httpd -n ## processess

[strebel]

At times when we see a server under load and struggling we see processes spawned by root with the command httpd -n 41 or some other number.

What are these processes?

We recently provisioned a new lsws 4.1.7 node and with 6 cores and load of 2 we are seem many httpd -n ## procs. (as if it was under load)

 

[webizen]

pls do 'httpd -h' to find out what the option '-n' do for your httpd.

 

[strebel]

no httpd service.

root@PAGE01VMW03:/home/jstrebel# which httpd
root@PAGE01VMW03:/home/jstrebel# httpd -h
bash: httpd: command not found

 

[mistwang]

use pstree to check who own those processes.

 

[strebel]

owned by root

 

[mistwang]

It is not related to LSWS.
You should find out what it is doing with "lsof" and "strace".

 

[strebel]

Sorry, guess my next reply did not save, it is owned by litespeed



├─litespeed─┬─httpd
│ └─litespeed─┬─admin_php
│ ├─httpd

 

[mistwang]

Our lscgid should be listed as

httpd (lscgid)

in "ps -ef" output, and usually only one.
not httpd -n ##

 

[strebel]

See this image: http://cl.ly/3V1q283Y41151r0L2A3Y

The httpd -n 72 process is under the litespeed thread.

As I said, we see these from time to time when a server is really under load, but in this case the load on a 8 core machine is ~2 and these are spawning 2 or 3 at a time.

 

[mistwang]

That's normal for PHP suEXEC, it will change user ID and execute lsphp5, usually it is not visible in ps, nothing to worry about.