From: Thomas Gleixner <tglx@linutronix.de>
To: Mike Galbraith <bitbucket@online.de>
Cc: Len Brown <lenb@kernel.org>,
Peter Zijlstra <peterz@infradead.org>,
Linux PM list <linux-pm@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Jeremy Eder <jeder@redhat.com>,
x86@kernel.org
Subject: Re: 50 Watt idle power regression bisected to Linux-3.10
Date: Tue, 10 Dec 2013 15:29:08 +0100 (CET) [thread overview]
Message-ID: <alpine.DEB.2.02.1312101458040.28330@ionos.tec.linutronix.de> (raw)
In-Reply-To: <1386652637.5374.72.camel@marge.simpson.net>
On Tue, 10 Dec 2013, Mike Galbraith wrote:
> vogelweide:~/:[130]# turbostat -P -i 60
> pk cor CPU %c0 GHz TSC SMI %c1 %c3 %c6 CTMP %pc3 %pc6
> 0.02 2.12 2.26 0 43.40 56.57 0.00 53 33.81 0.00
> 0 0 0 0.23 2.10 2.26 5 65.47 34.30 0.00 52 10.69 0.00
...
> That, vs solid >99% pc3 for old 3.0 enterprise kernel. What happened,
> dunno, kernel called itself master. Whatever, I don't like test bogons,
> and this is one, so I thought I should let you know. DL980 refuses to
> come close to the previous result.
Hmm, that's very similar to the issue Len is seing on his quad socket WM.
But I can't see it on my dual socket SNB, neither does PeterZ on his
dual socket WM machine. Heisenbugs ....
Can you offline all cpus except core 0, enable all trace events (nop
tracer), run "sleep 100" and stop and grab the trace? Please make sure
that your tracebuffer is big enough to cover the full thing.
Thanks,
tglx
next prev parent reply other threads:[~2013-12-10 14:29 UTC|newest]
Thread overview: 96+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-12-07 8:00 50 Watt idle power regression bisected to Linux-3.10 Len Brown
2013-12-07 8:39 ` Mike Galbraith
2013-12-07 16:01 ` Len Brown
2013-12-07 16:45 ` Len Brown
2013-12-07 19:17 ` Mike Galbraith
2013-12-10 11:41 ` Ingo Molnar
2013-12-07 12:54 ` Thomas Gleixner
2013-12-08 4:57 ` Mike Galbraith
2013-12-08 20:40 ` Len Brown
2013-12-09 3:16 ` Mike Galbraith
2013-12-10 5:17 ` Mike Galbraith
2013-12-10 11:45 ` Ingo Molnar
2013-12-10 14:29 ` Thomas Gleixner [this message]
2013-12-10 15:06 ` Ingo Molnar
2013-12-11 2:05 ` Thomas Gleixner
2013-12-11 3:21 ` Mike Galbraith
2013-12-11 11:28 ` Thomas Gleixner
2013-12-11 11:38 ` Borislav Petkov
2013-12-11 11:52 ` Peter Zijlstra
2013-12-11 12:29 ` Mike Galbraith
2013-12-11 12:43 ` Peter Zijlstra
2013-12-11 13:10 ` Mike Galbraith
2013-12-11 13:40 ` Borislav Petkov
2013-12-11 14:56 ` Ingo Molnar
2013-12-11 16:02 ` Borislav Petkov
2013-12-11 16:43 ` Peter Zijlstra
2013-12-11 17:50 ` Ingo Molnar
2013-12-11 23:08 ` H. Peter Anvin
2013-12-11 23:14 ` Borislav Petkov
2013-12-12 0:52 ` H. Peter Anvin
