Direct-Access                      ANSI SCSI revision: 05
acpi_bus-0200 [02] bus_set_power         : Device is not power manageable
ACPI: PCI Interrupt Link [APSJ] enabled at IRQ 21
ACPI: PCI Interrupt 0000:00:08.0[A] -> Link [APSJ] -> GSI 21 (level, low) -> 
IRQ 233
PCI: Setting latency timer of device 0000:00:08.0 to 64
ata3: SATA max UDMA/133 cmd 0x9E0 ctl 0xBE2 bmdma 0xE800 irq 233
ata4: SATA max UDMA/133 cmd 0x960 ctl 0xB62 bmdma 0xE808 irq 233
ata3: no device found (phy stat 00000000)
scsi2 : sata_nv
ata4: no device found (phy stat 00000000)
scsi3 : sata_nv
SCSI device sda: 156250000 512-byte hdwr sectors (80000 MB)
SCSI device sda: drive cache: write back
SCSI device sda: 156250000 512-byte hdwr sectors (80000 MB)
SCSI device sda: drive cache: write back
 sda: sda1 sda2 sda3
Attached scsi disk sda at scsi0, channel 0, id 0, lun 0
Attached scsi generic sg0 at scsi0, channel 0, id 0, lun 0,  type 0
usbmon: debugfs is not available
acpi_bus-0200 [02] bus_set_power         : Device is not power manageable
ACPI: PCI Interrupt Link [APCL] enabled at IRQ 20
ACPI: PCI Interrupt 0000:00:02.1[B] -> Link [APCL] -> GSI 20 (level, low) -> 
IRQ 50
PCI: Setting latency timer of device 0000:00:02.1 to 64
ehci_hcd 0000:00:02.1: EHCI Host Controller
ehci_hcd 0000:00:02.1: debug port 1
ehci_hcd 0000:00:02.1: new USB bus registered, assigned bus number 1
ehci_hcd 0000:00:02.1: irq 50, io mem 0xfeb00000
PCI: cache line size of 64 is not supported by device 0000:00:02.1
ehci_hcd 0000:00:02.1: park 0
ehci_hcd 0000:00:02.1: USB 2.0 initialized, EHCI 1.00, driver 10 Dec 2004
hub 1-0:1.0: USB hub found
hub 1-0:1.0: 10 ports detected
ohci_hcd: 2005 April 22 USB 1.1 'Open' Host Controller (OHCI) Driver (PCI)
acpi_bus-0200 [02] bus_set_power         : Device is not power manageable
ACPI: PCI Interrupt Link [APCF] enabled at IRQ 23
ACPI: PCI Interrupt 0000:00:02.0[A] -> Link [APCF] -> GSI 23 (level, low) -> 
IRQ 217
PCI: Setting latency timer of device 0000:00:02.0 to 64
ohci_hcd 0000:00:02.0: OHCI Host Controller
ohci_hcd 0000:00:02.0: new USB bus registered, assigned bus number 2
ohci_hcd 0000:00:02.0: irq 217, io mem 0xfe02b000
hub 2-0:1.0: USB hub found
hub 2-0:1.0: 10 ports detected
usbcore: registered new driver usblp
drivers/usb/class/usblp.c: v0.13: USB Printer Device Class driver
Initializing USB Mass Storage driver...
usbcore: registered new driver usb-storage
USB Mass Storage support registered.
usbcore: registered new driver usbhid
drivers/usb/input/hid-core.c: v2.6:USB HID core driver
mice: PS/2 mouse device common for all mice
NET: Registered protocol family 2
input: AT Translated Set 2 keyboard on isa0060/serio0
IP route cache hash table entries: 32768 (order: 6, 262144 bytes)
TCP established hash table entries: 131072 (order: 9, 2097152 bytes)
TCP bind hash table entries: 65536 (order: 8, 1048576 bytes)
TCP: Hash tables configured (established 131072 bind 65536)
TCP reno registered
TCP bic registered
NET: Registered protocol family 1
NET: Registered protocol family 10
IPv6 over IPv4 tunneling driver
NET: Registered protocol family 17
powernow-k8: Found 2 AMD Athlon 64 / Opteron processors (version 1.50.4)
powernow-k8:    0 : fid 0xe (2200 MHz), vid 0x8 (1350 mV)
powernow-k8:    1 : fid 0xc (2000 MHz), vid 0xa (1300 mV)
powernow-k8:    2 : fid 0xa (1800 MHz), vid 0xc (1250 mV)
powernow-k8:    3 : fid 0x2 (1000 MHz), vid 0x12 (1100 mV)
cpu_init done, current fid 0xe, vid 0x8
kjournald starting.  Commit interval 5 seconds
EXT3-fs: mounted filesystem with ordered data mode.
VFS: Mounted root (ext3 filesystem) readonly.
Freeing unused kernel memory: 216k freed
Adding 2008116k swap on /dev/sda2.  Priority:-1 extents:1 across:2008116k
EXT3 FS on sda3, internal journal
eth0: no IPv6 routers present

