On 2/9/2012 04:45, Michael Schnell wrote: > On 02/09/2012 10:41 AM, ik wrote: >> Disk IO is one of the slowest memory usage that exists (even SSD drives). RAM >> is the fastest memory exists today. > That is why the OS uses a RAM cache and does Disk I/O only when viable. +1 and i indicated as such in my response written just a few minutes ago ;)