What should I do if the log output of a program running on Linux (jetson orin nano) is stuck?

Troubleshooting the problem of program log output stuck on Jetson Orin Nano

This article provides troubleshooting suggestions for the problem of stuck output of program logs running on Jetson Orin Nano Linux. The problem manifests as the program is running normally on the Windows system, but the log output stops updating on the target Linux system.

The known log fragments are as follows:

 <code>2024-04-24 16:35:09.488 CComBase::Load, Load szDllPath[/home/jetson/hanjiejianguanjiqiren/HJJGJQR/./lib/linux/HCNetSDKCom/libHCPreview.so] SUCC 2024-04-24 16:35:09.488 AbilityAnalyze---Init-- start 2024-04-24 16:35:09.490 CCoreGlobalCtrlBase::LoadDSo, HPR_LoadDSo Succ, Path[/usr/lib/aarch64-linux-gnu/libz.so.1.2.11], hHandleRet[-1824649216] 2024-04-24 16:35:09.490 The COM:HCCoreBase ver is 6.1.4.15, 2020_03_05. Async:1. 2024-04-24 16:35:09.490 The COM:Core ver is 6.1.9.45, 2022_09_02. Async:1. 2024-04-24 16:35:09.490 This HCNetSDK ver is 6.1.9.45 Ver 2022_09_02. 2024-04-24 16:35:09.491 AbilityAnalyze---Init-- over, DeviceList path [/home/jetson/hanjiejianguanjiqiren/HJJGJQR/lib/linux/HCNetSDKCom/LocalXml/DeviceList.xml], load result[0] 2024-04-24 16:35:09.491 The COM:Preview ver is 6.1.9.45, 2022_09_02.</code>

The log shows that some libraries have been loaded successfully ( libHCPreview.so , libz.so.1.2.11 ), and the program initialization has also been completed. The problem may be in subsequent operations. To resolve this issue, it is recommended to try the following steps:

1. Dependency library version verification: Double-check the versions of all dependency libraries to ensure compatibility with the program. The library version displayed in the log may not be the latest or does not match the expected version of the program. Use ldd<your_program></your_program> The command checks the library and its paths that the program depends on and compares the version number. Consider updating or falling back to a known compatible version.

2. Troubleshoot permissions: Use the ls -l command to check the permissions of the program and its related files and directories. Ensure that the user running the program has sufficient read and write permissions. Use chown and chmod commands to adjust permissions if necessary. Pay special attention to the permissions of the log file write path.

3. Force refresh of log buffer: Add fflush(stdout) or fflush(stderr) statements to the program to force refresh the output buffer to ensure that the log is written to the file immediately. This can help determine whether the log is buffered.

4. Network connection testing: If the program involves a network connection (such as remote access to the Hikvision camera), use the ping command to test the stability of the network connection. Check the network configuration to ensure that the network connection is normal and troubleshoot network delays or packet loss.

5. Debug information enhancement: Add more debug logs to the program to record the critical execution steps and status of the program. This helps locate the dead spot. Consider using a debugger (such as GDB) for more in-depth debugging.

6. Environment variable check: Check the environment variables in the program running environment to ensure that all necessary environment variables are set correctly. Incorrect setting of environment variables may cause abnormal program behavior.

7. System log check: Check the system log (usually located in the /var/log directory) to find error information that may occur during the program operation. This may provide additional clues.

8. Memory Leak Check: Long-running programs may have memory leak problems, which will eventually cause the program to crash or get stuck. Use the memory analysis tool to check the program for memory leaks.

If the above steps fail to resolve the issue, please provide more information, for example:

• The source code (or key part) of the program
• Program Compilation Commands
• Full log output (if the log ends up with more output)
• System details (kernel version, distribution version, etc.)
• Hikvision camera model and configuration

More detailed information will help diagnose and resolve problems more accurately.

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