UpCloud Web Run Tests
8GB 4 cores - Apr 21 2024

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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: UpCloud
Plan: 8GB 4 cores
Datacenter: Sweden
Number of CPU cores: 4
CPU type: AMD EPYC 7543 32-Core 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 54ms 170ms 98% 0.01% 304 0 5
5 43ms 110ms 93% 0.02% 1504 0 5
10 45ms 110ms 88% 0.03% 6004 0 10
15 45ms 115ms 81% 0.04% 4504 0 5
30 47ms 120ms 62% 0.04% 9014 0 5
50 46ms 120ms 19% 0.02% 15023 0 5
60 45ms 115ms 13% 0.02% 18027 0 5
80 44ms 115ms 5% 0.02% 24036 0 5
90 44ms 115ms 0% 0.02% 25415 1585 5

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