Adjust number of Sidekiq processes for GitLab
By Pierre-Alain B on Sunday, February 19 2017, 16:19 - Permalink
By default, GitLab starts 25 processes of Sidekiq. If this certainly makes sense on systems with high load, this could be overkill for simple instances of GitLab with only a handful of users and active projects. To reduce memory usage, it is possible to reduce the number of concurrent processes for Sidekiq by adding the following line to the /path/to/gitlab/config/sidekiq_queues.yml file:
:concurrency: 2