[xfs-masters] [Bug 16348] kswapd continuously active when doing IO

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=16348


Dave Chinner <david at fromorbit.com> changed:

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                 CC|                            |david at fromorbit.com




--- Comment #8 from Dave Chinner <david at fromorbit.com>  2010-07-12 22:50:26 ---
(In reply to comment #7)
> Here's the same situation on a 128 GB / 32 core server. It is doing some heavy
> I/O and very very unresponsive. This one is running 2.6.34-rc6:

These look like the new xfs inode cache shrinker is active. The dd is
generating memory pressure, and kswapd potentially running the slab shrinkers
reclaiming cached inodes. Can you show the output of slabtop before the dd and
while it is running?

Cheers,

Dave.

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