UltaHost Web Run Tests
VPS Professional - Sep 14 2022

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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: UltaHost
Plan: VPS Professional
Datacenter: Frankfurt, Germany
Number of CPU cores: 3
CPU type: Common KVM 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 186ms 525ms 91% 0.46% 304 0 5
5 162ms 450ms 68% 1.52% 1504 0 5
10 152ms 430ms 44% 1.23% 6004 0 10
15 128ms 390ms 31% 0.32% 4505 0 5
20 122ms 390ms 13% 2.91% 6008 0 5
25 107ms 360ms 5% 1.28% 7510 0 5
30 93ms 310ms 0% 1.57% 9003 0 5
35 94ms 310ms 0% 1.30% 8975 1525 5

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