ScalaHosting Web Run Tests
Build #3 - May 25 2023

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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 98ms 290ms 98% 0.08% 304 0 5
5 85ms 225ms 93% 0.34% 1504 0 5
10 85ms 250ms 87% 0.77% 6005 0 10
15 84ms 250ms 81% 1.40% 4505 0 5
30 86ms 280ms 64% 2.19% 9014 0 5
50 98ms 290ms 37% 3.16% 15022 0 5
70 98ms 290ms 11% 3.88% 21032 0 5
80 95ms 290ms 1% 2.35% 23735 265 5
90 98ms 290ms 1% 2.18% 23060 3940 5

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