Confirmation of AIO

[Maxim Dounin]

Hello!

On Sun, Oct 30, 2011 at 02:28:30PM +0000, iberkner at gmail.com wrote:

> I read that you don't get the file cache, so under what specific 
> circumstances in linux would it be beneficial to use aio (if 
> any)?

Using AIO under Linux would be beneficial if your working set is 
big compared to memory available and as a result filesystem cache 
doesn't improve things much.  Better disk concurrency may 
outweigh filesystem cache in such cases.

Maxim Dounin