Katapult Web Run Tests
ROCK-6 Dedicated - May 13 2025

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Web Run tests are made of a load test tool and a database intensive Rails web application.

The load test tool sends HTTP requests to the web application at a controlled rate and records HTTP response codes, response latencies and timeouts. The load test tool is multithreaded and runs on the same VPS where the web application runs.

The intent is to measure:

  • the response times (latency) of the web server
  • the amount of CPU used to serve those requests under various load levels
  • what's the maximum load at which 100% requests are served without timing out.

Provider: Katapult
Plan: ROCK-6 Dedicated
Location: London, United Kingdom
Number of CPU cores: 2
CPU type: AMD EPYC-Rome Processor

Web Runs by request rate


Note: the P99 is the 99th percentile. The P99 latency is the latency of the 1% slowest HTTP requests in the web run.


Rate (reqs/s) Average Latency P99 Latency CPU idle CPU steal Successful requests Timed out requests Duration (minutes)
1 61ms 170ms 96% 0.01% 304 0 5
5 57ms 145ms 84% 0.02% 1504 0 5
10 59ms 155ms 67% 0.02% 6005 0 10
15 60ms 160ms 50% 0.02% 4505 0 5
25 59ms 155ms 20% 0.02% 7509 0 5
30 58ms 150ms 7% 0.02% 9015 0 5
35 57ms 150ms 0% 0.02% 9892 608 5

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