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тАО06-12-2003 03:42 AM
тАО06-12-2003 03:42 AM
We have installed Windows 2000 Advanced Server with SP3 on a Proliant DL580
with 4 CPUs.
Everything is working OK... However in task manager and system information
the server shows 8 CPUs...
Any help/suggestion is highly appreciated.
Thanks in advance for your help,
Kind Regards,
Rui.
Solved! Go to Solution.
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тАО06-12-2003 04:47 AM
тАО06-12-2003 04:47 AM
SolutionJeff
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тАО06-12-2003 06:21 AM
тАО06-12-2003 06:21 AM
Re: Wrong number of CPUs appears in task manager and system information
We recently installed a Proliant ML370 G3 with Windows 2000 SP2.
We have 2 2.8GHz processors, but Task Manager, Performance Monitor, and System Information show 4.
Also SI shows the 4 procs running at nearly 38000MHz!
Everthing seems to be working fine here as well, but we would like to get to the bottom of this.
Thanks in advance for any assistance,
Bryce Dennison
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тАО06-12-2003 06:50 AM
тАО06-12-2003 06:50 AM
Re: Wrong number of CPUs appears in task manager and system information
I think I found the answer further down in the forum:
"May 26, 2003 10:32 AM GMT
--------------------------------------------------------------------------------
Please check the following links to know more about the Hyperthreading:
As per Intel, W2K does not (yet) support Hyperthreading, i.e. W2K does not know that the extra processors are not "real". Intel recommends disabling Hyperthreading when using W2K. So far, only Win XP supports Hyperthreading:
http://www.intel.com/support/platform/ht/os.htm
This one is from Microsoft:
http://www.microsoft.com/windows2000/docs/hyperthreading.doc"
I'll try this later today and let you know.
Bryce Dennison.
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тАО06-15-2003 10:35 PM
тАО06-15-2003 10:35 PM
Re: Wrong number of CPUs appears in task manager and system information
This can be corrected by going in the BIOS settings. Under the Advanced features just highlight the Hyperthreading and then select disable. This will show the correct No of CPUs.
Regards,
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тАО06-16-2003 04:39 AM
тАО06-16-2003 04:39 AM
Re: Wrong number of CPUs appears in task manager and system information
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тАО07-11-2003 05:50 PM
тАО07-11-2003 05:50 PM
Re: Wrong number of CPUs appears in task manager and system information
Since the release of Windows 2000, it has supported HT. Now there are two different levels of HT support (mainly for licensing).
Hyper-Threading-Aware - Can distinguish between a logical and physical processor
Not Hyper-Threading-Aware - Can not distinguish between a logical and physical processor.
Also the link from Intel that states you should disable HT is for the Pent 4 processors on Desktop systems not the Pent 4 Xeon Processors you find in Servers. The reason for this is on the Pent 4 processors HT is only supported on 3ghz systems and above and if you have it enabled on a 2.8ghz system you could run into problems because the hardware does not support it.
http://www.microsoft.com/whdc/hwdev/platform/proc/ht-windows.mspx
http://www.microsoft.com/windows2000/server/evaluation/performance/reports/hyperthread.asp
http://www.intel.com/eBusiness/products/server/processor/xeon/wp020901_sum.htm?iid=ipp_srvr_proc_xeon+prodi_ht&