What is the slot vs cpu ratio?

[srikanth flink]

Hi there,

I've 3 node cluster with 16cores each. How many slots could I utilize at max and how to I do the calculation?

Thanks

Srikanth

[vino yang]

Hi srikanth,

Referred from the official document:

"Each Flink TaskManager provides processing slots in the cluster. The number of slots is typically proportional to the number of available CPU cores of each TaskManager. As a general recommendation, the number of available CPU cores is a good default for taskmanager.numberOfTaskSlots."

So based on the recommendation, you can have a 3 * 16 = 48(max) slots.  And the calculation information is here[1].

Additionally, here is some resource about the task slot[2].

[1]: https://ci.apache.org/projects/flink/flink-docs-master/ops/config.html#configuring-taskmanager-processing-slots

[2]: https://ci.apache.org/projects/flink/flink-docs-master/concepts/runtime.html#task-slots-and-resources

Best,

Vino

srikanth flink <[hidden email]> 于2019年11月6日周三 下午9:45写道：

Hi there,

I've 3 node cluster with 16cores each. How many slots could I utilize at max and how to I do the calculation?

Thanks

Srikanth