Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1031739AbbKECq0 (ORCPT ); Wed, 4 Nov 2015 21:46:26 -0500 Received: from aserp1040.oracle.com ([141.146.126.69]:27193 "EHLO aserp1040.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1030549AbbKECqZ (ORCPT ); Wed, 4 Nov 2015 21:46:25 -0500 Message-ID: <563AC2ED.8020205@oracle.com> Date: Thu, 05 Nov 2015 10:46:05 +0800 From: Bob Liu User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130308 Thunderbird/17.0.4 MIME-Version: 1.0 To: Konrad Rzeszutek Wilk CC: xen-devel@lists.xen.org, linux-kernel@vger.kernel.org, roger.pau@citrix.com, felipe.franciosi@citrix.com, axboe@fb.com, avanzini.arianna@gmail.com, rafal.mielniczuk@citrix.com, jonathan.davies@citrix.com, david.vrabel@citrix.com Subject: Re: [PATCH v4 10/10] xen/blkback: make pool of persistent grants and free pages per-queue References: <1446438106-20171-1-git-send-email-bob.liu@oracle.com> <1446438106-20171-11-git-send-email-bob.liu@oracle.com> <20151105024314.GD3949@x230.dumpdata.com> In-Reply-To: <20151105024314.GD3949@x230.dumpdata.com> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit X-Source-IP: userv0022.oracle.com [156.151.31.74] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 843 Lines: 25 On 11/05/2015 10:43 AM, Konrad Rzeszutek Wilk wrote: > On Mon, Nov 02, 2015 at 12:21:46PM +0800, Bob Liu wrote: >> Make pool of persistent grants and free pages per-queue/ring instead of >> per-device to get better scalability. > > How much better scalability do we get? > Which already showed in [00/10], I paste them here: domU(orig) 4 queues 8 queues 16 queues iops: 690k 1024k(+30%) 800k 750k After patch 9 and 10: domU(orig) 4 queues 8 queues 16 queues iops: 690k 1600k(+100%) 1450k 1320k Chart: https://www.dropbox.com/s/agrcy2pbzbsvmwv/iops.png?dl=0 -- 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/