If 128 is good enough for complete connection queue length, what is a reasonable value for incomplete connection queue length(tcp_max_syn_backlog)? May i know what is it set to when TUX broke the world record? Are there any other configurable parameters that can be changed to support maximum connections/sec Thanks Sridhar "David S. Miller" <davem@redhat.com> on 04/16/2001 03:21:33 PM To: Sridhar Samudrala/Beaverton/IBM@IBMUS cc: linux-net@vger.kernel.org Subject: Re: listen() backlog samudrala@us.ibm.com writes: > > I noticed that the backlog value that can be specified with listen() is > limited by the value of SOMAXCONN which is defined as 128 in > include/linux/socket.h. > > Why is it not defined as a runtime configurable value that can be > modified using either sysctl or /proc interface? > > Is the value 128 big enough for a high end webserver? Or is the > kernel compiled with a higher SOMAXCONN for such cases? Tux broke the world record specweb99 records with that value of SOMAXCONN, your server if designed correctly can do it to. There is no reason to increase this value that I have been shown. Later, David S. Miller davem@redhat.com - : send the line "unsubscribe linux-net" in the body of a message to majordomo@vger.kernel.org
