Re: Proposal of tunable fix for scalability of 8.4 - Mailing list pgsql-performance

From Gregory Stark
Subject Re: Proposal of tunable fix for scalability of 8.4
Date
Msg-id 87iqm7f4gd.fsf@oxford.xeocode.com
Whole thread Raw
In response to Re: Proposal of tunable fix for scalability of 8.4  ("Jignesh K. Shah" <J.K.Shah@Sun.COM>)
Responses Re: Proposal of tunable fix for scalability of 8.4  (Scott Carey <scott@richrelevance.com>)
List pgsql-performance
"Jignesh K. Shah" <J.K.Shah@Sun.COM> writes:

> In next couple of weeks I plan to test the patch on a different x64 based
> system to do a sanity testing on lower number of cores and also try out other
> workloads ...

I'm actually more interested in the large number of cores but fewer processes
and lower max_connections. If you set max_connections to 64 and eliminate the
wait time you should, in theory, be able to get 100% cpu usage. It would be
very interesting to track down the contention which is preventing that.

--
  Gregory Stark
  EnterpriseDB          http://www.enterprisedb.com
  Ask me about EnterpriseDB's PostGIS support!

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