Bug 6139
| Summary: | Kernel 2.6.* -686 system very slow on a system with 1GB of memory: caching bug | ||
|---|---|---|---|
| Product: | Memory Management | Reporter: | Mark Sandler (sandler) |
| Component: | Other | Assignee: | Zwane Mwaikambo (zwane) |
| Status: | REJECTED WILL_NOT_FIX | ||
| Severity: | normal | CC: | bunk, protasnb, zwane |
| Priority: | P2 | ||
| Hardware: | i386 | ||
| OS: | Linux | ||
| Kernel Version: | 2.6.22-14 | Subsystem: | |
| Regression: | Yes | Bisected commit-id: | |
| Attachments: | dmesg contents | ||
|
Description
Mark Sandler
2006-02-27 12:20:44 UTC
Could you attach the full `dmesg -s 1000000' output, please? And the contents of /proc/mtrr. We seem to have more of these mtrr problems in 2.6 than we did in 2.4 and I continue to suspect that we broke something. You'll probably find that you can fix things up in early init by reading Documentation/mtrr.txt and playing with the setting. Could you test the latest -mm kernel and set the VMSPLIT_2G option, it should fail in the very same way. Also do you have an onboard/builtin to motherboard video card? If so, which "UMA" memory size options do you have in your BIOS? Here is /proc/mtrr: reg00: base=0x00000000 ( 0MB), size= 512MB: write-back, count=1 reg01: base=0x20000000 ( 512MB), size= 256MB: write-back, count=1 reg02: base=0x30000000 ( 768MB), size= 128MB: write-back, count=1 reg03: base=0x38000000 ( 896MB), size= 64MB: write-back, count=1 reg04: base=0x3c000000 ( 960MB), size= 32MB: write-back, count=1 reg05: base=0x3e000000 ( 992MB), size= 16MB: write-back, count=1 reg06: base=0x3f800000 (1016MB), size= 8MB: write-combining, count=1 reg07: base=0xf0000000 (3840MB), size= 128MB: write-combining, count=4 Yes, I have standard Intel 82852/855GM card, I will check UMA next time i reboot, but i believe it is 128MB. Dmesg -- do you want me to send the contents of it with the old kernel and mem_4g turned on? The current output is: re is not ready [0x1][0x700300] [4294707.128000] codec_semaphore: semaphore is not ready [0x1][0x700300] ... same thing repeated many-many times.... [4294707.390000] codec_semaphore: semaphore is not ready [0x1][0x700300] [4294707.440000] intel8x0_measure_ac97_clock: measured 49311 usecs [4294707.440000] intel8x0: clocking to 48000 [4294707.840000] codec_semaphore: semaphore is not ready [0x1][0x700300] [4294707.840000] codec_write 0: semaphore is not ready for register 0x2 [4294707.862000] ieee80211_crypt: registered algorithm 'NULL' [4294707.878000] ieee80211: 802.11 data/management/control stack, 1.0.3 [4294707.878000] ieee80211: Copyright (C) 2004-2005 Intel Corporation <jketreno@linux.intel.com> [4294707.950000] ipw2100: Intel(R) PRO/Wireless 2100 Network Driver, 1.1.2 [4294707.950000] ipw2100: Copyright(c) 2003-2005 Intel Corporation [4294707.955000] ACPI: PCI Interrupt 0000:01:04.0[A] -> Link [LNKC] -> GSI 4 (level, low) -> IRQ 4 [4294707.955000] ipw2100: Detected Intel PRO/Wireless 2100 Network Connection [4294708.378000] Linux Kernel Card Services [4294708.378000] options: [pci] [cardbus] [pm] [4294708.398000] ACPI: PCI Interrupt 0000:01:05.0[A] -> Link [LNKB] -> GSI 11 (level, low) -> IRQ 11 [4294708.398000] Yenta: CardBus bridge found at 0000:01:05.0 [1043:1744] [4294708.518000] Yenta: ISA IRQ mask 0x0000, PCI irq 11 [4294708.518000] Socket status: 30000006 [4294708.596000] ohci1394: $Rev: 1250 $ Ben Collins <bcollins@debian.org> [4294708.596000] ACPI: PCI Interrupt 0000:01:05.1[B] -> Link [LNKA] -> GSI 11 (level, low) -> IRQ 11 [4294708.650000] ohci1394: fw-host0: OHCI-1394 1.0 (PCI): IRQ=[11] MMIO=[fe8ff000-fe8ff7ff] Max Packet=[2048] [4294708.729000] e100: Intel(R) PRO/100 Network Driver, 3.4.8-k2-NAPI [4294708.729000] e100: Copyright(c) 1999-2005 Intel Corporation [4294708.730000] ACPI: PCI Interrupt Link [LNKE] enabled at IRQ 11 [4294708.730000] ACPI: PCI Interrupt 0000:01:08.0[A] -> Link [LNKE] -> GSI 11 (level, low) -> IRQ 11 [4294708.754000] e100: eth1: e100_probe: addr 0xfe8fe000, irq 11, MAC addr 00:0C:6E:AF:AE:4F [4294709.887000] Real Time Clock Driver v1.12 [4294709.916000] ieee1394: Host added: ID:BUS[0-00:1023] GUID[00e0180003104ad3] [4294710.022000] input: PC Speaker [4294710.245000] hdc: ATAPI 24X DVD-ROM CD-R/RW drive, 2048kB Cache [4294710.245000] Uniform CD-ROM driver Revision: 3.20 [4294711.813000] NET: Registered protocol family 17 [4294715.425000] NET: Registered protocol family 10 [4294715.425000] Disabled Privacy Extensions on device c02d91c0(lo) [4294715.425000] IPv6 over IPv4 tunneling driver [4294716.507000] ACPI: AC Adapter [AC0] (off-line) [4294716.534000] Asus Laptop ACPI Extras version 0.29 [4294716.537000] M3N model detected, supported [4294716.634000] ACPI: Battery Slot [BAT0] (battery present) [4294716.636000] ACPI: Battery Slot [BAT1] (battery absent) [4294716.652000] ACPI: