Contabo Sustained CPU Endurance Run
VPS S NVMe - Mar 08 2022

Go to Contabo



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: Contabo
Plan: VPS S NVMe
Number of CPU cores: 4
Burstable CPU resources: no
CPU type: AMD EPYC 7282 16-Core 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. 12815
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. 6.57%
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. 49.8%
Min CPU idle Minimum percentage of CPU idle during the test. 49.6%
Average CPU steal Average percentage of CPU steal during the test. Lower is better. 0.49%
Max CPU steal Maximum percentage of CPU steal during the test. 3.60%


Number of tasks completed per hour




Date Number of iterations per hour CPU Idle % CPU Steal %
March 09, 2022 00:00 UTC 12091 50.9 0.76
March 08, 2022 22:00 UTC 11739 49.7 1.2
March 08, 2022 20:00 UTC 11587 49.69 1.49
March 08, 2022 18:00 UTC 11823 49.71 1.26
March 08, 2022 16:00 UTC 12570 49.77 0.3
March 08, 2022 14:00 UTC 12942 49.79 0.19
March 08, 2022 12:00 UTC 12965 49.8 0.17
March 08, 2022 10:00 UTC 13391 49.81 0.11
March 08, 2022 08:00 UTC 13676 49.82 0.07
March 08, 2022 06:00 UTC 13412 49.81 0.22
March 08, 2022 04:00 UTC 13690 49.84 0.08
March 08, 2022 02:00 UTC 13591 49.82 0.12
March 08, 2022 00:00 UTC 13947 49.76 0.08

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