Re: Status of AIO

[Dan Aloni <da-x@monatomic.org>]

On Mon, Mar 06, 2006 at 04:18:54PM -0500, Benjamin LaHaise wrote:
> On Mon, Mar 06, 2006 at 08:24:03AM +0200, Dan Aloni wrote:
> > Hello,
> > 
> > I'm trying to assert the status of AIO under the current version 
> > of Linux 2.6. However by searching I wasn't able to find any 
> > indication about it's current state. Is there anyone using it
> > under a production environment?
> 
> For O_DIRECT aio things are pretty stable (barring a patch to improve -EIO 
> handling).  The functionality is used by the various databases, so it gets 
> a fair amount of exercise.
> 
> > I'd like to know how complete it is and whether socket AIO is
> > adaquately supported.
> 
> Socket AIO is not supported yet, but it is useful to get user requests to 
> know there is demand for it.

Well, I've written a small test app to see if it works with network
sockets and apparently it did for that small test case (connect() 
with aio_read(), loop with aio_error(), and aio_return()). I thought 
perhaps the glibc implementation was running behind the scene, so I've 
checked to see if it a thread was created in the background and I 
there wasn't any thread. 

-- 
Dan Aloni
da-x@monatomic.org, da-x@colinux.org, da-x@gmx.net, dan@xiv.co.il