[THIN] Re: OT?: HyperThreading
- From: "Henske, Jennifer" <Jennifer.Henske@xxxxxxxxxxxxx>
- To: "'thin@xxxxxxxxxxxxx'" <thin@xxxxxxxxxxxxx>
- Date: Tue, 3 Jun 2003 08:29:51 -0500
I just put 4 HP 380s (dual 2.8ghz with 4gb of RAM) in production with hyper
threading enabled. Running a pretty specialized app suite called GIM2000
that is very RAM intensive. Currently we are in pilot and are planning a
load test for later this week. I'll let you know if we have any issues.
Jennifer Henske
A.G. Edwards Technology Group
-----Original Message-----
From: Ron Oglesby [mailto:roglesby@xxxxxxxxxxxx]
Sent: Tuesday, June 03, 2003 8:07 AM
To: thin@xxxxxxxxxxxxx
Subject: [THIN] Re: OT?: HyperThreading
The only thing I have seen on paper about this has been from HP in their TS
testing of the 380's. Of course the problem with their testing is that the
apps used not mirror 95% of the environments out there.=20
So their bottleneck (tuned for the testing mind you) always turns out to be
processor. I mean they run their apps and write their scripts in such a way
that they get 120-150 users per box........ anyway. </RANT>
That said they SAY that the processor queue and context switching etc become
almost insignificant.... that I really don't believe. But their test did
show it all with hyperthreading enabled.
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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