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

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

> A huge trace result file, see the attachment for more.

> # tracer: sched_switch
> #
> # TASK-PID CPU# TIMESTAMP FUNCTION
> # | | | | |
> mysqld-3799 [07] 151.411009: 3799:120:R ==> 3807:120:R
...
> sysbench-3803 [07] 151.417048: 3803:120:R + 3791:120:S

ok, this only spans 6 milliseconds, which is probably a bit too light.

Could you please increase the trace size 32-fold (via
/debug/tracing/trace_entries), and send us the (large!) trace file
compressed via bzip2 -9, off-list (or via a web link)? [anyone on-list
can have a look at the smaller trace file already]

Thanks,

Ingo


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