- For best performance, we recommend a maximum of 50 pipelines in a single repository. For acceptable performance, we recommend a maximum of 100 pipelines in a single repository. The time required to process a push to a repository increases with the number of pipelines in that repository. Whenever there's push to a repository, Azure Pipelines needs to load all YAML pipelines in that repository to figure out if any of them need to run, and each loaded pipeline incurs a performance penalty.
- Azure Pipelines loads a maximum of 2000 branches from a repository into dropdown lists in the Azure Devops Portal, for example into the Default branch for manual and scheduled builds setting, or when choosing a branch when running a pipeline manually. If you don't see your desired branch in the list, type the desired branch name manually.