Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752974Ab2KWNZa (ORCPT ); Fri, 23 Nov 2012 08:25:30 -0500 Received: from casper.infradead.org ([85.118.1.10]:52329 "EHLO casper.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751441Ab2KWNZ3 (ORCPT ); Fri, 23 Nov 2012 08:25:29 -0500 Message-ID: <50AF7901.20401@kernel.dk> Date: Fri, 23 Nov 2012 14:24:17 +0100 From: Jens Axboe MIME-Version: 1.0 To: Linus Torvalds CC: Jeff Chua , Jan Kara , lkml , linux-fsdevel Subject: Re: Recent kernel "mount" slow References: <20121120180949.GG1408@quack.suse.cz> In-Reply-To: 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 Content-Length: 903 Lines: 25 On 2012-11-22 20:21, Linus Torvalds wrote: > Doesn't sound like a fsdevel issue since it seems to be independent of > filesystems. More like some generic block layer thing. Adding Jens > (and quoting the whole thing) > > Jens, any ideas? Most of your stuff came in after -rc2, which would > fit with the fact that most of the slowdown seems to be after -rc2 > according to Jeff. No ideas. Looking at what went in from my side, only the rq plug sorting is a core change, and that should not cause any change in behaviour for a single device. That's commit 975927b9. > Jeff, more bisecting would be good, though. Probably required, yes... -- Jens Axboe -- 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/