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There is no such tool because it does not make any sense from a single-program point of view. One can consider CPU/HDD/RAM/swap as resources. These resources can be shared in different ways by the operating system among processes, users, contexts, etc. In some specific situations, it makes sense to tell the operating system to enforce hard limits: Don't ...


There is something kind of what you describe: there is a feature to limit the amount of RAM used by a process (RAM, as opposed to virtual memory). The RLIMIT_RSS limit sets an upper bound a program's resident set size, i.e. the part of the memory of that process which is resident in memory (as opposed to swapped out). However, it is not implemented on Linux. ...

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