I'm using git and TeamCity v6.0 in a Windows environment.
I have just switched over from server side checkouts to checkout on agents because of IO issues, however...
Initial checkout has become exceeding slow from ~ a minute to >45 minutes. Once the repo is cloned everything is OK. Is there some configuration on the agents I can tweak to improve this? Thanks for any replies in advance.
What I see is the initial git files created on the agent and then there is a very long pause and then I get all my data. I can see from the process explorer that git appears to be doing very little and there is no obvious source of throttling.
One thing that can cause a slowdown is java ssh implementation used with agent-side checkout, to turn it off set an agent property teamcity.git.use.native.ssh=true.
Also you can set an agent property teamcity.git.use.local.mirrors=true, in this case TeamCity will create a bare clone of your repository and will update build directory from this bare clone instead of github, i.e. initial clone will be done only once.