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 <br...@momjian.us> http://momjian.us EnterpriseDB http://enterprisedb.com + It's impossible for everything to be true. + -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
