On Apr 7, 2011, at 1:13 AM, Greg Smith wrote: > On 04/05/2011 02:21 PM, Mischa Sandberg wrote: >> Came across the following in a paper from Oct 2010. Was wondering is this is >> old news I missed in this group. >> http://pdos.csail.mit.edu/papers/linux:osdi10.pdf >> about Linux optimization on multi-core CPU’s. > > Only a little old; > http://postgresql.1045698.n5.nabble.com/MIT-benchmarks-pgsql-multicore-up-to-48-performance-td3173545.html > shows most of the obvious comments to be made about it. There is more > detail explaining why the hand-waving done in the paper about increasing > NUM_LOCK_PARTITIONS is not a simple improvement at > http://postgresql.1045698.n5.nabble.com/Lock-partitions-td1952557.html
Given that when those tests were done 16 cores was a massive machine, it would probably be a good idea to run them again. If anyone is interested in doing that let me know; we have a 40 core machine that I could probably arrange access to. -- Jim C. Nasby, Database Architect j...@nasby.net 512.569.9461 (cell) http://jim.nasby.net -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
