How does one “nice” a PID via htop after the process has begun?

Question

Let's say I'm running a multicore process. How do I "nice" this via htop after submission?

styrofoam fly · Accepted Answer · 2017-06-09 17:29:55Z

3

My version of htop displays this as the help line:

F1Help F2Setup F3Search F4Invert F5Tree F6SortBy F7Nice - F8Nice + F9Kill F10Quit

So you would hit F7 to decrease the "nice value", and F8 to increase it (the former may require special privileges).

styrofoam fly

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answered Jun 9 '17 at 17:13

dhag

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It looks like this is correct. What determines the "level" of niceness? – ShanZhengYang Jun 9 '17 at 23:31
On my system, NI goes from 0 to 19. – ShanZhengYang Jun 10 '17 at 18:05
2

Hi! At least on Linux, nice values go from -20 (highest priority) to 19 (lowest); but one has to be root or otherwise have adequate powers to lower a process' nice value. I don't know if this is standard: see your system's man pages for commands nice and renice to know more. – dhag Jun 11 '17 at 0:53

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