Messages in this thread | | | From | "Rafael J. Wysocki" <> | Subject | Re: Lots of disk activity on resume from s2ram | Date | Tue, 16 Oct 2007 14:12:26 +0200 |
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On Monday, 15 October 2007 23:53, Johan Brannlund wrote: > Hi. I've noticed that with recent kernels (starting somewhere between > 2.6.20 and 2.6.22) I sometimes get *lots* of disk activity on resume from > suspend to ram. About 2/3 of the time, the system resumes normally but in > the remaining 1/3 of the time, the hard drive light stays on almost solid > and the machine is very, very slow to respond. The only way I've found to > reliably recover from this is if I can get to a command prompt fast > enough and do "shutdown -r now". There's not much cpu activity at all, it > just seems to be disk io that's killing interactivity. This also happens > if I resume just from an empty gnome desktop with no applications > running, so I don't think it's due to swapping. > > Some kernels affected: 2.6.22, 2.6.23+hrt patches, Ubuntu Gutsy kernel > (2.6.22-14). These are all 64-bit kernels running on an HP nx6125 laptop > - single-core Turion 64 processor, 1 gig of ram. To the best of my > recollection, this problem did *not* appear with 2.6.20. > > I put some dmesg output from the vm block dumping and some vmstat output > at http://nullinfinity.org/tmp/s2ram/ . The dmesg logs are from the same > resume, just a little while apart. The vmstat is from a different resume. > > Any workarounds, patches, tips for further debugging etc would be > appreciated.
Please file a bug report at http://bugzilla.kernel.org , under "Power management"->Hibernation/Suspend and add my address to the CC list.
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