Re: O_DIRECT in freebsd - Mailing list pgsql-hackers

From Doug McNaught
Subject Re: O_DIRECT in freebsd
Date
Msg-id m3u15snlal.fsf@varsoon.wireboard.com
Whole thread Raw
In response to Re: O_DIRECT in freebsd  ("scott.marlowe" <scott.marlowe@ihs.com>)
List pgsql-hackers
"scott.marlowe" <scott.marlowe@ihs.com> writes:

> I would think the biggest savings could come from using directIO for 
> vacuuming, so it doesn't cause the kernel to flush buffers.
> 
> Would that be just as hard to implement?  

Two words: "cache coherency".

-Doug


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