Hello Phillippe, I used to run the "SimpleBenchmark" on my laptop with 4GB also, and it usually used close to, but less than 1GB.
https://www.codatlas.com/github.com/apache/kafka/HEAD/streams/src/test/java/org/apache/kafka/streams/perf/SimpleBenchmark.java Note that I need to bootstrap a real ZK instance and a Kafka instance in order to run that benchmark, and I think those two instances are actually taking the major memory usage than Kafka Streams instance itself. There may be some extra memory overhead from maven framework but I would be surprised if that is taking large amount. Which two test cases specifically are causing OOMs on your laptop? Guozhang On Tue, Jun 14, 2016 at 4:50 PM, Philippe Derome <phder...@gmail.com> wrote: > I am running "mvn test" as per tip from > https://github.com/confluentinc/examples/tree/master/kafka-streams > README.MD. > This uses embedded Kafka components from test alone (no ZK, Kafka, > schema-registry running). > > I monitor on OSX El Capitan (10.11.5) memory usage and it grows on Java > processes from nothing to about 1.3GB when it fails to execute last 2 tests > with Java out of memory exceptions. Selecting 2 tests to avoid makes the > test pass but with my 4GB system, I cannot pass them all. > > Is that relatively large memory consumption to be expected on these test > cases? > > I'd like to run stand-alone from jar and I'll be able to do so by excluding > test cases. > > Fyi, on mailing list I see only 1 issue related to Streams and memory if > that's any relevant (KAFKA-3738). > > Phil > -- -- Guozhang
