PgBenchmark

A Postgres benchmarking tool

Installation

Add this line to your application's Gemfile:

gem 'pg_benchmark'

And then execute:

$ bundle

Or install it yourself as:

$ gem install pg_benchmark

Usage

$ bundle exec pgb [database_name] [benchmark_name] [records]

pg_benchmark searches the current working directory, then recursively up the hierachy for a directory called pg_benchmarks. Once found it expects a directory matching [benchmark_name] where it will execute .sql files with the following order:

1. drop_schema.sql (required)
2. create_schema.sql (required)
3. create_constraints.sql (optional)
4. create_indexes.sql (optional)
5. create_triggers.sql (optional)
6. insert_data.sql (optional)
7. snapshot.sql (optional)
8. benchmark.sql (required)
9. drop_schema.sql (required)

It logs information including: progress, record counts and the data snapshot to stderr. And the time to run benchmark.sql to stdout.

$ bundle exec pgb benchmark_database triggers 1_000
dropping schema...
creating schema...
inserting data...
creating constraints...
creating indexes...
creating triggers...
--------------------
activities count: 100
completions count: 10000
course_attempts count: 1000
courses count: 1
sections count: 10
--------------------
{"progress"=>"0.000"}
--------------------
starting benchmark
finished benchmark
--------------------
activities count: 101
completions count: 10000
course_attempts count: 1000
courses count: 1
sections count: 10
--------------------
{"progress"=>"0.099"}
--------------------
dropping schema...
0.3970880000015313

If you would like to hide the debug information you can redirect stderr to /dev/null.

$ bundle exec pgb benchmark_database triggers 1_000 2> /dev/null
0.3970880000015313

Examples

• Insert N Records
• Index N Records
• Index N Records Concurrently

Development

After checking out the repo, run bin/setup to install dependencies. Then, run rake spec to run the tests. You can also run bin/console for an interactive prompt that will allow you to experiment.

To install this gem onto your local machine, run bundle exec rake install. To release a new version, update the version number in version.rb, and then run bundle exec rake release, which will create a git tag for the version, push git commits and tags, and push the .gem file to rubygems.org.

Contributing

Bug reports and pull requests are welcome on GitHub at https://github.com/schoolkeep/pg_benchmark.

License

The gem is available as open source under the terms of the MIT License.