yashsingh1/xdaforums huggingface dataset:
[Nexus 5 General] M@rs:
i testet 2 nexus 4 1 stock 1 stock rooted with 4.4.1 side by side. (Compared both with Dalvik/ Dalvik first to see if root or somthing makes a big different, but it seems they are equal )

Well its hard to say which runtime is faster, some apps start faster with dalvik some with art. But I would say Dalvik is faster in 4.4.1. only 1 or 2 apps was a little faster with art, but it was so minimal that it might be a little delay between the touch.

I´m Interessted in the Opinion of the others

P.s.: sry for my bad Englisch
[Nexus 5 General] :
Anybody else having issues with 4.4.1, art and tasker?
[Nexus 5 General] nmlssit:
Does ART on 441 takes ages to load like it did on 44?

I also have yet to understand what to do after flashing rom or kernel updates, is wiping cache recommended also on ART?
[Nexus 5 General] mw86:
Any advice on how to not get play store FC on ART? Unused the minimum gapps as noted and I get the FC. I'll try the new update posted maybe clean install of 4.4.1 will help
[Nexus 5 General] kosmasgr:
4.4.1 with art is an excellent combination. Nice battery results
[Nexus 5 General] tangcla:
You mean the first time that you switch it over to ART? Yes, that won't change.
[Nexus 5 General] nmlssit:
No i mean, what to do after flashing a new kernel or dirty flash a ROM update? On Dalvik we used to wipe cache/dalvik, now what is suggested to do?

Inviato dal mio Nexus 5 utilizzando Tapatalk
[Nexus 5 General] tangcla:
Nothing, I believe it is already compiled so there's no rebuilding of caches etc as it's done when the app is installed, or when you first switch to ART. i think.
[Nexus 5 General] ck.chunkeat:
Which is faster? art or dalvik in 4.4.1? What about the dalvik patch?
[Nexus 5 General] iamhacked:
Tapatalk seems to frequently crash in 4.4.1 art
[Nexus 5 General] wideasleep1:
Not here...clear app cache
[Nexus 5 General] superfuffo:
ART is good for you...

I've been using ART since day one, and thanks to the patched libs I could install Whatsapp, the only app I've had problems with. But never had a single crash, performance is awesome (probably due to the hardware anyway),

As of now, I see no reason to switch back to Dalvik (which I have always been doubtful of)...
[Nexus 5 General] tangcla:
Works fine for me.
[Nexus 5 General] xdp:
It's really hard to tell placebo vs. fact, but running ART the device seems to just fly in a way that doesn't jump out at me with Dalvik. Is this enough improvement to warrant giving up Xposed? Not sure yet. Do the Moto X Dalvik libs provide an identical experience?
[Nexus 5 General] tangcla:
I don't really care for performance, the Nexus 5 is stupid fast (seriously, who needs a quad-core 2.3GHz phone?!) but am more interested in whether people actually think ART is better on battery than Dalvik.
[Nexus 5 General] bblzd:
You guys have seen the ART vs Dalvik performance numbers in the Anand review right?

In a nut shell: the optimized Moto X Dalvik makes up the performance gain seen from ART.

With stock Dalvik on Nexus 5 ART is faster in Java by 10-50%.
[Nexus 5 General] mbutandola:
With the latest update (4.4.2) go launcher ex has stopped working on art.

Envoyé de mon Nexus 4 en utilisant Tapatalk
[Nexus 5 General] xdp:
Those are just benchmarks, which it's not surprising Qualcomm would've optimized for. The question is how do they compare with normal app opening and performance. I would love to hear the opinion of someone who has tried Moto X Dalvik and ART back to back.
[Nexus 5 General] dark_ente:
I've tried both and ART is more smooth in opening/switching app and also in scrolling.

It's not night and day but you can definitely feel it.
[Nexus 5 General] maxpower7:
Go Launcher hasn't been relevant since the Gingerbread days. I find that anything designed by the Go team is really gaudy and constantly prompts the user to purchase add-ons. I say good riddance if it's not working anymore.
[Nexus 5 General] xdp:
Well I have not tried Moto X Dalvik, but the difference between normal Dalvik and ART in switching apps is substantial. So much so that after trying ART I can't believe Dalivk is so bad with it. With Dalvik, even with the fast Snapdragon 800 and KitKat, the animation on the Recents button STILL lags considerably and opening the list takes a second. With ART, the button animation is as smooth as the other buttons and the list appears instantly. You can switch apps rapidly without it missing a beat. So I'm interested to know if Moto X Dalivk improves on this specifically at all.
[Nexus 5 General] gado45:
My first time switching to ART. Switching back to dalvik doesn't affect anything? (like wipes or soft reset ) Also witch backup app DOES work with art? Not even one?
[Nexus 5 General] jimmyjoebob:
You can switch back and forth, just takes a reboot and time.