^ permalink raw reply	[flat|nested] 8+ messages in thread

* Re: Bug: timer going backward on a dual core
  2005-10-28 20:27   ` Claudio Scordino
@ 2005-10-28 20:43     ` john stultz
  2005-10-28 21:39       ` Claudio Scordino
  0 siblings, 1 reply; 8+ messages in thread
From: john stultz @ 2005-10-28 20:43 UTC (permalink / raw)
  To: Claudio Scordino; +Cc: kernelnewbies, linux-kernel

On Fri, 2005-10-28 at 22:27 +0200, Claudio Scordino wrote:
> > > We have a dual-core AMD64 with the new kernel 2.6.14 and the
> > > timer goes backward...
> > >
> > >
> > > CONFIGURATION:
> > >
> > > Kernel: 2.6.14
> > > Distribution: Gentoo Linux 2005.0
> > > Processor: Athlon 64 x2 4200+ (dual core)
> > > Motherboard: Abit KN8
> > > Memory: 1GB PC3200
> > >
> > >
> > > PROBLEM:
> > >
> > > gettimeofday goes backward and returns values that are not monotonic,
> > > giving values that are smaller than values returned before.
> > >
> > > The system has been tested with timer as PIT, PIT/TSC and PM and the
> > > problem occurs with all the configurations.
> > >
> > > Here is the config file that we used for the PM configuration.
> > >
> > > Any suggestion ?
> >
> > Booting w/ idle=poll tends to work around this issue. You might check
> > with your motherboard vendor for an updated BIOS that supports HPET or
> > the ACPI PM timer.
> 
> We already updated the BIOS with the latest version.
> 
> Also the booting command idle=poll doesn't work.


Hmm. Not sure then. Is this a new regression on the same hardware?

Also, how are you measuring time going backwards?

Would you mind filing a bug (http://bugzilla.kernel.org )on this and
attaching your config and dmesg there? 


thanks
-john


^ permalink raw reply	[flat|nested] 8+ messages in thread

* Re: Bug: timer going backward on a dual core
  2005-10-28 20:43     ` john stultz
@ 2005-10-28 21:39       ` Claudio Scordino
  2005-10-28 21:44         ` john stultz
  2005-10-28 21:50         ` Vladimir Lazarenko
  0 siblings, 2 replies; 8+ messages in thread
From: Claudio Scordino @ 2005-10-28 21:39 UTC (permalink / raw)
  To: john stultz; +Cc: kernelnewbies, linux-kernel

On Friday 28 October 2005 22:43, john stultz wrote:
> On Fri, 2005-10-28 at 22:27 +0200, Claudio Scordino wrote:
> > > > We have a dual-core AMD64 with the new kernel 2.6.14 and the
> > > > timer goes backward...
> > > >
> > > >
> > > > CONFIGURATION:
> > > >
> > > > Kernel: 2.6.14
> > > > Distribution: Gentoo Linux 2005.0
> > > > Processor: Athlon 64 x2 4200+ (dual core)
> > > > Motherboard: Abit KN8
> > > > Memory: 1GB PC3200
> > > >
> > > >
> > > > PROBLEM:
> > > >
> > > > gettimeofday goes backward and returns values that are not monotonic,
> > > > giving values that are smaller than values returned before.
> > > >
> > > > The system has been tested with timer as PIT, PIT/TSC and PM and the
> > > > problem occurs with all the configurations.
> > > >
> > > > Here is the config file that we used for the PM configuration.
> > > >
> > > > Any suggestion ?
> > >
> > > Booting w/ idle=poll tends to work around this issue. You might check
> > > with your motherboard vendor for an updated BIOS that supports HPET or
> > > the ACPI PM timer.
> >
> > We already updated the BIOS with the latest version.
> >
> > Also the booting command idle=poll doesn't work.
>
> Hmm. Not sure then. Is this a new regression on the same hardware?

