Messages in this thread | | | Date | Sun, 17 Jul 2011 10:52:12 +0200 | From | Thomas Sattler <> | Subject | Re: [PATCH 0/4] Fix compaction stalls due to accounting errors in isolated page accounting |
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Hi there ...
> Re-verification from testers that these patches really do fix their > problems would be appreciated. Even if hangs disappear, please confirm > that the values for nr_isolated_anon and nr_isolated_file in *both* > /proc/zoneinfo and /proc/vmstat are sensible (i.e. usually zero).
I applied these patches to 2.6.38.8 and it run for nearly a month without any problems. Even Though I did not check nr_isolated_*. As (at least) patch3 made it into 2.6.39.3 I did not apply the others any more. And it occurred again this morning:
sysload at 2, iowait at 80% on an idle (single core) system
$ grep nr_isolated /proc/zoneinfo /proc/vmstat /proc/zoneinfo: nr_isolated_anon 0 /proc/zoneinfo: nr_isolated_file 1 /proc/zoneinfo: nr_isolated_anon 0 /proc/zoneinfo: nr_isolated_file 4294967295 /proc/zoneinfo: nr_isolated_anon 0 /proc/zoneinfo: nr_isolated_file 0 /proc/vmstat:nr_isolated_anon 0 /proc/vmstat:nr_isolated_file 0
I captured several SysRq-* logs, in case they're of interest.
Thomas
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