FreeBSD for serious performance? (was: Re: 9.x -- New Install -- serious partition misalignment)

[Eitan Adler]

On 8 December 2012 23:04, Alexander Kabaev <kabaev at gmail.com> wrote:
> On Sat, 08 Dec 2012 19:52:34 -0800
> "Ronald F. Guilmette" <rfg at tristatelogic.com> wrote:
>
> "analysis" skipped.
>
>>
>> As regards to the Native Command Queuing.... all I can say is "Crap!"
>> I wasn't aware...until now... that FreeBSD did not support that.  That
>> really is a rather entirely serious issue.  But I do think that the
>> performance hit from that would be dwarfed by the performance hit that
>> could be caused by the AF misaligment problem.

>From my memory, if you use ahci(4) instead of the old ata(4) you have
NCQ.  If you still use ata(4), you don't.



-- 
Eitan Adler