yashsingh1/xdaforums huggingface dataset:
[Nexus 4 General] chudek:
Ok so i have a few questions... When I'm on dalvik right? And im switching to ART, ist optimized only stock google apps or all installed apps? IF just google apps, then the best options will be switch do ART at clean Android and then installing other apps. Coz apps are compiled at installing. Its right or not?
[Nexus 4 General] VivaErBetis:
All apps are optimized.
[Nexus 4 General] Impo5sible:
And Can I switch back to dalvik after using ART? Without data loss, or wipe, ...?
[Nexus 4 General] dethrat:
I have several times over aside from rebuilding the dalvik/art cache when rebooting
[Nexus 4 General] MersauX:
The only app I'm seeing issues with at the moment is the IMDb app, it's slower on ART than on dalvik. Other than that, everything is very nice and smooth.
[Nexus 4 General] kaiser_tytnii:
Confirmed
[Nexus 4 General] trillo69:
After having tried ART runtime, this is going to be a never look back for me, even though Titanium Backup does not work. My nexus is now as smooth as I would expect from a 2GB quadcore phone.

Occasional lag is gone for real. I use to suffer from it while scrolling in tapatalk, facebook and whatsapp contacts screen, and now everything silky smooth. Even multitask is faster, and everything with stock rom.
[Nexus 4 General] username8611:
Yes, on rastakat and trinity kernel with stock voltage and over clocked to 1728mhz. While browsing the internet and other light tasks, the cpu hovers around 35 - 40*C. Before it would be around 40-45 on stock frequency and undervolted. I've tried this kernel and overclock on 4.3 Roms and never had this stability with an overclock, and temps this low.
[Nexus 4 General] barfuss:
how do you mean? it works fine on my N4 with ART... I'm on stock 4.4, rooted...
[Nexus 4 General] Roastmeat:
What ROM's are you guys using

Theres a bunch out there but I dont know if they have the updated binaries and such
[Nexus 4 General] viktorlj:
What version? I tried latest IGO primo and it can't install. When phone is on dalvik, everything is ok.
[Nexus 4 General] gtg465x:
To those who are saying ART is smoother... did you play with the official KitKat release for a while before switching to ART or did you just switch immediately after upgrading from 4.3? After some testing with Chrome, the XDA free app, and Facebook, I can't be sure I'm noticing any difference in smoothness between dalvik and ART on official 4.4. Both seem smoother than 4.3 though. If you switched to ART immediately after upgrading from 4.3, I suggest you switch back to dalvik to make sure the smoother operation isn't just from 4.4 and not ART.
[Nexus 4 General] luiseteyo:
I said this as soon as ART worked fine. The only way I noticed an improvement in smoothnes was in the statusbar, when choosing between notifications and quicksettings menus. ART seems to be a great feature and project, but is in a very early stage, I think...
[Nexus 4 General] meranto:
I just switched back to Dalvik for the following reasons:

Several apps not (really) working (up-to-date WhatsApp, Titanium Backup, SVR, Imdb)

Small improvement in UI responsiveness, but not huge. Mostly placebo I think after switching back.

Optimising apps takes ages every time I flash a new nightly.

Potential unexpected issues arising in the future.

I'm just going to wait until a good portion of the XDA crowd is hooked and most of the app issues are solved by Google and/or the app makers.

ART is great for enthusiasts and maybe some other people, but not for me yet in the current form.
[Nexus 4 General] blaraka:
Well, I don't know about specific apps, but I switched between thoses back and forth and the only thing that annoyed me in Nexus which was recent apps menu lag/stutter is resolved by Art not by KitKat. I really thought that it is probably placebo effect but it seems to be real after all.
[Nexus 4 General] jakubby:
Am I loose any apps,data If I have rooted stock ROM and I will change to ART ? And what about changing to dalvik from art ? I read bout some SuperSU issues after changing is it still a problem ??

Wysłane z mojego Nexus 4 przy użyciu Tapatalka
[Nexus 4 General] Ticiano:
I used ART for a while and the overall performance gain is great, but I couldnt use the Rdio app. I think I'll use the old Dalvik till the apps are updated to run with ART. Overall performance of kit kat is superb anyway...
[Nexus 4 General] moon-unit:
I would have to agree that longer term this is going to be a great thing for Android but right now it's not ready for daily use. Will be keeping an eye out for it in the future though.....
[Nexus 4 General] super noob bros:
A better way to check performance differences would be to slow the phone down (reduce max. clock, disable few cores) and check the performance of ART vs. Dalvik. Our phone is already very fast for any perceptible difference between the two, however, slowing them down will make it more apparent.

