Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751403AbaGJGUx (ORCPT ); Thu, 10 Jul 2014 02:20:53 -0400 Received: from bombadil.infradead.org ([198.137.202.9]:42900 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750708AbaGJGUw (ORCPT ); Thu, 10 Jul 2014 02:20:52 -0400 Date: Wed, 9 Jul 2014 23:20:40 -0700 From: Christoph Hellwig To: "Elliott, Robert (Server Storage)" Cc: Jens Axboe , "dgilbert@interlog.com" , Christoph Hellwig , James Bottomley , Bart Van Assche , Benjamin LaHaise , "linux-scsi@vger.kernel.org" , "linux-kernel@vger.kernel.org" Subject: Re: scsi-mq V2 Message-ID: <20140710062040.GB20146@infradead.org> References: <1403715121-1201-1-git-send-email-hch@lst.de> <20140708144829.GA5539@infradead.org> <53BD7041.5010300@interlog.com> <53BD9A24.7010203@kernel.dk> <94D0CD8314A33A4D9D801C0FE68B402958B9628B@G9W0745.americas.hpqcorp.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <94D0CD8314A33A4D9D801C0FE68B402958B9628B@G9W0745.americas.hpqcorp.net> User-Agent: Mutt/1.5.23 (2014-03-12) X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Jul 10, 2014 at 12:53:36AM +0000, Elliott, Robert (Server Storage) wrote: > the problem still occurs - fio results in low or 0 IOPS, with perf top > reporting unusual amounts of time spent in do_io_submit and io_submit. The diff between the two version doesn't show too much other possible interesting commits, the most interesting being some minor block updates. I guess we'll have to a manual bisect, I've pushed out a scsi-mq.3-bisect-1 branch that is rebased to just before the merge of the block tree, and a scsi-mq.3-bisect-2 branch that is just after the merge of the block tree to get started. -- 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/