FreeBSD, Centos and ZFS - SOLVED

[aurfalien]

On Oct 22, 2013, at 6:59 PM, Warren Block wrote:

> On Tue, 22 Oct 2013, aurfalien 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.
> 
> Enable them both and also enable powerd on FreeBSD in /etc/rc.conf so it can take advantage of the first.
> 
>> In fact, FreeBSD is showing a tad better now then CentOS.  I have files if any one is interested in viewing.
> 
> With Turbo mode on, it may go even faster.

Yep, confirmed, got about ~1000 IOPS more by doing this (via fio).

So on to the other pots regarding tuning powerd.

- aurf