Checking CPU load per core on a SMP system

[cpeterson]

So, I got stuck assisting the monitoring team with configuring nagios to monitor our few hundred freeBSD boxes.

I got stuck at the question of "how do we monitor the load on each CPU core?". I know in 7.1 top -P will spit out something similar to what I'm looking for, but sadly we're still on 6-STABLE in most places, and actually still have a few 4.10 boxes kicking around.

So, is there any way to get the CPU usage statistics per core in the 6-STABLE branch?

Thanks!

 

[ale]

$ top -P should work on 6-STABLE too.

 

[brd@]

Judging from this:

http://www.freebsd.org/cgi/cvsweb.cgi/src/usr.bin/top/machine.c

You'd need to run at least FreeBSD 6.4, though you could probably MFC the changes to the code to 4.x if you felt comfortable doing so. I would really recommending moving to at least 6.4 or 7.1 so you could use freebsd-update

 

[Oko]

systat

should work for you on 6.3 and below.

 

[vermaden]

on older FreeBSD releases use [cmd=]top -S[/cmd]

 

[cpeterson]

Thanks for the suggestions, top -S looks like it should do what I need once I wrap it with a sh script.

Systat would work too, but it's less easy than just running grep on "top -S -b" to automate the checking.