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    Default ART vs. Dalvik cache: Are you seeing a performance difference?

    For laughs, I've enabled ART on my N4, let it switch my apps over (no weirdness encountered so far) but I'm not seeing *any* difference at all.

    If you are running with ART, are you seeing a difference in performance?
  2. #2  

    Default Re: ART vs. Dalvik cache: Are you seeing a performance difference?

    Enabled it on my Moto X. Don't see a difference so far after a couple of hours. Hoping for even better battery life.

    Posted via Android Central App
    Moto X | T-Mobile | 139.12.57.ghost_row.Retail.en.US
  3. #3  
    trivor's Avatar

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    Default Re: ART vs. Dalvik cache: Are you seeing a performance difference?

    I saw a difference on my Nexus 7 [2013]. It was noticeably faster.

    Posted via Android Central App
  4. #4  

    Default Re: ART vs. Dalvik cache: Are you seeing a performance difference?

    It made transition between windows smoother, so much that when I switched back to Dalvik I couldn't stand it (the short waits between tapping on something and reaction, like tapping on home or recent buttons). It's not faster like a faster CPU, but it does seem to suffer less from interface stutters. It's more of a subtle feel, similar to when you run iOS6 on an good specs iPad where everything feel smooth. I feel ART made the entire argument of iOS(7) being smoother invalid as this point.

    Since we already have fast hardwares, it's hard to tell the difference since it's differentiate by fractions of a second. Some apps should load faster too naturally due the ART compiling the complete program to machine code.
    Last edited by someguy01234; 11-29-2013 at 09:48 AM.
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    yfan 
  5. #5  

    Default Re: ART vs. Dalvik cache: Are you seeing a performance difference?

    Just switched mine over for kicks. Reboot takes a hell of a long time. Looking at a "Android is updating" screen now... ""optimizing app 56 of 176"..... I didn't even know I had that many..........
    Pat
    Nook Color - CM10.1 ( Jelly Bean 4.2.2) on eMMC
    Google Galaxy Nexus - stock Jelly Bean 4.3
    Galaxy Nexus 10 - stock KitKat 4.4.2
    Galaxy Nexus 7 (2nd Generation) - stock KitKat 4.4.2
    Chromecast
    Nexus 5 - stock KitKat 4.4.2
  6. #6  

    Default Re: ART vs. Dalvik cache: Are you seeing a performance difference?

    Thinking right now it could be a placebo effect. I never really had lag, but I switched to see the effect.

    Not sure if keyboard is faster or I'm typing faster.

    Bloody Placebo's

    - Android Central App. Remember courage is contagious.
    Tom Fairclough
    Credo faber est quisque fortunae suae
    I believe every man is the artisan of his own fortune
  7. #7  

    Default Re: ART vs. Dalvik cache: Are you seeing a performance difference?

    My battery history shows my phone as constantly awake!?!

    Posted via Android Central App
    Moto X | T-Mobile | 139.12.57.ghost_row.Retail.en.US
  8. #8  

    Default Re: ART vs. Dalvik cache: Are you seeing a performance difference?

    Quote Originally Posted by morphodone View Post
    My battery history shows my phone as constantly awake!?!

    Posted via Android Central App
    You have wakelock. You need to find which app is causing it.
  9. #9  

    Default Re: ART vs. Dalvik cache: Are you seeing a performance difference?

    Quote Originally Posted by Tall Mike 2145 View Post
    For laughs, I've enabled ART on my N4, let it switch my apps over (no weirdness encountered so far) but I'm not seeing *any* difference at all.

    If you are running with ART, are you seeing a difference in performance?
    It almost doubled my battery life on my n5 but performance hasn't been noticeable.
  10. #10  
    yfan's Avatar

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    Default Re: ART vs. Dalvik cache: Are you seeing a performance difference?

    Let's put it this way: before I enabled ART, my Nexus 5 was screaming. After I switched it on, it ROARS.

    I think it would help if people posting in this thread indicate their device. Most are doing so already; it helps understand if the difference experienced is bigger or smaller on a given device.

    Sent from my Nexus 5 using Tapatalk
  11. #11  

    Default Re: ART vs. Dalvik cache: Are you seeing a performance difference?

    Quote Originally Posted by someguy01234 View Post
    You have wakelock. You need to find which app is causing it.
    Someguy,what's with your avatar?

    Posted via Android Central App
  12. #12  

    Default Re: ART vs. Dalvik cache: Are you seeing a performance difference?

    Quote Originally Posted by stackberry369 View Post
    Someguy,what's with your avatar?

    Posted via Android Central App
    Like I said, it's my bravatar. It makes me feel pretty inside.
  13. #13  

    Default Re: ART vs. Dalvik cache: Are you seeing a performance difference?

    I switched my N5 over two weeks ago. There is was an immediate difference. I don't have any system or app monitor that will let me see if apps run any faster so I am not claiming that.
    What I see is a faster response and performance in the system functions. Apps start faster, screens scroll faster, folders open in a flash so as far as the system actions are concerned seems like improvement.
  14. #14  

    Default Re: ART vs. Dalvik cache: Are you seeing a performance difference?

