So after all the discussions and the reading all the docs seem to say that it will work with Windows 2000. Do most people turn if off for win2K or leave it on? Do people think it is a good practice to disable for Win2K systems? What about for win2003? Turn it on??? Thanks Malcolm -----Original Message----- From: thin-bounce@xxxxxxxxxxxxx [mailto:thin-bounce@xxxxxxxxxxxxx] On Behalf Of Nick Smith Sent: 01 October 2004 09:06 To: thin@xxxxxxxxxxxxx Subject: [THIN] Re: Hyperthreading I have similar, but I'm inclined to think that it's just Sage, as I've had the same happen on a non-HT processor. Sage is a pig, I hate it more and more. Nick -----Original Message----- From: Dogers [mailto:dogers@xxxxxxxxx] Sent: 30 September 2004 23:33 To: thin@xxxxxxxxxxxxx Subject: [THIN] Re: Hyperthreading On Thu, 30 Sep 2004 12:18:07 -0400, Bernd Harzog <bernd.harzog@xxxxxxxxxxx> wrote: > Well what we discovered is that when a process is running on one of the virtual CPU's (2 or 3) and goes rogue, it shuts down the whole server. So, if something uses 25% of CPU (all of CPU 2 or 3) doing this on a virtual CPU on Windows 2000 somehow clogs up the entire system. So, our recommendations were; 1) don't use hyperthreading on Windows 2000, and if you insist upon turning it on, don't use Affinity to assign any processes to the virtual CPU's (only assign processes to the physical ones). > > I would be interested in knowing if anyone else has seen anything like this. If you have, and you could share with the list that would be most useful. YES! This sounds exactly like what we get, but only on win2003! Specifically in Sage Line 50 - it has functions which chew up 25% of a CPU (cant remember right now which one though..!) and the whole server comes to its knees for all users until the functions are stopped. I want to try and disable HT to test and see if its that thats actually doing it, but its our sole server, so is a little difficult :( Andrew ******************************************************** This Weeks Sponsor RTO Software Do you know which applications are abusing your CPU and memory? Would you like to learn? -- Free for a limited time! 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