gitaly-debug

command
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Published: May 17, 2019 License: MIT Imports: 9 Imported by: 0

README

gitaly-debug

Gitaly-debug provides "production debugging" tools for Gitaly and Git performance. It is intended to help production engineers and support engineers investigate Gitaly performance problems.

Installation

If you're using GitLab 11.6 or newer this tool should be installed on your GitLab / Gitaly server already at /opt/gitlab/embedded/bin/gitaly-debug.

If you're investigating an older GitLab version you can compile this tool offline and copy the executable to your server.

GOOS=linux GOARCH=amd64 go build -o gitaly-debug

Subcommands

simulate-http-clone
gitaly-debug simulate-http-clone /path/to/repo.git

This simulates the server workload for a full HTTP Git clone on a repository on your Gitaly server. You can use this to determine the best-case performance of git clone. An example application is to determine if a slow git clone is bottle-necked by Gitaly server performance, or by something downstream.

The results returned by this command give an indication of the ideal case performance of a git clone on the repository, as if there is unlimited network bandwidth and no latency. This speed will not be reached in real life but it shows the best you can hope for from a given repository on a given Gitaly server.

Documentation

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