From: Jan Kiszka <jan.kiszka@domain.hid>
To: Frits de Klark <mailing.xenomai@domain.hid>
Cc: xenomai@xenomai.org
Subject: Re: [Xenomai-help] Testsuite latency
Date: Fri, 20 Oct 2006 14:19:20 +0200 [thread overview]
Message-ID: <4538BEC8.7080304@domain.hid> (raw)
In-Reply-To: <54b161f50610200324q625b79bcg45e1c3d0b2b19b77@domain.hid>
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Frits de Klark wrote:
> Hello everyone,
>
> as sort of a newbie to Xenomai (and realtime Linux in general) I'm the
> moment running the (unmodified) latency test included in the testsuite in
> different situations:
>
> Situation A: Running as little daemons as possible in the background. The
> chart I produced from the testdata, after running it for about 15 minutes,
> without doing anything else on the machine, shows very stable results, that
> is: there a no visible peaks downwards. Iin the case of MAX for example,
> the
> value is most of the time between 2.7 and 2.9, occasionly going straight up
> in the air, but NEVER below 2.7.
> WORST is 5.33, BEST is 0.40.
>
> Situation B: Running 1 'unneccesary' daemon, mysqld, but performing no
> database operations whatsoever. The chart I produced from this testdata (it
> also ran for 15 minutes) is completely different and the line representing
> MAX is going up and down all the time, it looks VERY unsteady.
> In this case WORST is 16.52 and BEST is 1.11.
Check xenomai/TROUBLESHOOTING for appropriate load to test for the worst
case.
Jan
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prev parent reply other threads:[~2006-10-20 12:19 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-10-20 10:24 [Xenomai-help] Testsuite latency Frits de Klark
2006-10-20 12:05 ` Wolfgang Grandegger
2006-10-20 12:19 ` Jan Kiszka [this message]
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