2.6.19-rc5: grub is much slower resuming from suspend-to-disk than in 2.6.18

[Andrey Borzenkov <arvidjaar@mail.ru>]

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This is rather funny; in 2.6.19-rc5 grub is *really* slow loading kernel when 
I switch on the system after suspend to disk. Actually, after kernel has been 
loaded, the whole resuming (up to the point I have usable desktop again) 
takes about three time less than the process of loading kernel + initrd. 
During loading disk LED is constantly lit. This almost looks like kernel 
leaves HDD in some strange state, although I always assumed HDD/IDE is 
completely reinitialized in this case.

Some data:

{pts/0}% grub --version
grub (GNU GRUB 0.97)
{pts/0}% LC_ALL=C ls -l /boot/*2.6.19*
- -rw-r--r-- 1 root root  679116 Nov 11 13:29 /boot/System.map-2.6.19-rc5-1avb
- -rw-r--r-- 1 root root   49252 Nov 11 13:29 /boot/config-2.6.19-rc5-1avb
- -rw-r--r-- 1 root root  692341 Nov 11 13:29 /boot/initrd-2.6.19-rc5-1avb.img
- -rw-r--r-- 1 root root    1493 Nov 11 14:18 /boot/kernel.h-2.6.19-rc5-1avb
- -rw-r--r-- 1 root root 1460690 Nov 11 13:29 /boot/vmlinuz-2.6.19-rc5-1avb

dmesg:

Linux version 2.6.19-rc5-1avb (bor@cooker) (gcc version 4.1.1 20060724 
(prerelease) (4.1.1-3mdk)) #1 Sat Nov 11 13:02:51 MSK 2006
BIOS-provided physical RAM map:
 BIOS-e820: 0000000000000000 - 000000000009fc00 (usable)
 BIOS-e820: 000000000009fc00 - 00000000000a0000 (reserved)
 BIOS-e820: 00000000000e0000 - 00000000000eee00 (reserved)
 BIOS-e820: 00000000000eee00 - 00000000000ef000 (ACPI NVS)
 BIOS-e820: 00000000000ef000 - 0000000000100000 (reserved)
 BIOS-e820: 0000000000100000 - 000000001ef60000 (usable)
 BIOS-e820: 000000001ef60000 - 000000001ef70000 (ACPI data)
 BIOS-e820: 000000001ef70000 - 0000000020000000 (reserved)
 BIOS-e820: 00000000fff80000 - 0000000100000000 (reserved)
495MB LOWMEM available.
Entering add_active_range(0, 0, 126816) 0 entries of 256 used
Zone PFN ranges:
  DMA             0 ->     4096
  Normal       4096 ->   126816
early_node_map[1] active PFN ranges
    0:        0 ->   126816
On node 0 totalpages: 126816
  DMA zone: 32 pages used for memmap
  DMA zone: 0 pages reserved
  DMA zone: 4064 pages, LIFO batch:0
  Normal zone: 958 pages used for memmap
  Normal zone: 121762 pages, LIFO batch:31
DMI 2.3 present.
ACPI: RSDP (v000 TOSHIB                                ) @ 0x000f0090
ACPI: RSDT (v001 TOSHIB 750      0x00970814 TASM 0x04010000) @ 0x1ef60000
ACPI: FADT (v002 TOSHIB 750      0x00970814 TASM 0x04010000) @ 0x1ef60054
ACPI: DSDT (v001 TOSHIB 4000     0x20020417 MSFT 0x0100000a) @ 0x00000000
ACPI: PM-Timer IO Port: 0xee08
Allocating PCI resources starting at 30000000 (gap: 20000000:dff80000)
Detected 747.678 MHz processor.
Built 1 zonelists.  Total pages: 125826
Kernel command line: root=/dev/hda2 BOOT_IMAGE=2.6.19-rc5-1avb hdc=ide-cd 
resume=/dev/hda1 splash=silent vga=791
Local APIC disabled by BIOS -- you can enable it with "lapic"
mapped APIC to ffffd000 (013f8000)
Enabling fast FPU save and restore... done.
Enabling unmasked SIMD FPU exception support... done.
