Date: Wed, 20 Jul 2011 14:07:27 -0400 From: "Michael W. Lucas" <mwlucas@blackhelicopters.org> To: Steven Hartland <killing@multiplay.co.uk> Cc: freebsd-net@freebsd.org, Jack Vogel <jfvogel@gmail.com> Subject: Re: kern/152828: [em] poor performance on 8.1, 8.2-PRE Message-ID: <20110720180727.GA42467@bewilderbeast.blackhelicopters.org> In-Reply-To: <8169F6D082484BCF8BBA5E31AF4D00BB@multiplay.co.uk> References: <CAFOYbckwaroGvB93Ve=Sb_0uraF-F1ZHFkHRPeUOYZiV73RF9A@mail.gmail.com> <8169F6D082484BCF8BBA5E31AF4D00BB@multiplay.co.uk>
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Hi, I'm not seeing a complete stall, just very slow performance. I have two hosts on a shared gigabit Ethernet. One is OpenSolaris, the other FreeBSD. My SCP from the Opensolaris box to the FreeBSD one goes at: 653 MB 00:29 The FreeBSD machine is an Intel SS4200-E. I have a second environment, identical except they're on a 100Mb switch rather than gigabit. Very similar throughput. Any suggestions appreciated. Thanks, ==ml On Wed, Jul 20, 2011 at 06:31:17PM +0100, Steven Hartland wrote: > It stalls on just a basic file scp. Our current test is to scp the freebsd > iso to the machine. It won't always do it but it does "seem" like once its > had > one stall its very much more prone to repeat stalls. > > Here are some examples of what we see:- > > FreeBSD-8.2-RELEASE-amd64-disc1.iso 41% 284MB 0.3KB/s - stalled > -Read from remote host test01: Operation timed out > lost connection > > > world-2011-05-15-09-53-16.tar.gz 100% 67MB 3.4MB/s 00:20 > world-2011-05-30-07-35-37.tar.gz 100% 68MB 5.7MB/s 00:12 > world-2011-05-05-23-51-00.tar.gz 100% 50MB 3.6MB/s 00:14 > world-2011-06-06-14-20-09.tar.gz 100% 81MB 3.7MB/s 00:22 > world-2011-06-15-09-10-42.tar.gz 44% 61MB 41.5KB/s - stalled > -^world-2011-06-15-09-10-42.tar.gz > Failed to restore server, aborting! > Write failed: Broken pipe > > Regards > Steve > > ----- Original Message ----- > From: "Jack Vogel" <jfvogel@gmail.com> > To: "Steven Hartland" <killing@multiplay.co.uk> > Cc: <freebsd-net@freebsd.org>; "Michael W. Lucas" > <mwlucas@blackhelicopters.org> > Sent: Wednesday, July 20, 2011 6:18 PM > Subject: Re: kern/152828: [em] poor performance on 8.1, 8.2-PRE > > > >Can you formulate a scenario that anyone else can setup and reproduce this? > > > >Jack > > > > > >On Wed, Jul 20, 2011 at 10:13 AM, Steven Hartland > ><killing@multiplay.co.uk>wrote: > > > >>** > >>Yep, it stalls 8.2 partners as well :( > >> > >>----- Original Message ----- > >>*From:* Jack Vogel <jfvogel@gmail.com> > >>*To:* Steven Hartland <killing@multiplay.co.uk> > >>*Cc:* Michael W. Lucas <mwlucas@blackhelicopters.org> ; > >>freebsd-net@freebsd.org > >>*Sent:* Wednesday, July 20, 2011 6:03 PM > >>*Subject:* Re: kern/152828: [em] poor performance on 8.1, 8.2-PRE > >> > >>Did you eliminate that 7.0 box as part of the issue? Meaning switch to say > >>a Linux > >>or 8.2 partner to see if the problem persists or stops? > >> > >> > >>================================================ > >>This e.mail is private and confidential between Multiplay (UK) Ltd. and > >>the > >>person or entity to whom it is addressed. In the event of misdirection, > >>the > >>recipient is prohibited from using, copying, printing or otherwise > >>disseminating it or any information contained in it. > >> > >>In the event of misdirection, illegible or incomplete transmission please > >>telephone +44 845 868 1337 > >>or return the E.mail to postmaster@multiplay.co.uk. > >> > >_______________________________________________ > >freebsd-net@freebsd.org mailing list > >http://lists.freebsd.org/mailman/listinfo/freebsd-net > >To unsubscribe, send any mail to "freebsd-net-unsubscribe@freebsd.org" > > > > ================================================ > This e.mail is private and confidential between Multiplay (UK) Ltd. and the > person or entity to whom it is addressed. In the event of misdirection, the > recipient is prohibited from using, copying, printing or otherwise > disseminating it or any information contained in it. > In the event of misdirection, illegible or incomplete transmission please > telephone +44 845 868 1337 > or return the E.mail to postmaster@multiplay.co.uk. -- Michael W. Lucas http://www.MichaelWLucas.com/, http://blather.MichaelWLucas.com/ Latest book: Network Flow Analysis http://www.networkflowanalysis.com/ mwlucas@BlackHelicopters.org, Twitter @mwlauthor
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