Dragonfly and Hyperthreading....

[EM1897 at aol.com]

In a message dated 2/21/2005 9:05:52 PM Eastern Standard Time, Dan Eicher <dan at xxxxxxxxxxxxxx> writes:

>On Mon, 21 Feb 2005 18:57:59 -0500, EM1897 wrote:
>
>> In a message dated 2/21/05 6:27:25 PM Eastern Standard Time, 
>> dillon at xxxxxxxxxxxxxxxxxxxx writes:
>> :Tyan is on my blacklist, ever since having to recall 38 systems from
>> :throughout the world because they spontanously rebooted due to a
>> :power design flaw...Again, it all SOUNDS great, but until I get it 
>> :on the bench its just a lot of words.
>> :
>> :On another note, what is dragonfly's status regarding Opterons? 
>> 
>>>    Nothing specific.  It should work similarly to other machines.
>>>    That is, it comes down to hardware support for the MB more then
>>>    the particular cpu.
>> 
>> Ok. Let me word it differently. So what are the chances of a 
>> randomly purchased opteron system working painlessly with 
>> Dragonfly?
>
>I've been testing DragonFly on a dual 242 opteron Via K8T Master2-FAR mobo
>and everything Just Works. The only issue I've seen is when doing a
>buildworld it doesn't utilize the whole power of the cpus, it pretty much
>just tops out at 146% according to "time make -j 3 buildworld".
>Buildkernel can get it up to 169.8% but the same tests on FreeBSD 5.3 and
>current would go ~196%.
>
>Haven't really done too much other than buildworld and buildkernel time
>tests with different make -j values to see how good SMP is working...can't
>really complain about 22 min buildworld times though.
>
And how long does a make buildworld take on a 3.4Ghz p4 with
the same periperals? I just priced out some opteron configs.
What every happened to price/performance? They are twice the
price.