Date: Wed, 14 Jul 1999 13:21:55 -0700 From: Mike Smith <mike@smith.net.au> To: "John W. DeBoskey" <jwd@unx.sas.com> Cc: freebsd-hackers@freebsd.org Subject: Re: tcp windowsize query? Message-ID: <199907142021.NAA01388@dingo.cdrom.com> In-Reply-To: Your message of "Wed, 14 Jul 1999 16:08:14 EDT." <199907142008.QAA69071@bb01f39.unx.sas.com>
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> Hi, > > I'm trying to dynamically determine the tcp windowsize. Sysctl > has the following to say, but the name/value pairs are not > documented. > > net.inet.tcp.sendspace: 16384 > net.inet.tcp.recvspace: 16384 ... > send/recv space might be what I'm looking for... They're the default send/receive window sizes, yes. You can tweak them with socket ioctls on a per-socket basis. > 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. -- \\ The mind's the standard \\ Mike Smith \\ of the man. \\ msmith@freebsd.org \\ -- Joseph Merrick \\ msmith@cdrom.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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