[THIN] Re: HP Proliant Server BIOS setting for CPU performanc e.....
- From: "Evan Mann" <emann@xxxxxxxxxxxxxxxxxxxxx>
- To: <thin@xxxxxxxxxxxxx>
- Date: Wed, 30 Nov 2005 10:30:11 -0500
Somewhat related/unrelated
We did some tests on our DB servers, which are 2003 SP1 with SQL Server
2000 SP3a. We ran a large DTS query which utilizies views as well as
direct table querieis. We did tis with hyperthreading on and off.
Off: 16 minutes
On: 28 minutes
Server is a Dell PE2850, dual Xeon 3.6ghz processors.
We ended up doing this, because we read an article last week that
indicates that Hyperthreading will generally hurt you more then helping
you most situations at the current time. They specifically mentionedt
Citrix, SQL Server, and Exchange in the article.
________________________________
From: thin-bounce@xxxxxxxxxxxxx [mailto:thin-bounce@xxxxxxxxxxxxx] On
Behalf Of Tim Mangan
Sent: Wednesday, November 30, 2005 10:23 AM
To: thin@xxxxxxxxxxxxx
Subject: [THIN] Re: HP Proliant Server BIOS setting for CPU performanc
e.....
See whitepaper http://www.tmurgent.com/WhitePapers/WP_HyperThreading.pdf
If you don't have a problem, then great.
________________________________
From: thin-bounce@xxxxxxxxxxxxx [mailto:thin-bounce@xxxxxxxxxxxxx] On
Behalf Of Schneider, Chad M
Sent: Wednesday, November 30, 2005 9:52 AM
To: thin@xxxxxxxxxxxxx
Subject: [THIN] Re: HP Proliant Server BIOS setting for CPU performanc
e.....
Huh...been doing it for years....
________________________________
From: thin-bounce@xxxxxxxxxxxxx [mailto:thin-bounce@xxxxxxxxxxxxx] On
Behalf Of Tim Mangan
Sent: Wednesday, November 30, 2005 8:01 AM
To: thin@xxxxxxxxxxxxx
Subject: [THIN] Re: HP Proliant Server BIOS setting for CPU performanc
e.....
You don't want to use Hyperthreading on 2000 - there are some issues on
that OS. XP/2003 or above.
As to the mem/IO switch - I have to believe that memory is the best
setting. I don't know what the bios setting actually does, but
presumably it is doing something like playing with device priorities at
the bus level.
tim
________________________________
From: thin-bounce@xxxxxxxxxxxxx [mailto:thin-bounce@xxxxxxxxxxxxx] On
Behalf Of Schneider, Chad M
Sent: Wednesday, November 30, 2005 8:39 AM
To: thin@xxxxxxxxxxxxx
Subject: [THIN] Re: HP Proliant Server BIOS setting for CPU performanc
e.....
I guess I have not noticed enough of an issue with hyperthreading, to
turn it off.
________________________________
From: thin-bounce@xxxxxxxxxxxxx [mailto:thin-bounce@xxxxxxxxxxxxx] On
Behalf Of M
Sent: Tuesday, November 29, 2005 3:25 PM
To: thin@xxxxxxxxxxxxx
Subject: [THIN] Re: HP Proliant Server BIOS setting for CPU
performance.....
Hello there,
I found the settings on our BL20Ps last year when i was testing
Hyperthreading on Windows 2000.
I was checking the performance of a 16 bit application and then another
server with our core apps on.
I was most disappointed when i noticed zero difference when comparing
with other identical servers (save the bios change).
We had around 30 users for testing per box
----- Original Message -----
From: Jeff Pitsch <mailto:jepitsch@xxxxxxxxx>
To: thin@xxxxxxxxxxxxx
Sent: Tuesday, November 29, 2005 5:08 PM
Subject: [THIN] Re: HP Proliant Server BIOS setting for CPU
performance.....
See that's what I was thinking. all the I/O from the sessions.
Mouse and keyboard in particular.
Jeff
On 11/29/05, Matthew Shrewsbury <MShrewsbury@xxxxxxxxxxxxxxx>
wrote:
Hmmm I/O is always the slowest so set it for best I/O. Of course
I know nothing on the subject but it is my best thought...
Matthew Shrewsbury, MCSE+Internet MCSE 2000 CCA Server+
Senior Network Administrator
-----Original Message-----
From: thin-bounce@xxxxxxxxxxxxx
[mailto:thin-bounce@xxxxxxxxxxxxx] On Behalf Of Jeff Pitsch
Sent: Tuesday, November 29, 2005 11:02 AM
To: thin@xxxxxxxxxxxxx
Subject: [THIN ] HP Proliant Server BIOS setting for CPU
performance.....
Ok, I just came across this in the BIOS settings when I went to
turn off hyperthreading. You can set the performance for the CPU to
'optimized for memory' or 'optimized for I/O'. It is defaulted to
'optimized for memory'. Anyone have any thoughts on this?
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