melanie witt b892aad548 Run sphinx-build in parallel for releasenotes
Since the recent releases and upper-constraints bumps for
openstackdocstheme 2.1.0 and reno 3.1.0, both sphinx extensions now
support safe parallel reading.

This adds the '-j auto' option to the sphinx-build command for building
release notes to parallelize the build over multiple CPUs.

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
are occasionally seeing TIMED_OUT job failures.

With parallel sphinx-build, the job run time is reduced down to 15m.

Change-Id: If3c615119b1a72ce294e22685ddc2dcd6b63f4a0
2020-05-15 00:35:29 +00:00
..
2020-04-20 17:44:49 +02:00
2020-04-20 17:44:49 +02:00
2019-07-17 15:45:24 +00:00
2019-09-09 18:14:00 +10:00
2020-04-17 10:45:15 +02:00
2020-05-06 07:54:30 +02:00
2019-07-17 15:45:24 +00:00
2020-05-04 17:47:11 +01:00
2020-01-07 17:12:15 +00:00
2020-02-21 06:55:47 -06:00
2020-05-09 14:03:51 -05:00
2019-11-20 20:27:21 +01:00
2017-11-14 13:19:08 +00:00
2020-05-04 17:47:11 +01:00
2020-05-03 19:06:37 +00:00
2019-07-17 15:45:24 +00:00
2020-05-04 17:47:11 +01:00
2018-08-17 10:23:20 +10:00