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SubjectRe: Suspend to memory is freezing my machine
Robert Hancock pisze:
> Jacek Luczak wrote:
>> Robert Hancock pisze:
>>> Jacek Luczak wrote:
>>>> Rafael J. Wysocki pisze:
>>>>> On Sunday, 4 of May 2008, Zdenek Kabelac wrote:
>>>>>> Hello
>>>>> Hi,
>>>>>
>>>>>> With recent 2.6.25 & 2.6.26-rc1 git (around 1 week) I get
>>>>>> occasionally
>>>>>> complete freeze of my T61 during suspend. (dual core, 2GB).
>>>>> How reproducible is this?
>>>>>
>>>>>> I'm running kernel with no_console_suspend - but all I can see is
>>>>>> blinking cursor on an empty screen - thus even when I run kernel with
>>>>>> most debug options turned on, I can't pass more details so far. I
>>>>>> run
>>>>>> suspend with with SD card in - so maybe some update in the MMC driver
>>>>>> might be responsible for this ?
>>>>>>
>>>>>> Also - I think that option no_console_suspend doens't work
>>>>>> correctly -
>>>>>> as many times with suspend I do not see any log message on my console
>>>>>> screen. However sometimes the log is shown.
>>>>> It would be helpful if you could verify if:
>>>>>
>>>>> (1) The problem occurs without no_console_suspend.
>>>>> (2) The problem occurs without the SD card.
>>>>>
>>>> Hi Rafael,
>>>>
>>>> same problem here, although I was able to resume system (it's
>>>> basically Intel
>>>> machine) , but it was unusable - I was able to switch between
>>>> terminals and see
>>>> output from kernel. So there was:
>>>> - Disabling irq #19;
>>>> - some kind of lock spinning on disk:
>>>> IDE interface: Intel Corporation 82801GBM/GHM (ICH7 Family) Serial ATA
>>>> Storage
>>>> Controller IDE (rev 02)
>>>> but I can't provide more output of that lock now - no sign in logs.
>>>>
>>>> I've made some successful suspend/resume all without sound card active
>>>> without
>>>> problem. Those appear with sound card active, but I must take closer
>>>> look - will
>>>> send info later.
>>> Can you post your dmesg and /proc/interrupts output from normal bootup ?
>>
>> Sure I can ;)
>>
>> 1) /proc/interrupts
>>
>> CPU0 CPU1
>> 0: 11846981 0 IO-APIC-edge timer
>> 1: 30098 0 IO-APIC-edge i8042
>> 8: 3 0 IO-APIC-edge rtc
>> 9: 13 0 IO-APIC-fasteoi acpi
>> 12: 1776540 0 IO-APIC-edge i8042
>> 14: 39 0 IO-APIC-edge ata_piix
>> 15: 0 0 IO-APIC-edge ata_piix
>> 16: 54570 44642 IO-APIC-fasteoi i915@pci:0000:00:02.0
>> 17: 0 0 IO-APIC-fasteoi uhci_hcd:usb3
>> 18: 0 0 IO-APIC-fasteoi uhci_hcd:usb4
>> 19: 98243 0 IO-APIC-fasteoi ata_piix, uhci_hcd:usb5
>> 21: 1650574 0 IO-APIC-fasteoi HDA Intel
>> 23: 0 0 IO-APIC-fasteoi ehci_hcd:usb1,
>> uhci_hcd:usb2
>> 220: 14263 0 PCI-MSI-edge iwl3945
>> 221: 1166041 1333296 PCI-MSI-edge eth0
>> NMI: 0 0 Non-maskable interrupts
>> LOC: 1104887 7534969 Local timer interrupts
>> RES: 633378 701351 Rescheduling interrupts
>> CAL: 16 28315 function call interrupts
>> TLB: 1721 2620 TLB shootdowns
>> TRM: 0 0 Thermal event interrupts
>> SPU: 0 0 Spurious interrupts
>> ERR: 0
>> MIS: 0
>>
>> 2) dmesg can here -> http://212.109.128.251/~difrost/linux-next/dmesg.log
>> 3) Kernel:
>> Linux difrost 2.6.25-07422-gb66e1f1-dirty #14 SMP Fri May 2 22:04:17
>> CEST 2008
>> i686 i686 i386 GNU/Linux
>> It's marked dirty because due to http://lkml.org/lkml/2008/5/2/405
>> patch applied.
>>
>> -Jacek
>>
>
> Well, if IRQ 19 got disabled, that's your SATA controller, so resume
> likely isn't going to work. Could be a libata problem? CCing linux-ide.

Yep, I know, that's why I pointed that out. Irq was disabled somehow in suspend
or resume process.

> BTW, if your BIOS offers an option to enable AHCI on your SATA
> controller then that would be a more optimal configuration (could get
> NCQ support), but that is an aside.

With AHCI I've got pretty bad timings (and I don't really know why!):

[root|20:49|~]$ cat sda_ahci_t

/dev/sda:
Timing cached reads: 1560 MB in 2.00 seconds = 780.51 MB/sec
Timing buffered disk reads: 102 MB in 3.02 seconds = 33.74 MB/sec
[root|20:49|~]$ cat sda_piix_t

/dev/sda:
Timing cached reads: 1544 MB in 2.00 seconds = 772.35 MB/sec
Timing buffered disk reads: 134 MB in 3.04 seconds = 44.05 MB/sec

-Jacek


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