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- 1. How to use check_memory.sh
- Add the following lines at the top of your macro. This will
- fork a process which will measure the memory used by executing
- the macro. The variable Interval defines the time between two
- measurements in seconds. Choose this Interval between two
- measurements according to your needs.
- Int_t Interval=10;
- Int_t PID=gSystem->GetPid();
- cout<<"PID: "<<PID<<endl;
- TString cmdline="$VMCWORKDIR/scripts/check_memory.sh ";
- cmdline+= PID;
- cmdline+= " ";
- cmdline+= Interval;
- cmdline+= " &";
- cout<<cmdline<<endl;
- gSystem->Exec(cmdline);
- After you add the lines run the macro as normal.
- After the macro finished you will have a file memory_consumption_<pid>.txt
- which contains rows with a timestamp and the relevant information.
- This file can be used to plot the memory consumption as a function of time.
- 2. How to display the data taken with check_memory.sh
- Run the root macro Read_Memory_File.C with the following parameters. The
- first parameter is the name of the file created with check_memory.sh .
- The second parameter is the time Interval between two measurements. It is
- planed to extract this information from the time string stored in the text
- file.
- The macro converts the ascii input to a ntuple which is stored in a root
- file with the same name as the input file but the extension .root.
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