Which witch?
[Nexus 5 General] gado45:
Thanks, sorry for the bad english.. Luckily I read before switching that is not compatible with xposed by any means so.. Art, maybe in the future
[Nexus 5 General] Battlefield:
Myself, I have never really had a problem with Android when it comes to speed per say (its always been good), however, the fluidity, or say smoothness has always been the issue. And from what I gather thats one of the major areas where ART runtime should come in handy, ie make a big difference.
[Nexus 5 General] pappy97:
I've switched to ART now that my preferred rom/kernel combo doesn't switch back to dalvik after reboot. I'm going to give it a few days before commenting on what I think so I can really check it and get a sense for it. I don't see too much difference in terms of performance, but it looks like I have a boost in battery life.

There is one app that doesn't work with ART: slingplayer. It's been reported on slingplayer forums and slingbox people have acknowledged they are looking at it, but I have to wonder if they really care enough to make it work at this point. They definitely will if android ever switches to ART by default.

You buy a slingbox, buy the slingplayer app, and it doesn't work when you use ART. I understand ART is still in experimental/dev stage, but it's released on the Nexus 5 and now Android 4.4.x, so a paid app—an expensive one like slinglayer—should support it.
[Nexus 5 General] tjtj4444:
No, ART is not ready and activation is hidden in the development menu. If you expect full functionality then you should not be running ART.

Many bugs are on Google side as well. They fixed several bugs in 4.4.1 but I'm sure many remains.
[Nexus 5 General] y2whisper:
Agreed. One of the objectives of having it on our devices is so that devs can look into it and be prepared for when it does become primetime in Android.
[Nexus 5 General] pappy97:
Tell that to the 50 million people who bugged the Whatsapp people to make Whatsapp work with ART.
[Nexus 5 General] undercover:
And were all wrong. It was not WhatsApp fault, it was ART bug.
[Nexus 5 General] jmudrick:
With due respect it's at least as ready as the ROMs and kernels this board is about (way more so it seems to me) . I've had zero problems with ART now that Whatsapp and FV-5 are working. It's fast and fluid I see no reason not to use it.
[Nexus 5 General] tjtj4444:
Of course you should use it if you like it.

But no one should give an app low grade on Play just because it doesn't work with ART. Then they have wrong expectations.
[Nexus 5 General] jmudrick:
Perhaps. Personally I've twice updated my comments on FV -5. I'm certain all the uproar around Whatsapp did contribute to a fix. If people just said oh well ART is experimental, no big deal if it doesn't work, finding a fix may not have been much of a priority. Google included it because they want people to use it and provide feedback, the fact that Whatsapp wasn't working was keeping a lot of people from using ART. Is the Playstore the best venue for commentary? Maybe not but it does get everyone's attention.
[Nexus 5 General] cittarito:
i've use ART on my galaxy sl i 9003, but i think its become more lagging or my android. can anyone give me some suggestion for my problem ???

i use CM11 for my roms.. thanks
[Nexus 5 General] johndrmr:
Art definitely seems snappier opening apps than even with the Moto X dalvik/bionic patches. Scrolling seems smoother also.
[Nexus 5 General] kapiljoshey:
Whatsapp Issue Solved

Whatsapp issue is solved for Android 4.4.1+...

Device - GT-i9001

ROM - CM11 ADC Team Alpha 3
[Nexus 5 General] Battlefield:
To all those running the ART, do you think the smoothness and fluidity with it on is finally on par with that of iOS and Windows Phone?

And how about touch responsiveness? How does that cope?
[Nexus 5 General] Dr Tone:
No, but it is getting pretty close now. A huge step in the right direction.
[Nexus 5 General] Manya3084:
You used an I phone 5 with iOS 7? Lag is everywhere.
[Nexus 5 General] mr.r9:
I agree. iOS 7 on both my friends 5s is laggy in scrolling and app opening animations (And it's a ripoff MIUI).

And regarding windows, opening any application will take a minimum of 3 seconds. Games take between 8-15 seconds!

So in summary, the N5 is the fastest and smoothest phone on the planet. Be happy people and stop nitpicking :good:
[Nexus 5 General] Dr Tone:
Yes. I have an iPad,but I've turned off the animations in accessibility options. Scrolling is still smoother on my iPad. My Windows 8 phone is in another league for smoothness.

