Hey folks,
I was checking today what we could do to optimize the job runs at LAVA, and noticed that the time it takes to download and cache the tarball is still the biggest bottleneck we have.
Checking job http://validation.linaro.org/lava-server/scheduler/job/23135, you can see at the top of the serial log that it took almost one hour just to download and cache the tarball. As I believe this could also be related with the connection we have available at the lab, and as we're caching the tarballs already, wouldn't it be possible to use zsync or a similar tool to speed up the download?
For the pre-built images we're already generating the zsync meta-data file together with the image itself, so would be nice to check if that would really make any difference from the lab perspective.
Thanks,