From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <52CC83F1.40000@xenomai.org> Date: Tue, 07 Jan 2014 23:47:13 +0100 From: Gilles Chanteperdrix MIME-Version: 1.0 References: <44lhyrmuw9.fsf@be-well.ilk.org> <52CC7D71.4040703@steinkuehler.net> In-Reply-To: <52CC7D71.4040703@steinkuehler.net> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Subject: Re: [Xenomai] Altera Cyclone V List-Id: Discussions about the Xenomai project List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Charles Steinkuehler Cc: xenomai@xenomai.org On 01/07/2014 11:19 PM, Charles Steinkuehler wrote: > The single-core A8 on the > BeagleBone is good for about 25 uS typical and 80 uS or so worst case > latency. That is really high. On a 720MHz OMAP3, with the latency test running with a 100us period, I typically get latencies close to 40us (under dohell load). Granted I do not run many functionalities of the SOC (typically, not the graphic processor), but I would not expect latencies to get so high. Is there any chance you could trigger a trace with the I-pipe tracer? -- Gilles.