From what I hear they are seeing some processes go into black holes.=20 I mean Hyperthreading is really trying to take something that the OS does poorly (task scheduling) and make up for it at the hardware level.=20 By creating more logical processors to schedule and bounce the tasks around. OF course under some load they think tasks are being delayed due to some conflict between what the OS is sending and expecting and what is being done at the processor level. Remember Hyperthreading was an after thought with win2k it wasn't built for it. Ron Oglesby Senior Technical Architect =20 RapidApp Office 312.372.7188 Mobile 312.961.2380 email roglesby@xxxxxxxxxxxx =20 -----Original Message----- From: James Forbis [mailto:james@xxxxxxxx]=20 Sent: Friday, April 04, 2003 10:42 AM To: thin@xxxxxxxxxxxxx Subject: [THIN] Re: HyperThreading What bad happens when you have it turned on. I have about 7 or 8 Dell 2650's with Dual Xeon 2.8 and everything seems to run ok including SQL and exchange.=3D20 James Forbis -----Original Message----- From: Ron Oglesby [mailto:roglesby@xxxxxxxxxxxx]=3D20 Sent: Friday, April 04, 2003 11:15 AM To: thin@xxxxxxxxxxxxx Cc: Windows2000@xxxxxxxxxxxxx Subject: [THIN] Re: HyperThreading I have been using it some... BUT only for some testing. Didn't see a HUGE improvement from it on 2k, But haven't tried it yet on my 2003 boxes. On the other hand I wont put it in production on 2k simply because I have a LARGE customer with several MS reps on site, and they were running around disabling the hyper threading on all the 2k servers....... The funny thing is several models of HP and Dell are coming out of the box with it enabled. So if you open up task mgr on a Dual and see 4 procs you know what happened. Ron Oglesby Senior Technical Architect =3D3D20 RapidApp Office 312.372.7188 Mobile 312.961.2380 email roglesby@xxxxxxxxxxxx =3D3D20 -----Original Message----- From: Nick [mailto:nick@xxxxxxxxxxx]=3D3D20 Sent: Friday, April 04, 2003 10:14 AM To: thin@xxxxxxxxxxxxx Cc: Windows2000@xxxxxxxxxxxxx Subject: [THIN] HyperThreading Hi All, Does anyone have expirience of using HyperThreading technology on Windows2000? We have server based on Intel 7501 Dual Xeon chipset and the manufacturer turned on HyperThreading support in motherboard's BIOS though it isn't recommended using HyperThreading with Windows2000 on Intel's site! Does anyone have real expirience of using this technology on terminal servers and whether the real gain of productivity in the multiuser system turns out from it??? Best Regards, Nick mailto: nick@xxxxxxxxxxx ******************************************************** This Week's Sponsor - Emergent Online EOL's Universal Printer new Features include: Network Printing, Pagestreaming, 2400 DPI. No Client Software Required! http://www.go-eol.com/ ********************************************************** For Archives, to Unsubscribe, Subscribe or=3D3D20 set Digest or Vacation mode use the below link: http://thethin.net/citrixlist.cfm ******************************************************** This Week's Sponsor - Emergent Online EOL's Universal Printer new Features include: Network Printing, Pagestreaming, 2400 DPI. No Client Software Required! http://www.go-eol.com/ ********************************************************** For Archives, to Unsubscribe, Subscribe or=3D20 set Digest or Vacation mode use the below link: http://thethin.net/citrixlist.cfm ******************************************************** This Week's Sponsor - Emergent Online EOL's Universal Printer new Features include: Network Printing, Pagestreaming, 2400 DPI. No Client Software Required! http://www.go-eol.com/ ********************************************************** For Archives, to Unsubscribe, Subscribe or=20 set Digest or Vacation mode use the below link: http://thethin.net/citrixlist.cfm ******************************************************** This Week's Sponsor - Emergent Online EOL's Universal Printer new Features include: Network Printing, Pagestreaming, 2400 DPI. No Client Software Required! http://www.go-eol.com/ ********************************************************** For Archives, to Unsubscribe, Subscribe or set Digest or Vacation mode use the below link: http://thethin.net/citrixlist.cfm