Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933589AbZDCXsp (ORCPT ); Fri, 3 Apr 2009 19:48:45 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1760253AbZDCXsh (ORCPT ); Fri, 3 Apr 2009 19:48:37 -0400 Received: from srv5.dvmed.net ([207.36.208.214]:55292 "EHLO mail.dvmed.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1760167AbZDCXsg (ORCPT ); Fri, 3 Apr 2009 19:48:36 -0400 Message-ID: <49D6A04B.2080104@garzik.org> Date: Fri, 03 Apr 2009 19:48:27 -0400 From: Jeff Garzik User-Agent: Thunderbird 2.0.0.21 (X11/20090320) MIME-Version: 1.0 To: Linus Torvalds CC: Chris Mason , Andrew Morton , Jens Axboe , Linux Kernel Mailing List Subject: Re: Linux 2.6.29 References: <1238758370.32764.5.camel@think.oraclecorp.com> <49D66C0E.5090301@garzik.org> <49D68431.30703@garzik.org> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Spam-Score: -4.4 (----) X-Spam-Report: SpamAssassin version 3.2.5 on srv5.dvmed.net summary: Content analysis details: (-4.4 points, 5.0 required) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1024 Lines: 39 Linus Torvalds wrote: > "fio" does well: > > http://git.kernel.dk/?p=fio.git;a=summary Neat tool, Jens... > and I think it comes with a few example files. Here's the random write > file that Jens suggested, and that works pretty well.. > > It first creates a 2GB file to do the IO on, then does random 4k writes to > it with O_DIRECT. > > If your SSD does badly at it, you'll just want to kill it, but it shows > you how many MB/s it's doing (or, in the sucky case, how many kB/s). heh, so far, the SSD is poking along... Jobs: 1 (f=1): [w] [2.5% done] [ 0/ 282 kb/s] [eta 02h:24m:59s] Compared to the same job file, started at the same time, on the Seagate 500GB SATA: Jobs: 1 (f=1): [w] [9.9% done] [ 0/ 1204 kb/s] [eta 26m:28s] Regards, Jeff -- 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/