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I have a PHP application that for every request loads 1 ini file, and at least 10 PHP files.
As these same files are loaded for every single request I thought about mounting them on a ram disk but I have been told that the linux filing system (ext3) will basically cache them in some way that a ram disk would not improve performance.
Can anyone verify this and possibly explain what is actually happening?
Many thanks.
The virtual file system of (not only) linux uses a cache for virtually every filesystem. So yes, that’s in place for ext3, too.
But you might be interested in something like apc which stores the byte/intermediate code for php’s zend engine in memory.