mirror of https://github.com/CrimsonTome/tldr.git
Add class & level details and update usage.
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# ionice
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# ionice
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> get/set program io scheduling class and priority
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> Get or set program I/O scheduling class and priority.
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> Scheduling classes: 1(realtime), 2(best-effort), 3(idle).
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> Priority levels: 0(the highest) - 7(the lowest).
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- sets process with PID 89 as an idle io process
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- Set I/O scheduling class of a running process
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`ionice -c 3 -p 89`
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`ionice -c {{scheduling_class}} -p {{pid}}`
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- runs 'bash' as a best-effort program with highest priority
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- Run a command with altered I/O scheduling class and priority
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`ionice -c 2 -n 0 bash`
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`ionice -c {{scheduling_class}} -n {{priority}} {{command}}`
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- prints the class and priority of the processes with PID 89
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- Print the I/O scheduling class and priority of a running process
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`ionice -p 89`
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`ionice -p {{pid}}`
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