Yes, we tried with idle=poll and the problem occurred again.

>
> Also, how are you measuring time going backwards?

With a simple C program that calls gettimeofday and sees if the new value is 
less than the old one.

>
> Would you mind filing a bug (http://bugzilla.kernel.org )on this and
> attaching your config and dmesg there?

Sure.

Thanks,

          Claudio

^ permalink raw reply	[flat|nested] 8+ messages in thread

* Re: Bug: timer going backward on a dual core
  2005-10-28 21:39       ` Claudio Scordino
@ 2005-10-28 21:44         ` john stultz
  2005-10-30 22:13           ` Claudio Scordino
  2005-10-28 21:50         ` Vladimir Lazarenko
  1 sibling, 1 reply; 8+ messages in thread
From: john stultz @ 2005-10-28 21:44 UTC (permalink / raw)
  To: Claudio Scordino; +Cc: kernelnewbies, linux-kernel

On Fri, 2005-10-28 at 23:39 +0200, Claudio Scordino wrote:
> On Friday 28 October 2005 22:43, john stultz wrote:
> > On Fri, 2005-10-28 at 22:27 +0200, Claudio Scordino wrote:
> > > > > We have a dual-core AMD64 with the new kernel 2.6.14 and the
> > > > > timer goes backward...
> > > > >
> > > > >
> > > > > CONFIGURATION:
> > > > >
> > > > > Kernel: 2.6.14
> > > > > Distribution: Gentoo Linux 2005.0
> > > > > Processor: Athlon 64 x2 4200+ (dual core)
> > > > > Motherboard: Abit KN8
> > > > > Memory: 1GB PC3200
> > > > >
> > > > >
> > > > > PROBLEM:
> > > > >
> > > > > gettimeofday goes backward and returns values that are not monotonic,
> > > > > giving values that are smaller than values returned before.
> > > > >
> > > > > The system has been tested with timer as PIT, PIT/TSC and PM and the
> > > > > problem occurs with all the configurations.
> > > > >
> > > > > Here is the config file that we used for the PM configuration.
> > > > >
> > > > > Any suggestion ?
> > > >
> > > > Booting w/ idle=poll tends to work around this issue. You might check
> > > > with your motherboard vendor for an updated BIOS that supports HPET or
> > > > the ACPI PM timer.
> > >
> > > We already updated the BIOS with the latest version.
> > >
> > > Also the booting command idle=poll doesn't work.
> >
> > Hmm. Not sure then. Is this a new regression on the same hardware?
> 
> Yes, we tried with idle=poll and the problem occurred again.

Sorry for the confusion, I meant if the problem is new to 2.6.14, or if
it also happened with 2.6.13?

> > Would you mind filing a bug (http://bugzilla.kernel.org )on this and
> > attaching your config and dmesg there?
> 
> Sure.

Please assign it to me or add me to the cc list.

thanks
-john


^ permalink raw reply	[flat|nested] 8+ messages in thread

* Re: Bug: timer going backward on a dual core
  2005-10-28 21:44         ` john stultz
@ 2005-10-30 22:13           ` Claudio Scordino
  0 siblings, 0 replies; 8+ messages in thread
From: Claudio Scordino @ 2005-10-30 22:13 UTC (permalink / raw)
  To: john stultz; +Cc: kernelnewbies, linux-kernel

