Re: [gate] parallel releasenotes job builds

On 5/16/20 4:39 PM, melanie witt wrote:

Hi all,

We recently merged a change [1] that will run the build-openstack-releasenotes job with 'sphinx-build -j auto' to allow the build to run on multiple CPUs. With the recent releases of reno 3.1.0 and openstackdocstheme 2.1.2, both libraries advertise that they are parallel_read_safe and thus can support the '-j' option.

This effort was inspired by the nova build-openstack-releasenotes job which typically takes 52m to > 1h to run. The job timeout is 1h, so we were occasionally seeing TIMED_OUT job failures.

With parallel sphinx-build, the nova job run time is reduced down to about 15m (awesome!).

Wow, that is better than I was expecting. Great improvement!