From mboxrd@z Thu Jan 1 00:00:00 1970 From: Phillip Susi Subject: Re: Tracking actual disk write sources instead of flush thread Date: Wed, 23 Apr 2014 21:20:28 -0400 Message-ID: <535866DC.6010505@ubuntu.com> References: <534DE477.5080904@ubuntu.com> <20140416140147.GA15429@linux.intel.com> <534E9E9D.5030600@ubuntu.com> <4C30833E5CDF444D84D942543DF65BDA625F51A9@G4W3303.americas.hpqcorp.net> <534EC964.6080702@ubuntu.com> <4C30833E5CDF444D84D942543DF65BDA625F5246@G4W3303.americas.hpqcorp.net> <534ED9B8.9090605@ubuntu.com> <20140423134805.GB13050@linux.intel.com> <535816E7.2070106@ubuntu.com> <20140423230042.GB23206@thunk.org> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Cc: Matthew Wilcox , "Zuckerman, Boris" , "linux-fsdevel@vger.kernel.org" To: Theodore Ts'o Return-path: Received: from cdptpa-outbound-snat.email.rr.com ([107.14.166.230]:53728 "EHLO cdptpa-oedge-vip.email.rr.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1750992AbaDXBU3 (ORCPT ); Wed, 23 Apr 2014 21:20:29 -0400 In-Reply-To: <20140423230042.GB23206@thunk.org> Sender: linux-fsdevel-owner@vger.kernel.org List-ID: -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 On 04/23/2014 07:00 PM, Theodore Ts'o wrote: > On Wed, Apr 23, 2014 at 03:39:19PM -0400, Phillip Susi wrote: >> I'm just a little flabbergasted that this regression ( I'm sure >> there was a time when the current io accounting mechanism did >> work, probably before the buffer_head -> page cache transition >> way, *way* back when ) > > Using what tool? Task-level io accounting is new compared to the > buffer -> page cache transition, as far as I can remember. Using iotop. I thought that task level io accounting went all the way back to bsd? -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQEcBAEBCgAGBQJTWGbZAAoJEI5FoCIzSKrwAL0H/1X5SLCuLytZFmZ/EGFvpXwB 1GuMwxwwyRR+fNVTAiCvk7mHI1i1k/qfPujAc1aRtnJaAxmSSsFYo2YAMocE0Xl+ AOave6IYDaLDZruagPA/rYcfcYDrJtR6eBrVkroPGUNzkCLULOIveUYEB4WtzGft hYn5U1hgkTwQWrsaZurjoCWj9Dxd751ohsGVzp/+6f7/G/UWwdgTHwMfNerlE4g5 tzCAud/WcIMGcxO9JQoBvY9qxp3NEHVYAlVE1kcsTjdA46u1CxRm86+vpkWM86qR vOQ7eBfBngCgiw8iaTp3tIj+22E3TzH9FzwUB1aPmO7KpFIRa1Qb5AwN0MYgdWA= =UCmL -----END PGP SIGNATURE-----