Initializing CPU#0
PID hash table entries: 2048 (order: 11, 8192 bytes)
Console: colour dummy device 80x25
Lock dependency validator: Copyright (c) 2006 Red Hat, Inc., Ingo Molnar
... MAX_LOCKDEP_SUBCLASSES:    8
... MAX_LOCK_DEPTH:          30
... MAX_LOCKDEP_KEYS:        2048
... CLASSHASH_SIZE:           1024
... MAX_LOCKDEP_ENTRIES:     8192
... MAX_LOCKDEP_CHAINS:      8192
... CHAINHASH_SIZE:          4096
 memory used by lock dependency info: 904 kB
 per task-struct memory footprint: 1200 bytes
Dentry cache hash table entries: 65536 (order: 6, 262144 bytes)
Inode-cache hash table entries: 32768 (order: 5, 131072 bytes)
Memory: 496600k/507264k available (1710k kernel code, 10180k reserved, 744k 
data, 188k init, 0k highmem)
virtual kernel memory layout:
    fixmap  : 0xfffb7000 - 0xfffff000   ( 288 kB)
    vmalloc : 0xdf800000 - 0xfffb5000   ( 519 MB)
    lowmem  : 0xc0000000 - 0xdef60000   ( 495 MB)
      .init : 0xc03aa000 - 0xc03d9000   ( 188 kB)
      .data : 0xc02abb87 - 0xc0365c94   ( 744 kB)
      .text : 0xc0100000 - 0xc02abb87   (1710 kB)
Checking if this processor honours the WP bit even in supervisor mode... Ok.
Calibrating delay using timer specific routine.. 1497.01 BogoMIPS (lpj=748508)
Mount-cache hash table entries: 512
CPU: After generic identify, caps: 0387f9ff 00000000 00000000 00000000 
00000000 00000000 00000000
CPU: L1 I cache: 16K, L1 D cache: 16K
CPU: L2 cache: 256K
CPU serial number disabled.
CPU: After all inits, caps: 0383f9ff 00000000 00000000 00000040 00000000 
00000000 00000000
Intel machine check architecture supported.
Intel machine check reporting enabled on CPU#0.
CPU: Intel Pentium III (Coppermine) stepping 0a
Checking 'hlt' instruction... OK.
ACPI: Core revision 20060707
ACPI: setting ELCR to 0200 (from 0a00)
checking if image is initramfs... it is
Freeing initrd memory: 676k freed
NET: Registered protocol family 16
ACPI: bus type pci registered
PCI: PCI BIOS revision 2.10 entry at 0xfe5ae, last bus=5
PCI: Using configuration type 1
Setting up standard PCI resources
ACPI: Interpreter enabled
ACPI: Using PIC for interrupt routing
ACPI: PCI Root Bridge [PCI0] (0000:00)
PCI: Probing PCI hardware (bus 00)
ACPI: Assume root bridge [\_SB_.PCI0] bus is 0
PCI quirk: region ee00-ee3f claimed by ali7101 ACPI
PCI quirk: region ef00-ef1f claimed by ali7101 SMB
PCI: Firmware left 0000:00:0a.0 e100 interrupts enabled, disabling
Boot video device is 0000:01:00.0
ACPI: PCI Interrupt Routing Table [\_SB_.PCI0._PRT]
ACPI: PCI Interrupt Link [LNKA] (IRQs 3 4 5 6 7 10 *11)
ACPI: PCI Interrupt Link [LNKB] (IRQs 3 4 5 6 7 10 *11)
ACPI: PCI Interrupt Link [LNKC] (IRQs 3 4 5 6 7 10 *11)
ACPI: PCI Interrupt Link [LNKD] (IRQs 3 4 5 6 7 10 *11)
ACPI: PCI Interrupt Link [LNKG] (IRQs 3 4 5 6 7 10 *11)
ACPI: PCI Interrupt Link [LNKH] (IRQs 3 4 5 6 7 10 *11)
ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PCI1._PRT]
ACPI: Power Resource [PFAN] (off)
Linux Plug and Play Support v0.97 (c) Adam Belay
pnp: PnP ACPI init
pnp: PnP ACPI: found 12 devices
PCI: Using ACPI for IRQ routing
PCI: If a device doesn't work, try "pci=routeirq".  If it helps, post a report
PCI: Bridge: 0000:00:01.0
  IO window: disabled.
