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Message-ID: <1367039826.12779.17.camel@Wailaba2> Date: Sat, 27 Apr 2013 01:17:06 -0400 From: Olivier Langlois <olivier@...vierlanglois.net> To: KOSAKI Motohiro <kosaki.motohiro@...il.com> Cc: Frederic Weisbecker <fweisbec@...il.com>, Peter Zijlstra <peterz@...radead.org>, Ingo Molnar <mingo@...hat.com>, Thomas Gleixner <tglx@...utronix.de>, schwidefsky@...ibm.com, Steven Rostedt <rostedt@...dmis.org>, LKML <linux-kernel@...r.kernel.org> Subject: Re: [PATCH] process cputimer is moving faster than its corresponding clock > > > 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@...ini ~ $ cat /sys/devices/system/clocksource/clocksource0/current_clocksource hpet lano1106@...laba2 ~/dev/linux/src/linux-3.8/kernel $ cat /sys/devices/system/clocksource/clocksource0/current_clocksource tsc -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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