Vultr Web Run Tests
High Performance 4GB - Apr 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: Vultr
Plan: High Performance 4GB
Datacenter: Seattle, USA
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 52ms 165ms 96% 0.01% 304 0 5
5 45ms 130ms 87% 0.01% 1504 0 5
10 46ms 130ms 75% 0.02% 6005 0 10
15 44ms 130ms 63% 0.02% 4504 0 5
25 45ms 130ms 39% 0.01% 7509 0 5
35 44ms 130ms 17% 0.01% 10515 0 5
40 44ms 130ms 6% 0.01% 12018 0 5
45 43ms 125ms 0% 0.00% 12957 543 5

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