Chuck
e17961f67e
optimize the performance of obtaining CPU temperature (#6398)
Preformance Test (on NanoPi R2s, repeat 1000 times):
old command:
temp="$(awk "BEGIN{printf (\"%.1f\n\",$(cat /sys/class/thermal/thermal_zone0/temp)/1000) }")°C"
```
real 0m 9.20s
user 0m 3.29s
sys 0m 6.24s
```
new command:
temp="$(awk '{ printf("%.1f °C", $0 / 1000) }' /sys/class/thermal/thermal_zone0/temp)"
```
real 0m 5.57s
user 0m 1.78s
sys 0m 3.97s
```
Signed-off-by: Chuck <fanck0605@qq.com>
2021-02-21 12:27:55 +08:00
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