...
All daq nodes should run the cpu frequency governor in "performance modeperformance" mode."
As of this writing (May 2, 2022) the daq node daq-xpp-cam02 is not running the cpu frequency governor in "performance" mode.
It appears to be running in "ondemand" mode, which "tries to use the slowest speed as much as possible, but quickly switches up or down when needed."
| Code Block | ||||
|---|---|---|---|---|
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$ hostname daq-xpp-cam02 $ cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor ondemand $ |
...
As of this writing (May 4, 2022) two MEC pgp nodes differ in this scaling_governor setting.
| Code Block | ||||||
|---|---|---|---|---|---|---|
| ||||||
-bash-4.2$ hostname
daq-mec-pgp01
-bash-4.2$ cat /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor
powersave
powersave
powersave
powersave
powersave
powersave
powersave
powersave
powersave
powersave
powersave
powersave
powersave
powersave
powersave
powersave
-bash-4.2$
==============================
-bash-4.2$ hostname
daq-mec-pgp02
-bash-4.2$ cat /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor
performance
performance
performance
performance
performance
performance
performance
performance
performance
performance
performance
performance
performance
performance
performance
performance
-bash-4.2$ |
Hyperthreading
The case for enabling hyperthreading
...