Run Pipeline page (/pipelines/new) is slow to load
Summary
This was reported by a customer. Refer ZD(internal) for more details.
The project in question has more than 2400 branches and 30,000 tags.
Doing a profiling on the page reveals that DOMContentLoaded takes around 17 seconds while the page finishes loading in 18 seconds.
Relevant profiling details below:
<snip>
"https://gitlab.example.com/namespace/project/-/pipelines/new"
"active-record: 40ms"
"es: 0ms"
"gitaly: 0ms"
"host: null"
"redis: 748ms"
"total: 3197 | 3170 | 20976"
--
"/namespace/project/-/pipelines/config_variables"
"active-record: 4ms"
"es: 0ms"
"gitaly: 0ms"
"host: null"
"redis: 1ms"
</snip>Steps to reproduce
Can be partially reproduced by visiting: https://gitlab.com/gitlab-org/gitlab/-/pipelines/new
Example Project
https://gitlab.com/gitlab-org/gitlab/
What is the current bug behavior?
DOMContentLoaded takes long so that the Run Pipeline page is loading slow.
What is the expected correct behavior?
Run Pipeline page should load faster.
Relevant logs and/or screenshots
Browser freezes on this screen until the page is loaded.
 |
Output of checks
This bug happens on GitLab.com as well.
Results of GitLab environment info
Expand for output related to GitLab environment info
(For installations with omnibus-gitlab package run and paste the output of: `sudo gitlab-rake gitlab:env:info`) (For installations from source run and paste the output of: `sudo -u git -H bundle exec rake gitlab:env:info RAILS_ENV=production`)
Results of GitLab application Check
Expand for output related to the GitLab application check
(For installations with omnibus-gitlab package run and paste the output of:
sudo gitlab-rake gitlab:check SANITIZE=true)(For installations from source run and paste the output of:
sudo -u git -H bundle exec rake gitlab:check RAILS_ENV=production SANITIZE=true)(we will only investigate if the tests are passing)