We're running a number of high traffic single-user WP blogs under multiple domains on the same server. Most of the WP installs are running WP 2.2 on a DV Extreme server with MT and using WP-Cache. Looking to crank out more speed as we will soon be adding additional blogs to our server and was wondering if anyone has tried using one of the open source PHP accelerator systems like eaccelerator? Our MySQL server (runs on same box) is pretty tuned and so is Apache. I know a few options is to move MySQL to its own server, but I'd like to get things really tuned on the server and was thinking a PHP accelerator/cache system would be the next step.
Any links or if you have any experience (good or bad), I'd like to hear them.
By the way, our server has 1GB of Ram and we currently push about 2.5 million page views a month.