You might try turning off the DB2 agent.  It looks like that is what the OOM killer is 
trying to do.  It also looks like you have a lot of them running.  Is that what you 
want?

-----Original Message-----
From: Post, Mark K [mailto:[EMAIL PROTECTED]
Sent: Tuesday, June 24, 2003 7:12 AM
To: [EMAIL PROTECTED]
Subject: Re: slow response times


Tim,

You need some tools that will tell you what process or processes are eating
up your storage over time.  Arbitrarily turning off services to figure it
out could take you forever, and is not a good use of your time.  (Although I
would say turning Tivoli off would be a good first choice.)  This is
probably a good time to talk to management about buying such a tool, because
you're likely to need it in the future.

Mark Post

-----Original Message-----
From: Tim Hanschen [mailto:[EMAIL PROTECTED]
Sent: Tuesday, June 24, 2003 1:04 AM
To: [EMAIL PROTECTED]
Subject: slow response times


Hi,

I have a problem with some linux-guest runnung under z/VM 4.3.

After a special time some linux-guests seems to not answer on any network
requests, e.g. ssh, ftp, telnet.... but it is possible to ping the machine.
Firstly I thought that the maschine is dead, but that I noticed, that the
response time is only VERY slow. It takes about 30-40 minutes to login....
And than, what a surprise, everything is ok till the next time.

With fcon I can see that the CPU usage of the guest is very high.

Any ideas were I can get some more informations or hints?

We are running SLES7 and tivoli-framework. When our problem occurs we can
see some strange messages in /var/log/messages:


Jun 23 13:36:41 LXITIV02 sshd[13495]: Connection closed by
::ffff:10.64.84.41
Jun 23 13:41:20 LXITIV02 kernel: Out of Memory: Killed process 11553
(RIM_DB2_Agent).
Jun 23 13:41:20 LXITIV02 kernel: Out of Memory: Killed process 11554
(RIM_DB2_Agent).
Jun 23 13:41:20 LXITIV02 kernel: Out of Memory: Killed process 11555
(RIM_DB2_Agent).
Jun 23 13:41:20 LXITIV02 kernel: Out of Memory: Killed process 11556
(RIM_DB2_Agent).
Jun 23 13:42:31 LXITIV02 kernel: Out of Memory: Killed process 10730
(RIM_DB2_Agent).
Jun 23 13:42:31 LXITIV02 kernel: Out of Memory: Killed process 10732
(RIM_DB2_Agent).
Jun 23 13:42:31 LXITIV02 kernel: Out of Memory: Killed process 10733
(RIM_DB2_Agent).
Jun 23 13:42:31 LXITIV02 kernel: Out of Memory: Killed process 10734
(RIM_DB2_Agent).
Jun 23 13:43:10 LXITIV02 kernel: Out of Memory: Killed process 10726
(RIM_DB2_Agent).
Jun 23 13:43:10 LXITIV02 kernel: Out of Memory: Killed process 10727
(RIM_DB2_Agent).
Jun 23 13:43:10 LXITIV02 kernel: Out of Memory: Killed process 10728
(RIM_DB2_Agent).
Jun 23 13:43:10 LXITIV02 kernel: Out of Memory: Killed process 10729
(RIM_DB2_Agent).
Jun 23 13:43:30 LXITIV02 sshd[13859]: Did not receive identification string
from ::ffff:10.64.84.41.
Jun 23 13:43:51 LXITIV02 kernel: Out of Memory: Killed process 11727
(RIM_DB2_Agent).
Jun 23 13:43:51 LXITIV02 kernel: Out of Memory: Killed process 11728
(RIM_DB2_Agent).
Jun 23 13:43:51 LXITIV02 kernel: Out of Memory: Killed process 11729
(RIM_DB2_Agent).
Jun 23 13:43:51 LXITIV02 kernel: Out of Memory: Killed process 11730
(RIM_DB2_Agent).
Jun 23 13:44:11 LXITIV02 sshd[13853]: Did not receive identification string
from ::ffff:10.64.84.41.
Jun 23 13:44:13 LXITIV02 kernel: Out of Memory: Killed process 11730
(RIM_DB2_Agent).
Jun 23 13:44:26 LXITIV02 sshd[13865]: Did not receive identification string
from ::ffff:10.64.84.41.
Jun 23 13:44:55 LXITIV02 kernel: Out of Memory: Killed process 13860
(RIM_DB2_Agent).
Jun 23 13:45:34 LXITIV02 sshd[13871]: Connection closed by
::ffff:10.96.211.19
Jun 23 13:45:46 LXITIV02 kernel: Out of Memory: Killed process 11750
(tec_config).
Jun 23 13:45:53 LXITIV02 sshd[13858]: Connection closed by
::ffff:10.96.211.19
Jun 23 13:46:38 LXITIV02 kernel: Out of Memory: Killed process 13869
(RIM_DB2_Agent).
Jun 23 13:46:55 LXITIV02 kernel: Out of Memory: Killed process 10661
(RIM_DB2_prog).
Jun 23 13:47:36 LXITIV02 kernel: Out of Memory: Killed process 12156
(RIM_DB2_prog).
Jun 23 13:47:47 LXITIV02 kernel: Out of Memory: Killed process 11795
(snmpd).
Jun 23 13:47:49 LXITIV02 kernel: VM: killing process snmpd
Jun 23 13:47:49 LXITIV02 oserv94[477]:
/usr/local/Tivoli/bin/linux-s390/TAS/RIM/RIM_DB2_prog killed by signal 9
Jun 23 13:48:04 LXITIV02 sshd[13876]: Accepted password for ROOT from
::ffff:10.96.211.19 port 2036


Ther are a lot of kernel: Out of Memory errors.... we started with 96MB+65MB
swap.... after that me raised our memory to 256MB and today we raised the
memory again to 512MB....

When the problem occurs the established sessions, like ssh, keep usable, but
the response times are aweful... but we see, that there is still memory
free...


- Tim -
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