Amazon EC2 Sustained CPU Endurance Run
c6a.large - Feb 15 2022

Go to Amazon EC2



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 EC2
Plan: c6a.large
Number of CPU cores: 2
Burstable CPU resources: no
CPU type: AMD EPYC 7R13 Processor


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. 4847
Coefficient of variation iterations per hour This represents the dispersion of the number of tasks per hour. It's the standard variation 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. 1.18%
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. 49.9%
Min CPU idle Minimum percentage of CPU idle during the test. 48.8%
Average CPU steal Average percentage of CPU steal during the test. Lower is better. 0.00%
Max CPU steal Maximum percentage of CPU steal during the test. 0.00%


Number of tasks completed per hour




Date Number of iterations per hour CPU Idle % CPU Steal %
February 17, 2022 00:00 UTC 4859 57.14 0.0
February 16, 2022 22:00 UTC 4864 49.9 0.0
February 16, 2022 20:00 UTC 4864 49.9 0.0
February 16, 2022 18:00 UTC 4866 49.9 0.0
February 16, 2022 16:00 UTC 4867 49.9 0.0
February 16, 2022 14:00 UTC 4852 49.84 0.0
February 16, 2022 12:00 UTC 4716 49.89 0.0
February 16, 2022 10:00 UTC 4753 49.8 0.0
February 16, 2022 08:00 UTC 4885 49.9 0.0
February 16, 2022 06:00 UTC 4891 49.89 0.0
February 16, 2022 04:00 UTC 4884 49.85 0.0
February 16, 2022 02:00 UTC 4864 49.9 0.0
February 16, 2022 00:00 UTC 4861 49.87 0.0

Be the first to learn about new Best VPS rankings. Subscribe to our newsletter.