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From: Oliver Nittka <oly@nittka.com>
To: RT <linux-rt-users@vger.kernel.org>
Cc: Staffan Tjernstrom <stjernstrom@eagleseven.com>,
	tstone@krieglstein.org, tglx@linutronix.de
Subject: Re: Beginner's questions on userspace latency
Date: Sun, 24 Mar 2013 21:09:47 +0100	[thread overview]
Message-ID: <514F5D8B.7070706@nittka.com> (raw)
In-Reply-To: <514CB285.4050100@nittka.com>

Thank you all very much for your insights!

I was experimenting some more on the weekend, and before I could
investigate everything I learned from you, CPU isolation did the trick
for me (using cset just like shown in the wiki).

I originally thought sched_setaffinity() would suffice, but giving the
application its own CPU helped a lot. Didn't get anything over 1.735 ms
for two days now.

FYI: this is running on a Kontron pITX-SP
http://de.kontron.com/products/boards+and+mezzanines/embedded+sbc/pitx+25+sbc/pitxsp.html.

Thanks again!

  -- o


      parent reply	other threads:[~2013-03-24 20:10 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-03-22 19:35 Beginner's questions on userspace latency Oliver Nittka
2013-03-22 20:06 ` Staffan Tjernstrom
2013-03-22 20:21 ` Tim Sander
2013-03-22 20:23 ` Thomas Gleixner
2013-03-24 20:09 ` Oliver Nittka [this message]

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