Re: oltp ~10% regression with 2.6.27-rc5 on stoakley machine

[Ingo Molnar]

* Lin Ming <ming.m.lin@xxxxxxxxx> wrote:

> I observed schedstats of sysbench, there's more
> "nr_failed_migrations_hot"
> 
> 2.6.27-rc4: se.nr_failed_migrations_hot 11
> 2.6.27-rc5: se.nr_failed_migrations_hot 95
> 
> task migration failed because of task_hot, the system is un-balanced?

would be nice to get a representative (==steady state) scheduler trace 
from the critical portions of that workload. See:

 http://people.redhat.com/mingo/sched-devel.git/readme-tracer.txt

	Ingo
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