  MEM window: f7f00000-fdffffff
  PREFETCH window: 3c000000-3c0fffff
PCI: Bus 2, cardbus bridge: 0000:00:10.0
  IO window: 00001000-000010ff
  IO window: 00001400-000014ff
  PREFETCH window: 30000000-31ffffff
  MEM window: 32000000-33ffffff
PCI: Bus 6, cardbus bridge: 0000:00:11.0
  IO window: 00001800-000018ff
  IO window: 00001c00-00001cff
  PREFETCH window: 34000000-35ffffff
  MEM window: 36000000-37ffffff
PCI: Bus 10, cardbus bridge: 0000:00:11.1
  IO window: 00002000-000020ff
  IO window: 00002400-000024ff
  PREFETCH window: 38000000-39ffffff
  MEM window: 3a000000-3bffffff
PCI: Setting latency timer of device 0000:00:01.0 to 64
PCI: Enabling device 0000:00:10.0 (0000 -> 0003)
ACPI: PCI Interrupt Link [LNKC] enabled at IRQ 11
PCI: setting IRQ 11 as level-triggered
ACPI: PCI Interrupt 0000:00:10.0[A] -> Link [LNKC] -> GSI 11 (level, low) -> 
IRQ 11
PCI: Enabling device 0000:00:11.0 (0000 -> 0003)
ACPI: PCI Interrupt Link [LNKA] enabled at IRQ 11
ACPI: PCI Interrupt 0000:00:11.0[A] -> Link [LNKA] -> GSI 11 (level, low) -> 
IRQ 11
PCI: Enabling device 0000:00:11.1 (0000 -> 0003)
ACPI: PCI Interrupt Link [LNKB] enabled at IRQ 11
ACPI: PCI Interrupt 0000:00:11.1[B] -> Link [LNKB] -> GSI 11 (level, low) -> 
IRQ 11
NET: Registered protocol family 2
IP route cache hash table entries: 4096 (order: 2, 16384 bytes)
TCP established hash table entries: 16384 (order: 7, 655360 bytes)
TCP bind hash table entries: 8192 (order: 6, 360448 bytes)
TCP: Hash tables configured (established 16384 bind 8192)
TCP reno registered
audit: initializing netlink socket (disabled)
audit(1163305574.813:1): initialized
io scheduler noop registered
io scheduler anticipatory registered
io scheduler deadline registered
io scheduler cfq registered (default)
Activating ISA DMA hang workarounds.
vesafb: framebuffer at 0xfc000000, mapped to 0xdf880000, using 3072k, total 
16384k
vesafb: mode is 1024x768x16, linelength=2048, pages=9
vesafb: protected mode interface info at c000:775e
vesafb: pmi: set display start = c00c777f, set palette = c00c77e2
vesafb: scrolling: redraw
vesafb: Truecolor: size=0:5:6:5, shift=0:11:5:0
Console: switching to colour frame buffer device 128x48
fb0: VESA VGA frame buffer device
Real Time Clock Driver v1.12ac
RAMDISK driver initialized: 16 RAM disks of 32000K size 1024 blocksize
NET: Registered protocol family 1
Using IPI Shortcut mode
Time: tsc clocksource has been installed.
ACPI: (supports S0 S3 S4 S5)
BIOS EDD facility v0.16 2004-Jun-25, 1 devices found
Freeing unused kernel memory: 188k freed
Write protecting the kernel read-only data: 269k
PNP: PS/2 Controller [PNP0303:KBC,PNP0f13:PS2M] at 0x60,0x64 irq 1,12
serio: i8042 KBD port at 0x60,0x64 irq 1
serio: i8042 AUX port at 0x60,0x64 irq 12
input: AT Translated Set 2 keyboard as /class/input/input0
Uniform Multi-Platform E-IDE driver Revision: 7.00alpha2
ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
ALI15X3: IDE controller at PCI slot 0000:00:04.0
ACPI: Unable to derive IRQ for device 0000:00:04.0
ACPI: PCI Interrupt 0000:00:04.0[A]: no GSI
ALI15X3: chipset revision 195
ALI15X3: not 100% native mode: will probe irqs later
    ide0: BM-DMA at 0xeff0-0xeff7, BIOS settings: hda:DMA, hdb:pio
    ide1: BM-DMA at 0xeff8-0xefff, BIOS settings: hdc:DMA, hdd:pio
Probing IDE interface ide0...
hda: IC25N020ATDA04-0, ATA DISK drive
ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
Probing IDE interface ide1...
