1. /**
  2. * Collects runtime environment metrics with limited memory usage.
  3. * @returns {object} An object containing runtime metrics.
  4. */
  5. function collectRuntimeMetrics() {
  6. const metrics = {};
  8. // CPU information
  9. metrics.cpu = {
  10. user: process.cpuUsage().user,
  11. system: process.cpuUsage().system,
  12. idle: process.cpuUsage().idle
  13. };
  15. // Memory information
  16. metrics.memory = {
  17. total: process.memoryUsage().totalHeapUsed, // Total heap used
  18. rss: process.memoryUsage().rss, // Resident Set Size (physical memory)
  19. heapTotal: process.memoryUsage().heapTotal, //Total heap size
  20. heapUsed: process.memoryUsage().heapUsed //Used heap size
  21. };
  23. // Node.js version
  24. metrics.nodejsVersion = process.version;
  26. // Operating system
  27. metrics.os = process.platform + " " + process.release(); //Platform and release version
  29. // Environment variables (limited to a few key ones)
  30. metrics.environment = {};
  31. for (const key in process.env) {
  32. if (key.startsWith('NODE_')) { //Only collect NODE_ variables
  33. metrics.environment[key] = process.env[key];
  34. }
  35. }
  37. // Time information
  38. metrics.startTime = Date.now();
  40. return metrics;
  41. }
  43. // Example usage (for testing)
  44. // const metrics = collectRuntimeMetrics();
  45. // console.log(JSON.stringify(metrics, null, 2));

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