View CPU burst capacity accrual for Lightsail instances - Amazon Lightsail

View CPU burst capacity accrual for Lightsail instances

Amazon Lightsail instance plans, except for the Linux or Unix $384 and Windows $574 plans, accrue 4.17% of CPU burst capacity per hour. The maximum CPU burst capacity that can be accrued is equivalent to the amount of CPU burst capacity percentage that can be earned in a 24-hour period. Your instance stops accruing CPU burst capacity when the CPU burst capacity percentage reaches 100%.

Important
Accrued CPU burst capacity

  • Linux or Unix $384 and Windows $574 instance plans – These plans do not accrue CPU burst capacity. They will burst automatically, as needed.

  • Instances created before June 29, 2023 – CPU burst capacity does not persist if your instance is stopped. If you stop your instance, it loses all accrued burst capacity.

  • Instances created on or after June 29, 2023 – CPU burst capacity persists for seven days between instance stops and starts.

  • Accrued CPU burst capacity on a running instance does not expire.

CPU burst capacity accrual and consumption

Lightsail instances receive additional CPU burst capacity at launch, this is called launch CPU burst capacity. Launch CPU burst capacity allows instances to burst immediately after launch before they have accrued additional burst capacity. Launch CPU burst capacity does not count towards the burst capacity limit. If your instance has not spent its launch CPU burst capacity, and remains idle over a 24-hour period while accruing more burst capacity, its CPU burst capacity (percentage) metric graph will appear as over 100%.

Additionally, some Lightsail instances start in launch mode, which temporarily removes some of the performance limitations that are typically present on burstable instances. Launch mode allows you to run resource-intensive scripts at launch without affecting the overall performance of your instance.