Hi,
I have installed a Windows 2000 server on a machine with an Intel Xeon 2,8
Ghz/2Mb , 2 Gb RAM, PERC 4/SC single channel RAID card and 2 x 146GB SCSI
Ultra320 (10,000rpm) disks. Initially the Hyper Threading was enabled on this
machine; after 2 months, I have installed a SCADA software that does NOT
support Hyper Threading, so I have disabled it; on the same PC, I have
developped 2 VB6 applications that before I disabled the Hyper Threading were
working properly, but now they seem to work very slowly.
Someone knows if there are some settings to be made after disabling of HT on
Windows 2000?

Regards

GINO

In Device Manager change HAL from multi to uni processor. Select the
SAME type of hal (MPS for MPS, ACPI for ACPI...) or else the computer
might not boot!

John

Gino Rondina wrote:

> Hi,
> I have installed a Windows 2000 server on a machine with an Intel Xeon 2,8
> Ghz/2Mb , 2 Gb RAM, PERC 4/SC single channel RAID card and 2 x 146GB SCSI
> Ultra320 (10,000rpm) disks. Initially the Hyper Threading was enabled on this
> machine; after 2 months, I have installed a SCADA software that does NOT
> support Hyper Threading, so I have disabled it; on the same PC, I have
> developped 2 VB6 applications that before I disabled the Hyper Threading were
> working properly, but now they seem to work very slowly.
> Someone knows if there are some settings to be made after disabling of HT on
> Windows 2000?
>
> Regards
>
> GINO

Thank you, john; What is HAL? is it Hardware Abstraction Layer? Where do I
have to
change it? In Device Manager under Computer? I prefer to be sure before I
modify this parameter.

"John John" wrote:

> In Device Manager change HAL from multi to uni processor. Select the
> SAME type of hal (MPS for MPS, ACPI for ACPI...) or else the computer
> might not boot!
>
> John
>
> Gino Rondina wrote:
>
> > Hi,
> > I have installed a Windows 2000 server on a machine with an Intel Xeon 2,8
> > Ghz/2Mb , 2 Gb RAM, PERC 4/SC single channel RAID card and 2 x 146GB SCSI
> > Ultra320 (10,000rpm) disks. Initially the Hyper Threading was enabled on this
> > machine; after 2 months, I have installed a SCADA software that does NOT
> > support Hyper Threading, so I have disabled it; on the same PC, I have
> > developped 2 VB6 applications that before I disabled the Hyper Threading were
> > working properly, but now they seem to work very slowly.
> > Someone knows if there are some settings to be made after disabling of HT on
> > Windows 2000?
> >
> > Regards
> >
> > GINO
>
>

Thank you John; HAL is for Hardware Abstraction Layer? What is it? How can I
modify this parameter? Do I have to update the driver under the "Computer"
item in "Device Manager"? Sorry for all these questions but I prefer to be
sure before changing this parameter.

"John John" wrote:

> In Device Manager change HAL from multi to uni processor. Select the
> SAME type of hal (MPS for MPS, ACPI for ACPI...) or else the computer
> might not boot!
>
> John
>
> Gino Rondina wrote:
>
> > Hi,
> > I have installed a Windows 2000 server on a machine with an Intel Xeon 2,8
> > Ghz/2Mb , 2 Gb RAM, PERC 4/SC single channel RAID card and 2 x 146GB SCSI
> > Ultra320 (10,000rpm) disks. Initially the Hyper Threading was enabled on this
> > machine; after 2 months, I have installed a SCADA software that does NOT
> > support Hyper Threading, so I have disabled it; on the same PC, I have
> > developped 2 VB6 applications that before I disabled the Hyper Threading were
> > working properly, but now they seem to work very slowly.
> > Someone knows if there are some settings to be made after disabling of HT on
> > Windows 2000?
> >
> > Regards
> >
> > GINO
>
>

You got it. See here for more information:

HOW TO: Add Support for Multiple Processors in Windows 2000
http://support.microsoft.com/default...b;EN-US;234558

Background information only:
Cannot Select MPS Uniprocessor or ACPI Uniprocessor HAL
http://support.microsoft.com/default...b;EN-US;811366

John

Gino Rondina wrote:

> Thank you, john; What is HAL? is it Hardware Abstraction Layer? Where do I
> have to
> change it? In Device Manager under Computer? I prefer to be sure before I
> modify this parameter.
>
> "John John" wrote:
>
>
>>In Device Manager change HAL from multi to uni processor. Select the
>>SAME type of hal (MPS for MPS, ACPI for ACPI...) or else the computer
>>might not boot!
>>
>>John
>>
>>Gino Rondina wrote:
>>
>>
>>>Hi,
>>>I have installed a Windows 2000 server on a machine with an Intel Xeon 2,8
>>>Ghz/2Mb , 2 Gb RAM, PERC 4/SC single channel RAID card and 2 x 146GB SCSI
>>>Ultra320 (10,000rpm) disks. Initially the Hyper Threading was enabled on this
>>>machine; after 2 months, I have installed a SCADA software that does NOT
>>>support Hyper Threading, so I have disabled it; on the same PC, I have
>>>developped 2 VB6 applications that before I disabled the Hyper Threading were
>>>working properly, but now they seem to work very slowly.
>>>Someone knows if there are some settings to be made after disabling of HT on
>>>Windows 2000?
>>>
>>>Regards
>>>
>>>GINO
>>
>>