Date: Wed, 20 May 2009 17:55:29 -0400 (EDT) From: "Michael L. Squires" <mikes@siralan.org> To: freebsd-stable@freebsd.org Subject: net.inet.tcp.tso=1 still neceesary with fxp was Re: TCP differences in 7.2 vs 7.1 Message-ID: <20090520173716.U1136@familysquires.net> In-Reply-To: <20090515085806.GX65350@michelle.cdnetworks.co.kr> References: <guccc2$8b4$1@ger.gmane.org> <4A09DEF1.2010202@delphij.net> <4A09FDB2.5080307@eyede.com> <20090513004131.GP65350@michelle.cdnetworks.co.kr> <DAF693BD-D7B0-49FA-97EF-41C1EA1FAF84@nokia.com> <20090514082750.GU65350@michelle.cdnetworks.co.kr> <310A73CC-A32D-4794-BF23-A49715AFCF99@nokia.com> <20090515085806.GX65350@michelle.cdnetworks.co.kr>
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I started having speed problems after shifting from 7.1-STABLE to 7.1-PRERELEASE. They have continued with 7.2-STABLLE. Reverting to the 7.1-STABLE kernel eliminated the problem. After downloading 7.2-STABLE from cvsup.freebsd.org at about 10:40 AM EST on 5/20/2009, doing a buildworld/buildkernel/installkernel/installworld cycle I still need to execute "net.inet.tcp.tso=1" to elminate throughput problems between my home system (on Comcast) and my office PC (connected via a Time-Warner connection). This also affects connections to other systems; downloading Web pages (ebay.com) speeds up after I change the TSO entry. The box in question runs NAT and has an fxp (Intel Pro100) interface connected to a Comcast cable modem and an em (Intel Pro1000) interface connected to the internal network. There are no network errors in "netstat -i" on either interface. The "if_fxp.c" code appears to be the May 7 version. This is the dmesg entry for the card in question. The system is a dual Xeon Supermicro 1U box, 1GB RAM, single 300GB IDE hard drive. fxp0: <Intel 82551 Pro/100 Ethernet> port 0xe400-0xe43f mem 0xfebfd000-0xfebfdfff,0xfeb80000-0xfeb9ffff irq 27 at device 7.0 on pci0 miibus0: <MII bus> on fxp0 Mike Squires
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