I you enable acks, it's not fire and forget any longer. -Matthias
On 11/16/18 1:00 AM, Abhishek Choudhary wrote: > Hi, > > I have been doing some performance tests with kafka cluster for my project. > I have a question regarding the send call and the 'acks' property of > producer. I observed below numbers with below invocation of send call. This > is a simple fire and forget call. > > producer.send(record); > > The topic has 5 partitions and I see below results with different acks > value and replication factor. The kafka cluster has 5 nodes running with > default values and using local disk > > *acks Replication factor=1 > Replication factor=3* > 0 1330k msgs/sec > 1260k msgs/sec > 1 1220k msgs/sec > 1200k msgs/sec > -1(all) 1220k msgs/sec > 325k msgs/sec > > > As you can see as the acks value changes from 0 to all, the producer > throughput decreases. What I am not able to understand is that if the > producer send call is fire and forget in nature and producer is not waiting > for any acknowledgements then why does the producer throughput drops as we > move to stronger acks guarantees? > > Any insights into how acks and producer send call works in Kakfa would be > greatly appreciated. > > Thanks, > Abhishek >
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