Determining the overall memory usage of ROOT

ROOT
1

Dear all,

is there a built-in facility in ROOT that allows me to read out the current memory usage of the running ROOT process? I found gSystem->GetMemInfo(), but it provides only the memory information on a system-wide level, which is of limited use…

Cheers,
Jochen

2

This example shows how to retrieve memory and CPU info:
https://root.cern.ch/doc/master/CPUMeter_8C.html

3

Thank you for your quick reply. Unfortunately the example shows only the use of gSystem->GetMemInfo(), which is of limited use to me as I can’t determine the memory usage of the ROOT-process by it. It is not even useful (on Linux) to get a Delta in Memory-Usage, since the fMemUsed-field includes the memory used by Linux for caching.

Cheers,
Jochen

4

I asked @bellenot who suggested to use GetProcInfo. Is it better for you ?

5

Yes! That is the information I was looking for! Thank you so much!

6

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