From: Adam J <jacobvi123@gmail.com>
To: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
Cc: Jan Kiszka <jan.kiszka@siemens.com>, xenomai@xenomai.org
Subject: Re: [Xenomai] unmapping and remapping /dev/rtheap
Date: Wed, 04 Sep 2013 08:06:06 -0400 [thread overview]
Message-ID: <5227222E.2030000@gmail.com> (raw)
In-Reply-To: <66b86652c6224bb4db31a858f05f8ab4.squirrel@127.0.0.1>
Oops, yeah I forgot to mention that. Before running the experiments I do:
sysctl -w kernel.sched_rt_runtime_us=-1
sysctl -w kernel.sched_rt_period_us=1000000000
Adam
On 9/4/2013 8:03 AM, Gilles Chanteperdrix wrote:
> Adam J wrote:
>> I'm a researcher who's trying to use a linux system as a testbed for a
>> new program sampling methodology. What I want to be able to do is take a
>> checkpoint at a given point in a program and then run that checkpoint
>> for a set amount of instructions repeatedly with deterministic run time.
>> I am new to running programs deterministically on Linux.
>>
>> Currently I am running my experiments on a vanilla 3.10.10 linux system.
>> I have all user-space processes disabled except for the shell I'm using
>> to launch jobs. I am running my process under test with SCHED_FIFO 99
> Maybe I am stating the obvious, but have you tuned
> /proc/sys/kernel/sched_rt_sched_rt_period_us
> and
> /proc/sys/kernel/sched_rt_runtime_us
>
prev parent reply other threads:[~2013-09-04 12:06 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-09-04 10:04 [Xenomai] unmapping and remapping /dev/rtheap Adam Jacobvitz
2013-09-04 10:34 ` Jan Kiszka
2013-09-04 10:39 ` Adam Jacobvitz
2013-09-04 10:53 ` Jan Kiszka
2013-09-04 11:50 ` Adam J
2013-09-04 12:03 ` Gilles Chanteperdrix
2013-09-04 12:06 ` Adam J [this message]
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