What are the biggest signs that a ( LAMP ) server is working too hard? Are there any metrics you take into consideration before beefing up your box or scaling out?


Surely the most straight forward indicator is page loading speed? Google certainly put a lot of emphasis on it.

This will be affected by everything that goes into your system (disk io, network, physical memory, etc). So if your looking for a metric, this must be the one to monitor!

  • +1 - it doesn't matter if the server is running at 10% or 90% utilisation, or if you have 1 or 100 web servers - if your page load time is slow, end users will be unhappy! Feb 13 '10 at 22:44
  • Straight forward, yes. But would this lead you to a false sense of security? What if you observed satisfactory page load speeds but your server was just about to die?
    – Rimian
    Feb 13 '10 at 23:44

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