Re: quad or dual core Intel CPUs

Dan Harris wrote:
> Arjen van der Meijden wrote:
>
>> But be aware that there can be substantial and unexpected differences
>> on this relatively new platform due to simply changing the OS, like we
>> saw when going from linux 2.6.15 to 2.6.18, as you can see here:
>> http://tweakers.net/reviews/657/2
>
> Having upgraded to 2.6.18 fairly recently, I am *very* interested in
> what caused the throughput to drop in 2.6.18?  I haven't done any
> benchmarking on my system to know if it affected my usage pattern
> negatively, but I am curious if anyone knows why this happened?

I think you're reading the results backwards. PostgreSQL throughput
increased, not decreased, by the upgrade.

--
   Heikki Linnakangas
   EnterpriseDB   http://www.enterprisedb.com