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    SubjectRe: 2.6.39-rc4+: oom-killer busy killing tasks
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    On Wed, Apr 27, 2011 at 7:28 PM, Dave Chinner <david@fromorbit.com> wrote:
    > On Wed, Apr 27, 2011 at 12:46:51AM -0700, Christian Kujau wrote:
    >> On Wed, 27 Apr 2011 at 12:26, Dave Chinner wrote:
    >> > What this shows is that VFS inode cache memory usage increases until
    >> > about the 550 sample mark before the VM starts to reclaim it with
    >> > extreme prejudice. At that point, I'd expect the XFS inode cache to
    >> > then shrink, and it doesn't. I've got no idea why the either the
    >>
    >> Do you remember any XFS changes past 2.6.38 that could be related to
    >> something like this?
    >
    > There's plenty of changes that coul dbe the cause - we've changed
    > the inode reclaim to run in the background out of a workqueue as
    > well as via the shrinker, so it could even be workqueue starvation
    > causing the the problem...

    RCU free starvation is another possibility?
    https://lkml.org/lkml/2011/4/25/124

    --
    Kind regards,
    Minchan Kim


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