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From: Antoine Durand <wanipof@gmail.com>
To: Lennart Sorensen <lsorense@csclub.uwaterloo.ca>
Cc: Jan Kiszka <jan.kiszka@siemens.com>, xenomai@xenomai.org
Subject: Re: [Xenomai] I-Pipe Tracer and linux ftrace
Date: Tue, 23 Jun 2015 18:18:05 +0200	[thread overview]
Message-ID: <CAOL1OyOdg9S=G412PAsiJCkaSii9Pgu17a_0=gOHaOyr=fHaDQ@mail.gmail.com> (raw)
In-Reply-To: <20150623160736.GL17436@csclub.uwaterloo.ca>

booting with 'maxcpus=2' in my case has the same behavior than
CONFIG_NR_CPUS=2
the clocksource switche to refined-jiffies and system time is wrong (very
very slow)

I only get
refined-jiffies jiffies and tsc
in /sys/devices/system/clocksource/clocksource0/available_clocksource

the 8254 isn't seen.


2015-06-23 18:07 GMT+02:00 Lennart Sorensen <lsorense@csclub.uwaterloo.ca>:

> On Tue, Jun 23, 2015 at 04:41:06PM +0200, Antoine Durand wrote:
> > The clocksource switching is due to the config option
> >
> > CONFIG_NR_CPUS=2
> >
> > the CPU is quad core and i would like to use only two of them to emulate
> a
> > cheaper board.
> >
> > now the time run normally
> >
> > i will check if the other problems are resolved.
>
> Wouldn't booting with 'maxcpus=2' be good enough for that test and avoid
> any breaking of the system?
>
> --
> Len Sorensen
>

  reply	other threads:[~2015-06-23 16:18 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-06-22 16:06 [Xenomai] I-Pipe Tracer and linux ftrace Antoine Durand
2015-06-22 17:20 ` Jan Kiszka
2015-06-22 20:47   ` Antoine Durand
2015-06-23  6:19     ` Jan Kiszka
2015-06-23 10:09       ` Antoine Durand
2015-06-23 14:11         ` Lennart Sorensen
2015-06-23 14:15           ` Jan Kiszka
2015-06-23 14:27             ` Gilles Chanteperdrix
2015-06-23 14:41               ` Antoine Durand
2015-06-23 14:43                 ` Jan Kiszka
2015-06-23 14:46                 ` Gilles Chanteperdrix
2015-06-23 14:47                   ` Antoine Durand
2015-06-23 14:49                     ` Gilles Chanteperdrix
2015-06-23 14:59                       ` Jan Kiszka
2015-06-23 15:01                       ` Antoine Durand
2015-06-23 16:07                 ` Lennart Sorensen
2015-06-23 16:18                   ` Antoine Durand [this message]
2015-06-23 17:00                     ` Jan Kiszka
2015-06-23 17:23                       ` Jan Kiszka
2015-06-24  7:30                         ` Antoine Durand
     [not found]             ` <CAOL1OyNELX_6g8fOSS8wuJ+6-TzrBXjoxn3wH-Gb8u-HKHFqSw@mail.gmail.com>
2015-06-23 14:42               ` Jan Kiszka

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