What is the slot vs cpu ratio?

[srikanth flink <fl...@gmail.com>]

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

Re: What is the slot vs cpu ratio?

[vino yang <ya...@gmail.com>]

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 <fl...@gmail.com> 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
>