[CentOS] Hlp with server load

[Alexander Dalloz]

Am Mo, den 19.12.2005 schrieb Chris Mason (Lists) um 22:04:

> Yes, top is not showing me any real informaiton and the server is 
> responsive, but the MTA shuts down because it sees such high load. It 
> seems to be fake load, locked up processes. I see a lot of vsftpd 
> processes using ps -x and I cannot kill them. It's very strange. I have 
> several dedicated servers that get hammered all day but I have never 
> seen this before. Even shuting down httpd and mysql does not make any 
> difference, even though they should be the main load.
> I ahve recently installed MailScanner which usually increases the load 
> tremendously, but I did not see sendmail as the problem, even when I 
> shut down MailScanner, there were no sendmail processes remaining and 
> the load kept climbing. The fact that the server is still responsive is 
> very curious,at 23 it should be very sluggish.

Get a full process list and find the zombies - process state "Z",
probably even "D". Yes, they do not really cause CPU usage but increase
the load. If it is vsftpd which often dies abnormal you should
investigate that further.

Alexander


-- 
Alexander Dalloz | Enger, Germany | GPG http://pgp.mit.edu 0xB366A773
legal statement: http://www.uni-x.org/legal.html
Fedora Core 2 GNU/Linux on Athlon with kernel 2.6.11-1.35_FC2smp 
Serendipity 23:26:25 up 15 days, 4:03, load average: 0.27, 0.20, 0.12 
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