From mboxrd@z Thu Jan 1 00:00:00 1970 From: Philippe Gerum In-Reply-To: <3FF315C710820E47A04E55C6F7D9B0AD78FAF5@domain.hid> References: <3FF315C710820E47A04E55C6F7D9B0AD78FAF5@domain.hid> Content-Type: text/plain; charset="UTF-8" Date: Wed, 01 Jun 2011 14:09:08 +0200 Message-ID: <1306930148.2118.45.camel@domain.hid> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Subject: Re: [Xenomai-help] Xenomai latency measurements List-Id: Help regarding installation and common use of Xenomai List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: roderik.wildenburg@domain.hid Cc: xenomai@xenomai.org On Wed, 2011-06-01 at 13:14 +0200, roderik.wildenburg@domain.hid wrote: > I performed some measurements with the Xenomai latency test. > In case somebody is interested I attached the results for our PPC-System > (5200B 400MHZ). > In this document I also compared latencies of kernel 2.4 with kernel > 2.6. > Any comments are welcome, especially whether the values I measured are > reasonable for a 400MHZ PPC. > Yes, they look like ok but the CPU frequency is not what makes the difference, the performance of the memory subsystem does - particularly since ppc MMU management is software-assisted. We would have more significant information by comparing Xenomai 2.5.6 over Linux 2.4.25. > Roderik > > -------------------------------------------------------- > manroland AG > Vorsitzender des Aufsichtsrates: Hanno C. Fiedler > Vorstand: Gerd Finkbeiner (Vorsitzender), Dr. Ingo Koch, Dr. Markus Rall, Paul Steidle > Sitz der Gesellschaft: Offenbach am Main, Registergericht: Amtsgericht Offenbach HRB-Nr. 42592 > USt-Ident-Nr. DE 250200933 > _______________________________________________ > Xenomai-help mailing list > Xenomai-help@domain.hid > https://mail.gna.org/listinfo/xenomai-help -- Philippe.