On Thu, Apr 17, 2008 at 12:58 AM, Greg Smith <[EMAIL PROTECTED]> wrote: > So in the case of this simple benchmark, I see an enormous performance > regression from the newest Linux kernel compared to a much older one.
This has been discussed recently on linux-kernel. It's definitely a regression. Instead of getting a nice, flat overload behavior when the # of busy threads exceeds the number of CPUs, you get the declining performance you noted. Poor PostgreSQL scaling on Linux 2.6.25-rc5 (vs 2.6.22) http://marc.info/?l=linux-kernel&m=120521826111587&w=2 -jwb -- Sent via pgsql-performance mailing list (pgsql-performance@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
