Date: Fri, 1 Jun 2001 13:36:18 +1200 From: "Juha Saarinen" <juha@saarinen.org> To: "'Mike Holling'" <myke@ees.com>, <freebsd-stable@freebsd.org> Subject: RE: poor performance with FreeBSD and Windows ICS Message-ID: <02b601c0ea3b$41230cc0$0a01a8c0@den2> In-Reply-To: <Pine.BSF.4.21.0105311921410.58525-100000@av.fks.lan>
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:: I've got a DirecPC satellite link, which unfortunately :: forces me to use a :: Win98 box running Microsoft's Internet Connection Sharing to :: get the LAN :: online. Apparently Windows and Linux boxes are able to use :: ICS at full :: thruput (60 kbyte/sec and up) but my FreeBSD boxes can only :: get up to 25 :: or so steady-state, with an initial surge at the start. :: I've confirmed :: the behavior on two different FreeBSD systems (4.2-RELEASE and :: 4.3-RELEASE). The 4.2 box is triple boot, and both WinME :: and Linux on :: that system achieve full thruput. Presumably there's some :: difference in :: the packet flow among the platforms, anyone run into this :: problem before? Have you tried turning on RFC 1323 extensions? Put: tcp_extensions="YES" into /etc/rc.conf. It should be enabled by default though. Check with sysctl -a | grep rfc1323 Another thing that might help with long delay connections is increasing the TCP send and receive buffers. The defaults are a bit small for fat pipe satellite connections: net.inet.tcp.sendspace: 16384 net.inet.tcp.recvspace: 16384 Try upping both to 65534 bytes (with sysctl -w) to see if it helps. -- Juha To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message
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