From: Peter Zijlstra <peterz@infradead.org>
To: Milton Miller <miltonm@bga.com>
Cc: Yong Zhang <yong.zhang0@gmail.com>,
Borislav Petkov <bp@amd64.org>, Borislav Petkov <bp@alien8.de>,
"mingo@redhat.com" <mingo@redhat.com>,
"hpa@zytor.com" <hpa@zytor.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"markus@trippelsdorf.de" <markus@trippelsdorf.de>,
"tglx@linutronix.de" <tglx@linutronix.de>,
"mingo@elte.hu" <mingo@elte.hu>,
"linux-tip-commits@vger.kernel.org"
<linux-tip-commits@vger.kernel.org>
Subject: Re: [tip:sched/urgent] sched: Fix cross-cpu clock sync on remote wakeups
Date: Fri, 03 Jun 2011 12:58:33 +0200 [thread overview]
Message-ID: <1307098713.2353.3099.camel@twins> (raw)
In-Reply-To: <1307098506.2353.3094.camel@twins>
On Fri, 2011-06-03 at 12:55 +0200, Peter Zijlstra wrote:
> On Fri, 2011-06-03 at 12:36 +0200, Peter Zijlstra wrote:
> > > Can we get some numbers for how often the two cases occur on some
> > > various workloads?
> >
> > Sure, let me stick some counters in.
>
> Of 128765 IPIs, 17483 were with an empty list (boot + make -j64).
>
> I didn't yet look at where those empty ones originated from.
After two more make clean; make -j64 cycles thats:
250082:24793
So on this load its 10+:1.
prev parent reply other threads:[~2011-06-03 10:58 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-05-30 17:39 Very high CPU values in top on idle system (3.0-rc1) Markus Trippelsdorf
2011-05-30 18:05 ` Peter Zijlstra
2011-05-30 18:23 ` Markus Trippelsdorf
2011-05-30 20:45 ` Markus Trippelsdorf
2011-05-30 22:12 ` Peter Zijlstra
2011-05-31 9:55 ` Peter Zijlstra
2011-05-31 10:04 ` Markus Trippelsdorf
2011-05-31 12:31 ` [tip:sched/urgent] sched: Fix cross-cpu clock sync on remote wakeups tip-bot for Peter Zijlstra
2011-05-31 12:56 ` Borislav Petkov
2011-05-31 13:11 ` Peter Zijlstra
2011-06-01 7:05 ` Borislav Petkov
2011-06-01 10:36 ` Peter Zijlstra
2011-06-01 15:50 ` Borislav Petkov
2011-06-02 7:52 ` Yong Zhang
2011-06-02 13:04 ` Peter Zijlstra
2011-06-02 14:23 ` Yong Zhang
2011-06-02 15:48 ` Peter Zijlstra
2011-06-03 6:49 ` Yong Zhang
2011-06-07 13:12 ` Borislav Petkov
2011-06-07 13:16 ` Peter Zijlstra
2011-06-03 9:57 ` Milton Miller
2011-06-03 10:36 ` Peter Zijlstra
2011-06-03 10:55 ` Peter Zijlstra
2011-06-03 10:58 ` Peter Zijlstra [this message]
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