Micael Capitão created KAFKA-2202:
-------------------------------------
Summary: ConsumerPerformance reports a throughput much higher than
the actual one
Key: KAFKA-2202
URL: https://issues.apache.org/jira/browse/KAFKA-2202
Project: Kafka
Issue Type: Bug
Components: tools
Affects Versions: 0.8.2.0
Reporter: Micael Capitão
Priority: Minor
I've been using the kafka.tools.ConsumerPerformance tool for some benchmarking
until in one of my tests I got a throughput much higher than the supported by
my network interface.
The test consisted in consuming around ~4900 MB from one topic using one
consumer with one thread. The reported throughput reported was ~1400 MB/s which
surpasses the 10 Gbps of the network. The time for the whole operation was ~8
seconds, which should correspond to a throughput of ~612 MB/s.
Digging the ConsumerPerformance code, I've found this at line 73:
{code:java}
val elapsedSecs = (endMs - startMs - config.consumerConfig.consumerTimeoutMs) /
1000.0
{code}
The {{consumerTimeoutMs}} defined as 5000 at line 131 is always considered
leading to wrong results.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
