Messages in this thread | | | Date | Tue, 30 Jan 2007 18:48:33 +0100 (CET) | From | Tim Schmielau <> | Subject | Re: Bug: 2.6.15 Process accounting fails to account for small time slice loads (still) |
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On Tue, 30 Jan 2007, Tom Burns wrote:
> The bug described back in 2004 in the following message still seems to exist: > > http://linux.derkeiler.com/Mailing-Lists/Kernel/2004-05/4313.html > > Essentially, it appears that if a process sleeps before it uses up a > complete jiffy then no charge is made to its process accounting table.
That's not a bug, it's a feature. ;-)
More seriously, it's a design decision. The benefit of exactly correct micro bookkeeping does not seem to warrant the extra cost in terms of cpu cycles spent in the accounting code.
IIRC there was a patch for that some years ago, if you are interested I will try to find it. No idea how much work it would be to port it to current kernels, though.
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