Multiple Logstash to a single Elasticsearch

I had to make a log analyzer. My friend has created a same thing last year to analyze log using ELK stack but it take 30-40 mins for logstash processing in his project. Is there any way that I can use multiple Logstash instances to process log data and then pass it on to ElasticSearch?
So that time required will be less.

logstash is multi-threaded, so a single logstash instance should be able to consume all the resources of a single server. You can certainly distribute your logs across multiple servers to consume them faster.

How have you determined that it is Logstash that is the bottleneck and not Elasticsearch?


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