Vultr Web Run Tests
High Frequency 4GB - Sep 13 2020

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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: Vultr
Plan: High Frequency 4GB
Datacenter: Seattle, Washington, USA
Number of CPU cores: 2
CPU type: Intel Core Processor (Skylake, IBRS)

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 44ms 94ms 97% 0.01% 304 0 5
5 43ms 90ms 88% 0.02% 1504 0 5
10 44ms 96ms 76% 0.02% 6005 0 10
15 43ms 92ms 64% 0.01% 4505 0 5
25 43ms 96ms 42% 0.02% 7509 0 5
40 45ms 100ms 4% 0.01% 12018 0 5
45 42ms 94ms 0% 0.01% 13209 291 5
50 43ms 96ms 0% 0.01% 13077 1923 5

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