Re: performance of O_DIRECT on md/lvm

[Andrea Arcangeli]

On Mon, Jan 21, 2002 at 12:35:52AM -0500, Benjamin LaHaise wrote:
> On Mon, Jan 21, 2002 at 02:12:24AM +0100, Andrea Arcangeli wrote:
> > yes, in short the API to allow the userspace to keep the I/O pipeline
> > full with a ring of user buffers is not available at the moment.
> 
> See http://www.kvack.org/~blah/aio/ .  Seems to work pretty nicely 
> for raw io.

of course async-io API is the right fix to keep the I/O pipeline always
full. Thanks for pointing it out.

Andrea