Is it possible or (and) a good practice to change queue_size of bulk to unlimited?

Elastic Stack Elasticsearch
1

HI,

I am running a 3 node ELK GA 5.0.0 cluster. I have the below setting (that I have queried using API).

"bulk": {
	"type": "fixed",
	"min": 10,
	"max": 10,
	"queue_size": 50
},

Each vm has 10 cores. Acording to the documentation, it has taken default values. My CPU usage is ~10%, so that I am running one Logstash instance also on each. Is it possible to change the queue_size to -1 (unlimited)? Is there any risk? Is there any perfomance improvement / compromise? How can I update the config using API POST?

Thank you.

2

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