The biggest change with ART vs Dalvik will be in regards to battery life in higher end phones, not performance. With ART, the phone could run at lower clocks and with a few cores off, hence saving battery life and keeping the phone cool.

I am running my n4 with stock 4.4 + neo kernel with 2 cores disabled and a max. clock of 1GHz and the improvement to battery life is drastic with ART enabled, while the performance is really good. :)
[Nexus 4 General] ShinnAsuka:
For some reason, media scanning doesn't work with ART enabled. Like for example, in Google Play Music, I can't play any of the music I have stored locally. Every time I scan for media, the app just closes. Tried Google Play Music and Shuttle+. Anyone else experience this?
[Nexus 4 General] karthi89:
Latest version of titanium backup working with art? Anyone checked?
[Nexus 4 General] Ümit:
I noticed that the battery life is not so good on art with stock kernel.
[Nexus 4 General] forever_lol:
TiBu still no go, and media scanner on trickster doesn't work neither.

EDIT: nor media scanner works with Dalvik
[Nexus 4 General] adichandra:
I cant see myself going back to dalvik again after trying art. Too bad drastic nintendo ds emulator doesn't work, but it's ok i can live with that
[Nexus 4 General] jakubby:
Am I loose any apps,data If I have rooted stock ROM and I will change to ART ? And what about changing to dalvik from art ? I read bout some SuperSU issues after changing is it still a problem ??

Send from my Nexus 4 using Tapatalk .
[Nexus 4 General] faddyie:
Delete it
[Nexus 4 General] blaraka:
Tried going back to Dalvik once again, checked recent apps menu under load on both runtimes, after testing back to Art. If that's placebo effect it's enormous one ;)
[Nexus 4 General] barfuss:
I have some old version... iGo My way - version 8.4.3.179971..

I installed it on Dalvik, but then switched to ART and everything works fine..
[Nexus 4 General] shadehh:
It can't be placebo, there's something to this whole ART project and it's not just the opening of apps.

Test for yourself buy using

hangout (convo with lots of apps and pics)

whatsapp (same as above)

facebook - this thing is a huge difference, i only installed it to test it, i hate facebook but i know what the apps been like so far

and finally the play store, there's a difference in scrolling even if it's a minimal one.

The more intense the app the faster you're going to realize it, and boy is switching between apps in the task list fun. It's so snappy and instantaneous
[Nexus 4 General] gtg465x:
Facebook has been getting a little smoother with each release for a while now, so if you used it several updates ago that isn't really a fair comparison. To me it seems the same with dalvik and ART.
[Nexus 4 General] pepifness:
To me under ART, not run some applications that use often - InoMail Snap camera.
[Nexus 4 General] snak3ater:
Never going back to dalvik...ART is so smooth.apps blazing fast.
[Nexus 4 General] wkkenneth:
I just switched from dalvik to ART, apps are definitely running faster! Only problem is that some apps are not compatible with this new runtime (e.g. Titanium Backup, and some games)
[Nexus 4 General] bbaero:
been trying it since the factory image hit N4, apps start faster and somehow my N4 is more cooler than usual

custom kernel might cause it (cooler temp), but dunno though
[Nexus 4 General] ki1120:
does anyone know why in ART mode, my mobile optimize all the app everytime when i reboot?
[Nexus 4 General] bexem:
Maybe is chainfire root 1.69, for me was the problem!
[Nexus 4 General] ki1120:
thanks for remind,

does changing to v1.72b resolve the porblem?
[Nexus 4 General] bexem:
You Can try, I re-flashed all (wipe) and installed cr-autoroot (without the superuserapp) and no optimization at every reboot!

Sent from my Nexus 4
[Nexus 4 General] faddyie:
Back to dalvik. Spent 1 charge cycle on art. Apparently found longer battery life initially but then observed drain. Can live without few apps like tb etc but found lag on unlocking after sleep and status bar pull down.

However, overall it was much snappier and crisp.

