RoadRunner is a workload generator written in Java for Couchbase Server. It is intended to be used as a standalone jar. It provides support for customizing lots of aspects, like number of threads per CouchbaseClient, number of CouchbaseClients, amount of docs to store and so on.
Running the jar with -h shows the supported options:
$ java -jar target/RoadRunner-1.0.jar -h
usage: roadrunner
-b,--bucket <arg> Name of the bucket (default: "default").
-c,--num-clients <arg> Number of CouchbaseClient objects (default:
"1").
-d,--num-docs <arg> Number of documents to work with (default:
"1000").
-h,--help Print this help message.
-n,--nodes <arg> List of nodes to connect, separated with ","
(default: "127.0.0.1").
-p,--password <arg> Password of the bucket (default: "").
-r,--ratio <arg> Ratio - depending on workload (default: "1").
-t,--num-threads <arg> Number of worker threads per CouchbaseClient
object (default: "1").
When used without any argument, it will run against 127.0.0.1, use
the default bucket with no password. It will store 1000 documents
and run one get after each set (1:1 ratio). The output looks like
this:
13:50:58.960 [main] INFO com.couchbase.roadrunner.RoadRunner - Running with Config: GlobalConfig{nodes=[http://127.0.0.1:8091/pools], bucket=default, password=, numThreads=1, numClients=1, numDocs=10, ratio=1}
13:50:58.963 [main] INFO com.couchbase.roadrunner.RoadRunner - Initializing ClientHandlers.
13:50:59.191 [main] INFO com.couchbase.roadrunner.RoadRunner - Running Workload.
13:50:59.211 [main] INFO com.couchbase.roadrunner.RoadRunner - Finished running Workload in 20ms.
13:50:59.214 [main] INFO com.couchbase.roadrunner.RoadRunner - #### Percentile (in microseconds) for get:
13:50:59.214 [main] INFO com.couchbase.roadrunner.RoadRunner - 5%: 341.0
13:50:59.214 [main] INFO com.couchbase.roadrunner.RoadRunner - 25%: 364.0
13:50:59.214 [main] INFO com.couchbase.roadrunner.RoadRunner - 50%: 383.5
13:50:59.214 [main] INFO com.couchbase.roadrunner.RoadRunner - 75%: 386.0
13:50:59.214 [main] INFO com.couchbase.roadrunner.RoadRunner - 95%: 1702.0
13:50:59.214 [main] INFO com.couchbase.roadrunner.RoadRunner - 99%: 1702.0
13:50:59.214 [main] INFO com.couchbase.roadrunner.RoadRunner - #### Percentile (in microseconds) for set:
13:50:59.214 [main] INFO com.couchbase.roadrunner.RoadRunner - 5%: 371.0
13:50:59.214 [main] INFO com.couchbase.roadrunner.RoadRunner - 25%: 385.125
13:50:59.214 [main] INFO com.couchbase.roadrunner.RoadRunner - 50%: 419.0
13:50:59.214 [main] INFO com.couchbase.roadrunner.RoadRunner - 75%: 492.5
13:50:59.214 [main] INFO com.couchbase.roadrunner.RoadRunner - 95%: 2177.5
13:50:59.215 [main] INFO com.couchbase.roadrunner.RoadRunner - 99%: 2177.5
The workload here finished in 20ms. You can also find the percentile
recordings, note that they are in microseconds, not milliseconds! This
means that 75% of all set requests finished in 0.49ms and 95% in
2.1ms. This output format is currently not customizable.
The project is a simple maven project, but it has a dependency onto
hist4j to calculate the
percentiles. This dependency is not in maven, so you need to get it
into your local repo. Clone the source, build it and store it into
your local .m2 repo. It will then be picked up during build.
michael@daschlbook ~/histogram $ git clone https://github.com/flaptor/hist4j.git
michael@daschlbook ~/histogram $ cd hist4j/
michael@daschlbook ~/histogram/hist4j $ ant jar
michael@daschlbook ~/histogram/hist4j $ mvn install:install-file -Dfile=output/hist4j-trunk.jar -DgroupId=com.flaptor -DartifactId=hist4j -Dversion=1.0 -Dpackaging=jar
...
[INFO] Installing /Users/michael/histogram/hist4j/output/hist4j-trunk.jar to /Users/michael/.m2/repository/com/flaptor/hist4j/1.0/hist4j-1.0.jar
...
Then, clone the RoadRunner project and build it through maven:
michael@daschlbook ~/couchbase/RoadRunner $ mvn package
You'll find the corresponding JAR files in the target directory. The
large one (few megs) is with all dependencies included, ready to be
distributed. If you want to use the other one, make sure you have all
libs in your classpath!