Mel Gorman [off-list ref] wrote:

On Wed, Jan 02, 2013 at 08:08:48PM +0000, Eric Wong wrote:

quoted

Instead, I disabled THP+compaction under v3.7.1 and I've been unable to
reproduce the issue without THP+compaction.

Implying that it's stuck in compaction somewhere. It could be the case
that compaction alters timing enough to trigger another bug. You say it
tests differently depending on whether TCP or unix sockets are used
which might indicate multiple problems. However, lets try and see if
compaction is the primary problem or not.

I haven't managed to reproduce the issue on Unix sockets, yet, just TCP.
Trying Unix with 90KB as Eric Dumazet suggested.

I'll get the info you need from /proc soon.
Thank you for looking at this!

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