On 05/14/2010 12:02 PM, Dianne Hackborn wrote: > On Wed, May 12, 2010 at 7:40 AM, Chen Yang <[email protected] > <mailto:[email protected]>> wrote: > > Cool! Would you like to share some insights on what makes the > preloading and scan so efficient on Nexus One? Fast CPU + fast > flash? Which one is more important? Or both? > > > There is nothing so special about the Nexus One in this regard. �It is > the newer Qualcomm with actually relatively slow internal flash. > > An alternative question would be what is making your board so slow. :} > �You might want to do some CPU and storage tests on it to see if there > is an issue there. > > And note that my numbers for the myTouch -- which I would consider to be > pretty much low-end Android hardware for these things -- are better than > your numbers. �Maybe for package scanning that could be explained by you > having a lot more .apks pre-installed on your device... �but with you > taking over 2x as long to do class preloading, I think you have a > problem somewhere.
Dianne, Thanks very much. This is helpful. You don't happen to have a bootchart for the myTouch lying around do you? If not, no bother. But if you have one and could share it, it would be helpful to compare with what I'm getting on an OMAP EVM board. I presume you-all get bootcharts as a standard part of your builds and testing, since you built it into 'init'. For others looking at boot time issues, I put some instructions for using it on Android, as well as a bootchart from the ADP1, here: http://elinux.org/Using_Bootchart_on_Android IMHO, it would be useful, if people have measurements from other devices or platforms, if we could collect more and post them there. Thanks, -- Tim P.S. Lest I hear cries of hypocrisy, I'll try to get one for an OMAP EVM running eclair up on the site Real Soon Now... :-) ============================= Tim Bird Architecture Group Chair, CE Linux Forum Senior Staff Engineer, Sony Network Entertainment ============================= -- unsubscribe: [email protected] website: http://groups.google.com/group/android-porting
