dianne , what about launchperf in the samples directory


On Thu, Apr 23, 2009 at 8:29 PM, Dianne Hackborn <hack...@android.com>wrote:

> There is a log printed with the time to launch an activity -- look at adb
> logcat.  I also think there is a more structured event log you can see with
> adb logcat -b events.
>
>
> On Thu, Apr 23, 2009 at 6:56 PM, Chai <jandhyalachaita...@gmail.com>wrote:
>
>>
>> Hi ,
>>
>> For application UI performance measurement, We have a requirement to
>> know the time it takes to show the app on the display screen , after
>> the intent is fired to launch the application i.e. Letsay I have 1000
>> contacts in my database, I want to know how much time does the
>> application take to lauch(or show it on the screen) when we launch the
>> contacts app. We are launching the activity thru ADB and getting the
>> timestamp on when we launched, we wanted to know when it is rendered
>> on the screen.. Is there anyway that we can know this information from
>> WindowManager or SurfaceFlinger ? If yes, how can we get this
>> information.. Pls let us know.
>>
>> Regs, Chaitanya
>>
>> On Mar 17, 4:34 pm, Dianne Hackborn <hack...@android.com> wrote:
>> > Because the window manager is responsible for organizing the screen,
>> > applications don't get to decide that.  The window manager allocates
>> > surfaces and decides where they go and how they are layered; it never
>> > touches their bits, which is up to the application.
>> >
>> >
>> >
>> > On Tue, Mar 17, 2009 at 3:21 PM, Videoguy <puri_mall...@yahoo.com>
>> wrote:
>> >
>> > > A surface is basically a pointer to block of memory. Why does a
>> > > separate process (i.e. Window Manager) have to create it? Why not the
>> > > activity itself create it?
>> >
>> > > Does Window manager need access to that memory?
>> > > If so, why?
>> >
>> > > Just curious.
>> >
>> > > Thanks
>> > > Videoguy
>> >
>> > --
>> > Dianne Hackborn
>> > Android framework engineer
>> > hack...@android.com
>> >
>> > Note: please don't send private questions to me, as I don't have time to
>> > provide private support.  All such questions should be posted on public
>> > forums, where I and others can see and answer them.
>>
>>
>
>
> --
> Dianne Hackborn
> Android framework engineer
> hack...@android.com
>
> 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.
>
>
>
> >
>

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