How do I find the cause when OSX locks up?
How do I find the cause when OSX locks up?
- Subject: How do I find the cause when OSX locks up?
- From: Anton Kuzmin <email@hidden>
- Date: Thu, 03 Mar 2005 17:45:25 +0000
I'm experiencing a very strange problem on 10.3.8 with one of our own
proxies (smtp/pop3 proxy) - from time to time (once or twice a day), the
whole system locks up - I can move the mouse cursor, but everything else
becomes completely unresponsive, all applications(even daemons) freeze,
but I can ping this computer while it's locked up, and if I try to
connect to any standard service (like ftp or ssh) - the tcp connection
can be established instantly but no data is ever received by the client
(i.e. ftp server prompt). I've tried to run a simple script on this
computer that logs top and zprint output every second into a file, and
the data from the script shows no apparent anomalies in memory usage
just before the computer locks up. Sometimes it unlocks itself after a
random amount of time (can be from 20 seconds to a few hours) in which
case the top output shows crazy cpu usage percentages for different
processes, which total at up to 700-1000% (which could be just a problem
with top getting confused by the lock up).
Are there any other monitoring utilities except top and zprint that I
can use to figure out what's going on?
I tried the same configuration on another computer and it's the same
problem again, which, I think, rules out possible hardware problems.
Any insight on what other resources(or lack thereof) can cause this
behavior and how to monitor them would be very helpful.
Thank you,
Anton Kuzmin
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