RE: bug in sched.c:task_hot()

[Chen, Kenneth W]

Nick Piggin wrote on Monday, October 04, 2004 8:18 PM
> >This bug causes large amount of incorrect process migration across
> >cpus (at stunning 10,000 per second) and we lost cache affinity very
> >quickly and almost took double digit performance regression on a db
> >transaction processing workload.  Patch to fix the bug.  Diff'ed against
> >2.6.9-rc3.
> >
>
> This one looks OK (the other may need a bit of rethinking).
> What kernel is the regression in relation to, out of interest?

Performance regression was initially seen on 2.6.8 relative to 2.6.6.
We subsequently narrowed down to these set of bugs.

- Ken


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