Re: CPU Usage

[Chris Fitzsimons]

I have a very similar class using the registry to get the CPU usage. I have
been unsuccessful in getting it to work under Windows NT. Does anyone know
of an API or a way to hook into the Windows NT performance monitor to get
usage?



tjeshGibberish@mindspring.com (Tom Esh) wrote:
>Hmm... simpler than mine. I just fired up Regmon again - jeez I
>completely missed the StopStat on close before. Looks like maybe you
>found the bare minimum.
>
>On Thu, 9 Mar 2000 18:21:53 -0500, "David Crowell" <davidc@qtm.net>
>wrote:
>
>>Okay, I managed to find MSKB article Q174631
>>
>>It gives an example (in C) of how to do it, I managed to get it working
in
>>VB also.
>>
>>I re-wrote the class module to do the following:
>>
>>in Class_Inititalize:
>>RegOpenKey -- HKDD\PerfStats\StartStat
>>RegQueryKeyEx -- KERNEL\CPUUsage
>>RegCloseKey -- HKDD\PerfStats\StartStat
>>RegOpenKey -- HKDD\PerfStats\StatData
>>
>>in the Usage property get (call as many times as needed):
>>RegQueryKeyEx -- KERNEL\CPUUsage (from above open HKDD\PerfStats\StatData)
>>
>>in Class_Terminate:
>>RegCloseKey -- HKDD\PerfStats\StatData
>>RegOpenKey -- HKDD\PerfStats\StopStat
>>RegQueryKeyEx -- KERNEL\CPUUsage
>>RegCloseKey -- HKDD\PerfStats\StopStat
>>
>>
>>The StartSrv does not appear to be needed. I'm also not going to worry
>>about an NT version, as I don't have NT to test with.
>>
>>Anyway, thanks for the pointers.
>>
>>Dave
>>
>>
>>> For example gathering Win9x CPU usage the sequence is:
>>> 1) Open StatData, stash the key and leave it open 'till you're done
>>> monitoring or your app closes.
>>> 2) Open StartSrv and StopSrv
>>> 3) Query the value of StartSrv\KERNEL. (It's a throwaway, but
>>> apparently necessary.)
>>> 4) Open StartStat
>>> 5) Query the value of StartStat\KERNEL\CPUUsage. (Another throwaway.)
>>> 6) Close StartStat
>>> 7) Query the value of StopSrv\KERNEL. (throwaway).
>>> 8) Close StartSrv and StopSrv
>>>
>>> 9) Query StatData\KERNEL\CPUUsage as needed
>>> 10) Close StatData
>>newsgroup)
>>
>>
>
>
>-Tom
>(please post replies to the newsgroup)

[Garth Oatley]

Hi,

If we're talking NT then you can use the Performance Data Helper library.
An example of this can be found at

http://www.netfokus.dk/vbadmincode/w...tm#Performance

You can also connect to remote servers using this library.

--
Regards,

Garth Oatley

Take a look at http://www.netfokus.dk/vbadmincode
"Chris Fitzsimons" <fitzsic@byte400.demon.co.uk> wrote in message
news:38ccd673$1@news.devx.com...
>
> I have a very similar class using the registry to get the CPU usage. I
have
> been unsuccessful in getting it to work under Windows NT. Does anyone
know
> of an API or a way to hook into the Windows NT performance monitor to get
> usage?
>
>
>
> tjeshGibberish@mindspring.com (Tom Esh) wrote:
> >Hmm... simpler than mine. I just fired up Regmon again - jeez I
> >completely missed the StopStat on close before. Looks like maybe you
> >found the bare minimum.
> >
> >On Thu, 9 Mar 2000 18:21:53 -0500, "David Crowell" <davidc@qtm.net>
> >wrote:
> >
> >>Okay, I managed to find MSKB article Q174631
> >>
> >>It gives an example (in C) of how to do it, I managed to get it working
> in
> >>VB also.
> >>
> >>I re-wrote the class module to do the following:
> >>
> >>in Class_Inititalize:
> >>RegOpenKey -- HKDD\PerfStats\StartStat
> >>RegQueryKeyEx -- KERNEL\CPUUsage
> >>RegCloseKey -- HKDD\PerfStats\StartStat
> >>RegOpenKey -- HKDD\PerfStats\StatData
> >>
> >>in the Usage property get (call as many times as needed):
> >>RegQueryKeyEx -- KERNEL\CPUUsage (from above open
HKDD\PerfStats\StatData)
> >>
> >>in Class_Terminate:
> >>RegCloseKey -- HKDD\PerfStats\StatData
> >>RegOpenKey -- HKDD\PerfStats\StopStat
> >>RegQueryKeyEx -- KERNEL\CPUUsage
> >>RegCloseKey -- HKDD\PerfStats\StopStat
> >>
> >>
> >>The StartSrv does not appear to be needed. I'm also not going to worry
> >>about an NT version, as I don't have NT to test with.
> >>
> >>Anyway, thanks for the pointers.
> >>
> >>Dave
> >>
> >>
> >>> For example gathering Win9x CPU usage the sequence is:
> >>> 1) Open StatData, stash the key and leave it open 'till you're done
> >>> monitoring or your app closes.
> >>> 2) Open StartSrv and StopSrv
> >>> 3) Query the value of StartSrv\KERNEL. (It's a throwaway, but
> >>> apparently necessary.)
> >>> 4) Open StartStat
> >>> 5) Query the value of StartStat\KERNEL\CPUUsage. (Another throwaway.)
> >>> 6) Close StartStat
> >>> 7) Query the value of StopSrv\KERNEL. (throwaway).
> >>> 8) Close StartSrv and StopSrv
> >>>
> >>> 9) Query StatData\KERNEL\CPUUsage as needed
> >>> 10) Close StatData
> >>newsgroup)
> >>
> >>
> >
> >
> >-Tom
> >(please post replies to the newsgroup)
>

