Alvaro Herrera wrote:
> On Sun, Jun 08, 2003 at 09:55:19PM +0200, Arjen van der Meijden wrote:
> > Afaik, most of such changes to the new kernel branch are independent of
> > whatever you run on top of it.
> > There are improvements in scheduling of processes and threads, there are
> > improvements on diskacessing algortims (I think) and such.
>
> However there are a couple of things that probably will need some
> effort from the PgSQL camp. Examples are the futexes thing (fast
> mostly-user-space mutexes that are said to be much faster than SysV
> semaphores) and async I/O.
Of course, we use SysV semaphores only to sleep on while waiting for an
event, like a lock release, so there isn't much win there --- we already
have user-space mutexes in shared memory on all platforms.
And on async, I don't think we have a sure benefit from that either.
--
Bruce Momjian | http://candle.pha.pa.us
pgman@candle.pha.pa.us | (610) 359-1001
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