Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755799AbYGGSho (ORCPT ); Mon, 7 Jul 2008 14:37:44 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753697AbYGGShe (ORCPT ); Mon, 7 Jul 2008 14:37:34 -0400 Received: from lucidpixels.com ([75.144.35.66]:49230 "EHLO lucidpixels.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753413AbYGGShd (ORCPT ); Mon, 7 Jul 2008 14:37:33 -0400 Date: Mon, 7 Jul 2008 14:37:31 -0400 (EDT) From: Justin Piszcz To: linux-kernel@vger.kernel.org, linux-raid@vger.kernel.org, xfs@oss.sgi.com Subject: Re: 12 Veliciraptors again w/x4 card (~1gbyte/sec aggregate read)! In-Reply-To: Message-ID: References: User-Agent: Alpine 1.10 (DEB 962 2008-03-14) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1784 Lines: 46 On Mon, 7 Jul 2008, Justin Piszcz wrote: > Each PCI-e x1 card has 1 veliciraptor on it now. > Got an x4 card wit 4 sata ports: > > Not quite the > 1 gbyte/sec I was hoping for in regards to the reads > but pretty close! Going to remove one of the drives from the x1 card and put it on the x4 card instead, then I will use all 4 SATA ports on the x4 and hopefully get better bw. If you look at 7,8,9 there is little improvement: (PCI-e x1) 7 VR 2 6 160 46744 6599020 44688 0 0 748204 17 3042 9084 0 34 40 26 3 6 160 46592 6598824 44372 0 0 747520 8 2975 9047 1 33 31 36 8 VR 2 7 160 46512 6598612 44580 0 0 761184 16 3089 9937 0 36 40 24 2 7 160 44528 6600392 44360 0 0 759720 8 2993 9522 0 36 36 28 9 VR 2 8 160 47152 6596824 44572 0 0 767016 0 3075 9730 1 37 39 24 2 7 160 46576 6597728 44688 0 0 771200 0 3032 9568 0 37 40 23 But once I hit the drives on the x4 card, vroom vroom! 10 VR 0 10 160 45048 6598240 44428 0 0 889072 8 3599 11561 0 47 20 33 2 10 160 45232 6598116 44772 0 0 890112 0 3495 11547 0 46 23 31 11 VR 4 8 160 45536 6594716 44600 0 0 996352 0 3947 12134 1 62 13 25 2 9 160 45348 6594912 44096 0 0 1009152 0 3949 11949 0 63 10 28 12 VR 6 8 160 45092 6583136 47016 0 0 1063200 0 4187 12394 1 71 9 21 3 11 160 47080 6578492 47588 0 0 1058412 0 4224 12547 1 72 8 20 Justin. -- 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/