Android Runtime - How Dalvik and ART work?

In this video you'll learn how Android Runtime works, what is ART, DALVIK, JIT and AOT and how Android Runtime evolved over the years to make our apps faster 🚀
00:00 Intro
00:33 What is Android Runtime?
01:48 Dalvik (up to Kitkat)
03:38 ART (Lollipop)
05:15 Profile-guided compilation (Nougat)
06:54 Profiles in the cloud (Pie)
08:07 Summary

[@BuffaloCanCode]

In the last 11 years of my Android journey, this is the first time when I felt few basic things are still missing from my knowledge. Thank you Paulina for covering "Profiles in the Cloud". I completely missed this thing before. Great content and keep posting small videos... Happy Green Robots :)

[@mingato5538]

Please make video about memory leaks, garbage collectors and weak,strong reference. Good job ♥️

[@akhileshramteke6290]

Yes please cover above topics.

[@Dipak2323]

Wow! I knew about Dalvik and ART switch but never knew about hybrid and profiles in the cloud approach! This was really informative. Thanks 😃

[@clewfirstcfer]

You are explaining clearly and succinctly with minimal preamble. This is better than the majority of Android videos out there. Keep going.

[@nageshjatagond4175]

Great video and lot of content in this short video. Please keep them coming. Thank you.

[@pqsk]

I remember when art was announced and you had to toggle it manually on the Android system settings. I never knew all of these details, just some of it. Great video

[@Lucas-hh4oh]

Great video Paulina. Keep them coming!

[@binarytv2904]

Fantastic explanation. After browsing thorugh endless sites I still couldn't understand the what was really going on under the hood. Its very clear now. Thanks Paulina.

[@keyboardsurfer]

Awesome historical overview of how Dalvik and ART make things faster. I'd love to see your take on Baseline Profiles as wel.

[@akhileshramteke6290]

In recently, I attended interview there They have ask ART. From that day onwards I am searching the proper guidance of ART. From your video now I can say how ART works. Thanks for creating such wonderful tutorial. Its really helpful.

[@mamathak.p8609]

Before a while seeing this video my mind is blank about ART,DALVIK,JIT and AOT. Now i am clear about all this. thank you Paulina for this precise presentation. ☺

[@marcinlaskowski4449]

Great video! 😁 One thing: KitKat had both Dalvik and ART, only the second was disabled by default. However, it could be turned on from developer settings. Feeling old now, because this change happened when I was starting my dev career 😃

[@PaulinatalksAndroid]

You got me, I omitted this part to not make video too long :D

[@clementoseitano7568]

Oh wow, same as me

[@marcinlaskowski4449]

@@clementoseitano7568 So we are dinosaurs of android programming 😀

[@parthdesai6657]

One of the best video about Android runtime 👍

[@apeine]

Very good video. I was not aware of those strategies to run apps in older devices, and how far we got in the present way. Thanks.

[@kannans6462]

Great, informative and to the point. Thanks!!

[@atishagrawal]

Very efficient delivery. Simple words help us understand better. Keep it up.

[@NishantRathoreXYZ]

And I'm beginning in this field because I'm inspired from you. Thanks for inspiring me ❤

[@jonathanesquivelmartinez3455]

You explain very well. Congratulation!! you know how to do it! You have a new fan! I loved it!

[@samshekhawat]

most educating video for android runtime process, thank you!! make more video like this

[@user-uy8md9ez6f]

great clarifications , many thanks ❤

[@user-um6io3uc6u]

Awesome video !

[@vetalitet]

Hey! You are doing great videos with perfect explanation! Waiting for video concerning Memory management and GC ;)

[@dhanshyamkamath8493]

Noticed this channel recently. Love the explanation. Could you please create more of such videos.

[@chuck4747]

yeash this was informative you and your android are adorable ... i love your asthetic for an android developer well explained to ppl like me that no less your like my google assistants role model haha

[@rohitjakhar6672]

Very Informative and detailed video.

[@priyanshuganatra]

Amazing explanation!

