debian-mirror-gitlab/doc/user/analytics/value_stream_analytics.md

stage	group	info
Manage	Optimize	To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#assignments

Value Stream Analytics (FREE)

• Introduced as Cycle Analytics prior to GitLab 12.3 at the project level.
• Introduced in GitLab Premium 12.3 at the group level.
• Renamed from Cycle Analytics to Value Stream Analytics in GitLab 12.8.

Value Stream Analytics measures the time spent to go from an idea to production (also known as cycle time) for each of your projects or groups. Value Stream Analytics displays the median time spent in each stage defined in the process.

You can use Value Stream Analytics to determine the velocity of a given project. It points to bottlenecks in the development process, enabling management to uncover, triage, and identify the root cause of slowdowns in the software development life cycle.

For information about how to contribute to the development of Value Stream Analytics, see our contributor documentation.

Project-level Value Stream Analytics is available by using Project > Analytics > Value Stream.

NOTE: Group-level Value Stream Analytics is also available.

Default stages

The stages tracked by Value Stream Analytics by default represent the GitLab flow. You can customize these stages in group-level Value Stream Analytics.

• Issue (Tracker)
  • Time to schedule an issue (by milestone or by adding it to an issue board)
• Plan (Board)
  • Time to first commit
• Code (IDE)
  • Time to create a merge request
• Test (CI)
  • Time it takes GitLab CI/CD to test your code
• Review (Merge request)
  • Time spent on code review
• Staging (Continuous Deployment)
  • Time between merging and deploying to production

Date ranges

To filter analytics results based on a date range, select different From and To days from the date picker (default: last 30 days).

How Time metrics are measured

The Time metrics near the top of the page are measured as follows:

• Lead time: Median time from issue created to issue closed.
• Cycle time: Median time from first commit to issue closed. (You can associate a commit with an issue by crosslinking in the commit message.)

How the stages are measured

Value Stream Analytics uses start events and stop events to measure the time that an issue or merge request spends in each stage. For example, a stage might start when one label is added to an issue and end when another label is added. Items aren't included in the stage time calculation if they have not reached the stop event.

Stage	Description
Issue	Measures the median time between creating an issue and taking action to solve it, by either labeling it or adding it to a milestone, whichever comes first. The label is tracked only if it already includes an Issue Board list created for it.
Plan	Measures the median time between the action you took for the previous stage, and pushing the first commit to the branch. That first branch commit triggers the separation between Plan and Code, and at least one of the commits in the branch must include the related issue number (such as #42). If the issue number is not included in a commit, that data is not included in the measurement time of the stage.
Code	Measures the median time between pushing a first commit (previous stage) and creating a merge request (MR). The process is tracked with the issue closing pattern in the description of the merge request. For example, if the issue is closed with Closes #xxx, it's assumed that xxx is issue number for the merge request). If there is no closing pattern, the start time is set to the create time of the first commit.
Test	Essentially the start to finish time for all pipelines. Measures the median time to run the entire pipeline for that project. Related to the time required by GitLab CI/CD to run every job for the commits pushed to that merge request, as defined in the previous stage.
Review	Measures the median time taken to review merge requests with a closing issue pattern, from creation to merge.
Staging	Measures the median time between merging the merge request (with a closing issue pattern) to the first deployment to a production environment. Data not collected without a production environment.

How this works:

1. Issues and merge requests are grouped in pairs, where the merge request has the closing pattern for the corresponding issue. Issue and merge request pairs without closing patterns are not included.
2. Issue and merge request pairs are filtered by the last XX days, specified through the UI (default is 90 days). Pairs outside the filtered range are not included.
3. For the remaining pairs, review information needed for stages, including issue creation date and merge request merge time.

In short, the Value Stream Analytics dashboard tracks data related to GitLab flow. It does not include data for:

• Merge requests that do not close an issue.
• Issues that do not include labels present in the Issue Board
• Issues without a milestone.
• Staging stages, in projects without a production environment.

How the production environment is identified

Value Stream Analytics identifies production environments based on the deployment tier of environments.

Example workflow

Here's a fictional workflow of a single cycle that happens in a single day, passing through all seven stages. If a stage doesn't have a start and a stop mark, it isn't measured and hence isn't calculated in the median time. It's assumed that milestones are created, and CI for testing and setting environments is configured.

1. Issue is created at 09:00 (start of Issue stage).
2. Issue is added to a milestone at 11:00 (stop of Issue stage and start of Plan stage).
3. Start working on the issue, create a branch locally, and make one commit at 12:00.
4. Make a second commit to the branch that mentions the issue number at 12:30 (stop of Plan stage and start of Code stage).
5. Push branch, and create a merge request that contains the issue closing pattern in its description at 14:00 (stop of Code stage and start of Test and Review stages).
6. The CI starts running your scripts defined in .gitlab-ci.yml and takes 5 minutes (stop of Test stage).
7. Review merge request, ensure that everything is okay, and then merge the merge request at 19:00 (stop of Review stage and start of Staging stage).
8. The merge request is merged, and a deployment to the production environment starts and finishes at 19:30 (stop of Staging stage).

From the previous example we see the time used for each stage:

• Issue: 2 hrs (09:00 to 11:00)
• Plan: 1 hr (11:00 to 12:00)
• Code: 2 hrs (12:00 to 14:00)
• Test: 5 mins
• Review: 5 hrs (14:00 to 19:00)
• Staging: 30 mins (19:00 to 19:30)

More information:

• Although the previous example specifies the issue number in a later commit, the process still collects analytics data for the issue.
• The time required in the Test stage isn't included in the overall time of the cycle. The time is included in the Review process, as every merge request should be tested.
• The previous example illustrates only one cycle of the multiple stages. Value Stream Analytics, on its dashboard, shows the calculated median elapsed time for these issues.

Permissions

The permissions for the project-level Value Stream Analytics dashboard include:

Project type	Permissions
Public	Anyone can access
Internal	Any authenticated user can access
Private	Any member Guest and above can access

You can read more about permissions in general.

More resources

Learn more about Value Stream Analytics with the following resources:

• Value Stream Analytics feature page.
• Value Stream Analytics feature preview.
• Value Stream Analytics feature highlight.