Thanks Romain, I do have a systrace, although I didn't quite know how to read it yet. This is my first time using it to diagnose a problem. From what I can see, both cpus are mostly idle in the middle of the renderer thread.
Thread-20833 is the game logic Thread Thread-20832 is the GLSurfaceView's Renderer Thread http://djgamblore.com/trace.html On Monday, January 7, 2013 8:23:21 AM UTC-7, Romain Guy (Google) wrote: > > Hi Adam, > > This is typically the kind of performance issue that is best diagnosed > with systrace instead of traceview. Traceview shows your process is busy > waiting on something else and systrace should be able to show what. > > > On Sun, Jan 6, 2013 at 1:31 PM, Adam Metcalf <[email protected]<javascript:> > > wrote: > >> I have been trying to diagnose a framerate issue in my game engine. I >> recently switched from GL ES 1.1 to 2.0. In the attached images, Thread is >> the game logic thread and GLThread is the glSurfaceView's Renderer thread. >> >> On my Nexus S (ICS 4.0.4), ICS.png, everything works fine except >> sometimes eglSwapBuffers takes > 16 ms at the start, sometimes 40ms it >> eventually settles but is still 17ms. >> >> On my Galaxy Nexus (JB 4.1.2), JellyBean.png, the eglSwapBuffers call is >> short but a call made in the rendering thread context switches for about >> 17-20ms every frame. I have been trying to figure out why for a while now. >> >> Now as I understand, JellyBean added a bunch of vsync code for project >> butter. Also the Galaxy Nexus has a multicore processor, so things are >> different. I am wondering why my call is being delayed what seems like a >> frame length? Is this due to project butter? How I can prevent this from >> happening? >> >> Extra notes about the glDrawElements call: >> Is usually 48-70 indices, not in a glBuffer >> Most basic texture fragment shader. >> glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA) >> Is fine on the Nexus S. >> >> Thanks. >> >> -- >> 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]<javascript:> >> To unsubscribe from this group, send email to >> [email protected] <javascript:> >> For more options, visit this group at >> http://groups.google.com/group/android-developers?hl=en > > > > > -- > Romain Guy > Android framework engineer > [email protected] <javascript:> > -- 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
