Knapsack Pro

TeamCity vs Buildkite comparison of Continuous Integration servers
What are the differences between TeamCity and Buildkite?

TeamCity

https://www.jetbrains.com/teamcity/

Buildkite

https://buildkite.com
Unique feature

Technology awareness

Runs on own infrastructure, API

Type of product

On Premise

SaaS

Offers a free plan

Yes

They offer a great free professional plan, limited to 100 build configurations and 3 build agents. From there, you pay for each aditional agent you want (discounts if you purchase more than 1 agent at a time). They also provide a free plan for open source, non commercial projects, and steep 50% discounts for startups.

Yes

Free for open source projects and selected organizations
Predictable pricing

Yes

They have a clear list of prices per number of agents.

Yes

Clearly defined monthly and annual plans
Support / SLA

Yes

Yes

Depending on the plan, ranging from community support, all the way to an assigned Technical Manager, SLAs and live chat support.
Paralellism
Every CI servers tends to address this differently (parallel, distributed, build matrix). Some of it is just marketing, and some is just nuance. For this table, parallel means that tasks can be run concurrently on the same machine, distributed means that tasks can be scaled horizontally, on multiple machines
How to split tests in parallel in the optimal way with Knapsack Pro

Yes

Yes

Run an unlimited number of concurrent agents, and an unlimited number of concurrent jobs. You can run your tests in isolated Docker container per agent.
Distributed builds
distributed means that tasks can be scaled horizontally, on multiple machines
How to split tests in parallel in the optimal way with Knapsack Pro

N/A

No specific mention that we could find, but judging by the wording used it would appear that tasks can be divided accross different machines.

Yes

Run an unlimited number of concurrent agents, and an unlimited number of concurrent jobs
Containers support / Build environment

Yes

First class Docker support, among others

Yes

Since the agents run on your own infra, you're free to do whatever
Analytics / Status overview
Analytics and overview referrs to the ability to, at a glance, see what's breaking (be it a certain task, or the build for a specific project)

Yes

Great system overview, even allows building your own dashboards in order to see everything you're interested in at a glance.

Yes

The Buildkite UI features great vizualisations that feature build times, error rates, and more.
Management support
How easy is it to manage users / projects / assign roles and permissions and so on

Yes

Allows assigning roles, LDAP and Windows domain integrations and more.

Yes

Self-hosted option

Yes

No

Hosted plans / SaaS

No

Yes

Build pipelines
A continuous delivery pipeline is a description of the process that the software goes through from a new code commit, through testing and other statical analysis steps all the way to the end-users of the product.

Yes

Unlike most options in the CI/CD space, TeamCity allows defining pipelines using a Kotlin-based DSL. This unlocks a lot of potential, such as templates for common CI/CD tasks, and deep integration with various IDEs (not just JetBrains IDEs)

Yes

Pipelines are defined using an Yaml config file and allow for great flexibility in defining what each step of the process does.
Reports
Reports are about the abilty to see specific reports (like code coverage or custom ones), but not necesarily tied in into a larger dashboard.

Yes

Something that stands out from the rest, allows integrating third party reports, as long as they produce HTML output.

Yes

Ecosystem
Besides the official documentation and software, is there a large community using this product? Are there any community-driven tools / plugins that you can use?

Yes

JetBrains has a rich ecosystem of plugins in general.

Yes

Integrations for GitHub, GitLab, BitBucket as well as SSO support (Google Suite, SAML, GraphQL API). Growing number of community plugins: https://buildkite.com/plugins
Specific language support: Ruby
Some CI servers have built-in support for parsing RSpec or Istanbul output for example and we mention those. Some others make it even easier by detecting Gemfiles or package.json and automate parts of the process for the developer.

Yes

Using what they call 'Technology Awareness', promises great intehration with Ruby projects, with features such as testing framework support, static analysis and code coverage available out of the box, with no additional work required: https://www.jetbrains.com/teamcity/features/technology_awareness.html

Yes

You can find useful plugins like https://github.com/sj26/rspec-buildkite https://github.com/ticky/simplecov-buildkite etc
Specific language support: JavaScript

No (partial)

Unlike Ruby, there's no first class support for Javascript, although they do advertise the fact that their large collections of plugins can cover any use case for Javascript projects: https://plugins.jetbrains.com/teamcity

No

Integrations
1st party support for common tools (like Slack notifications, various VCS platforms, etc)

