[quote="Sekhar1, post:6, topic:155918"]
I am using Low level rest client for sending request in loop and using performRequest() its **sync** method.For each every request waiting for response.
[/quote]

This means you're only sending one request at once, which seems unrealistic, and explains why Elasticsearch is hardly doing any work. I think you will get better performance sending requests in parallel.

[quote="Sekhar1, post:6, topic:155918"]
I try to use Rally for benchmarking but i am getting below error while starting time. I my system already JAVA8 available but its telling JAVA11.I am unable to understand root cause of the problem.
[/quote]

I would ask this question in a separate thread with the `Rally` tag, because I am not a Rally expert. Java 11 is required for Elasticsearch development and perhaps this includes running Rally. The simplest thing to do would be to install Java 11.

Please could you format logs using the `</>` button and check they look ok with the preview before sending.

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