From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
To: Mike Galbraith <bitbucket@online.de>
Cc: linux-rt-users@vger.kernel.org,
Steven Rostedt <rostedt@goodmis.org>,
linux-kernel@vger.kernel.org,
Thomas Gleixner <tglx@linutronix.de>,
"Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
Subject: Re: [PATCH] rcu: Eliminate softirq processing from rcutree
Date: Fri, 24 Jan 2014 20:46:42 +0100 [thread overview]
Message-ID: <20140124194642.GA29981@linutronix.de> (raw)
In-Reply-To: <1387775559.5369.20.camel@marge.simpson.net>
* Mike Galbraith | 2013-12-23 06:12:39 [+0100]:
>P.S.
>
>virgin -rt7 doing tbench 64 + make -j64
>
>[ 97.907960] perf samples too long (3138 > 2500), lowering kernel.perf_event_max_sample_rate to 50000
>[ 103.047921] perf samples too long (5544 > 5000), lowering kernel.perf_event_max_sample_rate to 25000
>[ 181.561271] perf samples too long (10318 > 10000), lowering kernel.perf_event_max_sample_rate to 13000
>[ 184.243750] INFO: NMI handler (perf_event_nmi_handler) took too long to run: 1.084 msecs
>[ 248.914422] perf samples too long (19719 > 19230), lowering kernel.perf_event_max_sample_rate to 7000
>[ 382.116674] NOHZ: local_softirq_pending 10
This is block
>[ 405.201593] perf samples too long (36824 > 35714), lowering kernel.perf_event_max_sample_rate to 4000
>[ 444.704185] NOHZ: local_softirq_pending 08
>[ 444.704208] NOHZ: local_softirq_pending 08
>[ 444.704579] NOHZ: local_softirq_pending 08
>[ 444.704678] NOHZ: local_softirq_pending 08
>[ 444.705100] NOHZ: local_softirq_pending 08
>[ 444.705980] NOHZ: local_softirq_pending 08
>[ 444.705994] NOHZ: local_softirq_pending 08
>[ 444.708315] NOHZ: local_softirq_pending 08
>[ 444.710348] NOHZ: local_softirq_pending 08
and this is RX. Is your testcase heavy disk-io or heavy disk-io +
network?
Sebastian
next prev parent reply other threads:[~2014-01-24 19:46 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-12-21 19:39 [PATCH] rcu: Eliminate softirq processing from rcutree Sebastian Andrzej Siewior
2013-12-22 3:07 ` Mike Galbraith
2013-12-22 8:57 ` Mike Galbraith
2013-12-23 4:38 ` Mike Galbraith
2013-12-23 5:12 ` Mike Galbraith
2014-01-24 19:46 ` Sebastian Andrzej Siewior [this message]
2014-01-25 5:20 ` Mike Galbraith
2013-12-24 19:36 ` Paul E. McKenney
2013-12-25 3:07 ` Mike Galbraith
2013-12-25 7:55 ` Paul E. McKenney
2013-12-25 17:37 ` Mike Galbraith
2014-01-17 17:14 ` Sebastian Andrzej Siewior
2014-01-18 3:25 ` Mike Galbraith
2014-01-24 19:50 ` Sebastian Andrzej Siewior
2014-01-25 5:12 ` Mike Galbraith
2014-01-27 5:10 ` Mike Galbraith
2014-01-27 16:54 ` Paul E. McKenney
2014-01-27 17:03 ` Mike Galbraith
2013-12-26 10:03 ` Mike Galbraith
2014-01-17 17:23 ` Sebastian Andrzej Siewior
2014-01-18 3:30 ` Mike Galbraith
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