> > Yes, I can attest to this an I belive it is actually the case on both > -current and -releng4 that disabling newreno improves TCP performance. > > I belive running an X11 application or scp(1) over a wavelan is a very > good test-bed for this issue. > > -- > Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
I find this patch also improves performance of SSH on most network media. Why so many applications go to the trouble to disable Nagle's algorithm is beyond me. I suspect the socket option has too seductive of a name. louie Index: packet.c =================================================================== RCS file: /a/cvs/src/crypto/openssh/packet.c,v retrieving revision 1.1.1.1.2.4 diff -u -r1.1.1.1.2.4 packet.c --- packet.c 28 Sep 2001 01:33:34 -0000 1.1.1.1.2.4 +++ packet.c 2 Apr 2002 18:26:41 -0000 @@ -1281,9 +1281,11 @@ error("setsockopt IPTOS_LOWDELAY: %.100s", strerror(errno)); } +#if 0 if (setsockopt(connection_in, IPPROTO_TCP, TCP_NODELAY, (void *) &on, sizeof(on)) < 0) error("setsockopt TCP_NODELAY: %.100s", strerror(errno)); +#endif } else if (packet_connection_is_ipv4()) { /* * Set IP options for a non-interactive connection. Use To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-hackers" in the body of the message