Date: Sun, 5 Nov 2000 17:24:00 -0800 From: Kris Kennaway <kris@FreeBSD.ORG> To: David Greenman <dg@root.com> Cc: freebsd-net@FreeBSD.ORG Subject: Re: tcp sendspace/recvspace Message-ID: <20001105172400.A8778@citusc17.usc.edu> In-Reply-To: <200011052202.OAA24207@implode.root.com>; from dg@root.com on Sun, Nov 05, 2000 at 02:02:44PM -0800 References: <200011052202.OAA24207@implode.root.com>
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[-- Attachment #1 --] On Sun, Nov 05, 2000 at 02:02:44PM -0800, David Greenman wrote: > I've been messing around with the net.inet.tcp.sendspace and > net.inet.tcp.recvspace parameters on ftp.freesoftware.com and have found > that there is a significant performance improvement when increasing these > to 32768 bytes. Apparantly there are enough systems out there with higher > window maxes that it really does make a difference. By significant > improvement, I mean about a average of a 20% increase in Mbps per user, > and this was just the change over a 30 minute period with lots of connections > still using the old 16K values. > Any objections to increasing the defaults in FreeBSD to 32K? Won't this impact the latency of multiple connections over a slow PPP link? Kris [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.4 (FreeBSD) Comment: For info see http://www.gnupg.org iEYEARECAAYFAjoGCC8ACgkQWry0BWjoQKVnywCgtho5cl8IN9GDSp4ZntINW4Gx /WUAoO1tiCGIaHRy65auWQMM6cmq0VZN =1a/M -----END PGP SIGNATURE-----help
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