Sounds good. _____ From: thin-bounce@xxxxxxxxxxxxx [mailto:thin-bounce@xxxxxxxxxxxxx] On Behalf Of Joe Shonk Sent: Wednesday, November 30, 2005 10:13 AM To: thin@xxxxxxxxxxxxx Subject: [THIN] Re: HP Proliant Server BIOS setting for CPU performanc e..... Of course that quote doesn't specify which OS... W2k has some experimental code for HT, but it a general best practice to turn it off. For most situations on a W2k box you will break even. Some you could lose 5-15% in performance. With W2k3 you should turn it on. Joe _____ From: thin-bounce@xxxxxxxxxxxxx [mailto:thin-bounce@xxxxxxxxxxxxx] On Behalf Of Schneider, Chad M Sent: Wednesday, November 30, 2005 8:55 AM To: thin@xxxxxxxxxxxxx Subject: [THIN] Re: HP Proliant Server BIOS setting for CPU performanc e..... From that white paper? "It is in this real-world environment that leads us to weigh more heavily the results the results of "User Task" testing than that of the "CPU Intensive" applications. Thus we would recommend to customers that they enable Hyper-Threading on their servers, assuming licensing and upgrade issues do not exist. On average, we expect customers to experience an average of 15% (ranging at times from equal performance to 30%) improved performance in real-world situations when Hyper-Threading is enabled on their processors." _____ From: thin-bounce@xxxxxxxxxxxxx [mailto:thin-bounce@xxxxxxxxxxxxx] On Behalf Of Tim Mangan Sent: Wednesday, November 30, 2005 9:23 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 <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 <mailto: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 <mailto: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> [mailto:thin-bounce@xxxxxxxxxxxxx <mailto:thin-bounce@xxxxxxxxxxxxx> ] On Behalf Of Jeff Pitsch Sent: Tuesday, November 29, 2005 11:02 AM To: thin@xxxxxxxxxxxxx <mailto: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?