Sent from my Nexus 4
[Nexus 4 General] whitedragonz83:
I've only used ART about a day or two now but I'm pretty satisfied with it. I'm hoping to have a little more evaluation time this weekend. It currently feels like it outperforms Franco custom kernel from 4.3.
[Nexus 4 General] LoVeRice:
Apps open like it was open before or its already open, no more loading circle. :)
[Nexus 4 General] olyloh6696:
Just wondering that if you enable ART does it decrease your internal storage memory and why? (Out of curiosity)

I recall having 7.2GB before and 6.7GB immediately after enabling it. A hefty 500mb chunk there!
[Nexus 4 General] Madfysh:
It's a "side effect" as now every app on your phone has been compiled, instead of regular JIT compile. What means, what each app do when you run it (it is compiled) now all apps did that and they are all ready to be started (faster).

Check this nice post: http://xdaforums.com/showpost.php?p=47491099&postcount=43
[Nexus 4 General] olyloh6696:
Thanks for that!

And if I switch back to davlik, do I automatically gain my storage back?
[Nexus 4 General] shadehh:
Yes, you get your storage back
[Nexus 4 General] Rody2k6:
Everyone is talking about ART in 4.4 but what I would like to know is how can I get in on this fun and use art instead of dalvik
[Nexus 4 General] Madfysh:
Option in developer menu, of course.
[Nexus 4 General] Rody2k6:
Any issues with compatibility?
[Nexus 4 General] Madfysh:
Yes. Some apps (currently) don't work with ART.
[Nexus 4 General] jcnbama:
Just FYI if you didn't know... The bad news. Xposed framework is not compatible with ART. Makes me sad but I can tell my phone is faster in opening apps if nothing else and a huge battery difference. So guess I'll have to stick with none of those mods for now. Oh well.
[Nexus 4 General] toews:
Just wondering, has anybody compared their boot up times Dalvik vs ART? My bootup time on Dalvik is around 1:10 while on ART it's around 2:00. I thought bootups are supposed to be faster on ART? Using this https://play.google.com/store/apps/details?id=imoblife.toolbox.full to measure it.
[Nexus 4 General] marathone:
Who cares about boot up times? It's the benefit of faster app launch and improved battery life. One shouldn't be booting often.
[Nexus 4 General] prog19:
After one week using art I the stock Rom with a plenty of different kernel, I switch back to dalvik with the purpose of trying the optimization patch of Moto X. So far I'm pleased with the results. This optimizations made my device as fast and smooth as it were in 4.3. It's nice because give us time to wait for every app to be art optimized
[Nexus 4 General] olyloh6696:
When the new version of android come out with ART fully working, is it likely we get the update?
[Nexus 4 General] shadehh:
[MENTION=5105284]toews[/MENTION] takes me only 50 secs to boot with art
[Nexus 4 General] mfabruno:
2665245226

so you guys saying ART isn't worth for the while?

tahnks
[Nexus 4 General] b1337:
Lol....
[Nexus 4 General] hamedunix:
I'm stock, with unlocked bootloader and rooted. How do I get ART? And is it reversible easily without losing data?
[Nexus 4 General] mahesh1989:
Actually no..the boot up and installation of apps is going to take much longer..

and this is only one time process..after the app is installed, its definitely faster.

And this is still in progress, it will improve:good:
[Nexus 4 General] mfabruno:
very helpful of yours!
[Nexus 4 General] b1337:
Very ignorant question of yours....have u even tried the option yourself or reading the thread?
[Nexus 4 General] TwistyValhalla:
Used ART for a couple days and have now switched back to dalvik. Definitely noticed improvement with app startups but some apps that I use daily didn't work with ART.. too bad. Even with ART I noticed the home button lag (though a bit less).
[Nexus 4 General] mfabruno:
I'am waiting to see if it is all benefits, and for what i read it isn't fully optimized, so i asked if it was better to wait a little longer!
[Nexus 4 General] lapocompris:
In Settings > Developer options > Select runtime

Yes
[Nexus 4 General] andr0id_xda:
I don't use it :rolleyes:
[Nexus 4 General] PGvossman:
Is there any danger in activating it? I recall reading a while ago that people should avoid it since it could brick their phone.
[Nexus 4 General] b1337:
That's never happened or been said any where legitimate....
[Nexus 4 General] Mainak Roy:
Same here bro...can't live without tb...
[Nexus 4 General] mananbond007:
ART is just fantastic... Smooth and blazing fast in responsiveness... Was wondering if we had widgets in to fit GEL layout..

