Bruce Momjian <pgman@candle.pha.pa.us> writes:
> I have added this item to TODO:
> * Consider use of open/fctl(O_DIRECT) to minimize OS caching
Why exactly would we wish to minimize OS caching?
In my mind, Postgres has always relied heavily on the existence of a
layer of kernel caching. Disabling that will hurt far more than help.
regards, tom lane