Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1763629AbYBAMBT (ORCPT ); Fri, 1 Feb 2008 07:01:19 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1758231AbYBAMBH (ORCPT ); Fri, 1 Feb 2008 07:01:07 -0500 Received: from mail-relay-01.mailcluster.net ([77.221.130.213]:47984 "EHLO mail-relay-01.mailcluster.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755569AbYBAMBF (ORCPT ); Fri, 1 Feb 2008 07:01:05 -0500 Message-ID: <47A30790.8080402@vlnb.net> Date: Fri, 01 Feb 2008 14:50:40 +0300 From: Vladislav Bolkhovitin User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.13) Gecko/20060501 Fedora/1.7.13-1.1.fc5 X-Accept-Language: en-us, ru, en MIME-Version: 1.0 To: Bart Van Assche CC: landman@scalableinformatics.com, fujita.tomonori@lab.ntt.co.jp, linux-scsi@vger.kernel.org, rdreier@cisco.com, linux-kernel@vger.kernel.org, "Nicholas A. Bellinger" , James.Bottomley@hansenpartnership.com, scst-devel@lists.sourceforge.net, akpm@linux-foundation.org, FUJITA Tomonori , torvalds@linux-foundation.org Subject: Re: [Scst-devel] Integration of SCST in the mainstream Linux kernel References: <20080130083239E.fujita.tomonori@lab.ntt.co.jp> <20080130195635T.tomof@acm.org> <1201785938.7280.105.camel@haakon2.linux-iscsi.org> <47A1EE54.6000005@vlnb.net> <47A1F67C.4020300@scalableinformatics.com> In-Reply-To: Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1782 Lines: 48 Bart Van Assche wrote: > On Jan 31, 2008 5:25 PM, Joe Landman wrote: > >>Vladislav Bolkhovitin wrote: >> >>>Actually, I don't know what kind of conclusions it is possible to make >>>from disktest's results (maybe only how throughput gets bigger or slower >>>with increasing number of threads?), it's a good stress test tool, but >>>not more. >> >>Unfortunately, I agree. Bonnie++, dd tests, and a few others seem to >>bear far closer to "real world" tests than disktest and iozone, the >>latter of which does more to test the speed of RAM cache and system call >>performance than actual IO. > > > I have ran some tests with Bonnie++, but found out that on a fast > network like IB the filesystem used for the test has a really big > impact on the test results. > > If anyone has a suggestion for a better test than dd to compare the > performance of SCSI storage protocols, please let it know. I would suggest you to try something from real life, like: - Copying large file tree over a single or multiple IB links - Measure of some DB engine's TPC - etc. > Bart Van Assche. > > ------------------------------------------------------------------------- > This SF.net email is sponsored by: Microsoft > Defy all challenges. Microsoft(R) Visual Studio 2008. > http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ > _______________________________________________ > Scst-devel mailing list > Scst-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/scst-devel > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/