Re: [libvirt PATCH] ci: Reduce number of stages

Right now we're dividing the jobs into three stages: prebuild, which includes DCO checking as well as building artifacts such as the website, and native_build/cross_build, which do exactly what you'd expect based on their names. This organization is nice from the logical point of view, but results in poor utilization of the available CI resources: in particular, the fact that cross_build jobs can only start after all native_build jobs have finished means that if even a single one of the latter takes a bit longer the pipeline will stall, and with native builds taking anywhere from less than 10 minutes to more than 20, this happens all the time. Building artifacts in a separate pipeline stage also doesn't have any advantages, and only delays further stages by a couple of minutes. The only job that really makes sense in its own stage is the DCO check, because it's extremely fast (less than 1 minute) and, if that fails, we can avoid kicking off all other jobs. Reducing the number of stages results in significant speedups: specifically, going from three stages to two stages reduces the overall completion time for a full CI pipeline from ~45 minutes[1] to ~30 minutes[2]. [1] https://gitlab.com/abologna/libvirt/-/pipelines/154751893 [2] https://gitlab.com/abologna/libvirt/-/pipelines/154771173 Signed-off-by: Andrea Bolognani <abologna(a)redhat.com&gt; --- .gitlab-ci.yml | 19 +++++++++---------- 1 file changed, 9 insertions(+), 10 deletions(-)