ULE/SCHED_SMP diff for 7.0

[youshi10 at u.washington.edu]

On Tue, 17 Jul 2007, Claus Guttesen wrote:

>> > sched_ule:
>> >
>> > -j 3 buildkernel: 13:23
>> > -j 4 buildkernel: 12:38
>> > -j 5 buildkernel: 12:41
>> > -j 6 buildkernel: 12:47
>> >
>> > sched_4bsd:
>> > -j 3 buildkernel: 11:43
>> > -j 4 buildkernel: 12:02
>> >
>> > So sched_ule seems to handle more processes slightly better than 4bsd
>> > albeit it does it slower. ule's sweet spot is -j 4 and 4bsd is -j 3.
>> >
>> 
>> 4bsd vs ULE
>> 
>> -j 3 buildkernel: 11:43 vs -j 3 buildkernel: 13:23
>> 
>> -j 4 buildkernel: 12:02 vs -j 4 buildkernel: 12:38
>> 
>> 
>> ULE is always slower?
>
> In my case yes.
>
> -- 
> regards
> Claus
>
> When lenity and cruelty play for a kingdom,
> the gentlest gamester is the soonest winner.
>
> Shakespeare

Sorry to say, but last year's Xeons were very lackluster in terms of capability/performance, and there were rumors flying around that the Conroes (desktop chips) fared better than the 1st gen Woodcrest (?) chips :(..

That's changed in the later Xeons though =\..

-Garrett