[Beowulf] Linux page cache and pdflush

[Mark Hahn]

>> 	Drepper, What Every Programmer Should Know About Memory
>> 	http://www.akkadia.org/drepper/cpumemory.pdf
>
> Fred, 114 pages on memory and cache management at Beer O'clock on a Friday

well, it's exhaustively comprehensive, even pedantically so.
you'll either already know or want to skip 98% of it.
it also doesn't directly address the drop_caches issue.