FreeBSD, Centos and ZFS - SOLVED
adrian at freebsd.org
Wed Oct 23 02:55:48 UTC 2013
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.
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
> >> 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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