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Date:      Wed, 14 Jul 1999 15:51:14 -0700
From:      Mike Smith <mike@smith.net.au>
To:        Jonathan Lemon <jlemon@americantv.com>
Cc:        hackers@freebsd.org
Subject:   Re: tcp windowsize query? 
Message-ID:  <199907142251.PAA02200@dingo.cdrom.com>
In-Reply-To: Your message of "Wed, 14 Jul 1999 16:12:46 CDT." <199907142112.QAA10842@free.pcs> 

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> In article <local.mail.freebsd-hackers/199907142021.NAA01388@dingo.cdrom.com> you write:
> >>    delayed ack sounds interesting....
> >
> >Turning that off disables TCP slow-start.  It's a huge performance 
> >booster for things like SMB service, where you have lots of short-lived 
> >TCP connections on a local net.
> 
> Mike probably already knows this, but just a general clarification:
> 
> No, it does _not_ turn off slow-start.  Normally a TCP implementation
> will delay sending an ACK to the peer until the TCP fasttimer expires,
> or certain other conditions are met.  The goal here is to amortize an
> ACK over several incoming data packets.

Yeah, brain fart.  Slow start != delayed ACK.  Blah.
-- 
\\  The mind's the standard       \\  Mike Smith
\\  of the man.                   \\  msmith@freebsd.org
\\    -- Joseph Merrick           \\  msmith@cdrom.com




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