The Linux Page Cache and pdflushThe Linux Page Cache and pdflush: Theory of Operation and Tuning for Write-Heavy Loads As you write out data ultimately intended for disk, Linux caches this information in an area of memory called the page cache. You can find out basic info about the page cache using tools like free, vmstat or top. See http://gentoo-wiki.com/FAQ_Linux_Memory_Management to learn how to interpret top's memory infor
