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Apache CPU usage and Memory usage is too high ([warn-phpd] mmap cache can't open /var/www/../httpdocs too many open files - LookLinux
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apache 2.2 - Unusually large number of httpd processes and high CPU load on MongoDB replica set members - Server Fault
High CPU usage [100%] with mod_wsgi and httpd, I'm using it for graphite-web · Issue #430 · GrahamDumpleton/mod_wsgi · GitHub
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