[Mono-list] Threading and IO problem

Will Murnane will.murnane at gmail.com
Thu Mar 6 16:09:31 EST 2008

On Thu, Mar 6, 2008 at 3:46 PM, Yanko Hernández Álvarez
<yhdezalvarez at gmail.com> wrote:
>  Seeing the stats, it seems I overestimated the CPU use.  It's even
>  lower than I thought (60..70% instead of 70..80%)
>  It is a Dell PowerEdge 2900 (2 xeon 5050, dual core, each core hyperthreaded)
That's only 4 real execution units.  You're getting the extra smidgeon
of performance that HT gives in the best case, but there just aren't 8
cores there.  Getting real quad core chips (Harpertown) will likely
mean you can get to full 8 core usage.

If you turn off HT in the BIOS (if such a thing is possible on a Dell)
you would probably see 100% utilization.  But you're getting what I'd
be inclined to call 120% right now, so unless you want to confirm that
this is indeed the case, I'd just leave it alone.


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