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I want to limit the memory and cpu a process can use, because it is overloading my PC.

I open a terminal, run ulimit -v 4192000, run the process, open another terminal and run cpulimit -p pid_of_the_process -l 50.

Well... first the cpu limit isn't working, it reaches peaks of 90% or even 100% on random cores (I have four). And second, when the terminal where I launched the process reaches the 4 GB of memory, the process gets killed instead of keep running with 4 GB.

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The RAM behavior is expected. What do you expect the program to do when it needs more RAM but it's not available? I would use nice for the CPU limiting. – jordanm Feb 24 at 18:51

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