FreeBSD, Centos and ZFS - SOLVED

[aurfalien]

On Oct 22, 2013, at 7:55 PM, Adrian Chadd wrote:

> Well, the 30% diff in performance due to those two intel CPU options means that somehow the scheduler and power management stuff in FreeBSD isn't playing with turbo boost / speedstep.
> 
> So yeah, figuring out why would be nice.

Ditto.

I never enabled powerd in FreeBSD9 or 10.  Unsure what the default position is.

In CentOS, I usually just set a diff BIOS feature as disabled or performance depending on what the options are.

On this server, it had acoustic/performance/balance as well as well as that CPU option which threw me off.

- aurf


> 
> 
> 
> -adrian
> 
> 
> 
> On 22 October 2013 16:40, aurfalien <aurfalien at gmail.com> wrote:
> 
> On Oct 20, 2013, at 9:04 AM, Mark Felder wrote:
> 
> > On Sat, Oct 19, 2013, at 14:31, aurfalien wrote:
> >>
> >> ZoL comes with a little interesting feature; arc2 compression, which does
> >> seem to enhance performance all around.  I disabled this in CentOS to
> >> level the playing field.
> >>
> >
> > FreeBSD 10 also has L2ARC compression
> >
> > http://svnweb.freebsd.org/base?view=revision&revision=251478
> 
> OMG, what a relief... the ~30% diff in performance was due to a BIOS setting, in particular this one;
> 
> Intel Turbo Boost Technology
> Enhanced Intel SpeedStep Tech
> 
> I disabled both.
> 
> In fact, FreeBSD is showing a tad better now then CentOS.  I have files if any one is interested in viewing.
> 
> Thanks to all for the rather overwhelming response :)
> 
> Actually it was good that hardly any one did as it forced me to debug the old fashioned way :)
> 
> - aurf
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