> > > > > > We have a dual-core AMD64 with the new kernel 2.6.14 and the
> > > > > > timer goes backward...
> > > > > >
> > > > > >
> > > > > > CONFIGURATION:
> > > > > >
> > > > > > Kernel: 2.6.14
> > > > > > Distribution: Gentoo Linux 2005.0
> > > > > > Processor: Athlon 64 x2 4200+ (dual core)
> > > > > > Motherboard: Abit KN8
> > > > > > Memory: 1GB PC3200
> > > > > >
> > > > > >
> > > > > > PROBLEM:
> > > > > >
> > > > > > gettimeofday goes backward and returns values that are not
> > > > > > monotonic, giving values that are smaller than values returned
> > > > > > before.
> > > > > >
> > > > > > The system has been tested with timer as PIT, PIT/TSC and PM and
> > > > > > the problem occurs with all the configurations.
> > > > > >
> > > > > > Here is the config file that we used for the PM configuration.
> > > > > >
> > > > > > Any suggestion ?
> > > > >
> > > > > Booting w/ idle=poll tends to work around this issue. You might
> > > > > check with your motherboard vendor for an updated BIOS that
> > > > > supports HPET or the ACPI PM timer.
> > > >
> > > > We already updated the BIOS with the latest version.
> > > >
> > > > Also the booting command idle=poll doesn't work.
> > >
> > > Hmm. Not sure then. Is this a new regression on the same hardware?
> >
> > Yes, we tried with idle=poll and the problem occurred again.
>
> Sorry for the confusion, I meant if the problem is new to 2.6.14, or if
> it also happened with 2.6.13?

Sorry, I didn't understand. It happened also with the old versions of the 
kernel. The only temporary solution that we've found is to disable one 
processor :(

>
> > > Would you mind filing a bug (http://bugzilla.kernel.org )on this and
> > > attaching your config and dmesg there?
> >
> > Sure.
>
> Please assign it to me or add me to the cc list.

Done.

Thanks,

                Claudio

^ permalink raw reply	[flat|nested] 8+ messages in thread

* Re: Bug: timer going backward on a dual core
  2005-10-28 21:39       ` Claudio Scordino
  2005-10-28 21:44         ` john stultz
@ 2005-10-28 21:50         ` Vladimir Lazarenko
  1 sibling, 0 replies; 8+ messages in thread
From: Vladimir Lazarenko @ 2005-10-28 21:50 UTC (permalink / raw)
  To: Claudio Scordino; +Cc: john stultz, kernelnewbies, linux-kernel

[-- Attachment #1: Type: text/plain, Size: 1271 bytes --]

>>>>>We have a dual-core AMD64 with the new kernel 2.6.14 and the
>>>>>timer goes backward...
>>>>>
>>>>>
>>>>>CONFIGURATION:
>>>>>
>>>>>Kernel: 2.6.14
>>>>>Distribution: Gentoo Linux 2005.0
>>>>>Processor: Athlon 64 x2 4200+ (dual core)
>>>>>Motherboard: Abit KN8
>>>>>Memory: 1GB PC3200
>>>>>
>>>>>
>>>>>PROBLEM:
>>>>>
>>>>>gettimeofday goes backward and returns values that are not monotonic,
>>>>>giving values that are smaller than values returned before.
>>>>>
>>>>>The system has been tested with timer as PIT, PIT/TSC and PM and the
>>>>>problem occurs with all the configurations.
>>>>>
>>>>>Here is the config file that we used for the PM configuration.
>>>>>
>>>>>Any suggestion ?
>>>>
>>>>Booting w/ idle=poll tends to work around this issue. You might check
>>>>with your motherboard vendor for an updated BIOS that supports HPET or
>>>>the ACPI PM timer.
>>>
>>>We already updated the BIOS with the latest version.
>>>
>>>Also the booting command idle=poll doesn't work.
>>
>>Hmm. Not sure then. Is this a new regression on the same hardware?
> Yes, we tried with idle=poll and the problem occurred again.

Very strange, idle=poll fixed it for us just fine.

Configuration we use is as follows:
Athlon 64 X2 3800+
Debian 32-bit
Tyan K8E
4G PC3200

Vladimir

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^ permalink raw reply	[flat|nested] 8+ messages in thread

end of thread, other threads:[~2005-10-30 22:13 UTC | newest]

Thread overview: 8+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2005-10-28 19:09 Bug: timer going backward on a dual core Claudio Scordino
2005-10-28 19:30 ` john stultz
2005-10-28 20:27   ` Claudio Scordino
2005-10-28 20:43     ` john stultz
2005-10-28 21:39       ` Claudio Scordino
2005-10-28 21:44         ` john stultz
2005-10-30 22:13           ` Claudio Scordino
2005-10-28 21:50         ` Vladimir Lazarenko

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