Date: Fri, 17 Sep 2004 23:19:22 +0200 From: "Raphael H. Becker" <rabe@p-i-n.com> To: freebsd-current@freebsd.org Cc: freebsd-net@freebsd.org Subject: Re: Strange things on GBit / 1000->100 / net.inet.tcp.inflight.* Message-ID: <20040917231922.G55054@p-i-n.com> In-Reply-To: <414ADD15.FAC42CDB@freebsd.org>; from andre@freebsd.org on Fri, Sep 17, 2004 at 02:48:21PM %2B0200 References: <20040917104356.E55054@p-i-n.com> <414ADD15.FAC42CDB@freebsd.org>
next in thread | previous in thread | raw e-mail | index | archive | help
On Fri, Sep 17, 2004 at 02:48:21PM +0200, Andre Oppermann wrote: > "Raphael H. Becker" wrote: > > My guess: The 5.3-Boxes send bigger TCP-Windows than our switch has > > buffer for each port resulting in massive packetloss or something like > > that. The sender is "too fast" for the switch or the switch isn't able > > to convert from 1000MBit to 100MBit under heavy load > > (store&forward-buffer) > > Could you send me the output of (after you have run the 1000->100 test): > > # sysctl net.inet.tcp > # sysctl net.inet.tcp.hostcache.list > # netstat -s -p tcp > # netstat -s -p ip http://rhb.uugrn.org/FreeBSD/bugs/5.x/1000-to-100/check_before.txt http://rhb.uugrn.org/FreeBSD/bugs/5.x/1000-to-100/check_after.txt wget: Length: 1,160,773,632 (unauthoritative) 1% [ ] 12,199,080 383.23K/s ETA 48:46^C HTH Raphael Becker
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20040917231922.G55054>