    I find that running Dalvik with Moto X libraries installed has produced the best results.
  15. #15  

    Default Re: ART vs. Dalvik cache: Are you seeing a performance difference?

    I don't know if it is faster, but battery life on my Nexus 5 seems a bit better.
    Pat
    Nook Color - CM10.1 ( Jelly Bean 4.2.2) on eMMC
    Google Galaxy Nexus - stock Jelly Bean 4.3
    Galaxy Nexus 10 - stock KitKat 4.4.2
    Galaxy Nexus 7 (2nd Generation) - stock KitKat 4.4.2
    Chromecast
    Nexus 5 - stock KitKat 4.4.2
  16. #16  
    devilsfl's Avatar

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    Default Re: ART vs. Dalvik cache: Are you seeing a performance difference?

    I liked ART better but I noticed I couldn't upload pics to facebook. Anyone else have this problem?
  17. #17  
    yfan's Avatar

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    Default Re: ART vs. Dalvik cache: Are you seeing a performance difference?

    Quote Originally Posted by devilsfl View Post
    I liked ART better but I noticed I couldn't upload pics to facebook. Anyone else have this problem?
    I think this is only true for photos taken directly from Google backup. I can upload just fine if the pic is local and and I'm not using the Photos app.

    Sent from my Nexus 5 using Tapatalk
  18. #18  
    bubba3595's Avatar

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    Default Re: ART vs. Dalvik cache: Are you seeing a performance difference?

    I did it just to see what all the fuss was about. Battery life was about the same, but some apps were not able to run, so I switched back.
  19. #19  

    Default Re: ART vs. Dalvik cache: Are you seeing a performance difference?

    Someguy, I just stole your avatar. Thanks!
    gg22 likes this.
  20. #20  

    Default Re: ART vs. Dalvik cache: Are you seeing a performance difference?

    Quote Originally Posted by 5hi7h34d View Post
    Someguy, I just stole your avatar. Thanks!
    Lol.

    Posted via Android Central App
  21. #21  

    Default Re: ART vs. Dalvik cache: Are you seeing a performance difference?

    Interestingly, I do not find it on the Kit Kat update for the Nexus 10. Anyone else?
    Pat
    Nook Color - CM10.1 ( Jelly Bean 4.2.2) on eMMC
    Google Galaxy Nexus - stock Jelly Bean 4.3
    Galaxy Nexus 10 - stock KitKat 4.4.2
    Galaxy Nexus 7 (2nd Generation) - stock KitKat 4.4.2
    Chromecast
    Nexus 5 - stock KitKat 4.4.2
  22. #22  

    Default Re: ART vs. Dalvik cache: Are you seeing a performance difference?

    Quote Originally Posted by patruns View Post
    Interestingly, I do not find it on the Kit Kat update for the Nexus 10. Anyone else?
    I went looking for ART to test out on my 2012 Nexus 7 that is Quad-core Tegra 3 processor and it isn't there either. It is a shame since the 2013 Nexus 7 could use better battery life.



    Apparently ART is only available for Snapdragon-based devices. I can switch the runtime on N4, N5 and new N7 which are all based on Snapdragon but not on the first gen N7 (Tegra 3) and N10 (Exynos). It is plausible to make such restriction (because it can break the system) if the devs aren't tested it enough on devices other than Snapdragon.
    patruns likes this.
  23. #23  

    Default Re: ART vs. Dalvik cache: Are you seeing a performance difference?

    Interesting. I am not sure why that is. I would not think that a run time would be processor dependent.
    Pat
    Nook Color - CM10.1 ( Jelly Bean 4.2.2) on eMMC
    Google Galaxy Nexus - stock Jelly Bean 4.3
    Galaxy Nexus 10 - stock KitKat 4.4.2
    Galaxy Nexus 7 (2nd Generation) - stock KitKat 4.4.2
    Chromecast
    Nexus 5 - stock KitKat 4.4.2
  24. #24  

    Default Re: ART vs. Dalvik cache: Are you seeing a performance difference?

    Quote Originally Posted by patruns View Post
    Interesting. I am not sure why that is. I would not think that a run time would be processor dependent.
    Where do I find this on my note 3?

    Posted via Android Central App
  25. #25  

    Default Re: ART vs. Dalvik cache: Are you seeing a performance difference?

    Quote Originally Posted by stackberry369 View Post
    Where do I find this on my note 3?

    Posted via Android Central App
    In devices with Kit Kat that have it, it is in settings/developer options/about the 4th down "select runtime"
    Pat
    Nook Color - CM10.1 ( Jelly Bean 4.2.2) on eMMC
    Google Galaxy Nexus - stock Jelly Bean 4.3
    Galaxy Nexus 10 - stock KitKat 4.4.2
    Galaxy Nexus 7 (2nd Generation) - stock KitKat 4.4.2
    Chromecast
    Nexus 5 - stock KitKat 4.4.2
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