[Garth Oatley]

Hi,

If we're talking NT then you can use the Performance Data Helper library.
An example of this can be found at

http://www.netfokus.dk/vbadmincode/w...tm#Performance

You can also connect to remote servers using this library.

--
Regards,

Garth Oatley

Take a look at http://www.netfokus.dk/vbadmincode
"Chris Fitzsimons" <fitzsic@byte400.demon.co.uk> wrote in message
news:38ccd673$1@news.devx.com...
>
> I have a very similar class using the registry to get the CPU usage. I
have
> been unsuccessful in getting it to work under Windows NT. Does anyone
know
> of an API or a way to hook into the Windows NT performance monitor to get
> usage?
>
>
>
> tjeshGibberish@mindspring.com (Tom Esh) wrote:
> >Hmm... simpler than mine. I just fired up Regmon again - jeez I
> >completely missed the StopStat on close before. Looks like maybe you
> >found the bare minimum.
> >
> >On Thu, 9 Mar 2000 18:21:53 -0500, "David Crowell" <davidc@qtm.net>
> >wrote:
> >
> >>Okay, I managed to find MSKB article Q174631
> >>
> >>It gives an example (in C) of how to do it, I managed to get it working
> in
> >>VB also.
> >>
> >>I re-wrote the class module to do the following:
> >>
> >>in Class_Inititalize:
> >>RegOpenKey -- HKDD\PerfStats\StartStat
> >>RegQueryKeyEx -- KERNEL\CPUUsage
> >>RegCloseKey -- HKDD\PerfStats\StartStat
> >>RegOpenKey -- HKDD\PerfStats\StatData
> >>
> >>in the Usage property get (call as many times as needed):
> >>RegQueryKeyEx -- KERNEL\CPUUsage (from above open
HKDD\PerfStats\StatData)
> >>
> >>in Class_Terminate:
> >>RegCloseKey -- HKDD\PerfStats\StatData
> >>RegOpenKey -- HKDD\PerfStats\StopStat
> >>RegQueryKeyEx -- KERNEL\CPUUsage
> >>RegCloseKey -- HKDD\PerfStats\StopStat
> >>
> >>
> >>The StartSrv does not appear to be needed. I'm also not going to worry
> >>about an NT version, as I don't have NT to test with.
> >>
> >>Anyway, thanks for the pointers.
> >>
> >>Dave
> >>
> >>
> >>> For example gathering Win9x CPU usage the sequence is:
> >>> 1) Open StatData, stash the key and leave it open 'till you're done
> >>> monitoring or your app closes.
> >>> 2) Open StartSrv and StopSrv
> >>> 3) Query the value of StartSrv\KERNEL. (It's a throwaway, but
> >>> apparently necessary.)
> >>> 4) Open StartStat
> >>> 5) Query the value of StartStat\KERNEL\CPUUsage. (Another throwaway.)
> >>> 6) Close StartStat
> >>> 7) Query the value of StopSrv\KERNEL. (throwaway).
> >>> 8) Close StartSrv and StopSrv
> >>>
> >>> 9) Query StatData\KERNEL\CPUUsage as needed
> >>> 10) Close StatData
> >>newsgroup)
> >>
> >>
> >
> >
> >-Tom
> >(please post replies to the newsgroup)
>