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PerformanceCounter Mem Leak
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poor beggar
hello,

after starting a performance counter everything works fine, but every time I get the value of the counter I've a mem leak of 4K, what can I do against it ??

getting vallue : perfmoncounter.nextvalue

I' ve the problem with every counter I monitor! what to do against it ??

--
thanks for your attention,

poor_beggar

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Jerry Pisk
Upgrade to Windows 2003. PerformanceCounter leaks resources (system handles)
under Windows 2000 (and possibly others).

Jerry

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poor beggar
Are You sure that that is the reason? so there is nothing I can do about it ??

So if my progrma runs on a Win 2003 PC I'll not have that problem, even when I take counters from a remote machine ?? or will I leak mem on the remote machine ?
--
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poor_beggar

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"Jerry Pisk" wrote:

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Jerry Pisk
No, I'm not sure that you're seeing the same problem. But look at the number
of handles used by your app, you should see that go up a lot, by 7 every
time you request a performance counter sample. Now there might be some
memory not being released as well, I haven't looked at my memory usage when
I was investigating this.

And as far as I could tell the problem is in the system library, so using
Win2k3 server to read remote counters should be ok. Give it a try.

Jerry

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Ryan Byington (VIP)
I tried this out and I do not think we are leaking bytes. I think that on
every iteration the GC does not free up the memory used by NextValue. I
wrote the following sample. With the GC.Collect() and
GC.WaitForPendingFinalizers() commented out the memory usage goes up every
iteration. However with these enabled the memory usage stay pretty
constant. The GC does not free up resources immediately after they go out
of scope and these method on the GC class will force the GC to run and free
up all resources. However I would not recomend calling them explicitly I
would just let the GC do it's thing.

using System;
using System.Diagnostics;

public class Test
{
    public static void Main()
    {
        PerformanceCounter pc = new PerformanceCounter("Processor", "% Processor
Time", "_Total");

        for(int i=0; i<1000; ++i) {
            Console.WriteLine(pc.NextValue());
            
            GC.Collect();
            GC.WaitForPendingFinalizers();
            System.Threading.Thread.Sleep(1000);
        }
    }
}

Ryan Byington [MS]

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System.Console
System.Diagnostics.PerformanceCounter
System.GC
System.Threading.Thread




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