Vultr Sustained CPU Endurance Run
Regular 2GB 1 core - Dec 11 2017

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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: Vultr
Plan: Regular 2GB 1 core
Number of CPU cores: 1
Burstable CPU resources: no
CPU type: Virtual CPU a7769a6388d5


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. 1441
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. 8.66%
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. 48.0%
Min CPU idle Minimum percentage of CPU idle during the test. 43.5%
Average CPU steal Average percentage of CPU steal during the test. Lower is better. 0.04%
Max CPU steal Maximum percentage of CPU steal during the test. 0.14%


Number of tasks completed per hour




Date Number of iterations per hour CPU Idle % CPU Steal %
December 19, 2017 00:00 UTC 1492 50.48 0.03
December 18, 2017 22:00 UTC 1469 47.9 0.03
December 18, 2017 20:00 UTC 1459 47.83 0.03
December 18, 2017 18:00 UTC 1442 47.79 0.04
December 18, 2017 16:00 UTC 1430 47.86 0.04
December 18, 2017 14:00 UTC 1435 47.77 0.04
December 18, 2017 12:00 UTC 1445 47.84 0.03
December 18, 2017 10:00 UTC 1481 47.76 0.03
December 18, 2017 08:00 UTC 1442 48.0 0.03
December 18, 2017 06:00 UTC 1430 47.7 0.04
December 18, 2017 04:00 UTC 1426 47.36 0.04
December 18, 2017 02:00 UTC 1466 47.34 0.05

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