total number of sockets used by system

[Shivkumar]

What is the command to check total open sockets or opened files on entire server ? Actually, i want to check whether system is running lower on socket side.

Thanks,
Shiv

[Sandman!]

It is controlled on a system-wide basis with the "nfile" kernel parameter and on a per process basis with the "maxfiles_lim" parameter. This is because a socket looks like a standard file You can view the values with the following commands:

# kmtune -q nfile

# kmtune -q maxfiles_lim

cheers!

[Mel Burslan · Accepted solution]

lsof -U | wc -l

or

socketsopen=(( `netstat -an|wc -l` - `netstat -an | grep -n "Active UNIX domain sockets"|cut -d: -f1` - 2 )); echo $socketsopen

they are not identical but very close numbers. I am not sure where their difference is coming from.

hope this helps

[Mel Burslan]

sorry, I made a syntax erroron my previuos post, correct version of the netstat calculation will be as follows:

(( socketsopen=`netstat -an|wc -l` - `netstat -an | grep -n "Active UNIX domain sockets"|cut -d: -f1` - 2 )); echo $socketsopen

[Sandman!]

Take a look at this thread also:

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