This discussion probably belongs on android-platform; it is not really about the SDK.
On Fri, Nov 19, 2010 at 9:11 AM, d1m_bu1b <[email protected]> wrote: > Thanks for trying to address my question. > I have read all the references you suggested, that is how I have been > able to test its performance. > as I understand it, the answer is: study all the Framwork code and > figure it out yourself. > > > more to consider: > The Binder suggestion better illustrates my concerns and need for > further documentation of design and insight. > Binder/AIDL -> serializable->CORBA-like->(lo, fd, stream, pipe, > shmem... who knows) = painfully slow; remotable objects = security > issues > ContentProvider->SQLite = not so painfully but still slow > I have measured a linear and sequential data access at 60-80 ms cross > partitions for each of 10 applications (<~800ms) > (I went up to 500 clones with interesting results) > It seems like cross partition IPC is impacted by an empirical 20 ms > event timer and also impacted by appplications being started and > stopped. > All this is guesswork in lieu of studying ALL of the code in the > android Framework. > Even when using only three independant applications it takes >100ms > for the simplest of ContentProvider access. > This is all done on baseline Android builds using the N1 > The emulator of course is much much slower but that is understandable. > > > Does anyone have a good reference that discusses tradeoffs, insights, > design etc? > > -- > You received this message because you are subscribed to the Google > Groups "Android Developers" group. > To post to this group, send email to [email protected] > To unsubscribe from this group, send email to > [email protected]<android-developers%[email protected]> > For more options, visit this group at > http://groups.google.com/group/android-developers?hl=en > -- Dianne Hackborn Android framework engineer [email protected] Note: please don't send private questions to me, as I don't have time to provide private support, and so won't reply to such e-mails. All such questions should be posted on public forums, where I and others can see and answer them. -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
