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Old 23rd November 2010, 12:23
till till is offline
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Please check if there is a plugin available for that cms for caching that e.g. writes plain html files. Such plugins are available for most cms systems like joomla, wordpress or typo3 and greatly improve performance.

You should also check during load test with top which application is causing the high load.

Also do you have any additional apache modules enabled like mod_security which may slow down the system.
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