Date: Fri, 21 Sep 2001 01:52:50 -0700 From: Tony Saign <tony@saign.com> To: "'Tsuchiya Yoshihiro'" <tsuchiya@flab.fujitsu.co.jp>, "'Mike Silbersack'" <silby@silby.com> Cc: <net@FreeBSD.ORG> Subject: RE: TCP performance question Message-ID: <000301c1427a$cbdee3b0$3e01a8c0@tsaignmobl> In-Reply-To: <3BAAFA13.8040708@flab.fujitsu.co.jp>
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Just tried it on a 4.4-RELEASE box and it appears to work :) * -----Original Message----- * From: owner-freebsd-net@FreeBSD.ORG * [mailto:owner-freebsd-net@FreeBSD.ORG]On Behalf Of Tsuchiya Yoshihiro * Sent: Friday, September 21, 2001 1:28 AM * To: Mike Silbersack * Cc: net@FreeBSD.ORG * Subject: Re: TCP performance question * * * Mike Silbersack wrote: * * >On Fri, 21 Sep 2001 tsuchiya@flab.fujitsu.co.jp wrote: * > * >>and we changed the size from 1 to 10000 byte and measured * the time of * >>read/write pair on the server. Usually the measured time is * >>around or less than 1 msec, however it is always 100msec * when the size is * >>between 2049 and 2919 byte or between 4381 and 5839 byte or * >>between 7301 and 8751 byte. 100 times slower. * >> * > * >Try disabling delayed ACKs and see how that affects your * results. The * >default delay for delayed acks is 100ms. * > * >sysctl -w net.inet.tcp.delayed_ack=0 * > * * I found a machine with FreeBSD4.3 and tried it, but it didn't work. * * Yoshi * * * * * * To Unsubscribe: send mail to majordomo@FreeBSD.org * with "unsubscribe freebsd-net" in the body of the message * To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message
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