Kafka uses and relies on OS level caching heavily. Likely you're just
measuring that. No need to worry unless you're actually seeing any GC
related problems.

--
Sharninder



On Tue, Nov 10, 2015 at 4:44 PM, Birendra Kumar Singh <singh...@gmail.com>
wrote:

> I am looking to understand the RAM usage of kafka cluster
>
> I have the following running
>
> VM -1 (3.75GB RAM)
>        kafka-server 1
> VM-2 (3.75 GB RAM)
>       kafka-server 2
>
> I have one topic created.
> Prior to any message in the topic - RAM used by kafka server process was
> around 8%.
> I pushed around 200000 messages on the topic within a span of couple of
> hours -
> Its been almost 20 hours since the messages were pushed. I see that right
> now the kafka server process is using around 30% of memory.
>
> Why is so much of memory being used ? Can someone help me understand how to
> optimize it.
>
> Thanks
> Birendra
>



-- 
--
Sharninder

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