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SubjectRe: does hibernate to disk try hard enough to free memory?
Date
On Tuesday, February 22, 2011, Martin Steigerwald wrote:
> Hi!
>
> Since Radeon KMS I often have it that my ThinkPad T42 with 2 MiB of RAM is
> not able to allocate memory for the hibernation image. Before KMS
> hibernation only very rarely failed for that reason.
>
> Often I run without compositing at all as I believe this might spare some
> pages as well. But this doesn't always help.
>
> It complains that to less pages could be freed. For example with kernel
> 2.6.37:
>
> Feb 16 00:15:00 shambhala kernel: PM: Creating hibernation image:
> Feb 16 00:15:00 shambhala kernel: PM: Need to copy 186577 pages
> Feb 16 00:15:00 shambhala kernel: PM: Normal pages needed: 114411 + 1024,
> available pages: 112767
> Feb 16 00:15:00 shambhala kernel: PM: Not enough free memory
> Feb 16 00:15:00 shambhala kernel: PM: Error -12 creating hibernation image
> Feb 16 00:15:00 shambhala kernel: Extended CMOS year: 2000
> Feb 16 00:15:00 shambhala kernel: ACPI: Waking up from system sleep state
> S4
> Feb 16 00:15:00 shambhala kernel: PM: early recover of devices complete
> after 0.376 msecs

What's the value in /sys/power/image_size?

Rafael


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