From mboxrd@z Thu Jan 1 00:00:00 1970 From: Suresh Jayaraman Subject: Re: Severe performance issue (Ubuntu 10.04 mounting an XP share) Date: Tue, 06 Jul 2010 18:41:53 +0530 Message-ID: <4C332B99.8040403@suse.de> References: <20100702141617.46ec65a6@corrin.poochiereds.net> <20100705090425.05c3f568@corrin.poochiereds.net> <20100705093204.5064b612@corrin.poochiereds.net> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Cc: Jeff Layton , linux-cifs-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: James Green Return-path: In-Reply-To: Sender: linux-cifs-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-ID: On 07/06/2010 04:54 PM, James Green wrote: > On 5 July 2010 14:32, Jeff Layton wrote: >> You may be right, but unfortunately I can't do much beyond tell you >> what I think is happening now. It's certainly possible there was a >> change in the cifs code that is tickling a server-side bug. >> >> I think 0xC0000064 == NO_SUCH_USER, so there may be some sort of >> problem with authentication. > > I've rebooted using 2.6.28 and phpunit is far, far faster (although > not as quick as it could be). Instead of 4m30s or more, I just ran it > at 48s. > > Somewhere between .28 and .32 I suspect a regression causing massive > performance penalties. It would be interesting to see if this was > limited to mounting XP shares, I might have a go later. > I'm not sure whether this could be seen an performance issue, sounds more like a bug which results in server dropping packets. Could you please compare the network traces between the suspected versions and observe the difference? Thanks, -- Suresh Jayaraman