Google I/O 2008 - Dalvik Virtual Machine Internals

[MustafaGuven]

thank you for this very understandable presentation.

[VondaFononono]

Thank you for all of this information Dan

[eltornaro]

its all because of cheese

[MrTakermania]

Hi Dan, First 10 min i feel torture to listen your seminar by listening your slow , everything is special, so you will become something special...

Not every one can build virtual machines, those platforms are deserve to the peoples with something special... That is you.

[MrTakermania]

Hi Dan, First 10 min i feel torture to listen your seminar by listening your slow pronunciation, then after 30 minutes i got impressed by the contents you are telling then i become ur fan when u started answering to the end developers after 43 minutes...

Your presentation style is something , your seeing style ,talking style ... continued in next comment

[orrzzer1990]

lol, i live in the nearest town, Akureyri :P

[dshap092]

We are working on an upgrade to JNI, which hides the C code from the Java programmer. Have a look at "Returning Control to the Programmer: SIMD Intrinsics for Virtual Machines" for the (ACM) Queue Magazine. It makes sense for google to integrate our approach into future releases of Android, so that Java programmers do not need no write C code. Dalvik VM already does some of this, but not the SIMD stuff, which is really an API add-on on top of Java.

[RemusLt]

he has 1000 000 registers ....

[pierrele]

OMG i found myself doing a lot of generic object list iterations :(. my life lost any sense

[mohammadabdelaziz11]

The pronunciation is very bad

I have and exam tomorrow and I have to listen to it all

I am dying here :((

[0ffh]

The "GCC way", we used to call it "direct threaded code"...

[Xploder270]

looking forward to Dalvik Turbo

[ferose2]

But there is swap/compcache available with modified versions of android.

[kennectic]

Have to agree that his language skills are not very good. I keep thinking he could convey ideas with far fewer words. Could just be public speaking jitters or software nerd language deficits.

It looks like the Davlik VM is doing smart stuff, but I was expecting a deeper talk. Astonishing to see how dumb regular (non-Davlik) Java bytecode is, especially since Java was originally conceived for use in embedded apps.

[jsd1982]

FYI, at 28:59, that S33KRIT_INFORMA410N is "I am rather fond of muffins." in ASCII. Nice, Dan.

[eltornaro]

@jsd1982 misli da je pametan

[majdijr]

great presentation

[shonzilla]

I haven't noticed Dan's imperfect presentational skills getting in the way of him presenting something not many people know (or care) about.

FYI, Dan is the designer of the Dalvik VM which makes him the greatest authority on the subject.

[bobbycratchit]

I would disagree. He probably is the foremost authority but not necessarily the greatest.

[shonzilla]

You're most probably right bobbycratchit!

Over the course of time that may have changed as many people got deep into hacking Android and understanding how Dalvik VM works.

I may left out "one of the" from my sentence, but please let's not split hairs here. I think you would agree that "adjective police" would be the extreme arm of "grammar police". ;-)

[jsd1982]

It's probably that he's thinking a lot about what he's saying, trying to make sure he doesn't say something incorrect, that makes him "stutter" as you call it. I'd just call it mental thrashing :)

[clemency]

Danfuzz #1!