From: Thomas Gleixner <tglx@linutronix.de>
To: Karsten Wiese <fzu@wemgehoertderstaat.de>
Cc: Andrew Morton <akpm@osdl.org>, Ingo Molnar <mingo@elte.hu>,
linux-kernel@vger.kernel.org
Subject: Re: 2.6.20-rc6-mm2
Date: Mon, 29 Jan 2007 17:38:08 +0100 [thread overview]
Message-ID: <1170088688.29240.5.camel@localhost.localdomain> (raw)
In-Reply-To: <200701291722.41705.fzu@wemgehoertderstaat.de>
On Mon, 2007-01-29 at 17:22 +0100, Karsten Wiese wrote:
> Hi,
>
> with dynticks and highres_timers enabled, cpufreq_ondemand makes mess here on
> an AMD64 UP.
> cpufreq_ondemand assumes that jiffies advance at exactly the same pace as the
> sum of all kstat_cpu(cpu).cpustat.* members.
> This isn't the case here as dmesg output from patch below shows.
>
> Is cpufreq_ondemand correct assuming
> "jiffies advance at exactly the same pace as the
> sum of all kstat_cpu(cpu).cpustat.* members"?
> Or is "dynticks and highres_timers"'s behaviour of incrementing the
> sum of kstat_cpu(cpu).cpustat.* members faster than jiffies?
No it should not. /me investigates.
tglx
next prev parent reply other threads:[~2007-01-29 16:37 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-01-29 8:12 2.6.20-rc6-mm2 Andrew Morton
2007-01-29 11:02 ` 2.6.20-rc6-mm2 Jiri Kosina
2007-01-29 15:40 ` 2.6.20-rc6-mm2 Thomas Gleixner
2007-01-29 16:28 ` 2.6.20-rc6-mm2 Jiri Kosina
2007-01-30 10:27 ` 2.6.20-rc6-mm2 Maciej Rutecki
2007-01-29 11:21 ` [-mm patch] BUG at net/sunrpc/svc.c:128 (was Re: 2.6.20-rc6-mm2) Frederik Deweerdt
2007-01-29 17:32 ` Andrew Morton
2007-01-29 17:49 ` Christoph Lameter
2007-01-30 14:17 ` Frederik Deweerdt
2007-01-29 16:22 ` 2.6.20-rc6-mm2 Karsten Wiese
2007-01-29 16:38 ` Thomas Gleixner [this message]
2007-01-29 17:28 ` 2.6.20-rc6-mm2 - modules_install error Matthew Frost
2007-01-29 21:37 ` 2.6.20-rc6-mm2 Laurent Riffard
2007-01-29 21:59 ` [PATCH] compile and link utsname_sysctl.o Laurent Riffard
2007-01-30 15:11 ` Eric W. Biederman
2007-01-30 16:26 ` Laurent Riffard
2007-02-06 22:13 ` [-mm patch] make kernel/time/timer_stats.c:nr_entries static Adrian Bunk
2007-02-06 22:15 ` Ingo Molnar
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