svn commit: r253002 - head

[Garrett Cooper]

On Jul 8, 2013, at 5:12 PM, Teske, Devin wrote:

> On Jul 7, 2013, at 2:15 PM, Alfred Perlstein wrote:
> 
>> On 7/7/13 2:01 PM, Garrett Cooper wrote:
>>> Why the magic number 12?
>> 
>> Numbers higher seem to result in worse performance as reported by some members of my team.
>> 
> 
> We've run as high as -j48 ... number of logical cpu's "times-two" (it was on a box with 24 logical CPUs).
> 
> We did buildworld in under 9 minutes. Beyond the "times-two" rule we saw a slow-down.
> 
> NOTE: I might also mention this was on RAID-1 SSD.

+1 as well, which is part of the reason why I questioned the performance recommendation, but that's beside the point. Thanks!