Date: Mon, 24 Mar 2008 16:59:53 +0100 From: "Daniel Andersson" <engywook@gmail.com> To: "Josh Paetzel" <josh@tcbug.org> Subject: Re: Tuning: 100mbit faster, gbit slower. Message-ID: <24adbbc00803240859w1e1cc372xae8c97a29d474b92@mail.gmail.com> In-Reply-To: <200803241040.53346.josh@tcbug.org> References: <24adbbc00803231521h78844f26q77c48573f82408b9@mail.gmail.com> <200803240327.01211.josh@tcbug.org> <24adbbc00803240422m5b04b485s5df2f406aa89dc2b@mail.gmail.com> <200803241040.53346.josh@tcbug.org>
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> >I think we are having a terminology problem here. Are you meaning 30mb/s > as > >in 30 megabits per second (30% of 100TX speed) or do you mean 30 MB/s as > in > >30 Megabytes/sec? I think in rereading you post you are meaning > Megabytes > >but using the terminology for megabits. Ah, yes, sorry! I ment 30MB/s. >So here's what I've done to nearly saturate gig-e. Keep in mind that I > have > >15k SAS drives and intel gig-e adapters that aren't sitting in 33mhz > 32bit > >PCI slots, single IDE/SATA drives are going to be a bottleneck as are > 33mhz > >32bit PCI NICs. > > > >This is on RELENG_6_3 > > > > > >net.inet.tcp.sendspace=262144 > >net.inet.tcp.recvspace=262144 > > > >kern.ipc.maxsockbuf=1048576 > >ifconfig em0 mtu 9014 (You'll need a switch that supports jumbo frames to > do > >this) > > > >iperf shows wire traffic around 969 mbps and FTP runs at 110 Megs/sec > >scp/sftp appears to be cpu bound at 45 Megs/sec, and NFS with TCP mounts > and > >send/receive packets set to 16384 manages about 90 Megs/sec. > >-- > >Thanks, > >Josh Paetzel > >PGP: 8A48 EF36 5E9F 4EDA 5A8C 11B4 26F9 01F1 27AF AECB > > I don't really need the extra speed on the internal network. I just want the steady 50MB/s back, but also the increased performance of rtorrent I got from my "tuning". I'm also planning on getting more disks and setting up either zfs or softraid to lessen the hdd bottleneck. One thing at a time though. Maybe setting kern.ipc.maxsockbuf=1M+ and leaving everything else default will solve it. Since rtorrent has it's own setting for buffer sizes. Thanks for the replies and sorry for the mixup! Danielhome | help
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