From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Benjamin S." Subject: Re: bad performance with SSD since kernel version 2.6.32 Date: Sun, 21 Feb 2010 02:26:13 +0100 Message-ID: <20100221022613.1096fd12@uranus> References: <20100220142826.62dd5989@pluto-lenny.milky.way> <4B802B54.1080009@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Return-path: Received: from mail.gmx.net ([213.165.64.20]:40888 "HELO mail.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1755730Ab0BUB0a (ORCPT ); Sat, 20 Feb 2010 20:26:30 -0500 In-Reply-To: <4B802B54.1080009@gmail.com> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Robert Hancock Cc: Jeff Garzik , linux-ide@vger.kernel.org > > Does somebody have an idea what I can test before I have to bisect > > it? > > Could be some kind of block layer or IO scheduler behavior change.. you > could try testing after doing: > > echo noop > /sys/block/sda/queue/scheduler > > or > > echo deadline > /sys/block/sda/queue/scheduler Thanks for your reply. I have already tested both schedulers. Unfortunately it does not make any difference which of them is used.