I don't think it works that way. At least it doesn't for me, these time issues 
don't work that way. There's a context switch involved, those are expensive and 
there's the feeling of pulling in 2.5 gigs+ onto your hard drive to do 
something small, for someone else really, not because you get paid for it. 
Especially when you're for example on a conference with a poor network 
connection. As another example, currently pushing to try is a very conscious 
decision for me. Is this test result worth it if it's going to take me 4 hours 
to get the results on all platforms? I'll have to look at it again tomorrow, 
maybe I should look a little more if I've done everything to make sure it 
works. Because I know that by pushing that try run I'm going to put a lot of 
burden on our infrastructure to see if a small change compiles on all platforms.

Additionally all -other- operations on a larger repository are a lot slower, 
things like top-level diffs, updates, etc. They take seconds or less on small 
repository, every step of your workflow is more efficient in a more isolated 
environment. Bisecting is only a small example of this, bisecting inside a 
small repository with a fast build/test is a process that's done very quickly 
and is very easy to justify timewise. Bisecting mozilla-central is a hard task 
that takes a lot of time.

Bas

----- Original Message -----
From: "Robert O'Callahan" <rob...@ocallahan.org>
To: "Bas Schouten" <bschou...@mozilla.com>
Cc: "dev-platform" <dev-platform@lists.mozilla.org>
Sent: Wednesday, March 27, 2013 10:36:34 PM
Subject: Re: Moz2D Repository Creation

On Thu, Mar 28, 2013 at 11:25 AM, Bas Schouten < bschou...@mozilla.com > wrote: 



I would argue this is probably true. As I've talked to a developer from a large 
third party where the discussion of if they would try to adjust their work to 
Moz2D literally ended at: 'I have to check out -all- of firefox? How big is 
that 2 Gig or something?' I think it's certainly the largest practical and 
mental barrier. 


I find that difficult to understand. Mostly that just means you go to lunch 
while your "hg clone" runs. Maybe it's a mental thing but I don't think that 
should be a driver of our strategy hear. 

Rob 
-- 
Wrfhf pnyyrq gurz gbtrgure naq fnvq, “Lbh xabj gung gur ehyref bs gur Tragvyrf 
ybeq vg bire gurz, naq gurve uvtu bssvpvnyf rkrepvfr nhgubevgl bire gurz. Abg 
fb jvgu lbh. Vafgrnq, jubrire jnagf gb orpbzr terng nzbat lbh zhfg or lbhe 
freinag, naq jubrire jnagf gb or svefg zhfg or lbhe fynir — whfg nf gur Fba bs 
Zna qvq abg pbzr gb or freirq, ohg gb freir, naq gb tvir uvf yvsr nf n enafbz 
sbe znal.” [Znggurj 20:25-28] 
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