Hi Brian,
On Thu, Aug 12, 2010 at 8:33 PM, Brian Swetland <swetland@google.com> wrote:
Look. I'll share with you a little experience.
For years I've been working on a piece of software to access
Microsoft's WLM IM service on linux. I have high quality standards for
my software, so I optimized algorithms and bandwith, I used valgrind
to find memory leaks, OProfile for performance bottlenecks, and so on.
All this on a laptop.
When I ported this code to the N900 it just worked, not more-or-less;
perfectly. I could stay online the whole day without the battery
running out, and I didn't have to make *any* change.
Then at some point people started complaining about battery usage, but
lo and behold, on the desktop people started reporting too much
bandwith/cpu usage as well. I tried on my laptop, and was able to
reproduce, and fix (bug related to daylight savings time).
For years people have been trying to unify certain KDE/GNOME code, and
freedesktop.org was born. Now the same technologies are used by Nokia
on Maemo, and now MeeGo (DBus, Telepathy, GStreamer, tracker, etc.),
so the optimizations done for mobile benefit everyone; desktop power
usage also improves.
So, yeah, I think the fact that my laptop and phone share the same
software is great, and that improvements in one benefit the other.
Why do you keep ignoring the N900? It has a lot of components that
come directly from the linux ecosystem and people are having more than
reasonable experiences (some are ecstatic).
Nobody is waiting for anything. There's hard work all over the place
to improve power usage.
If you think suspend blockers are useful for you, great, use them. I
just don't see why they should be merged if nobody is going to use
them but you. But maybe you are right, and maybe dynamic PM alone
never reaches the same levers of performance, then people would ask
for it to be merged, and it will. No biggie.
In the meantime, it would be wise to remember that this is not
Nokia/Intel vs Google. Nokia has invested a great deal in dynamic PM,
and those changes have benefited Android products directly (I even
remember somebody from Google directly thanking Nokia for that), and
that will continue. So we are on the same team.
And finally, if they don't get merged, I hope you don't see that as a
loss. At the very least I think you got a lot of review comments from
the most qualified experts in the world _free of charge_, and as a
result the code should be more robust.
Cheers.
--
Felipe Contreras
--
