Re: Is user-space AIO dead?

[Benjamin LaHaise]

On Wed, Jan 11, 2006 at 10:12:52AM -0800, Kenny Simpson wrote:
> If I want a transactional engine (like a database) that needs to persist to stable storage, is it
> still best to use a helper thread to do write/fsync or O_SYNC|O_DIRECT?

It all depends on which database engine you're using.  Getting Oracle 
tuned to the Linux AIO implementation took a few revisions, but what's 
out in the fields these days makes good use of aio to gain 10-15% on 
the usual large industry standard database benchmark.

		-ben
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