From mboxrd@z Thu Jan 1 00:00:00 1970 From: Gabriel C Subject: Re: 2.6.24-rc3-mm1 Date: Fri, 23 Nov 2007 06:55:41 +0100 Message-ID: <47466B5D.90607@googlemail.com> References: <20071120204525.ff27ac98.akpm@linux-foundation.org> <47462F3C.3040700@googlemail.com> <20071122201250.f957e280.akpm@linux-foundation.org> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Return-path: Received: from nf-out-0910.google.com ([64.233.182.188]:64987 "EHLO nf-out-0910.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752318AbXKWFzs (ORCPT ); Fri, 23 Nov 2007 00:55:48 -0500 Received: by nf-out-0910.google.com with SMTP id g13so2666641nfb for ; Thu, 22 Nov 2007 21:55:46 -0800 (PST) In-Reply-To: <20071122201250.f957e280.akpm@linux-foundation.org> Sender: linux-scsi-owner@vger.kernel.org List-Id: linux-scsi@vger.kernel.org To: Andrew Morton Cc: linux-kernel@vger.kernel.org, linux-scsi@vger.kernel.org, Hannes Reinecke , James Bottomley Andrew Morton wrote: > On Fri, 23 Nov 2007 02:39:08 +0100 Gabriel C wrote: > >> I have some warnings on each SCSI disc: >> >> >> ... >> >> [ 30.724410] scsi 0:0:0:0: Direct-Access SEAGATE ST318406LW 0109 PQ: 0 ANSI: 3 >> [ 30.724419] scsi0:A:0:0: Tagged Queuing enabled. Depth 32 >> [ 30.724435] target0:0:0: Beginning Domain Validation >> [ 30.724446] target0:0:0: Domain Validation Initial Inquiry Failed <-- >> [ 30.724572] target0:0:0: Ending Domain Validation >> [ 30.729747] scsi 0:0:1:0: Direct-Access FUJITSU MAH3182MP 0114 PQ: 0 ANSI: 4 >> [ 30.729754] scsi0:A:1:0: Tagged Queuing enabled. Depth 32 >> [ 30.729771] target0:0:1: Beginning Domain Validation >> [ 30.729780] target0:0:1: Domain Validation Initial Inquiry Failed <-- >> [ 30.729908] target0:0:1: Ending Domain Validation >> > > Don't know what would have caused that. But yes, something is wrong in > scsi land. Actually I'm lucky the author didn't fix that FIXME in scsi_transport_spi.c and I still can boot ;) > >> no idea whatever this is related but buffered disk reads are 2.XX MB/sec and the box is somewhat laggy. >> >> hdparm -t on sda and sdb reports : >> >> /dev/sda: >> Timing buffered disk reads: 8 MB in 3.26 seconds = 2.46 MB/sec >> >> /dev/sdb: >> Timing buffered disk reads: 8 MB in 3.56 seconds = 2.25 MB/sec >> >> My IDE discs are fine. >> >> Please let me know if you need my config or any other informations. >> > > And you're the second to report very slow scsi throughput in 2.6.24-rc3-mm1. > I found the commit which cause these problems , it is in git-scsi-misc patch and reverting it fixes both problems for me. http://git.kernel.org/?p=linux/kernel/git/jejb/scsi-misc-2.6.git;a=commitdiff_plain;h=8655a546c83fc43f0a73416bbd126d02de7ad6c0;hp=5bc717b6bdaaf52edf365eb7d9d8c89fec79df5d