Very Computer

by **Karen Abgaria** » Fri, 30 Aug 2002 08:22:45

Did anybody ever see "ps" command to run for several seconds or even
minutes?

I have this on one of my systems.

Apparently it is related to a bunch of processes created at the time
when this is happening.

Could it be a configuration issue?

Thanks in advance,
Karen Abgarian.

by **Maarten Kreug** » Sat, 31 Aug 2002 03:59:01

Quote:>Did anybody ever see "ps" command to run for several seconds or even
>minutes?

>Apparently it is related to a bunch of processes created at the time
>when this is happening.

I have never seen it happen. A cause for this could be a very large
number of processes, like more then say 10.000, or the userid
conversion to names is slow. Are you using NIS? Or maybe have a lot of
users defined on the system?

Try the following commands:

ps naux # The n flag prevents uid --> username conversion
mkpasswd -f # This creates a new hash of the /etc/passwd file

Maarten Kreuger

by **Norman Levi** » Sat, 31 Aug 2002 13:47:56

| Did anybody ever see "ps" command to run for several seconds or even
| minutes?
|
| I have this on one of my systems.
|
| Apparently it is related to a bunch of processes created at the time
| when this is happening.
|
| Could it be a configuration issue?
|
| Thanks in advance,
| Karen Abgarian.
|
You could be compromised. A typical 'root kit' will replace the ps command so as
to NOT show processes that are part of your exploitation.
norm

by **Dan Fost** » Sun, 01 Sep 2002 03:03:11

Alternatively, it could be DCE/LDAP/NIS access being broken, causing
a delay in every single getpw* lookup -- which a ps generate a lot of.

-Dan

by **Crepald** » Sun, 01 Sep 2002 04:50:02

Karen,

the ps commando in many situations be slow because NFS that no answer.
The system wait for a answer before continue the command.

hugs
Crepaldi
System Administrator

--
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by **Peter Puc** » Wed, 04 Sep 2002 07:35:44

Your system could be heavily loaded ie. CPU = 100%.. That would cause all
commands to take longer..

Quote:> Did anybody ever see "ps" command to run for several seconds or even
> minutes?

> I have this on one of my systems.

> Apparently it is related to a bunch of processes created at the time
> when this is happening.

> Could it be a configuration issue?

> Thanks in advance,
> Karen Abgarian.

Very Computer

ps command taking a lot of time

ps command taking a lot of time

ps command taking a lot of time

ps command taking a lot of time

ps command taking a lot of time

ps command taking a lot of time

ps command taking a lot of time