ScalaHosting Web Run Tests
Build #3 - Nov 25 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: ScalaHosting
Plan: Build #3
Datacenter: New York, USA
Number of CPU cores: 8
CPU type: QEMU Virtual CPU version 2.5+

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 63ms 175ms 99% 0.00% 304 0 5
5 59ms 165ms 95% 0.00% 1504 0 5
10 56ms 160ms 92% 0.01% 6005 0 10
15 56ms 165ms 88% 0.01% 4504 0 5
30 56ms 160ms 77% 0.01% 9013 0 5
60 58ms 170ms 53% 0.03% 18027 0 5
100 58ms 175ms 23% 0.03% 30045 0 5
130 57ms 175ms 0% 0.01% 39059 0 5
140 57ms 175ms 0% 0.03% 39202 2798 5

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