2013-12-12 4:25 ` Mike Galbraith
2013-12-12 4:49 ` H. Peter Anvin
2013-12-12 4:59 ` Mike Galbraith
2013-12-12 5:37 ` Mike Galbraith
2013-12-12 5:45 ` H. Peter Anvin
2013-12-12 5:57 ` Mike Galbraith
2013-12-12 6:05 ` Mike Galbraith
2013-12-12 7:57 ` H. Peter Anvin
2013-12-12 8:51 ` Peter Zijlstra
2013-12-12 13:28 ` Ingo Molnar
2013-12-12 15:06 ` H. Peter Anvin
2013-12-12 15:51 ` Peter Zijlstra
2013-12-11 14:42 ` Ingo Molnar
2013-12-11 15:02 ` Thomas Gleixner
2013-12-11 15:09 ` Ingo Molnar
2013-12-11 16:44 ` Peter Zijlstra
2013-12-11 17:48 ` Ingo Molnar
2013-12-11 16:44 ` Peter Zijlstra
2013-12-11 17:47 ` Ingo Molnar
2013-12-11 21:43 ` Len Brown
2013-12-11 22:22 ` Thomas Gleixner
2013-12-18 21:44 ` [PATCH] x86 idle: repair large-server 50-watt idle-power regression Len Brown
2013-12-18 21:44 ` Len Brown
2013-12-19 12:22 ` Ingo Molnar
2013-12-19 14:40 ` H. Peter Anvin
2013-12-19 15:45 ` Borislav Petkov
2013-12-19 15:55 ` H. Peter Anvin
2013-12-19 16:02 ` Ingo Molnar
2013-12-19 16:09 ` H. Peter Anvin
2013-12-19 16:13 ` H. Peter Anvin
2013-12-19 16:21 ` Peter Zijlstra
2013-12-19 16:50 ` H. Peter Anvin
2013-12-19 17:07 ` Ingo Molnar
2013-12-19 17:25 ` Peter Zijlstra
2013-12-19 17:36 ` Peter Zijlstra
2013-12-19 18:05 ` H. Peter Anvin
2013-12-19 18:14 ` Ingo Molnar
2013-12-19 17:50 ` Peter Zijlstra
2013-12-19 18:18 ` Ingo Molnar
2013-12-19 21:05 ` H. Peter Anvin
2013-12-19 21:17 ` Ingo Molnar
2013-12-19 18:10 ` Ingo Molnar
2013-12-19 18:09 ` H. Peter Anvin
2013-12-19 18:19 ` H. Peter Anvin
2013-12-19 18:23 ` Ingo Molnar
[not found] ` <CA+55aFzGxcML7j8CEvQPYzh0W81uVoAAVmGctMOUZ7CZ1yYd2A@mail.gmail.com>
2013-12-19 18:43 ` Ingo Molnar
2013-12-19 18:43 ` Ingo Molnar
2013-12-19 20:09 ` [tip:x86/idle] x86, idle: Use static_cpu_has() for CLFLUSH workaround, add barriers tip-bot for H. Peter Anvin
2013-12-19 20:40 ` Ingo Molnar
2013-12-19 20:46 ` Linus Torvalds
2013-12-19 21:14 ` Ingo Molnar
2013-12-19 21:25 ` Linus Torvalds
2013-12-19 21:55 ` Peter Zijlstra
2013-12-20 8:47 ` Ingo Molnar
2013-12-19 20:33 ` [tip:x86/idle] x86, idle: Add memory barriers around clflush in mwait_play_dead() tip-bot for H. Peter Anvin
2013-12-19 18:19 ` [PATCH] x86 idle: repair large-server 50-watt idle-power regression Ingo Molnar
2013-12-19 19:22 ` H. Peter Anvin
2013-12-19 19:27 ` Peter Zijlstra
2013-12-19 19:51 ` [tip:x86/urgent] x86 idle: Repair " tip-bot for Len Brown
2014-03-18 0:20 ` Davidlohr Bueso
2014-03-18 9:16 ` Peter Zijlstra
2014-03-19 2:14 ` Jason Low
2014-03-19 6:42 ` Peter Zijlstra
2014-04-08 21:43 ` Brown, Len
2014-04-09 8:18 ` Peter Zijlstra
2014-04-15 3:27 ` Davidlohr Bueso
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