Sent from my Nexus 4
[Nexus 4 General] khanhtrinh:
I was curious, so I switched tto ART this morning but failed to realize anything called 'noticeably faster'. So sad :( With Dalvik on Cataclysm, things have already been so smooth.
[Nexus 4 General] nigelhealy:
I just tried switching to ART. SlingPlayer didn't work. Switched back to Dalvik - Slingplayer works. Reported in the list. Running stock 4.4 with Franco r194
[Nexus 4 General] silverqueen666:
i use my phone just for browsing with chrome and some social apps (whatsapp finally works!) and finally i switched to ART. after a few days live with it i didnt notice any significant performance improvement and i feel the battery life isnt that good. or am i doing it wrong? im using semaphore 1.8.0 because touch control works perfect with this kernel
[Nexus 4 General] Oxious119:
I've been using ART for a few days now and for me it was a significant boost in performance. However, installing the xposed beta seems to have broke it. Phone rebooted in dalvik and I can't switch back. No biggie though, the dalvik libraries from the moto x made up for that ;)
[Nexus 4 General] mj.vikram:
i didn't find any performance improvement with ART its almost same as Dalvik..
[Nexus 4 General] Oxious119:
Well, it's in the detail. Apps will load faster with art. Also multitasking feels much more fluid than on dalvik.

Maybe some people don't realize the differences that much because our device is blazingly fast by default ;)
[Nexus 4 General] forever_lol:
I accidentally switched to dalvik today (i flashed system image and it was dalvik by default) and i realised that when I noticed choppiness in app drawer (the same as on jb). Also swiping between homescreens weren't as smooth as it used to. No huge difference but matters to me.
[Nexus 4 General] krystyuc:
Well art is more snappier on launcher and loading time on Asphalt 8 is considerably reduced.

Here you go Dalvik vs Art http://www.youtube.com/watch?v=PHYjoO_65zs
[Nexus 4 General] PJcastaldo:
I like how everyone jumped to use this new run time environment when it not even completed for use. . You can even see from videos its only faster (and a tiny bit) than dalvik and that's only sometimes.

All you guys are suffering from a massive and contagious version of tHe PlAcEbO effect.. its very humerus.
[Nexus 4 General] forever_lol:
Still ...I like this placebo very much :)
[Nexus 4 General] PoisonWolf:
It would be humorous if one of the ROM developers placed a "fake" switch to ART button (i.e., ART is actually permanently disabled and the button does nothing) in the settings menu and watch if people reported noticing "blazingly" improved speeds.

Hahahaha.
[Nexus 4 General] RealiZms:
Cool story bro

---------- Post added at 04:21 PM ---------- Previous post was at 04:16 PM ----------

Yea because nobody would notice..... Smh

Its a readily apparent improvement. It's a new runtime designed to be more efficient and guess what? It is.

While were at it let's all travel by Conestoga Wagon instead of motorized carriages.
[Nexus 4 General] PJcastaldo:
And all of these people would still see improvement. Lmao. Funny.

Its not even completed .. its only there to give app developers a heads up on what's to come. In very very few instances is it giving you "faster" experience .. its all in your head.

I'm not starting something with any of you internet tough guys.. just pointing it out.. and its uber lame now the forum is filled with "blah blah Art" threads.. its lame
[Nexus 4 General] RealiZms:
Very constructive post..

Know what's really lame? Mental midgets using the word "uber" in a sentence. Now that's lame. :good:
[Nexus 4 General] PJcastaldo:
I don't understand why you feel the need to be derogatory..

And whats wrong with uber?
[Nexus 4 General] RealiZms:
Your entire post was derogatory.

Nothing wrong with uber it's German for the word very....
[Nexus 4 General] gtg465x:
FYI, I have both a Nexus 4 and an HTC One GPE. I tried ART on the Nexus 4 last week. Switching back and forth between Dalvik and ART, I could barely tell a difference in smoothness, and acknowledged the possibility that it was just placebo.

