It was on my radars several times, and now we have an issue in JENKINS-44229 where the Installer GUI propagation seems to take more than 30 seconds due to whatever reason. Likely it is caused by multiple calls by installers checking the SlaveInstallerFactor feasibility.

Usages: https://github.com/search?q=org%3Ajenkinsci+SlaveInstallerFactory&type=Code

Proposals:

• ComputerLauncher class should define a new isHeadless() method
• SlaveInstaller module should check the flag and skip installation if the GUI installer is not required