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From Yuheng Du <yuheng.du.h...@gmail.com>
Subject latency test
Date Fri, 04 Sep 2015 02:45:09 GMT
I am running a producer latency test. When using 92 producers in 92
physical node publishing to 4 brokers, the latency is slightly lower than
using 8 brokers, I am using 8 partitions for the topic.

I have rerun the test and it gives me the same result, the 4 brokers
scenario still has lower latency than the 8 brokers scenarios.

It is weird because I tested 1broker, 2 brokers, 4 brokers, 8 brokers, 16
brokers and 32 brokers. For the rest of the case the latency decreases as
the number of brokers increase.

4 brokers/8 brokers is the only pair that doesn't satisfy this rule. What
could be the cause?

I am using a 200 bytes message, the test let each producer publishes 500k
messages to a given topic. Every test run when I change the number of
brokers, I use a new topic.

Thanks for any advices.

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