System monitor counter

[Paolo_Squillari]

I'm trying to use system monitor activeX in order to control memory usage and CPU usage of my PC.

All activeX properties work fine except the most useful: counter.

I've attached the screen shot of my VI.

P.S. I think counter property is used to read wich counter to read?!

Thank you,

Paolo.

[smercurio_fc]

You're probably referring to the "Counters" property, which is a collection of counters, as described in MSDN. To use this you can do something like this:



Note: You need to change the "Preferred Execution System" of the VI to "user interface" to get a VI that uses this ActiveX control to run. You can change this from the VI Properties (File->VI Properties, and then change to the "Execution" category). Interestingly enough, once the VI stops the control keeps running.

Message Edited by smercurio_fc on 05-02-2006 08:58 AM

[Paolo_Squillari]

Great! It's working!!!

Thank you!!!!

Paolo.

[parthabe]

Simply Superb !

[parthabe]

Great work smercurio !

[acfkt]

Cool!  Anyone know the name of counter for memory usage?  How did you get the input reference to DISystemMonitor?

Yes I did go to MSDN, and after swimming in the links for awhile, I found some code for listing the counters... but wow, surely the typical name for a memory counter hasn't changed?

Thanks.

[smercurio_fc]

The input is the ActiveX container on the front panel. Attached is the actual VI (LV 8.2). I know it works in XP, but it doesn't work in Windows 7. At least Windows 7 64-bit. Not sure about Windows 7 32-bit.

The syntax for the pathname is \\Computer\PerfObject(ParentInstance/ObjectInstance#InstanceIndex)\Counter. In my example "PerfObject" is "Process(*)" to show all processes, and "Counter" is the name of the counter, which is "% Processor Time". You can get the various performance objects from this page: http://technet.microsoft.com/en-us/library/cc783073%28WS.10%29.aspx. Once you select one of the performance objects you want then the right-hand pane will list the available counter names. As you'll note for the Memory object, there's lots of memory counters. 

[acfkt]

Thanks!!!  This was interesting.  After trying various counters from Memory, TCP, Process, System, and Server, I couldn't find any which correlated with the "not enough memory" error associated with my TCP/IP connection.  Any ideas?  Do you think this is my Windows Message loop filling up?

[smercurio_fc]

That's a different question, and we should stick to the separate thread you created for this.