A null or zero CPU value is passed to Docker asĠ, which Windows interprets as 1% of one CPU. Windows containers only have access to the specified amount of CPU that'sĭescribed in the task definition. On Windows container instances, the CPU limit is enforced as an absolute limit, or a Null, zero, and CPU values of 1 are passed to Docker as 2. CPU values of 1 are passed to Docker as 1, which the LinuxĪgent versions greater than or equal to 1.2.0: Null and zero CPU values are passed to Docker as 0, which Docker then converts (including null), the behavior varies based on your Amazon ECS container agentĪgent versions less than or equal to 1.1.0: However, the CPU parameter isn't required, and youĬan use CPU values below 2 in your container definitions. For moreĬonstraint in the Docker documentation. Value to calculate the relative CPU share ratios for running containers. On Linux container instances, the Docker daemon on the container instance uses the CPU If both tasks were 100%Īctive all of the time, they would be limited to 512 CPU units. To higher CPU usage if the other container was not using it. Guaranteed a minimum of 512 CPU units when needed. Launched another copy of the same task on that container instance, each task is That container, and that's the only task running on the container instance, thatĬontainer could use the full 1,024 CPU unit share at any given time. Single-container task on a single-core instance type with 512 CPU units specified for Instance with the same ratio as their allocated amount. Linux containers share unallocated CPU units with other containers on the container You can determine the number of CPU units that are available per EC2 instance typeīy multiplying the vCPUs listed for that instance type on the Amazon EC2 Instances detail page
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