Re: direct io on linux

[Andi Kleen <ak@xxxxxxx>]

On Wed, Oct 02, 2002 at 05:02:04PM +0200, Gabor Forgacs wrote:
> I use xfs/O_DIRECT under irix, i am just wondering is the direct io is a 
> viable  solution under linux too. Generally what is the fastest disk access 
> method under linux with raid 0 ? I should read sequentialy 9-12 mb files. 

O_DIRECT doesn't do any readahead to keep the disk streaming so unless 
you're doing it yourself (e.g. by using multiple threads or aio) normal IO
will be likely faster.

-Andi