From: Lin Ming <ming.m.lin@intel.com>
To: Ingo Molnar <mingo@elte.hu>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>,
linux-kernel <linux-kernel@vger.kernel.org>,
"Zhang, Yanmin" <yanmin_zhang@linux.intel.com>
Subject: Re: oltp ~10% regression with 2.6.27-rc5 on stoakley machine
Date: Thu, 04 Sep 2008 20:19:48 +0800 [thread overview]
Message-ID: <1220530788.12161.31.camel@minggr> (raw)
In-Reply-To: <20080904113529.GA25533@elte.hu>
On Thu, 2008-09-04 at 13:35 +0200, Ingo Molnar wrote:
> * 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]
The large trace file also available at below link,
http://myfreefilehosting.com/f/94991018dc_1.31MB
>
> Thanks,
>
> Ingo
next prev parent reply other threads:[~2008-09-04 12:19 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-09-04 8:51 oltp ~10% regression with 2.6.27-rc5 on stoakley machine Lin Ming
2008-09-04 9:03 ` Peter Zijlstra
2008-09-04 10:52 ` Lin Ming
2008-09-04 11:06 ` Peter Zijlstra
2008-09-04 12:12 ` Lin Ming
2008-09-04 12:26 ` Peter Zijlstra
2008-09-04 12:42 ` Lin Ming
2008-09-04 13:50 ` Gregory Haskins
2008-09-04 13:50 ` [PATCH 1/4] revert "sched: sched_cacheflush is now unused" Gregory Haskins
2008-09-04 13:50 ` [PATCH 2/4] Revert "[PATCH] sched: remove cache_hot_time" Gregory Haskins
2008-09-04 13:50 ` [PATCH 3/4] Revert "sched: zap the migration init / cache-hot balancing code" Gregory Haskins
2008-09-04 13:50 ` [PATCH 4/4] sched: make task_hot() once again use sd->cache_hot_time Gregory Haskins
2008-09-04 11:09 ` oltp ~10% regression with 2.6.27-rc5 on stoakley machine Ingo Molnar
2008-09-04 11:30 ` Lin Ming
2008-09-04 11:35 ` Ingo Molnar
2008-09-04 12:19 ` Lin Ming [this message]
2008-09-05 1:26 ` Lin Ming
2008-09-20 21:38 ` Peter Zijlstra
2008-09-26 2:00 ` Lin Ming
-- strict thread matches above, loose matches on Subject: below --
2008-09-04 7:06 Lin Ming
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