Amazon Lightsail Sustained CPU Endurance Run
1GB 2cores - Sep 06 2018

Go to Amazon Lightsail



The sustained CPU endurance test runs a cpu intensive task in a loop for 24 hours. As maxing out the cpu might be considered abusive, the tests aims to use no more than 50% of each cpu core on the VPS.

The purpose of this type of test is

  • first to evaluate the speed to the VPS,
  • second to evaluate the stability over time of the cpu available to the VPS
  • and third to detect VPS where the CPU is throttled and the performance goes down over time after cpu utilization goes over a threshold the provider considers excessive for a particular plan.

The performance is measured at regular intervals in terms of tasks executed per hour, amount of idle cpu and amount of "cpu steal".

Provider: Amazon Lightsail
Plan: 1GB 2cores
Number of CPU cores: 1
Burstable CPU resources: yes (10% baseline)
CPU type: Intel(R) Xeon(R) CPU E5-2676 v3 @ 2.40GHz


DescriptionValue
Target CPU usage Overall CPU that the endurance test tries to use across all CPU cores on the VM. 50%
Average iterations per hour Average number of tasks executed per hour. It represents how much work the VPS was able to achieve per hour. Higher numbers are better. 403
Coefficient of variation iterations per hour This represents the dispersion of the number of tasks per hour. It's the standard deviation divided by the mean number of tasks per hour. It's an indicator on stability of the performance of the VPS. A low standard deviation means the VPS speed stayed close to constant. A high standard deviation means performance varied significantly during the test. 98.54%
Average CPU idle Average percentage of CPU that was idle during the test. This number should be close to 50% unless the CPU is being throttled like in burstable VPS plans. 39.3%
Min CPU idle Minimum percentage of CPU idle during the test. 7.9%
Average CPU steal Average percentage of CPU steal during the test. Lower is better. 67.76%
Max CPU steal Maximum percentage of CPU steal during the test. 166.26%


Number of tasks completed per hour




Date Number of iterations per hour CPU Idle % CPU Steal %
September 11, 2018 00:00 UTC 248 46.5 89.44
September 10, 2018 22:00 UTC 252 45.58 79.61
September 10, 2018 20:00 UTC 246 43.54 79.99
September 10, 2018 18:00 UTC 250 44.89 79.72
September 10, 2018 16:00 UTC 221 35.88 81.52
September 10, 2018 14:00 UTC 217 35.2 81.7
September 10, 2018 12:00 UTC 213 33.61 81.96
September 10, 2018 10:00 UTC 203 30.78 82.6
September 10, 2018 08:00 UTC 197 28.88 82.95
September 10, 2018 06:00 UTC 185 25.48 83.65
September 10, 2018 04:00 UTC 1038 46.61 17.6
September 10, 2018 02:00 UTC 1261 52.05 0.3
September 10, 2018 00:00 UTC 1259 51.49 0.24

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