Yes

Great cloud integrations (Google Cloud, AWS, VMWare, etc) as well as 'key' integrations (VSCode, Jira, even NuGet)

Yes

Integrations for GitHub, GitLab, BitBucket as well as SSO support (Google Suite, SAML, GraphQL API)
API
Custom integreation is available, via an API or otherwise, it's mentioned separately as it allows further customization than any of the Ecosystem/Integration options

Yes

Unlike most tools, which offer just a Rest API, TeamCity provides ample opportunity for extension via plugins, their own API, and service messages (formatted messages on stdout)

Yes

Great GraphQL API, allows building your own dashboard with ease
Auditing

Yes

Yes

Additional notes

Great ecosystem, with a strong focus on integration with other tools (not only JetBrains).

How to run parallel tests on TeamCity and Buildkite
to execute 1-hour test suite in 2 minutes?

Without Knapsack Pro

you have to wait 20 minutes for slow tests running too long on the red node

Loading...

Run fast parallel CI build with Knapsack Pro

CI build completes work in only 10 minutes because Knapsack Pro ensures all parallel nodes finish work at a similar time

Loading...

You can even run 20 parallel nodes to complete your CI build in 2 minutes

How it works

Step 1

Install Knapsack Pro client in your project


Step 2

Update your CI server config file to run tests in parallel with Knapsack Pro


Step 3

Run a CI build with parallel tests using Knapsack Pro

Diagram that shows files distributed to 3 parallel CI nodes


Knapsack Pro in Queue Mode splits tests in a dynamic way across parallel CI nodes to ensure each CI node finishes work at a similar time. Thanks to that, your CI build time is as fast as possible. It works with many supported CI servers.

How to install it

Programming Language Supported test runners Installation guide Knapsack Pro Library
README / Source
Ruby RSpec, Cucumber, Minitest, test-unit, Spinach, Turnip Install knapsack_pro gem
JavaScript Cypress.io Install @knapsack-pro/cypress
JavaScript Jest Install @knapsack-pro/jest
JavaScript / TypeScript Any test runner in JavaScript How to build native integration with Knapsack Pro API to run tests in parallel for any test runner @knapsack-pro/core
Any programming language Any test runner How to build a custom Knapsack Pro API client from scratch in any programming language -

Do you use other programming language or test runner? Let us know.

Do you know

Start using Knapsack Pro

Sign up and speed up your tests.

Get faster feedback from TeamCity and Buildkite server

  • save time & money
  • deliver features faster
  • catch errors earlier
Knapsack Pro terminal

Buildkite parallel agents and how to use them for CI parallelisation

Buildkite parallelism integration

Introduction to CI parallelisation with Knapsack Pro

Run tests in parallel on TeamCity and Buildkite in the optimal way and avoid bottleneck parallel jobs.

How much can you save with faster tests
on TeamCity and Buildkite?

minutes
$

Monthly you can save hours
and up to $
on faster development cycle.

Features that make your tests perform better

Discover all features or see
how to use Knapsack Pro with your CI

Trusted solution

Join the teams optimizing their tests with Knapsack Pro.

We've been really enjoying Knapsack Pro, it's been saving us a ton of time.

Devin Brown Software Engineer at Pivotal

This is a fantastic product, it's been a total game-changer for us.

Geoff Harcourt CTO at CommonLit

We are using CircleCI and we noticed that builds were being limited by the slowest parallelized container. Knapsack Pro was really east to setup and we saw huge improvements right away. Thank you for making this tool!

Martin Sieniawski Software Engineer at Collage

Knapsack Pro has helped us build an insanely fast and scalable build pipeline with almost no setup or maintenance.

Tim Lucas Co-founder of buildkite.com

Knapsack Pro saves us hours of engineer waiting time every week, and is the best solution for keeping our tests load balanced that we've used to date.

Michael Amygdalidis Senior Software Engineer at Popular Pays

I've been playing with Queue Mode. Love it! Wow, I love how fast it goes.

Michael Menne CTO at humanagency.org

I just logged into my account expecting it to say that I needed to add a credit card and was so surprised and delighted to see the trial doesn't count usage by calendar days but by testing days! This is incredible! I love it!!!

I just wanted to say that I really appreciate that small but very huge feature. Thank you for being so thoughtful :)

Shannon Baffoni Senior Software Engineer
at Blue Bottle Coffee

See more testimonials

Start using Knapsack Pro with TeamCity or Buildkite

Sign up and speed up your tests.