Hyperthreading causing issue

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javed74@gmail.com - 08 Dec 2005 21:13 GMT

Hi Guys,

We just deployed our asp.net application on Xeon dual processor with
Hyperthreading turned on. OS Windows 2003 (Web Edition) .NET Framework
1.1

While stress testing with 1 wp, we get better throughput/RPS then with
enabling webGarden - 4 wps. Multiple worker processors with
Hyperthreading turned on gives approx. half the performance compared to
1 wp. As per my understanding results should be vice-versa.

Anybody having any information please let me know.

Thanks in advance.

-JA

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Alvin Bruney - ASP.NET MVP - 09 Dec 2005 17:09 GMT

These issues highly depend on the application and its scope of work. That
said these results don't seem out of the ordinary to me.

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Regards,
Alvin Bruney [MVP ASP.NET]

[Shameless Author plug]
The Microsoft Office Web Components Black Book with .NET
Now Available @ www.lulu.com/owc
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-------------------------------------------------------

> Hi Guys,
>
[quoted text clipped - 12 lines]
>
> -JA

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CJ - 10 Dec 2005 13:52 GMT

Are you tweaking the machine.config settings at all? There is a good
article here that goes over how to tune the threadpool.

http://www.microsoft.com/downloads/details.aspx?FamilyId=8A2E454D-F30E-4E72-B531
-75384A0F1C47&displaylang=en

I'm running a setup similar to yours and im not noticing the same
problem.

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Hyperthreading causing issue

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