On Sun, Oct 17, 2004 at 09:39:33AM +0200, Manfred Spraul wrote: > Neil wrote: > > >. In any case, the "futex patch" > >uses the Linux 2.6 futex API to implement PostgreSQL spinlocks. > > > Has anyone tried to replace the whole lwlock implementation with > pthread_rwlock? At least for Linux with recent glibcs, pthread_rwlock is > implemented with futexes, i.e. we would get a fast lock handling without > os specific hacks. Perhaps other os contain user space pthread locks, too. > Attached is an old patch. I tested it on an uniprocessor system a year > ago and it didn't provide much difference, but perhaps the scalability > is better. You'll have to add -lpthread to the library list for linking.
I've heard that simply linking to the pthreads libraries, regardless of whether you're using them or not creates a significant overhead. Has anyone tried it for kicks? Mark ---------------------------(end of broadcast)--------------------------- TIP 7: don't forget to increase your free space map settings
