SystemInformationRVC4

SystemInformationRVC4 extends SystemInformation with telemetry that is specific to OAK devices based on the RVC4 platform. The SystemLogger node publishes it when an application runs on RVC4 hardware, exposing CPU averages, process-level CPU and memory usage, and expanded temperature sensors for the RVC4 subsystems.Use the message exactly like SystemInformation: subscribe to SystemLogger.out, or forward the data through a MessageGroup to the host. At runtime you can inspect fields such as chipTemperature, ddrMemoryUsage, cpuAvgUsage, and the process-level usage fields to monitor device health.

Example

Python

1import depthai as dai
2
3
4def printSystemInformationRVC4(info: dai.SystemInformationRVC4):
5    m = 1024 * 1024  # MiB
6    print(f"Ddr used / total - {info.ddrMemoryUsage.used / m:.2f} / {info.ddrMemoryUsage.total / m:.2f} MiB")
7    print(f"Average Cpu usage: {info.cpuAvgUsage.average * 100:.2f}%")
8    print(f"Device process usage - Memory: {info.processMemoryUsage / 1024:.2f} MiB, Cpu: {info.processCpuAvgUsage.average * 100:.2f}%")
9
10    t = info.chipTemperature
11    print(f"Chip temperature - average: {t.average:.2f}, cpuss: {t.cpuss:.2f}, gpuss: {t.gpuss:.2f}, mdmss: {t.mdmss:.2f}, video: {t.video:.2f}, ddr: {t.ddr:.2f}, camera: {t.camera:.2f}")
12    print("----------------------------------------")
13
14
15pipeline = dai.Pipeline()
16sysLog = pipeline.create(dai.node.SystemLogger)
17sysLog.setRate(1)
18sysLogQueue = sysLog.out.createOutputQueue(maxSize=4, blocking=False)
19
20pipeline.start()
21while pipeline.isRunning():
22    sysInfo = sysLogQueue.get()
23    printSystemInformationRVC4(sysInfo)

Reference

class

dai::SystemInformationRVC4

#include SystemInformationRVC4.hpp

variable

MemoryInfo ddrMemoryUsage

variable

int64_t processMemoryUsage

variable

CpuUsage cpuAvgUsage

variable

CpuUsage processCpuAvgUsage

variable

std::vector< CpuUsage > cpuUsages

variable

ChipTemperatureRVC4 chipTemperature

function

SystemInformationRVC4()

Construct SystemInformation message.

function

~SystemInformationRVC4()

function

void serialize(std::vector< std::uint8_t > & metadata, DatatypeEnum & datatype)

inline function

DatatypeEnum getDatatype()

function

 DEPTHAI_SERIALIZE(SystemInformationRVC4, ddrMemoryUsage, processMemoryUsage, cpuAvgUsage, processCpuAvgUsage, cpuUsages, chipTemperature)

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SystemInformationRVC4

Example

Reference

dai::SystemInformationRVC4

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