From mboxrd@z Thu Jan 1 00:00:00 1970 From: Milosz Tanski Subject: Re: [Lsf-pc] [LSF/MM TOPIC] async buffered diskio read for userspace apps Date: Tue, 20 Jan 2015 18:53:57 -0500 Message-ID: References: <20150115223157.GB25884@quack.suse.cz> <20150116165506.GA10856@samba2> <20150119071218.GA9747@jeremy-HP> <1421652849.2080.20.camel@HansenPartnership.com> <54BD234F.3060203@kernel.dk> <54BEAD82.3070501@kernel.dk> <54BEE436.4020205@kernel.dk> <54BEE51F.7080400@kernel.dk> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Cc: James Bottomley , Jeremy Allison , Volker Lendecke , Jan Kara , Christoph Hellwig , linux-mm@kvack.org, "linux-fsdevel@vger.kernel.org" , lsf-pc@lists.linux-foundation.org To: Jens Axboe Return-path: Received: from mail-la0-f54.google.com ([209.85.215.54]:45793 "EHLO mail-la0-f54.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751299AbbATXx7 (ORCPT ); Tue, 20 Jan 2015 18:53:59 -0500 Received: by mail-la0-f54.google.com with SMTP id pv20so37325530lab.13 for ; Tue, 20 Jan 2015 15:53:57 -0800 (PST) In-Reply-To: <54BEE51F.7080400@kernel.dk> Sender: linux-fsdevel-owner@vger.kernel.org List-ID: On Tue, Jan 20, 2015 at 6:30 PM, Jens Axboe wrote: > On 01/20/2015 04:26 PM, Jens Axboe wrote: >> On 01/20/2015 04:22 PM, Milosz Tanski wrote: >>> Side note Jens. >>> >>> Can you add a configure flag to disable use of SHM (like for ESX)? It >>> took me a while to figure out the proper define to manually stick in >>> the configure. >>> >>> The motivation for this is using rr (mozila's replay debugger) to >>> debug fio. rr doesn't support SHM. http://rr-project.org/ gdb's >>> reversible debugging is too painfully slow. >> >> Yeah definitely, that's mean that thread=1 would be a requirement, >> obviously. But I'd be fine with adding that flag. > > http://git.kernel.dk/?p=fio.git;a=commit;h=ba40757ed67c00b37dda3639e97c3ba0259840a4 Great, thanks for fixing it so quickly. Hopefully it'll be useful to others as well. - M -- Milosz Tanski CTO 16 East 34th Street, 15th floor New York, NY 10016 p: 646-253-9055 e: milosz@adfin.com From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-la0-f52.google.com (mail-la0-f52.google.com [209.85.215.52]) by kanga.kvack.org (Postfix) with ESMTP id 4DF946B0032 for ; Tue, 20 Jan 2015 18:53:59 -0500 (EST) Received: by mail-la0-f52.google.com with SMTP id hs14so37295398lab.11 for ; Tue, 20 Jan 2015 15:53:58 -0800 (PST) Received: from mail-la0-f41.google.com (mail-la0-f41.google.com. [209.85.215.41]) by mx.google.com with ESMTPS id t10si17915935lat.56.2015.01.20.15.53.57 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Tue, 20 Jan 2015 15:53:58 -0800 (PST) Received: by mail-la0-f41.google.com with SMTP id gm9so11267882lab.0 for ; Tue, 20 Jan 2015 15:53:57 -0800 (PST) MIME-Version: 1.0 In-Reply-To: <54BEE51F.7080400@kernel.dk> References: <20150115223157.GB25884@quack.suse.cz> <20150116165506.GA10856@samba2> <20150119071218.GA9747@jeremy-HP> <1421652849.2080.20.camel@HansenPartnership.com> <54BD234F.3060203@kernel.dk> <54BEAD82.3070501@kernel.dk> <54BEE436.4020205@kernel.dk> <54BEE51F.7080400@kernel.dk> Date: Tue, 20 Jan 2015 18:53:57 -0500 Message-ID: Subject: Re: [Lsf-pc] [LSF/MM TOPIC] async buffered diskio read for userspace apps From: Milosz Tanski Content-Type: text/plain; charset=UTF-8 Sender: owner-linux-mm@kvack.org List-ID: To: Jens Axboe Cc: James Bottomley , Jeremy Allison , Volker Lendecke , Jan Kara , Christoph Hellwig , linux-mm@kvack.org, "linux-fsdevel@vger.kernel.org" , lsf-pc@lists.linux-foundation.org On Tue, Jan 20, 2015 at 6:30 PM, Jens Axboe wrote: > On 01/20/2015 04:26 PM, Jens Axboe wrote: >> On 01/20/2015 04:22 PM, Milosz Tanski wrote: >>> Side note Jens. >>> >>> Can you add a configure flag to disable use of SHM (like for ESX)? It >>> took me a while to figure out the proper define to manually stick in >>> the configure. >>> >>> The motivation for this is using rr (mozila's replay debugger) to >>> debug fio. rr doesn't support SHM. http://rr-project.org/ gdb's >>> reversible debugging is too painfully slow. >> >> Yeah definitely, that's mean that thread=1 would be a requirement, >> obviously. But I'd be fine with adding that flag. > > http://git.kernel.dk/?p=fio.git;a=commit;h=ba40757ed67c00b37dda3639e97c3ba0259840a4 Great, thanks for fixing it so quickly. Hopefully it'll be useful to others as well. - M -- Milosz Tanski CTO 16 East 34th Street, 15th floor New York, NY 10016 p: 646-253-9055 e: milosz@adfin.com -- 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