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From: "Cédric Schaffter" <cedric.schaffter@domain.hid>
To: "xenomai@xenomai.org" <xenomai@xenomai.org>
Subject: [Xenomai-help] SMP issues
Date: Tue, 25 Nov 2008 15:49:47 +0100	[thread overview]
Message-ID: <492C108B.1090909@domain.hid> (raw)

Hi List!

I'm trying to compare Xenomai performances with and without SMP on my 
Intel Core 2 duo.
So I built the linux kernel 2.6.25.11 (as described here : 
http://xenomai.org/index.php/Xenomai_quick_build_quide),
and I disabled the SMP support.

When I used dmesg and as I wanted, only one processor was activated... I 
performed some tests, increasing tasks
number and also their complexity...

And then, I rebuilt the kernel and specified SMP support and the dmesg 
command informed me that I have two
processors working. I launched the same applications that I used to test 
one core.

But the problem is that I get same results in both case... I thought 
tasks were automatically dispatched between
cores or cpu. Did I forget something?

Best regards,
Cédric









             reply	other threads:[~2008-11-25 14:49 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-11-25 14:49 Cédric Schaffter [this message]
2008-11-25 14:52 ` [Xenomai-help] SMP issues Gilles Chanteperdrix
     [not found]   ` <492C1206.2030009@domain.hid>
2008-11-25 14:59     ` Cédric Schaffter
2008-12-18 11:15       ` [Xenomai-help] Window Resize issue stefano.franzoni
2008-12-18 11:58         ` Gilles Chanteperdrix

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