System Performance
Tuned - dynamic system duning daemon
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rpm -qa | grep tuned |
check if tuned package is installed |
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yum install tuned |
install tuned |
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systemctl status/enable/disable tuned |
check tuned status |
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tuned --version |
check tuned version |
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tuned-adm |
change setting for tuned daemon |
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tuned-adm active |
check which profile is active |
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tuned-adm list |
list available profiles |
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tuned-adm profile profile-name |
change profile |
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tuned-adm recommend |
recommended profile |
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tuned-adm off |
turn off tuned daemon |
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change via web console (check firewall) |
nice and renice
- Prioritise CPU tasks
- Range from -20 (highest priority) to 19 (lowest priority), 0 = default
- System priorities range 0-139, (0-99 real time), (100-139 users)
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top |
check active process priority |
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ps axo pid,comm,nice,cls --sort=-nice |
show active processes nice, by nice |
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nice -n # process-name |
set process value |
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nice -n -12 top |
set top nice to -12 |
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renice -n -15 <PID> |
change active PID nice to -15 |