How to extend the recording time when Profiler monitors the performance of SDK operation?

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Context

When using DevEco Profiler to monitor SDK performance, the recording session automatically ends after about 7–8 minutes. This creates limitations during long-term performance monitoring and analysis.

Description

DevEco Profiler provides real-time monitoring capabilities across multiple system resources such as CPU, memory, GPU, frame rate, network, and power consumption.

• It allows top-down analysis of performance bottlenecks.
• Developers can use it to detect memory leaks, thrashing, and overflows with the Allocation tool.
• However, by default, recording sessions are constrained to relatively short durations (7–8 minutes).

Solution / Approach

To extend the recording duration, you need to modify the Profiler configuration file:

1.Navigate to the following directory:

   C:\Users\xxxxxx\AppData\Local\Huawei\DevEcoStudioxx

2.Inside the .insight folder, open the file config.json5.

3.Depending on the monitoring template you are using, adjust the restrainedDuration value (unit: seconds):

For Allocation template:

   "JSAllocationUsage": [
     {
       "scene": 0,
       "recommendedDuration": 300,
       "restrainedDuration": 480
     }
   ]

For CPU template:

   "CpuPlaceholderUnitV101": [
     {
       "scene": 0,
       "recommendedDuration": 30,
       "restrainedDuration": 120
     }
   ]

Example: To extend the Allocation recording session to 15 minutes (900 seconds), set "restrainedDuration": 900.

Key Takeaways

• Default session duration is limited (approx. 7–8 minutes).
• Duration limits can be increased by modifying restrainedDuration in config.json5.
• JSAllocationUsage → used for memory allocation monitoring.
• CpuPlaceholderUnitV101 → used for CPU performance monitoring.
• Values are in seconds, so adjust according to your monitoring needs.

Written by Mehmet Algul