L4Android performance issue

Adam Lackorzynski adam at os.inf.tu-dresden.de
Mon Jul 9 11:04:14 CEST 2012


On Fri Jul 06, 2012 at 17:07:24 -0500, Haohui Mai wrote:
> I just got a chance to run both L4Android and Android-x86 on an Asus EEE PC to measure their performance. In short, it seems to me that 
> mag is causing some problem.
> I ran the Android web browser, and measured the page load latency to measure the performance of both system.
> I tried to keep the configuration of both side the same. For example, both system only use VESA, and they share the same userspace binaries.
> L4Android did well in some cases, however, I saw more than 2x slow down from L4Android (notably http://www.android.com)
> I suspect that this comes from mag -- I noticed that the graphics performance of L4Android is not great, for example, even boot animation lags on L4Android.
> I suspect it'll take some time to fix, so is there a way to disable mag and let l4linux takes care of the frame buffer directly?

Just give the fb cap, that is given to mag, directly to L4Linux.
Additionally you need to configure L4Linux to provide the input device
you need and adapt the io config accordingly so L4Linux can access those
input devices.

Adam                 adam at os.inf.tu-dresden.de
  Lackorzynski         http://os.inf.tu-dresden.de/~adam/

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