Ionic-framework: Ionic2--Open app too slow

[FourLeafClover]

Help! Help! Help!

When i open my app, it takes at least 8-10 seconds, how can i let my app open more quicker.

[ubaidazad]

Ionic2 is not supporting AoT and tree-shaking yet, may be in beta 12

[FourLeafClover]

Hi, whether the ionic can on demanding loading like webpack + es6.

[jgw96]

Hello, thanks for opening an issue with us! We are currently working on the final details of our new build process, which includes ahead of time compile, minification and tree shaking which will greatly improve load times and general performance. This is one of the features we want to have for beta.12, but as always that is subject to change if something crazy happens. Thanks for using Ionic!

[jgw96]

Also, this issue is the tracking issue for aot and tree shaking. Thanks!

[ghost]

Hello, please whats the latest. I'm sincerely in love with ionic2. But the lag has made me pause my development.

[dmastag]

Just wait a moment @i-Dee. Beta 12 is almost ready.
You can try out the bleeding edge if you are curious too see where the progress is now.

[ghost]

Whats bleeding edge @dmastag , is it the meeting notes?

[HockeyJustin]

Hi,

I am also experiencing an 8-10 second load with an empty app.

The repro:

NOTE FOR FUTURE READERS -> The latest version is quicker. Please see further posts below

1. Follow the basic tutorial on the ionic website for creating an app.

   _(ionic info)
   Cordova CLI: 6.4.0
   Ionic CLI Version: 2.1.8
   Ionic App Lib Version: 2.1.4
   OS: Windows 10
   Node Version: v6.9.1_

2. Add Android - cordova platform add android --save (and accept the android licence if needed.)

3. Make no other changes.
4. Test in Ripple (runs nice and quickly)
5. Publish using these steps.
6. Test on Samsung A3 and HTC M9.

Result on Phones:

Both have an 8-10 second load consistently.

Additional Info

Tried a similar procedure with Ionic1 to ensure it wasn't the phones or the publish process. The load was around 2-3 seconds (perfectly acceptable).

I love Ionic2, but this could stop us using the product as many consumers will not wait that long for an app to load.

[dmastag]

@HockeyJustin how did you build?
Did you use ionic build android --prod ?

[HockeyJustin]

@dmastag ionic build android --release, in line with step 5. I will have a look at trying it, and let you know how it goes.

[HockeyJustin]

@dmastag - Updated to the very latest and using the ionic --prod build as well as ionic --release.

The load is around 5 seconds (not as fast as Ionic1, but much better).

ionic info
ordova CLI: 6.5.0
_Ionic CLI Version: 2.2.1
Ionic App Lib Version: 2.2.0
ios-deploy version: Not installed
ios-sim version: Not installed
OS: Windows 10
Node Version: v6.9.1
Xcode version: Not installed_

Had forgotten, but I'd been using --release build as the --prod produces a '-debug.apk' which i had issues signing. I can sign '-release.apk' without any problems.

[dmastag]

@HockeyJustin you can do ionic build android --prod --release

[HockeyJustin]

For info, I tried the ionic side menu template (same ionic versions as above). Tried ionic build android --prod --release and ionic build android --prod.

The load time is still around 10-11 seconds on my Samsung A3. Everything is sweet after the initial load, but the startup is still very slow.

Won't bother you any more on it.

[dmastag]

Curious why it went down from your 5 secs to 10-11 secs.

[HockeyJustin]

@dmastag - Do you know what the benchmarks are please (I have googled)? No worries if you have too much on to reply. I just thought it might be good for the thread to know what the expectation is.

[gbelmm]

npm install @ionic/app-scripts@latest --save-dev

[HockeyJustin]

@gbelmm tried the update. Still 9.5 seconds on average.

[dmastag]

@HockeyJustin what OS is your Samsung A3 on? If on 4.4 then could you try using crosswalk
http://ionicframework.com/docs/cli/browsers.html

[HockeyJustin]

@dmastag - I tried using ionic plugin add cordova-plugin-crosswalk-webview. No difference in load time. My android os is v6.0.1.

[mariohmol]

@HockeyJustin have news about it? having same issue .. 15s to load and tryed a lot of different things

[HockeyJustin]

@mariohmol - nope. Was going to download the latest and try last week, but haven't gotten round to it. No joy last time i tried.

[HockeyJustin]

Just in case anyone should find this thread online - the issue is fixed in the current version (Ionic 3)

[mariohmol]

@HockeyJustin your app is taking how many seconds to show the first page?

I updated to the latest and i'm getting like 20s to load..

will try to profile to see if i can improve or test withou any action on load... but until now kind the same =(

[HockeyJustin]

@mariohmol - I updated to 3.6.0, created the starter (cutePuppyPics > super template) and now the load is under 3 seconds.

[ionitron-bot[bot]]

Thanks for the issue! This issue is being locked to prevent comments that are not relevant to the original issue. If this is still an issue with the latest version of Ionic, please create a new issue and ensure the template is fully filled out.