benchmark: improve cpu.sh for safety and usability #60162
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The previous cpu.sh script was minimal. This change makes it a more robust and safe utility for managing CPU governors during benchmarks. The script now includes: - Checks to ensure it only runs on Linux with root privileges. - A `reset` command to restore the CPU governor to a dynamically detected system default. - A `get` command to check the current governor for all cores. - An improved usage guide and clearer feedback messages.
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The previous cpu.sh script was minimal. This change makes it a more robust and safe utility for managing CPU governors during benchmarks.
The script now includes:
resetcommand to restore the CPU governor to a dynamically detected system default.getcommand to check the current governor for all cores.