On Fri, Nov 2, 2012 at 09:59:08AM -0400, John Lumby wrote:
> Thanks for the mentioning this posting. Interesting.
> However, the OP describes an implementation based on libaio.
> Today what we have (for linux) is librt, which is quite different.
> It is arguable worse than libaio (well actually I am sure it is worse)
> since it is essentially just an encapsulation of using threads to do
> synchronous ios - you can look at it as making it easier to do what the
> application could do itself if it set up its own pthreads. The linux
> kernel does not know about it and so the CPU overhead of checking for
> completion is higher.
Well, good thing we didn't switch to using libaio, now that it is gone.
-- Bruce Momjian <bruce@momjian.us> http://momjian.us EnterpriseDB
http://enterprisedb.com
+ It's impossible for everything to be true. +
