[THIN] Re: OT?: HyperThreading
- From: "Tim Mangan" <tmangan@xxxxxxxxxxxx>
- To: <thin@xxxxxxxxxxxxx>
- Date: Tue, 3 Jun 2003 16:24:16 -0400
I interpreted that to mean server forms of 2000 also. From the testing I
have done I doubt that anything terribly wrong happens because of
HyperThreading -- it's just a question of what is more efficient for how you
use the server. Here I am not talking about peak load, but about average
response time.
It's possible I might drop back to the 2000 server to run some tests
there -- I don't know yet.
tim
-----Original Message-----
From: thin-bounce@xxxxxxxxxxxxx [mailto:thin-bounce@xxxxxxxxxxxxx]On
Behalf Of Brian Murphy
Sent: Tuesday, June 03, 2003 3:11 PM
To: 'thin@xxxxxxxxxxxxx'
Subject: [THIN] Re: OT?: HyperThreading
This article specifies "desktops". Did you find anything specific to
"server"?
Microsoft* Windows* Operating System Desktop Based PCs
I know the article references Windows 2000 (All Versions) but seems to be
indicating P4 based desktop machines.
I would be interested to see if there are any known issues with the Xeon
processor based server models and Citrix Metaframe (Windows 2000 Server).
-Murphy
-----Original Message-----
From: Tim Mangan [mailto:tmangan@xxxxxxxxxxxx]
Sent: Tuesday, June 03, 2003 8:32 AM
To: thin@xxxxxxxxxxxxx
Subject: [THIN] Re: OT?: HyperThreading
Ron,
My bad - sorry. http://www.intel.com/support/platform/ht/os.htm
So far my testing indicates that lightly loaded servers perform better with
it turned off, heavily loaded servers with it turned on. The OS gets fooled
into loading up logical processors on the same physical processor sometimes.
When I'm done I'll be getting this written up with the details.
If you have a handy link to the HP docs, please send. I'll search for it if
you don't.
tim
-----Original Message-----
From: thin-bounce@xxxxxxxxxxxxx [mailto:thin-bounce@xxxxxxxxxxxxx]On
Behalf Of Ron Oglesby
Sent: Tuesday, June 03, 2003 9:08 AM
To: thin@xxxxxxxxxxxxx
Subject: [THIN] Re: OT?: HyperThreading
Hey Tim, that link goes no where.
Ron Oglesby
Senior Technical Architect
=20
RapidApp
Office 312.372.7188
Mobile 815.325.7618
email roglesby@xxxxxxxxxxxx
=20
-----Original Message-----
From: Tim Mangan [mailto:tmangan@xxxxxxxxxxxx]=20
Sent: Tuesday, June 03, 2003 5:54 AM
To: Thin@Freelists. Org
Subject: [THIN] OT?: HyperThreading
> I know we had a discussion on this a while back. Someone indicated M$
> folks were recommending disabling it in servers but didn't say why.
Ran
> across this link over the weekend. Basically, Intel suggests
disabling
> HyperThreading on all WIn2K, NT, and prior operating systems. =20 =20
> http://www.intel.com/support/platform/ht.os.htm
>=20
> I'm running tests against Server 2003/TS now. I suspect you may want
to
> disable it on 2003, depending on how you use the system. Nothing bad
> happens, but performance will be better in some cases with it turned
off,
> some cases with it on. Has anyone seen anything written up about
this?
>=20
> Timothy R. Mangan
> Founder TMurgent Technologies
> tmangan@xxxxxxxxxxxx
> www.tmurgent.com
> +1 781-492-0403
>=20
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