Browser and install GUI for cookiecutter templates

⌈⌋ ⎇ branch:  cookiedough


Help: max-loadavg

The "max-loadavg" setting:

Some CPU-intensive web pages (ex: /zip, /tarball, /blame) are disallowed if the system load average goes above this value. "0.0" means no limit. This only works on unix. Only local settings of this value make a difference since when running as a web-server, Fossil does not open the global configuration database.