Memory leak

 
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Operating Systems Linux Red Hat Memory leak
# 36  
Old 06-02-2011
how can i check thrashing/hitting on hard drive?
# 37  
Old 06-03-2011
Checking logs would be the obvious place to look. I'm told the slabtop utility can be useful for disk access though I don't quite understand its output myself.

Have you checked the logs of your webserver? Maybe your web server is being spider-botted, dragged down by excessive requests.
# 38  
Old 06-03-2011
You can collect sar data or install iotop and have that send data to a log for later analysis.

Alternately, I might suggest a tool to monitor your server/applications. I have used Hyperic in the past, and the free version would be more than adequate.
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