Read CPU and memory Usage of whole system (not JVM)

Ignition
1

Hi,
I’d like to monitor the CPU and memory usage of the whole system and not just the JVM.
Thanks for any help or source code.

1 Like
2

Something like this should work, though it’s not guaranteed to work on every JVM:

>>> from java.lang.management import ManagementFactory
>>> bean = ManagementFactory.getOperatingSystemMXBean()
>>> print bean.getSystemCpuLoad() * 100.0

It relies on the returned bean being a com.sun.management.OperatingSystemMXBean. The interface does not include getSystemCpuLoad.

3

I check but it doesn’t work it seems it only return JVM CPU usage.

I find some code but I cant make it work in igniton. Could you please help me on that.

import com.sun.management.OperatingSystemMXBean

OperatingSystemMXBean osBean = ManagementFactory.getPlatformMXBean(OperatingSystemMXBean.class);
# What % CPU load this current JVM is taking, from 0.0-1.0
print osBean.getProcessCpuLoad()

# What % load the overall system is at, from 0.0-1.0
System.out.println(osBean.getSystemCpuLoad());
4

The code I posted is the same thing but already converted to Jython and should work in Ignition…

1 Like
5

I ran the code (in script console) on 7.9.12 and it returned 0.0 when CPU was ~35%

Edit: re-ran the code and it works without changing anything…

6

I’m not sure about re-running, but if you are running it in the script console you’re only getting the CPU usage from whatever computer is running the Designer, not necessary of the Ignition Gateway.