My Nexus 5 is in another league in performance.
[Nexus 5 General] mbutandola:
Google will have to rethink the entire OS to achieve the same smoothness as Windows phone or iOS. All they've doing so far is patching

Envoyé de mon Nexus 4 en utilisant Tapatalk
[Nexus 5 General] Dr Tone:
It's definitely getting better with ART. It's still just a debug feature there might be more room for it to improve before they go live.
[Nexus 5 General] wideasleep1:
Yes. In my tests with both animations on and off on Andy N5 vs. IOS7 5S both performed identically... ART is impressive and will get further optimizations before being fully incorporated. Can't speak to Windows phone..won't use it.
[Nexus 5 General] maxpower7:
While this is technically true, anyone who thinks Android isn't smooth enough on the N5 is way, way too nitpicky.
[Nexus 5 General] mbutandola:
Never said it wasn't smooth enough. Just saying that compared to iOS and Windows phone, Android is still far behind. And it will always be unless the OS is completely revamped.

Envoyé de mon Nexus 4 en utilisant Tapatalk
[Nexus 5 General] maxpower7:
It was "far" behind in 2011. It's very close to both of them now, and it doesn't affect usability all (unlike a couple years ago).

Again, I agree with your post from a technical standpoint, because you're right that Android will need a total overhaul to get to that level. But honestly, I think you're overstating the degree of the difference in smoothness between iOS & Windows Phone and Android (on high-end handsets, at least).
[Nexus 5 General] wideasleep1:
BS. Old talking points from Gingerbread days. Yawn.
[Nexus 5 General] hari88:
i totally agree..switched to Art on custom rom and custom kernel, and i had no problems at all..all apps worked great so far
[Nexus 5 General] aeppacher:
You can actually delete the high end part. Have you seen an iphone 4s run ios7? Its hysterical, my roommate had that until he switched to the nex5. It would take 20 seconds just to open the camera. Saving a photo took ages, it would reboot non stop. 15% battery left meant it was turning off in a minute. ios7 runs well on the iphone 5+ and the 5s has so many app issues since they introduced 64 bit. I have no clue what smoothness people are talking about when they refer to iOS. It used to be like that, but then again if you don't really change the operating system in 5 years, I expect it to get smooth.

Having used windows phone, I can say it is smooth as hell. That being said, no notification hub in over two years? And their update policy is absurd (the whole wp7 to wp8). It leaves a lot to want.
[Nexus 5 General] lolpok:
I couldn't say it better my self :)
[Nexus 5 General] Mazensahlieh:
I have both the iPad Air and the Nexus 5, and KitKat is defenitly smoother than the iOS 7 even after the 7.0.4 update, and I'm on dalvik by the way.
[Nexus 5 General] mbutandola:
I don't know how iOS 7 runs on iPhone 4S. And the thing isn't about pros and cons of those OS. Windows phone is just in a league of it's own when it comes to smoothness and I very much doubt that Android could achieve that without a completely new OS. Still, I love my Nexus.

Envoyé de mon Nexus 4 en utilisant Tapatalk
[Nexus 5 General] darwinosx:
I know plenty of people who run iOS 7 on a 4s. it runs fine. On a phone that came out in October 2011. You really don't want to get into the subject of what Android phones run what versions of Android..especially older Android phones.

You comment about app issues under 64 bit is just wrong and its silly to post about something you don't know anything about.

Multi-touch performance and responsiveness is still significantly better on iOS devices and ART doesn't fix that.

I can see some people don't understand the difference between a runtime app and a compiled app. Dalvik and ART are a bit of both but runtime/JIT anything will always be slower. Another reason Google is moving to ART is because it is obvious that Dalvik is a filched JVM from Sun and Oracle which is still causing Google legal problems. Pretty stunning how much Google stole from other companies which is why their legal fees, fines, and payments from Android manufacturers to companies like Microsoft are so high.

My guess is that Google is dying to just get everything on Chrome as Android has been nothing but a lawsuit nightmare for them plus they have completely lost control of it. It was really a poorly run operation all the way around which is why Andy Rubin was booted from it.

From a usability perspective there is nothing in KitKat that makes an iOS device inherently better I will say that. But Google is nowhere near a 64 bit OS and new apps for iOS that take advantage of 64 bitness are far ahead of anything Android has to offer and it's just getting started.

In tablet in particular iOS is just laughing at Android in both hardware and software which for Apple is the same thing.

