From: Olivier Langlois <olivier@olivierlanglois.net>
To: KOSAKI Motohiro <kosaki.motohiro@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>,
Peter Zijlstra <peterz@infradead.org>,
Ingo Molnar <mingo@redhat.com>,
Thomas Gleixner <tglx@linutronix.de>,
schwidefsky@de.ibm.com, Steven Rostedt <rostedt@goodmis.org>,
LKML <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] process cputimer is moving faster than its corresponding clock
Date: Sat, 27 Apr 2013 01:17:06 -0400 [thread overview]
Message-ID: <1367039826.12779.17.camel@Wailaba2> (raw)
In-Reply-To: <1367038943.12779.10.camel@Wailaba2>
>
>
> Also other factors to consider it is are you doing the test on a very
> loaded system? What is your platform?
>
> I have tested it positively on 32 bit, 64 bits build on Atom N450
>
> i7 first and second generation system.
>
> I did vary HZ from 300 to 1000 HZ, I tried the 3 three different
> preemption models.
>
> With all these combinations, I still have the problem.
>
Kosaki,
Also clocksource accuracy may affect the result. Here are mines:
lano1106@hpmini ~ $
cat /sys/devices/system/clocksource/clocksource0/current_clocksource
hpet
lano1106@Wailaba2 ~/dev/linux/src/linux-3.8/kernel $
cat /sys/devices/system/clocksource/clocksource0/current_clocksource
tsc
next prev parent reply other threads:[~2013-04-27 5:17 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-04-05 17:59 [PATCH] process cputimer is moving faster than its corresponding clock Olivier Langlois
2013-04-10 11:35 ` Peter Zijlstra
2013-04-10 15:48 ` Olivier Langlois
2013-04-12 9:16 ` Peter Zijlstra
2013-04-15 1:55 ` Olivier Langlois
2013-04-12 9:18 ` Peter Zijlstra
2013-04-12 10:50 ` Peter Zijlstra
2013-04-12 15:55 ` Peter Zijlstra
2013-04-15 6:11 ` Olivier Langlois
2013-04-19 13:03 ` Frederic Weisbecker
2013-04-19 17:38 ` KOSAKI Motohiro
2013-04-19 18:08 ` KOSAKI Motohiro
2013-04-26 4:40 ` Olivier Langlois
2013-04-26 6:27 ` Olivier Langlois
2013-04-26 19:08 ` KOSAKI Motohiro
2013-04-27 1:51 ` Olivier Langlois
2013-04-27 2:15 ` KOSAKI Motohiro
2013-04-27 5:02 ` Olivier Langlois
2013-04-27 5:17 ` Olivier Langlois [this message]
2013-04-27 5:31 ` Olivier Langlois
2013-04-27 5:06 ` Olivier Langlois
2013-04-27 4:40 ` [PATCH v2 1/3] " Olivier Langlois
2013-04-29 0:45 ` Frederic Weisbecker
2013-04-29 17:29 ` Olivier Langlois
2013-04-29 5:06 ` KOSAKI Motohiro
2013-04-29 17:10 ` Olivier Langlois
2013-04-29 17:41 ` Olivier Langlois
2013-04-29 17:56 ` KOSAKI Motohiro
2013-04-29 18:20 ` Olivier Langlois
2013-04-29 18:31 ` KOSAKI Motohiro
2013-04-29 18:54 ` Olivier Langlois
2013-04-29 19:09 ` KOSAKI Motohiro
2013-04-29 21:20 ` Olivier Langlois
2013-04-29 22:42 ` KOSAKI Motohiro
[not found] ` <1367036552.7911.63.camel@Wailaba2>
2013-04-27 4:40 ` [PATCH v2 2/3] " Olivier Langlois
2013-04-27 4:41 ` [PATCH v2 3/3] " Olivier Langlois
2013-04-29 6:25 ` KOSAKI Motohiro
2013-04-29 17:16 ` Olivier Langlois
2013-04-11 3:29 ` [PATCH] " Olivier Langlois
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