How to get cpu usage and memory usage of the system in C# winforms?

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In my application i want to display cpu and memory usage in every time intervel of 1 second. Please help me to get exact details.

What I have tried:

iam using PerformanceCounter to get this information, but it is not correct with cpu usage of system. Please find the the code that are used in my application.

PerformanceCounter cpuCounter;
cpuCounter = new PerformanceCounter("Processor", "% Privileged Time", "_Total");
lbl_cpu_usage.Text = Convert.ToInt32(cpuCounter.NextValue()).ToString() + "%";(This code is written in the timer tick event.

Posted 1-Mar-17 19:01pm

Rahul s menon

Updated 1-Mar-17 19:42pm

v2

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Garth J Lancaster · Answer 1 · 2017-03-01T19:30:00

Solution 1

Performance counter objects in general need two values sampled at 1 - 2 seconds apart to be able to give accurate readings .. although I hate the fact I'm using a thread delay here, I can't think of a simpler way - see the two lines in bold I've added to your code - see if that makes it more accurate

C#

PerformanceCounter cpuCounter;
cpuCounter = new PerformanceCounter("Processor", "% Privileged Time", "_Total");
cpuCounter.NextValue();  
System.Threading.Thread.Sleep(1000); 
lbl_cpu_usage.Text = Convert.ToInt32(cpuCounter.NextValue()).ToString() + "%";

[edit] ref : Performance Counter Value Retrieval[^] [/edit]

Posted 1-Mar-17 19:30pm

Garth J Lancaster

Updated 1-Mar-17 19:43pm

v2

Comments

Rahul s menon 2-Mar-17 1:45am

I need to update cpu and memory usage in every 1 seconds, that's why i am using timer. The above code is not given the exact usage detail.

Graeme_Grant 2-Mar-17 1:50am

use a timer set to 1000 milliseconds and don't use Thread.Sleep.

Rahul s menon 2-Mar-17 1:54am

I am already timer is used with an time intervel of 1000 milliseconds. But both cpu and memory percentage is different from system usage.

Garth J Lancaster 2-Mar-17 1:58am

how 'different' ? - I don't think you're ever going to get figures that exactly match the system usage

Rahul s menon 2-Mar-17 2:07am

we can get exact usage by implementing wmi. if you have any idea to implement wmi?

Garth J Lancaster 2-Mar-17 2:34am

I'd have to google it - there's plenty out there, but Im not a WMI fan