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2014-08-25

CPULimit for multiple processes (limits ALL of them, not just the first)

3 years

Works with Finder

2

Github Watches

7

Github Forks

9

Github Stars

mcpulimit

cpulimit-like program for more than process.

Use case

I have a program with starts several child processes (GraphicsMagic), which each starts GhostScript subprocess, which eats cpu and together overheats my tiny laptop, which reboots.

Usage

mcpulimit [OPTIONS] [executable names]
    -l=50: the percent (between 1 and 100) to limit the processes CPU usage to
    -t=0: timeout (seconds) to exit after if there is no suitable target process (lazy mode)

The executable must be full paths if the executable is not found in PATH. mcpulimit sends SIGSTOP and SIGCONT signals to the processes, thus you need to have permission for this - but practically if mcpulimit runs as the same user as the processes to be limited, no problems araise.

Installation

go install github.com/tgulacsi/mcpulimit

Requirements

Go compiler and an operating system with /proc filesystem, and SIGSTOP and SIGCONT signals.

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    Reviews

    4 (1)
    Avatar
    user_K8nfbN8B
    2025-04-17

    I have been using mcpulimit by tgulacsi and it's been a game-changer for managing CPU usage on my system! The tool is easy to implement and incredibly efficient in preventing any process from hogging too much CPU. If you need a reliable way to limit CPU for tasks, I highly recommend checking it out at https://github.com/tgulacsi/mcpulimit.