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Just noticed that my server CPU is being eaten by php at a regular rate of 50-60%. Worse, this is happening since last October but I can't really remember what I did then to cause. The CPU graph for October looks like:

CPU Usage in October of server

Now, I don't want to go ahead and kill php as I might stop some important service but would like to find the culprit. What's the best way to go about this? I certainly don't think it's a webpage since my webserver gets very few hits.

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    How about investigating. For example, find the process that's eating the CPU and see what it's doing, what files it has open, and so on.
    – David Schwartz
    Mar 30, 2015 at 8:34
  • Good tip. :) It seems the problem is cacti.
    – Paulo Matos
    Mar 30, 2015 at 10:17

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