#Custom JMeter sampler for Couchbase
This is a custom java sampler class that can be used to benchmark Couchbase. It was tested against Couchbase Enterprise 2.5.1
Version 0.1 (alpha)
Written by: Alex Bordei Bigstep (alex at bigstep dt com)
##Dependencies:
- apache jmeter sources 2.11
- couchbase java client
##How to use Copy the file over inside the sources. You will need to copy over ./lib/opt and ./lib. some of the jars from the SDK. You need to also copy them in both locations.For some reason the compilation works but the jars from/opt do not get distributed.
- commons-codec-1.5.jar
- couchbase-client-1.4.3.jar
- httpcore-4.3.jar
- httpcore-nio-4.3.jar
- jettison-1.1.jar
- netty-3.5.5.Final.jar
- spymemcached-2.11.4.jar
ant package-only
Run jmeter as ususual from the newly created bin file.
sh ./bin/jmeter.sh
Add a new jmeter Java sampler, use the com.bigstep.CBSampler class.
Configure your couchbase credentials and everything
The response times of most Couchbase installations are sub-millisecond and thus jmeter by default will only record 0 for sub millisecond samples making any graphing or higher resolution analysis useless. What we did was to implement a nanosecond time counter inside the sampler that is returned as a message on the 5th column of the output csv. We use System.nanoTime() for this.