Date: Thu, 03 Nov 2011 10:24:44 +0000 From: Vincent Hoffman <vince@unsane.co.uk> To: Michael Sierchio <kudzu@tenebras.com> Cc: FreeBSD-Questions@freebsd.org Subject: Re: nfs client speed lower than expected. Message-ID: <4EB26BEC.3070004@unsane.co.uk> In-Reply-To: <CAHu1Y71aQAZuSsAsJPTbqoz3LNnaqo5enf0ZRXzY_YfEOARjMw@mail.gmail.com> References: <4EB1D792.8070103@unsane.co.uk> <CAHu1Y71aQAZuSsAsJPTbqoz3LNnaqo5enf0ZRXzY_YfEOARjMw@mail.gmail.com>
next in thread | previous in thread | raw e-mail | index | archive | help
I'll give it a try when i get a moment, These servers are all on gigabit LAN (sadly 1500 mtu until I can get the network guy to schedule an outage to reboot the switches and enable jumbo frames,) same subnet so i would expect UDP to have similar or better performance. Vince On 02/11/2011 23:53, Michael Sierchio wrote: > Mount via tcp. > > On Wed, Nov 2, 2011 at 4:51 PM, Vincent Hoffman <vince@unsane.co.uk> wrote: >> Hi all, >> What kind of speed should I be expecting over an NFS mount from >> a linux box using a gig interface (igb)? I'm seeing linux clients >> getting approx 2 or 3 times the throughput rsyncing files from a linux >> nfs server that i get from a 8-stable FreeBSD client. >> representative results >> 7.26MB/s - Freebsd client >> 21.10MB/s liunx client >> I've tried a variety of files to try and take caching out of the >> equation, I've tweaked a few sysctls after much googling >> >> kern.ipc.maxsockbuf=4000000 >> net.inet.tcp.sendbuf_max=16777216 >> net.inet.tcp.recvbuf_max=16777216 >> net.inet.tcp.sendbuf_inc=16384 >> net.inet.tcp.recvbuf_inc=524288 >> net.inet.udp.recvspace=65535 >> net.local.stream.recvspace=65535 >> net.local.stream.sendspace=65535 >> >> with no obvious improvement. >> freebsd mount options >> ro,noatime,noexec,nosuid,udp,nfsv3,rsize=1024,wsize=1024,bg,hard,intr,timeout=4,retrans=4 >> linux mount options >> _netdev,ro,noatime,nodev,noexec,nosuid,proto=udp,vers=3,rsize=1k,wsize=1k,bg,hard,intr,timeo=4,retrans=4 >> >> I have seen that using the linux server as an nfs client to write to the >> NFS server on the freebsd box gives similar performance to a linux >> client pulling from the linux server so I'm guessing its something to do >> with the freebsd nfs client? >> >> Any suggestions/clues welcome. >> >> Thanks, >> Vince >> _______________________________________________ >> freebsd-questions@freebsd.org mailing list >> http://lists.freebsd.org/mailman/listinfo/freebsd-questions >> To unsubscribe, send any mail to "freebsd-questions-unsubscribe@freebsd.org" >>
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?4EB26BEC.3070004>