It's built into GitLab itself, it's not an external tool you can install without using GitLab. Some information about it can be found at http://doc.gitlab.com/c

It's built into GitLab itself, it's not an external tool you can install without using GitLab. Some information about it can be found at http://doc.gitlab.com/ce/development/profiling.html#sherlock http://doc.gitlab.com/ce/development/profiling.html#sherlock.