Amazon EC2 Web Run Tests
m5d.xlarge - Aug 24 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: Amazon EC2
Plan: m5d.xlarge (Off rankings)
Datacenter: Virginia, USA
Number of CPU cores: 4
CPU type: Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz

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 55ms 300ms 98% 0.00% 304 0 5
5 47ms 125ms 93% 0.00% 1504 0 5
10 51ms 140ms 85% 0.00% 6005 0 10
15 49ms 145ms 79% 0.00% 4504 0 5
30 62ms 175ms 50% 0.01% 9013 0 5
50 70ms 190ms 9% 0.01% 15022 0 5
60 71ms 195ms 1% 0.01% 15914 2086 5

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