hdc: TOSHIBA DVD-ROM SD-C2502, ATAPI CD/DVD-ROM drive
ide1 at 0x170-0x177,0x376 on irq 15
hda: max request size: 128KiB
hda: 39070080 sectors (20003 MB) w/1806KiB Cache, CHS=38760/16/63, UDMA(33)
hda: cache flushes not supported
 hda: hda1 hda2
ReiserFS: hda2: found reiserfs format "3.6" with standard journal
ReiserFS: hda2: using ordered data mode
ReiserFS: hda2: journal params: device hda2, size 8192, journal first block 
18, max trans len 1024, max batch 900, max commit age 30, max trans age 30
ReiserFS: hda2: checking transaction log (hda2)
ReiserFS: hda2: Using r5 hash to sort names
usbcore: registered new interface driver usbfs
usbcore: registered new interface driver hub
usbcore: registered new device driver usb
ohci_hcd: 2006 August 04 USB 1.1 'Open' Host Controller (OHCI) Driver (PCI)
ACPI: PCI Interrupt Link [LNKG] enabled at IRQ 11
ACPI: PCI Interrupt 0000:00:02.0[A] -> Link [LNKG] -> GSI 11 (level, low) -> 
IRQ 11
ohci_hcd 0000:00:02.0: OHCI Host Controller
ohci_hcd 0000:00:02.0: new USB bus registered, assigned bus number 1
ohci_hcd 0000:00:02.0: irq 11, io mem 0xf7eff000
usb usb1: configuration #1 chosen from 1 choice
hub 1-0:1.0: USB hub found
hub 1-0:1.0: 3 ports detected
Linux agpgart interface v0.101 (c) Dave Jones
agpgart: Detected ALi M1644 chipset
agpgart: AGP aperture is 64M @ 0xf0000000
Yenta: CardBus bridge found at 0000:00:10.0 [12a3:ab01]
Yenta: Enabling burst memory read transactions
Yenta: Using CSCINT to route CSC interrupts to PCI
Yenta: Routing CardBus interrupts to PCI
Yenta TI: socket 0000:00:10.0, mfunc 0x01000002, devctl 0x60
input: ImPS/2 Generic Wheel Mouse as /class/input/input1
mice: PS/2 mouse device common for all mice
Yenta: ISA IRQ mask 0x0000, PCI irq 11
Socket status: 30000011
Yenta: CardBus bridge found at 0000:00:11.0 [1179:0001]
Yenta: ISA IRQ mask 0x04b8, PCI irq 11
Socket status: 30000007
Yenta: CardBus bridge found at 0000:00:11.1 [1179:0001]
Yenta: ISA IRQ mask 0x04b8, PCI irq 11
Socket status: 30000007
pccard: PCMCIA card inserted into slot 0
cs: memory probe 0x0c0000-0x0fffff: excluding 0xc0000-0xcbfff 0xe0000-0xfffff
cs: memory probe 0x60000000-0x60ffffff: clean.
cs: memory probe 0xa0000000-0xa0ffffff: clean.
pcmcia: registering new device pcmcia0.0
ACPI: AC Adapter [ADP1] (on-line)
ACPI: Battery Slot [BAT1] (battery present)
ACPI: Battery Slot [BAT2] (battery absent)
ACPI: Power Button (FF) [PWRF]
ACPI: Lid Switch [LID]
ACPI: Transitioning device [FAN] to D3
ACPI: Transitioning device [FAN] to D3
ACPI: Fan [FAN] (off)
ACPI: CPU0 (power states: C1[C1] C2[C2])
ACPI: Thermal Zone [THRM] (29 C)
Time: acpi_pm clocksource has been installed.
wlags49_h1_cs v7.18 for PCMCIA, 03/31/2004 14:31:00 by Agere Systems, 
http://www.agere.com
*** Modified for kernel 2.6 by Andrey Borzenkov <arvidjaar@mail.ru> $Revision: 
27 $
*** Station Mode (STA) Support: YES
*** Access Point Mode (AP) Support: YES
eth0: PRI 31 variant 2 version 9.48
eth0: NIC 5 variant 2 version 1.02
eth0: Wireless, io_addr 0x100, irq 11, mac_address 00:02:2D:26:95:6C
toshiba_acpi: Toshiba Laptop ACPI Extras version 0.18
toshiba_acpi:     HCI method: \_SB_.VALD.GHCI
ACPI: Video Device [VGA] (multi-head: yes  rom: yes  post: no)
device-mapper: ioctl: 4.10.0-ioctl (2006-09-14) initialised: 
dm-devel@redhat.com
loop: loaded (max 8 devices)
Adding 500432k swap on /dev/hda1.  Priority:-1 extents:1 across:500432k
hdc: ATAPI 24X DVD-ROM drive, 128kB Cache, UDMA(33)
Uniform CD-ROM driver Revision: 3.20
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