Re: 2.6.1 slower than 2.4, smp/scsi/sw-raid/reiserfs

Philip Martin
2004-02-03T16:46:14Z

Nick Piggin <piggin@cyberone.com.au> writes:

> OK now thats strange - you're definitely compiling the same kernel
> with the same .config and compiler?

It's definitely the same compiler (Debian's 2.95.4). I think the 2.4
and 2.6 configs have to be different, but they are similar, these are
the differences

< in 2.4
> in 2.6

< CONFIG_AUTOFS4_FS=y
> CONFIG_BLK_DEV_CRYPTOLOOP=m
> CONFIG_BLK_DEV_IDECD=m
< CONFIG_BLK_DEV_IDE_MODES=y
> CONFIG_CLEAN_COMPILE=y
> CONFIG_CRC32=m
> CONFIG_CRYPTO=y
> CONFIG_DUMMY_CONSOLE=y
> CONFIG_EPOLL=y
> CONFIG_EXPORTFS=m
> CONFIG_FB=y
> CONFIG_FB_ATY=m
> CONFIG_FB_ATY_CT=y
< CONFIG_FILTER=y
> CONFIG_FUTEX=y
> CONFIG_GENERIC_ISA_DMA=y
< CONFIG_HFSPLUS_FS=m
> CONFIG_HW_CONSOLE=y
> CONFIG_INPUT=y
> CONFIG_INPUT_KEYBOARD=y
> CONFIG_INPUT_MOUSE=y
> CONFIG_INPUT_MOUSEDEV=y
> CONFIG_INPUT_MOUSEDEV_PSAUX=y
> CONFIG_INPUT_MOUSEDEV_SCREEN_X=1024
> CONFIG_INPUT_MOUSEDEV_SCREEN_Y=768
> CONFIG_IOSCHED_AS=y
> CONFIG_IOSCHED_DEADLINE=y
> CONFIG_IOSCHED_NOOP=y
> CONFIG_KALLSYMS=y
< CONFIG_KCORE_ELF=y
> CONFIG_KEYBOARD_ATKBD=y
< CONFIG_LOG_BUF_SHIFT=0
> CONFIG_LOG_BUF_SHIFT=15
> CONFIG_MII=m
> CONFIG_MMU=y
> CONFIG_MOUSE_SERIAL=y
> CONFIG_OBSOLETE_MODPARM=y
> CONFIG_PC=y
> CONFIG_PREEMPT=y
> CONFIG_PROC_KCORE=y
> CONFIG_SCSI_PROC_FS=y
< CONFIG_SD_EXTRA_DEVS=40
< CONFIG_SERIAL=y
> CONFIG_SERIAL_8250=y
> CONFIG_SERIAL_8250_NR_UARTS=4
> CONFIG_SERIAL_CORE=y
> CONFIG_SERIO=y
> CONFIG_SERIO_I8042=y
> CONFIG_SERIO_SERPORT=y
> CONFIG_SOUND_GAMEPORT=y
< CONFIG_SR_EXTRA_DEVS=2
> CONFIG_STANDALONE=y
> CONFIG_SWAP=y
> CONFIG_X86_BIOS_REBOOT=y
> CONFIG_X86_EXTRA_IRQS=y
< CONFIG_X86_F00F_WORKS_OK=y
> CONFIG_X86_FIND_SMP_CONFIG=y
< CONFIG_X86_HAS_TSC=y
> CONFIG_X86_HT=y
> CONFIG_X86_INTEL_USERCOPY=y
> CONFIG_X86_MPPARSE=y
> CONFIG_X86_PC=y
< CONFIG_X86_PGE=y
> CONFIG_X86_SMP=y
> CONFIG_X86_TRAMPOLINE=y

--
Philip Martin