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After running node --prof app.js, you get a log file named isolate-0xnnnnnnnnnnnn-v8.log. What is the next step to analyze this CPU profile?

medium📝 Predict Output Q4 of 15
Node.js - Debugging and Profiling
After running node --prof app.js, you get a log file named isolate-0xnnnnnnnnnnnn-v8.log. What is the next step to analyze this CPU profile?
ARename the log file to <code>profile.cpuprofile</code> and open in Chrome DevTools
BOpen the log file directly in a text editor to read CPU usage
CRun <code>node --prof-process isolate-0xnnnnnnnnnnnn-v8.log</code> to get a readable report
DRun <code>node --inspect isolate-0xnnnnnnnnnnnn-v8.log</code> to debug
Step-by-Step Solution
Solution:
  1. Step 1: Understand log file format

    The log file is raw and needs processing to be human-readable.
  2. Step 2: Use correct tool to process log

    Running 'node --prof-process' on the log file generates a readable CPU profile report.
  3. Final Answer:

    Run node --prof-process isolate-0xnnnnnnnnnnnn-v8.log to get a readable report -> Option C
  4. Quick Check:

    Analyze CPU profile = node --prof-process [OK]
Quick Trick: Use node --prof-process to convert raw logs to readable reports [OK]
Common Mistakes:
  • Trying to read raw log files directly
  • Renaming logs incorrectly for Chrome DevTools
  • Using --inspect flag on log files

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