[@ulissesargileu4664]

thank you so much for this video, helped me so much... regards from brazil

[@rmdanali]

Great video, Please do more like this. Thank you.

[@itcult]

Very useful, Paulina! Keep creating such videos :)

[@gustavosimoes9755]

Great Video with awesome explanation. Well done =)

[@yousefkazemi785]

Every android developer should know this. thank you Paulina for posting content and videos like this.

[@anugrahdev3707]

so beautiful

[@NishantRathoreXYZ]

I like your Android related videos I wait for your more videos

[@nomadeandy]

wonderful and very clear explanation!

[@chrisp267]

Interesting video, thanks! 👍🏻

[@maaz_gamming]

So beautiful 🤩 and intelligent.❤love from india

[@lumina3914]

finally i understand why my phone become slower and slower when i turn on the android phone. your explanation is so clear. thanks.

[@sandalisilva]

i understood more than the things that was taught in university lecture. thank you

[@TheVinnom]

excellent video!

[@IbrahimTariq-cl3wk]

very informative. thanks for the video

[@VEKTOR_87]

Thank you , very helpful

[@marcelomarques7907]

So great!!! 🇧🇷 thank u

[@mhdunknown]

Upload more videos. Your presentation and content are incredibly good.

[@codyrap95]

Insanely useful video, thank you! The explanation is very valuable and the graphics+image quality are on point, but If you want a tip, try to improve your English a bit, would raise the production quality substantially. Thanks again

[@andreyfom]

Very interesting video, Paulina 👍 Dziękuję!

[@vinaychalla3881]

beautifull!!

[@tushartk018]

This is great.

[@GirishGoradiya]

i love this video, I am Fresher in Android Development So thank you For this video 😍😍😍😍

[@pratyush1]

I am really amazed and would like to know more such interesting information/facts.

[@thinkinteltech]

Thanks!

[@MaisUmSomente]

Talk more about it, the video was very good and well explained. You can make longer videos, we will love it, you explain very well. Thanks

[@user-dl6mq2xk1h]

Cool video ,thx ;)

[@charonchui3795]

Very interesting video.

[@MrSantiagohoyos]

Nice video

[@micosin9987]

keep it up barbe doll

[@ahmedtawfiq4723]

I loved your videos and love you too

[@JasbirSingh-iq7kt]

very helpful video

[@johng7553]

very impressive!

[@_____________AGII_____________]

Beautyfull😍😍😍😍

[@mjstudio6843]

The quality of storytelling of education and video is very high. Thank you.

[@U4Universe]

You've explained the topic in a very easy & understandable way. Very easy to understand. Thanks. Really forward to new videos from you. Btw how did you make these amazing slides??

[@Abelmengesha-sp6lv]

I love it

[@smmi6743]

I see very well beautiful teacher Love you teacher ❤

[@gilmarcossantos3951]

Amei!

[@nikr3n]

Ciekawie i prosto wytłumaczone! Btw, mam identycznego Androida i książki GoT! :o

[@PaulinatalksAndroid]

Dzieki :D

[@zer0gaming1991]

Oh my god an angel 😍

[@adarshmanoharan3961]

Please make a video on memory management and garbage collection by ART that you mentioned in this video...Your video is very informative

[@copyrightmaster238]

❤❤❤

[@ApostKef]

Great video! Which program are you using for the animations?

[@PaulinatalksAndroid]

Thanks! I use keynote for animations :)

[@khaliquehussain2115]

Nicely explaining..but ma'am you are so beautiful ❤

[@nghiaminh7704]

Hi. Correct me if I'm wrong: 1. JIT was introduced with Froyo (2.2), before that Dalvik was like a pure interpreter. 2. I think the profile-guided compilation part just explains what JIT is, nothing more. Google is to blame for introducing fancy words instead of saying "we bring JIT to ART".

[@eugenegaragulya2650]

You should make a video about memory leaks =)

[@OudoMohy]

Pretty face pretty mind, thanks a lot. Please make a video about memory management, garbage collectors, and reference.

