[ovirt-devel] Vdsm tests are 4X times faster on travis

[Barak Korren]

> Here are builds that do not change the build system:
> - http://jenkins.ovirt.org/job/vdsm_master_check-patch-fc24-x86_64/5767/console:
> 10:07
> - http://jenkins.ovirt.org/job/vdsm_master_check-patch-el7-x86_64/4157/console:
> 10:16
>
> So we about 2X times faster now.

Awesome! also for fc24:

22:11:22 Init took 73 seconds

22:13:45 Install packages took 143 seconds

So 3m 36s, our pending patches can probably bring that down to around
20s. That will get us to around 7m...
Maybe we could shave some more seconds off by optimizing the git clone
and making some of the cleanups happen less frequently.
(It seems we spend 16s total outside of mock_runner.sh, so perhaps not
much to gain there).

So any more ideas where we can get extra 2-3m?

Things we didn`t try yet:
1. Ensure all downloads happen through the proxy (there is a patch
pending, but some tweaking in check_patch.sh may be needed as well)
2. Run mock in tmpfs (it has a plugin for that)
3. Avoid setting some FS attributes on files (mock is configured for
that but we don't install the OS package needed to make that actually
work)

Nut sure any of the above will provide significant gains though.

-- 
Barak Korren
bkorren at redhat.com
RHCE, RHCi, RHV-DevOps Team
https://ifireball.wordpress.com/