On Sun, Aug 07, 2005 at 01:04:51PM +0300, Michael Ben-Nes wrote: > Hello > > Im using postgres 8.0.1 on Debian Sarge with 2 XEON 2.4 HT. > > doing cat /etc/cpuinfo shows that linux sees 4 cpu ( the HT effect ). > > I noticed that when im runing a big query only one of the CPUs become > loaded. > > Is it normal behavior ? am i missing something ?
Yep, PostgreSQL uses a single backend for each client, so if you want to use all four processors, you need to be running four queries simultaneously... Have a nice day, -- Martijn van Oosterhout <kleptog@svana.org> http://svana.org/kleptog/ > Patent. n. Genius is 5% inspiration and 95% perspiration. A patent is a > tool for doing 5% of the work and then sitting around waiting for someone > else to do the other 95% so you can sue them.
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