From: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
To: Jeroen Van den Keybus <jeroen.vandenkeybus@gmail.com>
Cc: "xenomai@xenomai.org" <xenomai@xenomai.org>
Subject: Re: [Xenomai] Reading /proc/xenomai/stat causes high latencies
Date: Thu, 24 Apr 2014 00:25:59 +0200 [thread overview]
Message-ID: <53583DF7.3080700@xenomai.org> (raw)
In-Reply-To: <CAPRPZsA4ZQEm1a+2TV6s2wvD2_M53RrL4zLz0sJgLKEF8ALo1w@mail.gmail.com>
On 04/23/2014 11:39 PM, Jeroen Van den Keybus wrote:
>> You mean with tracer on? Then you have a trace for the high latency?
>
> No, unfortunately. Every time I enable the tracer, all is well, no latencies.
>
> Since this is so elusive, I started to install all kernels I built
> (and keep the configs along). I just found that one of them does not
> have the high latencies and does not have the I-pipe debugging on
> either. Hooray.
>
> However, when I powerdown the machine and reboot this very kernel, the
> problem reappears.
Could you put a printk in the function vfile_stat_rewind to see if it
gets called (more than once) when the problem happens?
--
Gilles.
next prev parent reply other threads:[~2014-04-23 22:25 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-04-22 16:02 [Xenomai] Reading /proc/xenomai/stat causes high latencies Jeroen Van den Keybus
2014-04-23 9:14 ` Jeroen Van den Keybus
2014-04-23 13:45 ` Jeroen Van den Keybus
2014-04-23 14:07 ` Gilles Chanteperdrix
2014-04-23 20:54 ` Jeroen Van den Keybus
2014-04-23 20:56 ` Gilles Chanteperdrix
2014-04-23 21:39 ` Jeroen Van den Keybus
2014-04-23 22:25 ` Gilles Chanteperdrix [this message]
2014-04-24 8:57 ` Jeroen Van den Keybus
2014-04-24 14:46 ` Jeroen Van den Keybus
2014-04-25 8:15 ` Jeroen Van den Keybus
2014-04-25 10:44 ` Jeroen Van den Keybus
2014-09-09 21:03 ` Gilles Chanteperdrix
2014-09-10 13:50 ` Jeroen Van den Keybus
2014-09-10 19:47 ` Gilles Chanteperdrix
2014-09-11 5:11 ` Jan Kiszka
2014-09-11 5:19 ` Jan Kiszka
2014-09-18 11:46 ` Gilles Chanteperdrix
2014-09-18 11:59 ` Jan Kiszka
2014-09-18 12:11 ` Gilles Chanteperdrix
2014-09-18 12:17 ` Gilles Chanteperdrix
2014-09-18 12:20 ` Jan Kiszka
2014-09-18 13:05 ` Gilles Chanteperdrix
2014-09-18 13:26 ` Jan Kiszka
2014-09-18 13:44 ` Gilles Chanteperdrix
2014-09-18 16:14 ` Jan Kiszka
2014-09-18 16:28 ` Gilles Chanteperdrix
2014-09-18 18:39 ` Gilles Chanteperdrix
2014-09-18 19:23 ` Jan Kiszka
2014-09-18 19:31 ` Gilles Chanteperdrix
2014-09-18 19:09 ` Jan Kiszka
2014-09-18 19:32 ` Gilles Chanteperdrix
2014-09-18 19:56 ` Jan Kiszka
2014-09-18 20:13 ` Gilles Chanteperdrix
2014-09-18 20:21 ` Gilles Chanteperdrix
2014-09-19 2:06 ` Gilles Chanteperdrix
2014-09-19 5:41 ` Jan Kiszka
2014-09-19 7:04 ` Philippe Gerum
2014-09-19 10:51 ` Gilles Chanteperdrix
2014-09-16 11:09 ` Gilles Chanteperdrix
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