topic socket connection in Operating System - HP-UX

socket connection

Wilfred Chau_1 — Wed, 10 Aug 2005 18:12:08 GMT

What is the maximum number of TCP socket connection allowed on hpux?

is it controlled by tcp_conn_request_max?

Re: socket connection

lawrenzo — Wed, 10 Aug 2005 18:21:04 GMT

Hello

if you run #netstat -a to show active socket connections

Run ndd -h tcp_largest_anon_port to find the maximum - it is 65535

HTH

Re: socket connection

Alex Lavrov. — Wed, 10 Aug 2005 18:38:06 GMT

I'm not sure that number of ports has something to do with it. AFAIK, you can open as many sockets you , as long you have enough file descriptors available for them in the systems (kernel parameter "nfile").

Of course it's also depends on the program that handles the cconnection, but if we'll imagine that every program can handle unlimited number of connections, then it depends on number of FDs.

Alex.

Re: socket connection

Sandman! — Wed, 10 Aug 2005 20:51:20 GMT

Wilfred,

It's controlled by "tcp_largest_anon_port".

You can determine the max number of available socket connections with ndd:
============================================
# ndd -h tcp_largest_anon_port

tcp_largest_anon_port:
Largest anonymous port number to use. [1024, 65535]
============================================
Output indicates that max no. of available sockets under hp-ux (32 bit) is 65535.

regards!

Re: socket connection

Alex Lavrov. — Thu, 11 Aug 2005 02:21:45 GMT

Here are some threads with the similar question:
http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=935950
http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=198427
http://forums1.itrc.hp.com/service/forums/questionanswer.do?admit=716493758+1103730995283+28353475&threadId=198427

Re: socket connection

Bharat Katkar — Thu, 11 Aug 2005 03:55:06 GMT

yes you have to take a look at these parameters nfile, maxfiles and maxfiles_lim.

Regards,

Re: socket connection

Sandman! — Thu, 11 Aug 2005 13:58:06 GMT

Take a look at this thread also:

http://forums1.itrc.hp.com/service/forums/questionanswer.do?admit=716493758+1103730995283+28353475&threadId=198427