Re: [PATCH 2/2] system: Add btrfs file system support.

[ludo@gnu.org (Ludovic Courtès)]

Chris Marusich <cmmarusich@gmail.com> skribis:

> David Craven <david@craven.ch> writes:
>
>> Ludo: Is there any way we can speed up the installer system tests? :)
>
> I've also wondered about this.  I'm not sure how long each test takes to
> run, so an analysis of the tests to find their slow areas might help
> guide us.  I suspect that we could probably speed up the tests by using
> a shared test fixture of some kind (e.g., a common store, or a base qemu
> disk image [1], which could be used by multiple tests), but first we'd
> need to know which part(s) are slow.

Tests that use ‘system-qemu-image/shared-store-script’ (basic, mcron,
openssh, etc.) are relatively fast.

However, the installation tests have to use a real (full, standalone)
image for the installation disk, and also for the target disk.
Otherwise we wouldn’t be testing the same thing.

> Another possibility might be to parallelize the tests (I don't think the
> system tests are done in parallel right now, even if you specify "make
> -j", but someone correct me if I'm wrong), but that could be
> counter-productive if it took up too many system resources.

They are derivation builds, so they are performed in parallel according
to --max-jobs.

Thanks,
Ludo’.