Re: cgroup task groups appears sensitive to absolute magnitude ofshares

From: Chris Friesen
Date: Fri Oct 10 2008 - 11:06:39 EST


Peter Zijlstra wrote:
On Fri, 2008-10-10 at 08:03 +0200, Peter Zijlstra wrote:
On Thu, 2008-10-09 at 17:00 -0600, Chris Friesen wrote:

Going to 4000/2000/1000/200 doesn't seem to give noticeable improvements, and going to 40000/20000/10000/2000 causes the test to behave unpredictably, either taking abnormally long to complete or else not completing at all.

Hmm, I would have expected it to work for at least the normal nice range
of weight values..

Will have to look into that I suppose..

One thought, are you running 32 or 64 bit? If you're on 32, could you
try 64? If that fixes it its probably an easy fix, otherwise I fear it
might take a bit more..

No such luck, this is 64-bit (powerpc though, not x86). I tried reproducing it again today and was unable to reproduce the hang, but saw delays of up to 7 seconds (where the expected delay is 10 sec).

Chris
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