Like most processors, the Raspberry Pi provides a way to check its operating parameters. This uses a command vcgencmd run with various options such as the following examples run on a Raspberry Pi 3:
vcgencmd measure_temp temp=51.5'C vcgencmd measure_volts volt=1.2000V vcgencmd measure_clock arm frequency(45)=600064000 vcgencmd measure_clock core frequency(1)=250000000 vcgencmd get_mem arm arm=880M vcgencmd get_mem gpu gpu=128M vcgencmd get_config int arm_freq=1200 audio_pwm_mode=1 config_hdmi_boost=5 core_freq=400 desired_osc_freq=0x36ee80 disable_commandline_tags=2 disable_l2cache=1 force_eeprom_read=1 force_pwm_open=1 framebuffer_ignore_alpha=1 framebuffer_swap=1 gpu_freq=300 hdmi_drive=2 hdmi_force_cec_address=65535 init_uart_clock=0x2dc6c00 lcd_framerate=60 over_voltage_avs=0x1cfde overscan_bottom=48 overscan_left=48 overscan_right=48 overscan_top=48 pause_burst_frames=1 program_serial_random=1 sdram_freq=450 temp_limit=85
Some of these are settable in the /boot/config.txt file or using the sudo raspi-config command.
Last updated: July 12, 2016
