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A load-generation and testing tool for key-value stores

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README.org

basho_bench

Overview

Basho Bench is a benchmarking tool created to conduct accurate and repeatable performance tests and stress tests, and produce performance graphs.

Originally developed to benchmark Riak, it exposes a pluggable driver interface and has been extended to serve as a benchmarking tool across a variety of projects.

Basho Bench focuses on two metrics of performance:

  • Throughput: number of operations performed in a timeframe, captured in aggregate across all operation types
  • Latency: time to complete single operations, captured in quantiles per-operation

Quick Start

You must have Erlang/OTP R13B03 or later to build and run Basho Bench, and R to generate graphs of your benchmarks. A sane GNU-style build system is also required if you want to use make to build the project.

git clone git://github.com/basho/basho_bench.git
cd basho_bench
make all

This will build an executable script, basho_bench, which you can use to run one of the existing benchmark configurations from the examples/ directory. You will likely have to make some minor directory changes to the configs in order to get the examples running (see, e.g., the source of the bitcask and innostore benchmark config files for direction).

$ ./basho_bench examples/riakc_pb.config
INFO: Est. data size: 95.37 MB
INFO: Using target ip {127,0,0,1} for worker 1
INFO: Starting max worker: <0.55.0>

At the end of the benchmark, results will be available in CSV format in the tests/current/ directory. Now you can generate a graph:

$ make results
priv/summary.r -i tests/current
Loading required package: proto
Loading required package: reshape
Loading required package: plyr
Loading required package: digest
null device 
          1 
$ open tests/current/summary.png

Customizing your Benchmark

Basho Bench has many drivers, each with its own configuration, and a number of key and value generators that you can use to customize your benchmark. It is also straightforward – with less than 200 lines of Erlang code – to create custom drivers that can exercise other systems or perform custom operations. These are covered more in detail on the Basho wiki.

Benchmarking with riak-java-client

The riak-java-client can be used to benchmark a Riak cluster. There is an example configuration in examples/riakc_java.config. You will need the bench_shim project. You will also need to uncomment and edit the following line in basho_bench’s rebar.config, adding your own erlang cookie value:

%% {escript_emu_args, "%%! -name bb@127.0.0.1 -setcookie YOUR_ERLANG_COOKIE\n"}.

Contributing

We encourage contributions to Basho Bench from the community.

  1. Fork the basho_bench repository on Github.
  2. Clone your fork or add the remote if you already have a clone of the repository.
git clone git@github.com:yourusername/basho_bench.git
# or
git remote add mine git@github.com:yourusername/basho_bench.git
  1. Create a topic branch for your change.
git checkout -b some-topic-branch
  1. Make your change and commit. Use a clear and descriptive commit message, spanning multiple lines if detailed explanation is needed.
  2. Push to your fork of the repository and then send a pull-request through Github.
git push mine some-topic-branch
  1. A Basho engineer or community maintainer will review your patch and merge it into the main repository or send you feedback.
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