790895 - Switch off prefetching for Vagrant's initial import-buildbot-data.py run, to avoid prefetching the world

Status: RESOLVED FIXED

(Tree Management Graveyard :: TBPL, defect)

Description

[Ed Morley [:emorley]]

At the moment, using TBPL's Vagrant project file causes an import of the last two days worth of results, which was fine up until the point where we started prefetching everything on import.

We should add an option to import but not prefetch, so the initial Vagrant load doesn't take 15+ minutes (and time out with the default Vagrant settings; not that we want to raise them, since setting up the VM needs to be quick). The subsequent cron imports can then prefetch just new results.

Comment 1

[Ed Morley [:emorley]]

Swatinem pointed out we can just use -w 0 :-)

Comment 2

[Ed Morley [:emorley]]

Attachment: Use '-w 0' and only import 1 day

* Only imports 1 day, not 2
* Switches off prefetching for this import (the cron isn't affected)

-> Reduces the initial 'Vagrant up' from 10-15 mins + (which times out) to a more manageable ~2 mins.

Comment 3

[Ed Morley [:emorley]]

Landed with r=me since trivial and doesn't affect production.

http://hg.mozilla.org/users/mstange_themasta.com/tinderboxpushlog/rev/bb3786ddf460