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determining the cpu-load

Posted on 1998-10-01
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Last Modified: 2010-04-06
how can i determine the cpu-load in percent
(like taskmanager does?)
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Question by:manolis_afentakis
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10 Comments
 
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Expert Comment

by:KE
ID: 1341459
On Windows NT, use the PDH (Performance Data Helper) API.
On Windows 95, your'e on your own ;-)

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Expert Comment

by:BlackDeath
ID: 1341460
if you've got time until monday, i'll post you some code fragments i don't have here at work.

regs,

Black Death.
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by:Matvey
ID: 1341461
Hi guys, I think there was even a way to determine the CPU load that some particular thread causes, or am I wrong here? That might be encouraging, but I'm afraid that's all I can help with :) BTW you saw Billy's "System Monitor", right?
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Accepted Solution

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ZifNab earned 150 total points
ID: 1341462
Hi,

[ Win95 and NT store bunches of performance data in a special "virtual" branch of the registry, HKEY_PERFORMANCE_DATA (NT)
or HKEY_DYN_DATA (Win95). The format is different for NT and Win95 and sparsely documented. You can find something in the win32.hlp file if you search the index for things that start with PERF. ] from Peter Below.

Luckely for you, there exists an example (for NT) :

http://www.wilsonc.demon.co.uk/Delphi%20Components/pviewer/pviewer.zip (D4)

http://www.wilsonc.demon.co.uk/Delphi%20Components/pviewer/D3/pviewer.zip (D3)

Matvey, what is Billy's "System Monitor"...?

Regards, Zif.

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by:ZifNab
ID: 1341463
woops, wrong link, it should be http://www.wilsonc.demon.co.uk/Delphi%20Components/perfmon/perfmon.zip

Regards, Zif.
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by:Matvey
ID: 1341464
Ooh, hi Tom! Glad you're back, I'm also having a plenty of holidays here :) How was your trip?

I meant the standard windows system monitor, that should be (if you chosen to install it in the beginning) in Accessories/System Tools/System Monitor.
Found it? It's kinda` simple progy that shows different graphs of the memory usage, CPU usage HD, etc.
I also saw some programs that calculated their own CPU usage - I'm not sure how they do it though: it might be internal calculations of what it THEORETICALLY does, and how much CPU it'll take, or there might actually be a standard way to find it out for each thread how much CPU it uses.
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by:ZifNab
ID: 1341465
Hi Matvey, you on holiday?

Billy, ... now I got it... :-) sghh my mind is still on vacation I guess...

Regards, Zif.
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by:Matvey
ID: 1341466
There are lots of holidays here in september - october, so it's cool, but I'm not going on any trip right now. I'd love to hear about your vacation, how was it in Spain? (write me a note in the email maybe...).

c u, and good night! 2:10 am :)
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Expert Comment

by:ZifNab
ID: 1341467
c.u. Matvey, I'll write you about Spain, soon. 2:30 am here :-)
good night to you too! Zif.
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Author Comment

by:manolis_afentakis
ID: 1341468
hi ZifNab , this is a very good hint , but I can't found this Information

eg  CPU-load: 4%

how can I extract this Information?

thanks
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