FreeBSD, Centos and ZFS - SOLVED

[Adrian Chadd]

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.



-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
> _______________________________________________
> freebsd-questions at freebsd.org mailing list
> http://lists.freebsd.org/mailman/listinfo/freebsd-questions
> To unsubscribe, send any mail to "
> freebsd-questions-unsubscribe at freebsd.org"
>