Since this is a hot topic, I have posted the preliminary version of our WP on Hyper-Threading at the following link. Hopefully the graphics are more readable than the Citrix paper;-) http://www.tmurgent.com/images/WP_HyperThread.pdf While we didn't look to max sustained users, we expect an average of 15% performance improvement when you enable HT in a TS environment with 2003. tim Timothy R. Mangan Founder TMurgent Technologies tmangan@xxxxxxxxxxxx www.tmurgent.com +1 781-492-0403 -----Original Message----- From: thin-bounce@xxxxxxxxxxxxx [mailto:thin-bounce@xxxxxxxxxxxxx]On Behalf Of Jim Kenzig Sent: Friday, June 20, 2003 11:36 AM To: thin@xxxxxxxxxxxxx Subject: [THIN] Re: Hyper-Threading (again!) Ya, the bottom line of this doc is if you have 4 processors and turn it on there isn't much worth to it. With 2 processors you get about 11% performance increase. But looking at the charts it didn't seem very significant in any one area and appeared that quite a bit less memory was used if hyperthreading was turned off. JK -----Original Message----- From: thin-bounce@xxxxxxxxxxxxx [mailto:thin-bounce@xxxxxxxxxxxxx]On Behalf Of Angus Macdonald Sent: Friday, June 20, 2003 11:24 AM To: thin@xxxxxxxxxxxxx Subject: [THIN] Re: Hyper-Threading (again!) Is it just me or are the graphs on that page some of the least informative around? -----Original Message----- From: Jim Kenzig [mailto:jimkenz@xxxxxxxxxxxxxx] Sent: 20 June 2003 16:14 To: thin@xxxxxxxxxxxxx Subject: [THIN] Re: Hyper-Threading (again!) I also found this recent doc from Citrix site: CTX101880 How Hyper-Threading Affects User Capacity of Metaframe XP Servers http://support.citrix.com/kb/entry!default.jspa?categoryID=118&entryID=2468&; fromSearchPage=true (link will probably wrap) JK -----Original Message----- From: thin-bounce@xxxxxxxxxxxxx [mailto:thin-bounce@xxxxxxxxxxxxx]On Behalf Of Jim Kenzig Sent: Friday, June 20, 2003 10:17 AM To: thin@xxxxxxxxxxxxx Subject: [THIN] Re: Hyper-Threading (again!) Hmm found this document on Hyperthreading support from MS http://www.microsoft.com/whdc/hwdev/platform/proc/HT-Windows.mspx In it states: All versions of the Windows 2000 operating system are fully compliant with HT and should run without error on HT-enabled systems. However, neither Windows 2000 nor any of its service packs support the identification of HT processors. The type of modifications that are required for HT processor identification and support are not typically supported in a service pack. There are no plans to introduce this support in any future Windows 2000 service pack. As a result, Windows 2000 treats each logical processor as if it were an individual physical processor. The operating system attempts to start each logical processor in the sequence in which it was listed by the BIOS until the number of processors that have been started is equal to the processor license limit for that version of the operating system. Table 1 shows the processor limits for Windows 2000 versions. JK ******************************************************** This weeks sponsor - RTOSoft TScale Complaints about applications response time - DO SOMETHING ABOUT IT! TScale 2.0 improves applications response time and increases terminal server capacity. Really get MORE from your existing servers! Free eval: http://www.rtosoft.com/enter.asp?id=130 ********************************************************** Useful Thin Client Computing Links are available at: http://thethin.net/links.cfm For Archives, to Unsubscribe, Subscribe or set Digest or Vacation mode use the below link: http://thethin.net/citrixlist.cfm ******************************************************** This weeks sponsor - RTOSoft TScale Complaints about applications response time - DO SOMETHING ABOUT IT! TScale 2.0 improves applications response time and increases terminal server capacity. Really get MORE from your existing servers! Free eval: http://www.rtosoft.com/enter.asp?id=130 ********************************************************** Useful Thin Client Computing Links are available at: http://thethin.net/links.cfm For Archives, to Unsubscribe, Subscribe or set Digest or Vacation mode use the below link: http://thethin.net/citrixlist.cfm