[@mainpurpose1084]

You are Beautiful... Taka a Love from Bangladesh

[@LiranBarsisa]

Interesting video. What about memory though? I've noticed that starting from some Android version, Bitmaps got to be stored on the global RAM and not as a part of the heap, meaning that apps won't reach OOM exception so easily by Bitmaps. In fact, when I tried to fill the memory with bitmaps, I got weird, other issues that sometimes can't be detected or be caught by the app (using try-catch). Not only that, but in the past I remember we could take a memory report (dump) and see the content of the bitmaps, but now It's impossible. Is this all true?

[@PaulinatalksAndroid]

Hi! When it comes to seeing then content of the bitmap in memory dump, you're right it's not possible from Android 8. I happen to mention that in one of my previous videos kzbin.info/www/bejne/bmO7hpiqpMeJibc :) But I don't think it's connected to changes in ART, AFAIK there were some changes in bitmap implementation that caused that. And about the memory: there were the changes in how memory is managed in different Android versions but I don't know if (and how) it influences the case with bitmaps that you described. I think it only influences the garbage collection. There is a great talk from Google I/O where they describe those changes, maybe this will be helpful? kzbin.info/www/bejne/Z6avq4aOjLyZesk

[@LiranBarsisa]

@@PaulinatalksAndroid Are there any plans to handle bitmaps nicer? While it's much harder now to fill the memory with bitmaps and cause issues from it, it's still theoretically possible. Would it be possible to get their content? To use try-catch when creating them (avoiding possible crashes) ? BTW, I know about the GC. I even remember when bitmaps became a part of the heap properly (was on Android 3.0 as I remember).

[@hiteshsarsava563]

Very useful to understand how my apps work with different version of android OS. Thank you for this. Have a good day.

[@eslambasher5720]

what is the different between DEX file and class files ? or bytecode and Dalvic code?

[@almamater489]

If only my professor didn't over-complicate theory... Thx girl, save my sanity

[@lllbenderlll]

Хорошие видео, жаль маловато. Эмм, может есть метод которым можно арт файлы декомпилировать, типа apktool или vdexextractor?

[@darkmusic9510]

do we have any docs on this topic ?

[@maheshappikatla8848]

I had one doubt did u act in the Pirates of the Caribbean: On Stranger Tides movie you look like that marmaid character in that movie 😅 your are as beautiful as her

[@ab_obada5012]

is it possible to make an emulator for it?

[@dineshk7830]

Hey why aren't you making more videos?... Please consider making more videos Or atleast share ur LinkedIn or twitter or some social media profile and give some Android related updates Please consider

[@Antagon666]

How does running JIT, AOT and caching everything, along with app packages being a magnitude larger than anywhere elese result in smaller RAM usage ? Android is pretty notorious for abusing memory, typically 3x as much as iOS for the same apps.

[@yassineinsta7731]

Good and nice and buitfy you is 🦄

[@yassineinsta7731]

You are the language of the machine 🤐

[@baguette_of_communist_china]

I gotta try the attack on titan runtime

[@siddifurqanmaz5282]

hey baby why you stopped posting videos i really like your content.😍

[@eslambasher5720]

ART compile byteCode to machine code OR compile Dalvik code to machine Code ?

[@gigantesupremo97555]

ART is the evolution of Dalvik

[@eslambasher5720]

@@gigantesupremo97555 can you explain more please?

[@punerealestatebuilder]

Dislikers wanted to learn JS from this video :D :D

[@MrAman-by1qm]

Elliott's sis 👍

[@mhmdichan665]

Suggest me a book for Android development using kotlin(which helps to learn deep)

[@FeribHellscream]

wassup with the green screen in the background?

[@xiaohualiang1590]

妹子真漂亮，还是高技术的

[@TheKing-xv2zh]

You are the most beautiful girl programmer I have ever seen

[@asfahanisliveval]

hello mam can u restrt ur channel please

[@xxicenturyfuck1195]

Хороший акцент) Вообще беспалевный, нейтив

[@KiLLJOY1056]

What happened to this channel? I was getting into it :/

[@jimpauloovejera2599]

turn off your cam, i get easily distracted by your face XD