gzip compression increases performance, then eventually increases response time from server

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http://serverfault.com – Here is my current server scenario. I'm running on a Rackspace Cloud instance (16GB of RAM), using cPanel/WHM on a CentOS 5.5 install. I'm currently running about 10 Magento sites, all varying in size (from medium size to small) Over time I noticed the speed of the sites slowing down. I've done numerous tweaks to the database and other things to help increase Magento's performance. I recently enabled gzip compression globally by adding the following the Post Include for the apache config. <IfModule mod_deflate.c> # Insert filter on all content SetOutputFilter DEFLATE # (HowTos)