Re: quad or dual core Intel CPUs - Mailing list pgsql-performance

From Dan Harris
Subject Re: quad or dual core Intel CPUs
Date
Msg-id 45D239D3.5020501@drivefaster.net
Whole thread Raw
In response to Re: quad or dual core Intel CPUs  (Arjen van der Meijden <acmmailing@tweakers.net>)
Responses Re: quad or dual core Intel CPUs  ("Guillaume Smet" <guillaume.smet@gmail.com>)
Re: quad or dual core Intel CPUs  (Heikki Linnakangas <heikki@enterprisedb.com>)
List pgsql-performance
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?

-Dan

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