However, with 4.4 now on my One, I can definitely tell a difference when using ART on it. I think the Nexus 4 is so smooth on 4.4 to begin with that ART doesn't make much difference. Since the HTC One has a 1080p screen, it's pushing a lot more pixels and wasn't quite as smooth as the Nexus 4, so the improved smoothness in ART was more apparent.
[Nexus 4 General] M3drvr:
I notice significant difference. My nexus 7 is on ART and N4 on dalvik. I get so impatient with the N4 with things. Switching apps using the recent button is significantly faster on the N7 with ART. The N7 is full factory and the N4 is full custom. The N7 is noticeably faster. App loading and switching apps is faster on the N7, no question! It's the little things like this that make it that matter. At times I can't stand using the N4 due to how much slower it is to do things compared to the N7. Before switching to ART the N7 felt like the N4. Not slow, but there were slight pauses for certain things. With it on ART, those small pauses are gone now. That's the difference!
[Nexus 4 General] riko540:
ART is more responsive but I'm not really seeing an improvement in battery life.
[Nexus 4 General] M3drvr:
I haven't seen any improvement in battery really either.
[Nexus 4 General] shadehh:
My battery life has been crazy. Crazily good that is haha. I was annoyed that my battery wasnt as good though before. But i changed a few things. People said calibrating battery is useless but i did it anyway. And i disabled google now qnd locationsnbecause honestly i felt that thing has been draining battery like never before and i didnt want to put up with that bull crap. Regardless, i have not lost on much if anything at all by doing that and if it gives me more battery life then that far ourweighs what it offers. Just my thoughts

Good luck
[Nexus 4 General] b1337:
If you understand how significant ART is over dalvik you wouldn't post such a ignorant statement. Beyond that, for somewhat early stage development it runs amazing....
[Nexus 4 General] jayRokk:
Placebo?

But you just said its a tiny bit faster.

So why would you contradict yourself?

I highly doubt Google added it simply for the fact that it's a placebo effect. Google did debunk the battery calibration as a placebo so why contribute to the "contagion of placebo?"

And I guess the optimization of apps in the boot up time is just the OS trolling us right?

Highly doubt you know what you're talking about.
[Nexus 4 General] ephumuris:
Titanium Backup updated with support for ART I might make the switch...
[Nexus 4 General] kenshinta:
question:

did you dvm - ART switchers "feel" smoother/ better performance but lost 1k points in the same version Antut benchmark?

---------- Post added at 08:41 AM ---------- Previous post was at 08:40 AM ----------

Not yet for me - xposed (xprivacy mainly) has to make the jump as well.
[Nexus 4 General] ephumuris:
At least it's slowly happening with the 4.4 beta xposed!
[Nexus 4 General] whitedragonz83:
Switched back to Dalvik to test a possibly incompatibility with Tasker (found no issues with Dalvik vs ART, likely a mistake in my task).

After a week with ART (~100 hours uptime) I found that there was a significant improvement in opening apps and moving between apps than with a fresh reboot on Dalvik. Already in the process of going back to ART. It felt like night and day to me the slowness of Dalvik.
[Nexus 4 General] RedGoblinz:
For me, ART fixed the annoying delay when pressing the Recents button.

I've tried everything I can think of, clean install, different ROMs, stock kernel, Hellscore, Semaphore, disabled animations. It all didn't work for me, I really wish there was a way to fix it because Xposed is not yet compatible with ART.
[Nexus 4 General] deepayanneogi:
Yes, the scrolling, recent apps opening and overall smoothness is quite improved in ART over Dalvik, wish XPOSED was compatible but you gain some, loose some. :(
[Nexus 4 General] RealiZms:
Patience...it will be ready shortly:good:
[Nexus 4 General] meangreenie:
As I read that I thought I'd try it to see where your coming from, but ended up confused.. It's instant, I cannot see how it could possibly be any faster? Using optimised dalvik.
[Nexus 4 General] M3drvr:
We're talking about normal Dalvik here. And since optimized dalvik is more Motorola specific right now, its not exactly made for the Nexus devices. And clearly google isn't moving that way since they're bringing ART. Optimized dalvik is not what we're comparing to here.
[T-Mobile Samsung Galaxy S 4] dreseansr:
Alright so, I'm rooted and whenever I try to use apps2sd, it tells me I need to update? And whenever I try to use the other one EasyApps2SD it says something like your phone doesn't allow this function?? How can I fix this? This is the main reason why I rooted and now I can't use it?'

PS: My phone is the Galaxy S4 from T Mobile.
[T-Mobile Samsung Galaxy S 4] TheAtheistOtaku:
the tmobile s4 doesnt have that feature yet. you have to wait until the 4.3 update is released on the 18th (supposedly)