Service Level Objectives #
Packit is using the concept of Service level objectives defined in Google’s SRE book. It means that when we run out of error budget, we stop all the work on new features and start stabilizing the service to get our budget back.
We have 3 objectives defined for Packit right now.
Screenshots below are not being updated in real time. They are just a snapshot of the state in time when this document was written so that you can see some actual numbers.
SLO1: Changes to GitHub PRs receive a status update within 15 seconds in 99% of cases #
We want you to know as soon as possible that Packit is working on your request.
SLO2: 98% of builds have status set to success or failure within 12 hours #
Once Packit works on a build, you should see that the work is done within a reasonable time.
SLO3: 95% of test runs have status set to success or failure within 12 hours #
The same as SLO2 except this is for tests. Testing Farm is a more complex system so we reduced the number here.
If you are interested, here’s the accompanying research: github.com/packit/research/../error-budgets
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