From mboxrd@z Thu Jan 1 00:00:00 1970 From: mkl@pengutronix.de (Marc Kleine-Budde) Date: Mon, 05 Jul 2010 14:45:34 +0200 Subject: Some benchmarks on ARM In-Reply-To: <4C31D30A.9010601@pengutronix.de> References: <20100702180257.GA8767@pengutronix.de> <4C31D30A.9010601@pengutronix.de> Message-ID: <4C31D3EE.7050407@pengutronix.de> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Marc Kleine-Budde wrote: > Colin Tuckley wrote: >>> -----Original Message----- >>> kernel-bounces at lists.infradead.org] On Behalf Of Robert Schwebel >>> Sent: 02 July 2010 19:03 >>> We have recently made some benchmarks, in order to get a little bit >>> better fealing about where ARM cpus are today, especially when it comes >>> to the "recent" ones, and in comparism to the Atom. So we collected a >>> few benchmarks (most from lmbench) and did some actual measurements. >> You have the family wrong for (at least) the Cortex-A8, it's a v7. This probably accounts for some of it's slow relative performance since you probably used incorrect compiler switches. >> >>> All measurements have been done on 2.6.34. >> How were the kernels compiled? Was thumb mode used for the ones that support it? >> >> You didn't mention the cache state anywhere - it can make a big difference. > > After booting all tests are done via ssh, the system was "idle" otherwise. > > We're just repeating the tests with "echo 1 > /proc/sys/vm/drop_caches" > prior to each test. We'll use "sync; echo 3 > /proc/sys/vm/drop_caches" Marc -- Pengutronix e.K. | Marc Kleine-Budde | Industrial Linux Solutions | Phone: +49-231-2826-924 | Vertretung West/Dortmund | Fax: +49-5121-206917-5555 | Amtsgericht Hildesheim, HRA 2686 | http://www.pengutronix.de | -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 260 bytes Desc: OpenPGP digital signature URL: