Date: Tue, 25 Sep 2001 18:41:35 +0900 From: tsuchiya@flab.fujitsu.co.jp To: silby@silby.com, tsuchiya@flab.fujitsu.co.jp Cc: net@FreeBSD.org Subject: Re: TCP performance question Message-ID: <200109250941.SAA01211@const.kawasaki.flab.fujitsu.co.jp>
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> > > > > > I tried to say that it had no effect between FreeBSD4.3 and Solaris, on my > > > problem. That's what I did previously. > > > > > > I found discussion on "delayed ack problem"(January 24 and 25) in this > > > mailing list. Though still do not understand why delayed_ack=0 does not > > > work for FreeBSD and Solaris. > > > > > > Anyway I appreciate your helping me. > > > Thank you, > > > Yoshi > > > > If you can reproduce the problem, please take some traces with tcpdump and > > post them somewhere for public consumption. Perhaps then the problem can > > be found and fixed. > > > > Mike "Silby" Silbersack > > > Ok, "yokan" is FreeBSD4.1.1 and I set delayed_ack=0, and "purcell" is > a Solaris 2.7 box. The sending size at first is 1460+588byte and 1460+589byte > later. When the size gets more than 1460+589bytes, the performance goes down. > At that time, purcell begins to send acks, possibly because yokan behaves > very slow. > I installed FreeBSD4.4 on this machine(yokan), and tested TCP with Solaris. Sadly, the result is as bad as it was; same thing happened. Yoshi To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message
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