Hi list! My virtual server seems to have a problem and I don't know how to find it.
Today, while trying to create a new postgresql database I noticed that certain system operations seem to take ages. Normal work on the shell works just fine but for example accessing the postgresql server through psql, restarting tomcat, postgresql or zope all show the very same behavior: Execution freezes, the load average climbs to 1-1.9 and after a few minutes (maybe longer) the task finishes correctly. During all this time, top reports that the CPUs are 100% idle. Other services, for example rsyncd or openvpn, work normally. I also tried restarting the VM. Shutdown took maybe 10 or 15 minutes. Booting was much faster with only a few minutes until all services were up and running. However, it didn't solve the problem. So, my question is: How can I find out what is causing this? Can I somehow trace it? Find out why a process waits? Keep in mind that this is a virtual server. I have no control over the kernel. Oh, and before you ask: The only recent update was rkhunter from 1.2.9-r1 to 1.3.4-r2. I also enabled the chkrootkit weekly cronjob. Thanks in advance! Florian Philipp
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