topic TCIP Sockets in Operating System - OpenVMS

TCIP Sockets

matthew robey — Tue, 08 Feb 2005 23:40:59 GMT

We have an application which doesn't seem happy unless it creates thousands of device sockets.

How can I tell what the maximum number of sockets are allowed to be created and can I cahnge the keep alive time on these sockets if they are no longer connected.

TCPIP V5.4 Eco 2

PS does SOMAXCONN=1024 mean a max of 1024 sockets ?

Thanks,

Matt

Re: TCIP Sockets

Karl Rohwedder — Wed, 09 Feb 2005 01:21:19 GMT

SOMAXCONN is the maximum number of pending TCP connections, see:
http://h71000.www7.hp.com/doc/732final/6631/6631pro_005.html#max_tcp

The maximum number of sockets depends on system resources (e.g. CHANNELCNT) and may be limited to 32768, but I'm not sure about that.

mfg Kalle

Re: TCIP Sockets

Ian Miller. — Wed, 09 Feb 2005 05:55:02 GMT

for a large number of sockets you should look at the scalable kernal option that can be enabled but do install ECO 4 kit first!

See release notes for how to enable scable kernel
http://h71000.www7.hp.com/doc/732FINAL/DOCUMENTATION/PDF/TCPIP054_RELNOTES.PDF

See this for increasing the number of sockets
http://h71000.www7.hp.com/doc/732final/6631/6631pro_006.html#bg_devices