I have an N5 and Moto X and have had both iOS and Android phones from the beginning of each and know them and their internals better than most. Weird how Android users are still so insecure about their choice of device.

---------- Post added at 01:23 AM ---------- Previous post was at 01:21 AM ----------

Animations are quite a bit quicker in the latest beta and you can of course turn animations off. But I can see its important to you to assume the N5 is better. it's not and nobody serious that owns or extensively used both would say that.
[Nexus 5 General] aeppacher:
Oh god, its christmas and I don't want to have to do this, but it must be done. have you heard about kitkat on the nexus one?!?! Really wanna talk about old hardware running it well. Are you kidding me about Apple laughing as they win in hardware and software. Please tell me how people would laugh at a flagship that has less the 720P, a dual core processor with crappy architecture and lacking in coprocessors, a mediatek gpu, no nfc, no gorilla glass, made of the worlds most scratchable material, a 4 inch display, and a cost of $700+ unlocked. People would laugh their asses off, slap an apple logo on it and every fan boy to timbucktoo will find anything to praise in it. Really iOS is better? Yeah like Apple Maps, 64bit app compatibility is ****ing overkill, MOST DESKTOP PROGRAMS RUN IN 32 BIT, THAT SHOULD TELL YOU THAT ANGRY BIRDS DOESN'T NEED 64 BIT!!

And why did Apple make the 5c if it is laughing its way through the market right now?! Legit, you must be a troll...
[Nexus 5 General] abdel12345:
I didn't know the title of this thread was iOS vs android...:sly:

But seriously people gotta stop arguing over these stupid things. Everyone has their own opinion. So let's get back on topic which is discussing android run time not anything about iOS or 64 bit or why one thing is better than another. :banghead:
[Nexus 5 General] wideasleep1:
Fine? I've seen it lag on a 5..

And I gotta commend Google for designing KitKat to be compatible with older hardware... Apple is far more likely to leave you in the dust with older hardware these days. They've swapped positions on this topic. iFans will still say their older device is 'fine', but it's cognitive dissonance justification for premium prices paid.

Ad hominem and pot meet kettle.

Wrong again. 'Significant' is a gross sycophantic overstatement by an obvious iBoi.

I can see iFanbois will constantly troll boards touting their iSuperiority despite real world usage being virtually identical for a fraction of the cost of iHardware.

BS. Google wants to improve performance. They could really care less about legal problems..it's part of doing business.

Again..BS. They supplanted iOS! They own mobile..look at the numbers. And Andy wasn't booted at all...no idea where (blog?) you got that unless all you read is iOS propaganda. Andy has always had a passion for robotics...('android', mind you) and the time was right for him to transition towards his real passion. iPropaganda might very well see that as a 'boot' to sell clicks.

Again BS. From a usability perspective both OS's are more similar than different, despite iHardware costing nearly double (exorbitant margins). Perhaps this is why Android has overtaken and leaving iEverything in the dust.

No idea what you are implying here other than your iFanboi flag is clearly in the iBrainwashed camp. As if we already didn't know..

Well..aren't you iSpecial! Obviously iAuthority. What are you doing here? You're too good for us!

Uh..who's on an Android forum defending their losing OS? The insecurity is plain for all to see.
[Nexus 5 General] abdel12345:
Well I see my comment went unnoticed...
[Nexus 5 General] wideasleep1:
Indeed.
[Nexus 5 General] Dxtra:
This has to be joke. I bought my daughter the iPhone 5s and wife the new iPad mini and me my wife own the nexus 5 . Who u think your fooling? I must be blind I don't see that highly performance and responsiveness u see on the iPhone, when I see it stutter from time to time . The whole ios7 needs improvement. I prefer android and I respect your choice but man stop it you sound like a troll
[Nexus 5 General] SymbioticGenius:
*insert monkey wrench * I just got my parents two Nokia 925s recently. I think windows OS has made better improvements than android or iOS in the past year. It's the smoother experience of the 3. I personally have the Nexus5 and MotoX, both with art and I use an iPhone at work. If I had to give up my nexus and MotoX right now, I'd go windows phone, it's so easy to use. It might not be as capable as android, but it's smooth and the damn thing just works.

Sent from my MotoX Developer Edition
[Nexus 5 General] busab:
Is it just me or does the camera app focus quicker with ART enabled?

May just be a placebo.
[Nexus 5 General] Rxpert:
I'm going to assume you're being sarcastic....
[Nexus 5 General] MonztA2:
I assume it's possible to switch back to Dalvik without any problems after trying out ART?
[Nexus 5 General] floyd0815:
What a difference!

