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From Peter Phaal <>
Subject [users@httpd] Monitoring Apache worker threads
Date Sat, 06 Oct 2012 14:34:59 GMT
Hi All,

If you are currently using mod-status to check the number of worker
threads, you might be interested to know that mod-sflow now exports
max, idle, active thread statistics (along with standard server and
HTTP performance metrics). Having the stats sent as binary values is
more efficient, easier to configure and more reliable than polling the
server-status page and parsing the text.

Support for the worker pool metrics is now included in Ganglia (which
is a great way to monitor a pool of web servers).

The following article provides some details:


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