From mboxrd@z Thu Jan 1 00:00:00 1970 From: Pekka Enberg Subject: Re: [PATCH 03/13] scsi: unify allocation of scsi command and sense buffer Date: Mon, 25 May 2009 11:15:42 +0300 Message-ID: <84144f020905250115m1dffb51er51f8f339ab58a704@mail.gmail.com> References: <1243236668-3398-1-git-send-email-jens.axboe@oracle.com> <1243236668-3398-6-git-send-email-jens.axboe@oracle.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Cc: linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, chris.mason@oracle.com, david@fromorbit.com, hch@infradead.org, akpm@linux-foundation.org, jack@suse.cz, yanmin_zhang@linux.intel.com, Christoph Lameter , Matthew Wilcox , Nick Piggin To: Jens Axboe Return-path: In-Reply-To: <1243236668-3398-6-git-send-email-jens.axboe@oracle.com> Sender: linux-kernel-owner@vger.kernel.org List-Id: linux-fsdevel.vger.kernel.org On Mon, May 25, 2009 at 10:30 AM, Jens Axboe wrote: > Fold the sense buffer into the command, thereby eliminating a slab > allocation and free per command. > > Signed-off-by: Jens Axboe Interesting. I wonder how this affects the SLAB vs. SLUB regression people are seeing on high end machines in OLTP benchmarks. Pekka