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

[Miroslav Lachman]

Mike Jakubik wrote:
> On 2012-10-12 05:21 PM, Adrian Chadd wrote:
>> On 12 October 2012 11:10, Miroslav Lachman <000.fbsd at quip.cz> wrote:
>>> I don't like comparing Release Candidates without any details about
>>> config,
>>> but the fact that DF 3.2 is much better than DF 3.0 is interesting.
>>> And they
>>> are very close to performance of Scientific Linux 6.2.
>>
>> Hey cool! And FreeBSD-9.1 is on there and doing worse than Linux and
>> Dragonfly BSD. I wonder why that is.
>>
>> Lemme cross post this a little to see what people think.
>>
>>>
>>> http://lists.dragonflybsd.org/pipermail/users/2012-October/017536.html
>>>
>>> Graphs are available as PDF attachments
>>>
>>>
>>> http://lists.dragonflybsd.org/pipermail/users/attachments/20121010/7996ff88/attachment-0002.pdf
>>>
>>>
>>> http://lists.dragonflybsd.org/pipermail/users/attachments/20121010/7996ff88/attachment-0003.pdf
>>>
>
> 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.

http://www.phoronix.com/scan.php?page=article&item=dragonfly_linux_32

Miroslav Lachman