Power Button (FF) [PWRF] [4294716.652000] ACPI: Sleep Button (CM) [SLPB] [4294716.652000] ACPI: Lid Switch [LID] [4294716.805000] ACPI: Video Device [VGA] (multi-head: yes rom: no post: no) [4294721.735000] [drm] Initialized drm 1.0.0 20040925 [4294721.749000] ACPI: PCI Interrupt 0000:00:02.0[A] -> Link [LNKA] -> GSI 11 (level, low) -> IRQ 11 [4294721.753000] [drm] Initialized i915 1.2.0 20040405 on minor 0: Intel Corporation 82852/855GM Integrated Graphics Device [4294721.771000] [drm] Initialized i915 1.2.0 20040405 on minor 1: Intel Corporation 82852/855GM Integrated Graphics Device (#2) [4294721.771000] mtrr: base(0xf0020000) is not aligned on a size(0x834000) boundary [4294725.494000] apm: BIOS version 1.2 Flags 0x03 (Driver version 1.16ac) [4294725.494000] apm: overridden by ACPI. [4294725.878000] eth0: no IPv6 routers present [4294727.214000] speedstep_centrino: disagrees about version of symbol struct_module [4294728.781000] Bluetooth: Core ver 2.7 [4294728.781000] NET: Registered protocol family 31 [4294728.781000] Bluetooth: HCI device and connection manager initialized [4294728.781000] Bluetooth: HCI socket layer initialized [4294728.818000] Bluetooth: L2CAP ver 2.7 [4294728.818000] Bluetooth: L2CAP socket layer initialized [4294728.862000] Bluetooth: RFCOMM ver 1.5 [4294728.862000] Bluetooth: RFCOMM socket layer initialized [4294728.862000] Bluetooth: RFCOMM TTY layer initialized [4294757.464000] codec_semaphore: semaphore is not ready [0x1][0x700300] [4294757.464000] codec_write 0: semaphore is not ready for register 0x2c [4294757.698000] codec_semaphore: semaphore is not ready [0x1][0x700300] [4294757.698000] codec_write 0: semaphore is not ready for register 0x2c [4294757.943000] codec_semaphore: semaphore is not ready [0x1][0x700300] [4294757.943000] codec_write 0: semaphore is not ready for register 0x2c [4294840.644000] atkbd.c: Unknown key released (translated set 2, code 0xaa on isa0060/serio0). [4294840.644000] atkbd.c: Use 'setkeycodes e02a <keycode>' to make it known. [4295498.399000] atkbd.c: Unknown key released (translated set 2, code 0xaa on isa0060/serio0). [4295498.399000] atkbd.c: Use 'setkeycodes e02a <keycode>' to make it known. [4295498.607000] atkbd.c: Unknown key pressed (translated set 2, code 0xaa on isa0060/serio0). [4295498.607000] atkbd.c: Use 'setkeycodes e02a <keycode>' to make it known. [4295691.566000] atkbd.c: Unknown key released (translated set 2, code 0xaa on isa0060/serio0). [4295691.566000] atkbd.c: Use 'setkeycodes e02a <keycode>' to make it known. [4295691.693000] atkbd.c: Unknown key pressed (translated set 2, code 0xaa on isa0060/serio0). [4295691.693000] atkbd.c: Use 'setkeycodes e02a <keycode>' to make it known. [4295691.846000] atkbd.c: Unknown key released (translated set 2, code 0xaa on isa0060/serio0). [4295691.846000] atkbd.c: Use 'setkeycodes e02a <keycode>' to make it known. [4295691.998000] atkbd.c: Unknown key pressed (translated set 2, code 0xaa on isa0060/serio0). [4295691.998000] atkbd.c: Use 'setkeycodes e02a <keycode>' to make it known. [4295692.126000] atkbd.c: Unknown key released (translated set 2, code 0xaa on isa0060/serio0). [4295692.126000] atkbd.c: Use 'setkeycodes e02a <keycode>' to make it known. [4295692.278000] atkbd.c: Unknown key pressed (translated set 2, code 0xaa on isa0060/serio0). [4295692.278000] atkbd.c: Use 'setkeycodes e02a <keycode>' to make it known. I am fairly certain it's connected to the onboard video card memory mapping types. Can you try a combination of onboard video memory size and report what occurs? Yes, please send dmesg with mem_4g, thanks. Created attachment 7504 [details]
dmesg contents
Here is a dmesg when the system booted very slowly (actually under ubuntu it
takes only 10 minutes to boot (normally <2), under debian it was about 45...)
i can't change it the amount of video memory from bios for some reason... Is there any way i can do it once os loads? Not that i know of, that's unfortunate as that would have helped narrow things down.Have you also tried manually setting the 8MB region as writeback? Mark, does the problem still exist with latest kernel? The dmesg output that you provided doesn't have e820 map unfortunately. Is it possible to collect whole boot trace (with serial console) and provide one for 2.6 and another one with older version when it works fine? Also, mtrr for both cases? Thanks. Please reopen this bug if: - it is still present with kernel 2.6.22 and - you can provide the requested information. This bug is still present as of 2.6.22.14. I would be happy to provide any info needed. There isn't really much the kernel can do about this as it simply doesn't know when the BIOS is misconfiguring the registers. You can however hand reconfigure them via /proc/mtrr Closing ss WILL_NOT_FIX therefore |