new DragonFly-3.2 scheduler and PostgreSQL comparision with FreeBSD 9.1-RC1

Mike Jakubik mike.jakubik at
Tue Nov 20 23:28:01 UTC 2012

On 2012-11-20 04:56 PM, Miroslav Lachman wrote:
> Mike Jakubik wrote:

>> These numbers show very significant improvements. Any
>> possibility/interests in porting this scheduler to FreeBSD or this 
>> too
>> much work? I know many have and still complain about our current 
>> scheduler.
> Just for the record. There is Phoronix benchmark comparing DF 3.0.3,
> 3.2.1 and Ubuntu 12.10 showing that scheduler tweaks was good for
> pgbench, but not so significant for other tasks.

Indeed it seems like the performance gains were targeted at PostgreSQL, 
though performance has not dropped in any other areas according to this 

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