NerdTools

Fast, free online tools for sysadmins, developers, and nerds.

Uptime Monitoring

Understanding response time metrics

Response time measures how quickly your server responds to requests. NerdTools tracks this for every check.

What's a good response time?

  • Under 200ms — Excellent
  • 200-500ms — Good
  • 500-1000ms — Acceptable
  • Over 1000ms — May indicate performance issues

Response time trends

The sparkline chart shows response time trends over your last 48 checks. Look for patterns like gradual increases (potential capacity issues) or spikes at certain times (traffic peaks).

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