On Wed, Oct 12, 2005 at 03:07:23PM -0400, Emil Briggs wrote: > > where the number of padding locks is determined by how many lock > > structures fit within a 128 byte cache line. > > > > This isn't exactly elegant coding, but it provides a useful improvement > > on an 8-way SMP box when run on 8.0 base. OK, lets be brutal: this looks > > pretty darn stupid. But it does follow the CPU optimization handbook > > advice and I did see a noticeable improvement in performance and a > > reduction in context switching. > > > > I'm not in a position to try this again now on 8.1beta, but I'd welcome > > a performance test result from anybody that is. I'll supply a patch > > against 8.1beta for anyone wanting to test this. > > > > I don't have an 8 way available right now but I can run tests on a 4 way > Opteron if that would be helpful.
Likewise I can test on a 4 way opteron running open solaris. -- Jim C. Nasby, Sr. Engineering Consultant [EMAIL PROTECTED] Pervasive Software http://pervasive.com work: 512-231-6117 vcard: http://jim.nasby.net/pervasive.vcf cell: 512-569-9461 ---------------------------(end of broadcast)--------------------------- TIP 2: Don't 'kill -9' the postmaster
