From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jens Axboe Subject: Re: [PATCH 00/32] AIO performance improvements/cleanups, v3 Date: Fri, 04 Jan 2013 10:22:47 +0100 Message-ID: <50E69F67.6050407@kernel.dk> References: <1356573611-18590-1-git-send-email-koverstreet@google.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Cc: linux-kernel@vger.kernel.org, linux-aio@kvack.org, linux-fsdevel@vger.kernel.org, zab@redhat.com, bcrl@kvack.org, jmoyer@redhat.com, viro@zeniv.linux.org.uk, tytso@mit.edu To: Kent Overstreet Return-path: In-Reply-To: <1356573611-18590-1-git-send-email-koverstreet@google.com> Sender: owner-linux-aio@kvack.org List-Id: linux-fsdevel.vger.kernel.org On 2012-12-27 02:59, Kent Overstreet wrote: > Last posting: http://article.gmane.org/gmane.linux.kernel.aio.general/3242 > > As before, changes should mostly be noted in the patch descriptions. > > Some random bits: > * flush_dcache_page() patch is new > * Rewrote the aio_read_evt() stuff again > * Fixed a few comments > * Included some more patches, notably the batch completion stuff > > My git repo has Jens' aio/dio patches on top of this stuff. As of the > latest version, I'm seeing a couple percent better throughput with the > ring buffer, and I think Jens was seeing a couple percent better with > his linked list approach - at this point I think the difference is > noise, we're both testing with fairly crappy drivers. I still see 10-15% better performance with my non-ring method, so it's a bit faster than that. That's on the single device, driving that to the maximum. -- Jens Axboe -- To unsubscribe, send a message with 'unsubscribe linux-aio' in the body to majordomo@kvack.org. For more info on Linux AIO, see: http://www.kvack.org/aio/ Don't email: aart@kvack.org From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754128Ab3ADJYH (ORCPT ); Fri, 4 Jan 2013 04:24:07 -0500 Received: from 173-166-109-252-newengland.hfc.comcastbusiness.net ([173.166.109.252]:36228 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752563Ab3ADJYD (ORCPT ); Fri, 4 Jan 2013 04:24:03 -0500 Message-ID: <50E69F67.6050407@kernel.dk> Date: Fri, 04 Jan 2013 10:22:47 +0100 From: Jens Axboe MIME-Version: 1.0 To: Kent Overstreet CC: linux-kernel@vger.kernel.org, linux-aio@kvack.org, linux-fsdevel@vger.kernel.org, zab@redhat.com, bcrl@kvack.org, jmoyer@redhat.com, viro@zeniv.linux.org.uk, tytso@mit.edu Subject: Re: [PATCH 00/32] AIO performance improvements/cleanups, v3 References: <1356573611-18590-1-git-send-email-koverstreet@google.com> In-Reply-To: <1356573611-18590-1-git-send-email-koverstreet@google.com> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 2012-12-27 02:59, Kent Overstreet wrote: > Last posting: http://article.gmane.org/gmane.linux.kernel.aio.general/3242 > > As before, changes should mostly be noted in the patch descriptions. > > Some random bits: > * flush_dcache_page() patch is new > * Rewrote the aio_read_evt() stuff again > * Fixed a few comments > * Included some more patches, notably the batch completion stuff > > My git repo has Jens' aio/dio patches on top of this stuff. As of the > latest version, I'm seeing a couple percent better throughput with the > ring buffer, and I think Jens was seeing a couple percent better with > his linked list approach - at this point I think the difference is > noise, we're both testing with fairly crappy drivers. I still see 10-15% better performance with my non-ring method, so it's a bit faster than that. That's on the single device, driving that to the maximum. -- Jens Axboe