Vivek J. Patankar wrote:
I have an IBM Thinkcentre with a RHEL5.1 client installation fully
updated. The system runs on init level 3. Gnome/KDE package groups are
not installed. The package groups installed are Administration Tools,
Editors, System Tools, Text Based Internet & Server Configuration Tools.
This system has Nessus-3.0.6 installed using the rpm acquired from
nessus.org.
The problem is this... the system slows to a crawl after random time
durations. Trying to login via ssh from a remote system takes up to 5
minutes and a Vulnerability Scan of a subnet with 60-70 systems is known
to take a day! The usual time for this job is less than 10 minutes. If I
reboot the system things go smoothly for anywhere between 30 minutes and
2 hours before slowing down again.
I went through the kernel messages log but no errors or hints to the
problem were found. I even created a *.* entry in syslog.conf to capture
all possible logs into one /megalog/ but found nothing out of place.
I don't suspect any problems in the hardware as until last week this
system was doing the same task running Fedora 8. No performance issues
seen then.
Any pointers? What else should I look at?
Run top on a tty; I think you can do this from inittab if you want.
You're interested in loadaverage, what's consuming RAM and what's using CPU.
The symptoms are akin to a serious overload, loadaverages 40 and more
(which I have seen, also on a ThinkCentre, running Scientific Linux 5).
I didn't get to the bottom of mine, the problem went away, and was most
likely due to seamonkey gorging itself on RAM.
If you haven't figured it out, intelfb loads and gives a fine
framebuffer display, even when running xen. After loading the module,
and for reasons that escape me, one needs to run
fbset --all 1280x1024-70
or similar.
--
Cheers
John
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