Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753752Ab1BEWG1 (ORCPT ); Sat, 5 Feb 2011 17:06:27 -0500 Received: from mx.treblig.org ([80.68.94.177]:41850 "EHLO mx.treblig.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753490Ab1BEWGZ convert rfc822-to-8bit (ORCPT ); Sat, 5 Feb 2011 17:06:25 -0500 Date: Sat, 5 Feb 2011 22:06:21 +0000 From: "Dr. David Alan Gilbert" To: Justin Piszcz Cc: Emmanuel Florac , linux-kernel@vger.kernel.org, linux-scsi@vger.kernel.org, linux-net@vger.kernel.org, Alan Piszcz Subject: Re: Supermicro X8DTH-6: Only ~250MiB/s from RAID<->RAID over 10GbE? Message-ID: <20110205220621.GB17347@gallifrey> References: <20110205214550.3cb0f0d1@galadriel2.home> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8BIT In-Reply-To: X-Chocolate: 70 percent or better cocoa solids preferably X-Operating-System: Linux/2.6.32.20-kvm-i386-20100823 (i686) X-Uptime: 22:03:33 up 164 days, 6:30, 1 user, load average: 0.02, 0.01, 0.00 User-Agent: Mutt/1.5.18 (2008-05-17) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1392 Lines: 37 * Justin Piszcz (jpiszcz@lucidpixels.com) wrote: > > > On Sat, 5 Feb 2011, Emmanuel Florac wrote: > >> Le Sat, 5 Feb 2011 14:35:52 -0500 (EST) vous ?criviez: >> > > To respond to everyone: > >> Did you try launching 4 simultaneous cp operations over nfs to get to >> 1.2 GB/s? >> I've witnessed single stream copy performance with Samba being less than >> maximum due to Samba limitations. Running multiple copy ops in parallel then >> usually saturates the pipe. > > > I tried 4 simultaenous cp's and there was little change, 250-320MiB/s. So I think you've said network benchmarks are OK, disc benchmarks are OK, but a copy over the network is slow. What happens if you run a disc benchmark at the same time as a network benchmark; even though the two aren't related? Can you keep the disc busy writing even when the network is being pushed? Dave -- -----Open up your eyes, open up your mind, open up your code ------- / Dr. David Alan Gilbert | Running GNU/Linux | Happy \ \ gro.gilbert @ treblig.org | | In Hex / \ _________________________|_____ http://www.treblig.org |_______/ -- 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/