Dave Chinner wrote:
On Thu, Apr 08, 2010 at 09:43:41AM +1000, Dave Chinner wrote:
And there's a patch attached that stops direct reclaim from writing
back dirty pages - it seems to work fine from some rough testing
I've done. Perhaps you might want to give it a spin on a
test box, John?
Thanks very much for this. The patch is in and soaking on a THREAD_ORDER
1 kernel (2.6.33.2 + patch + stack instrumentation), so far so good, but
it's early days. After about 2hrs of uptime:
$ dmesg | grep stack | tail -1
[ 60.350766] apache2 used greatest stack depth: 2544 bytes left
(which tallies well with your 5 1/2Kbytes usage figure).
I'll reply again after it's been running long enough to draw conclusions.
jb
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