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initial latency and cpu power

There was an initial latency in browser to start to load the main page. For almost 6-7 seconds it was saying Waiting for .... before the page transfer starts.
I checked the cpu and memory loads synchronously and see that this period of waiting is completely from apache and mysql CPU usage.
Only changing to a dedicated hypertreading system with same number of virtual CPUs and same amount of memory make the initial latency less then 3 seconds :)

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