Date: Mon, 24 Mar 2008 10:40:47 -0500 From: Josh Paetzel <josh@tcbug.org> To: "Daniel Andersson" <engywook@gmail.com> Cc: freebsd-performance@freebsd.org Subject: Re: Tuning: 100mbit faster, gbit slower. Message-ID: <200803241040.53346.josh@tcbug.org> In-Reply-To: <24adbbc00803240422m5b04b485s5df2f406aa89dc2b@mail.gmail.com> References: <24adbbc00803231521h78844f26q77c48573f82408b9@mail.gmail.com> <200803240327.01211.josh@tcbug.org> <24adbbc00803240422m5b04b485s5df2f406aa89dc2b@mail.gmail.com>
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[-- Attachment #1 --] On Monday 24 March 2008 06:22:12 am Daniel Andersson wrote: > Thanks for the reply! Maybe I should have been more clear. > My setup looks like this: > internet - em1(server box) em0 - windoze desktop. > > The internet(em1) 100mbit seems to do fine, even better than > before, I get about 11mb/s with rtorrent(uploading). It's the > internal gbit connection that's weird with ftp. It not as fast nor > as smooth as it was before I did the "tuning". I doesn't have > any trouble running ftping at 30mb/s after the tuning so it is > definately capabel of delivering 100mbit? > <snip> 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. 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 [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.8 (FreeBSD) iEYEABECAAYFAkfny4UACgkQJvkB8SevrsuUmgCgjarINiVQ0Qi8FB0LGsTSPPNO SiMAmQFJP+ygvk69VZsY3KiDGI7Z885J =UBlt -----END PGP SIGNATURE-----
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