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Default shutdown wattage is around 1 to 1.4W. However this can be decreased by manually editing the EEPROM configuration, sudo rpi-eeprom-config -e and change the settings to:

sudo rpi-eeprom-config -e
BOOT_UART=1
POWER_OFF_ON_HALT=1
BOOT_ORDER=0xf416

To cancel a pending update run "sudo rpi-eeprom-update -r".

压力测试工具

Sysbench工具

vcgencmd命令

可以参考: https://blog.csdn.net/bona020/article/details/51373326

显示可用命令:

vcgencmd commands

vcgencmd measure_clock <clock>

显示时序, 可指定arm, core, h264, isp, v3d, uart, pwm, emmc, pixel, vec, hdmi, dpi.

vcgencmd measure_volts <id>

显示电压. id可以是core, sdram_c, sdram_i, sdram_p, 如不指定默认为core.

vcgencmd measure_temp

显示BCM2835芯片的温度.

vcgencmd codec_enabled <codec>

显示指定解码器是否可用, 解码器分别有H264, MPG2, WVC1, MPG4, MJPG, WMV9. 请注意MPG2和VC1是需要购买证书的.

vcgencmd版本

显示固件版本