From mboxrd@z Thu Jan 1 00:00:00 1970 From: Steve French Subject: Big performance improvements seen with cifs async write patches even over localhost Date: Fri, 27 May 2011 00:14:19 -0500 Message-ID: Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 To: linux-cifs-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-fsdevel , LKML Return-path: Sender: linux-cifs-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: linux-fsdevel.vger.kernel.org Did some informal testing of Jeff Layton's cifs async_write patch set tonight (recent kernel). Copying 700MB sequentially was 20% faster from cifs kernel client to Samba 3.6 with his patches - even mounted over localhost (where network latency is a much smaller issue) and with a slow laptop drive! I was simply doing time dd if=/dev/zero of=/mnt/null bs=1M count=700 repeated 4 times each way (with old module, and with same code with Jeff's cifs async write code builtin), deleting the target file in between each run. I am looking forward to trying this over GigE tomorrow to servers with faster disks. -- Thanks, Steve