From mboxrd@z Thu Jan 1 00:00:00 1970 From: Abraham van der Merwe Date: Mon, 09 Dec 2002 16:11:25 +0000 Subject: Re: [LARTC] how to get the latency down on maxed out classes? MIME-Version: 1 Content-Type: multipart/mixed; boundary="cvVnyQ+4j833TQvp" Message-Id: List-Id: References: In-Reply-To: To: lartc@vger.kernel.org --cvVnyQ+4j833TQvp Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Hi Don! > > I then tried fifos. With small packet fifos the packet loss is just > > to great to be of any use and even then the latency is quite high (~200ms). > You consider 200ms high? One max size packet = 1500 bytes = 12Kbit > which is about 200ms on a 64Kbit link. You can't expect to do better. The problem is that with 200ms the packet loss is so much that the link is effectively useless (90% packet loss). As soon as I make the queue big enough to not drop significant amounts of packets, the latency goes way up (>3 secs). --cvVnyQ+4j833TQvp Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.5 (GNU/Linux) Comment: For info see http://www.gnupg.org iD8DBQE99MCt0jJV70h31dERAq6gAJ9gRCo8TuZ1631q/wPrEHPqAUwsFwCdHaJN YNUZN74qzzhKbhbYbLlQxXw= =xYZo -----END PGP SIGNATURE----- --cvVnyQ+4j833TQvp-- _______________________________________________ LARTC mailing list / LARTC@mailman.ds9a.nl http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://lartc.org/