From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758371AbcATU3g (ORCPT ); Wed, 20 Jan 2016 15:29:36 -0500 Received: from mail-io0-f196.google.com ([209.85.223.196]:36013 "EHLO mail-io0-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753941AbcATU3d (ORCPT ); Wed, 20 Jan 2016 15:29:33 -0500 MIME-Version: 1.0 In-Reply-To: <20160120195957.GV6033@dastard> References: <80934665e0dd2360e2583522c7c7569e5a92be0e.1452549431.git.bcrl@kvack.org> <20160112011128.GC6033@dastard> <20160112022548.GD6033@dastard> <20160112033708.GE6033@dastard> <20160115202131.GH6330@kvack.org> <20160120195957.GV6033@dastard> Date: Wed, 20 Jan 2016 12:29:32 -0800 X-Google-Sender-Auth: 0lnQx7g5-7qQE4mPSRuz-wkjsqo Message-ID: Subject: Re: [PATCH 07/13] aio: enabled thread based async fsync From: Linus Torvalds To: Dave Chinner Cc: Benjamin LaHaise , linux-aio@kvack.org, linux-fsdevel , Linux Kernel Mailing List , Linux API , linux-mm , Alexander Viro , Andrew Morton Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Jan 20, 2016 at 11:59 AM, Dave Chinner wrote: >> >> Are there other users outside of Solace? It would be good to get comments.. > > I know of quite a few storage/db products that use AIO. The most > recent high profile project that have been reporting issues with AIO > on XFS is http://www.scylladb.com/. That project is architected > around non-blocking AIO for scalability reasons... I was more wondering about the new interfaces, making sure that the feature set actually matches what people want to do.. That said, I also agree that it would be interesting to hear what the performance impact is for existing performance-sensitive users. Could we make that "aio_may_use_threads()" case be unconditional, making things simpler? Linus From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: MIME-Version: 1.0 In-Reply-To: <20160120195957.GV6033@dastard> References: <80934665e0dd2360e2583522c7c7569e5a92be0e.1452549431.git.bcrl@kvack.org> <20160112011128.GC6033@dastard> <20160112022548.GD6033@dastard> <20160112033708.GE6033@dastard> <20160115202131.GH6330@kvack.org> <20160120195957.GV6033@dastard> Date: Wed, 20 Jan 2016 12:29:32 -0800 Message-ID: Subject: Re: [PATCH 07/13] aio: enabled thread based async fsync From: Linus Torvalds To: Dave Chinner Cc: Benjamin LaHaise , linux-aio@kvack.org, linux-fsdevel , Linux Kernel Mailing List , Linux API , linux-mm , Alexander Viro , Andrew Morton Content-Type: text/plain; charset=UTF-8 Sender: owner-linux-mm@kvack.org List-ID: On Wed, Jan 20, 2016 at 11:59 AM, Dave Chinner wrote: >> >> Are there other users outside of Solace? It would be good to get comments.. > > I know of quite a few storage/db products that use AIO. The most > recent high profile project that have been reporting issues with AIO > on XFS is http://www.scylladb.com/. That project is architected > around non-blocking AIO for scalability reasons... I was more wondering about the new interfaces, making sure that the feature set actually matches what people want to do.. That said, I also agree that it would be interesting to hear what the performance impact is for existing performance-sensitive users. Could we make that "aio_may_use_threads()" case be unconditional, making things simpler? Linus -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org