In listviews (XDA app, YouTube,..) it's noticeable the most.
[Nexus 5 General] aeppacher:
Yup just switch in dev settings and it will reboot
[Nexus 5 General] Croptop:
As others have mentioned, the phone seems a little snappier on ART. Sadly, it looks like Rdio joins the list of apps that won't run on ART. It just sits on the splash screen and eventually times out.
[Nexus 5 General] DanRyb:
This. I enabled ART yesterday and Facebook has been so much better running under ART than it ever has been!
[Nexus 5 General] aeppacher:
Oh just a heads up guys, deodexed Roms interfere with ARTs abilities to precompile code and so when flashing ggapps or roms make sure they are odexed or ART will cause so many crashes the UI will be unuseable. For instance PAs gapps right now will not work with ART. I will add to OP
[Nexus 5 General] Shardzmi:
Why would you assume this? Whatsapp devs get paid monthly and tibu is a paid app. Am I missing something here?
[Nexus 5 General] neodorian:
I think the idea is that ART is an experimental feature and not one that app developers should be expected to support just yet.

Would it be smart for a dev team with the resources to look into it and devote some time to messing with it? Probably.

But is there a chance that it will be a waste of time if they never end up officially implementing it in its current form? Most definitely.
[Nexus 5 General] avus_m3:
Sounds pretty cool. Hopefully it gets traction with developers!
[Nexus 5 General] jove39:
I didn't notice any/much difference between Dalvik and ART...may be side by side comparison would help!
[Nexus 5 General] AndroidKills:
I would advise those who use Whatsapp or rely heavily on Titanium Back up to not switch over to ART (yet).

Those two apps will not work what's so ever. There may be more apps that aren't compatible yet. Just a heads up.

Sent from my Nexus5
[Nexus 5 General] iexplus:
I have switched to ART and running for some hours, but honestly I don't see a huge improvement in performance. Maybe it's just me or I'm already spoiled but it was smooth as much as with dalvik. I will stick with it for more time as I'm currently ok without Tibu and WhatsApp. I hope battery gets some advantage, will see.
[Nexus 5 General] aeppacher:
Pretty much my experience with it so far, I think I need to stick with it for a bit longer to truly gauge how good it is. The launch times for apps on the nexus 5 are so fast that I hardly notice if its any faster, I think ART will be more observable on older hardware and it seems to align with Googles hopes of making android run on lower end devices. If they can get ART stable then devices with much less RAM and less powerful CPUs will be able to keep in pace with the system during app launches and what not.
[Nexus 5 General] mattcoz:
Might be a bit faster, haven't noticed anything significant, but it was blazing fast already. Only app that has crashed on me has been Pepperplate.
[Nexus 5 General] busab:
There's certain apps that I notice it in. Mostly with scrolling. Tapatalk and Facebook being the most notable.
[Nexus 5 General] evoandroidevo:
First sentence has an extra for
[Nexus 5 General] Shardzmi:
That's true for an indie developer, but what about for something that's as big as whatsapp? I do sort of understand tibu, but whatsapp has no excuse.
[Nexus 5 General] tjtj4444:
Please understand that ART is not finished by Google. Bugs are likely in Googles part. No reason for developers to give this priority at the moment. It will take a while before ART is ready.
[Nexus 5 General] Rusty!:
Windows Phone has always been very smooth. Like iOS it is only available for specific hardware, so it's optimised only for that
[Nexus 5 General] marinierb:
The problem, though, is it runs Windows.
[Nexus 5 General] fcng:
Windows phone is improving and smoothness (Android) is becoming the norm nowadays. But where are the apps? Windows needs years before they get to the amount of apps offered compared to iPhone and Android. It will be a long road ahead for Window phone to get to the top. Windows phone is still a good alternative to the Android and iPhone.
[Nexus 5 General] SymbioticGenius:
Not necessarily years, but one or two good windows phones and some reason to develop. Not really sure what the development scene looks like there though. Stock for stock, I'd go windows phone before iPhone. Windows has apps I'd need, work/business apps. Android... I could probably conquer the world with an android phone. Most people can't conquer their iPhone. BTW what happened to blackberry?

Sent from my Nexus 5
[Nexus 5 General] maxpower7:
Then what else matters? Windows phone might be a tad smoother, but this isn't Gingerbread we're talking about here. The N5 and most other new Android phones are smooth enough that any perceived difference from one OS to another is really more of an academic argument rather than anything that affects usage in a meaningful (or even noticeable) way. I'll take more usability over tiny differences in smoothness any day of the week.