PublisherAdView.loadAd() blocks main thread on first load *only*

[Lisa Wray]

Hi,

We're seeing a delayed load on the very first time we load a PublisherAdView.  The delay blocks the main thread and is usually between 300ms-1000ms.  Following ad loads are usually less than 20ms.

We can reproduce this delay every time on fresh app launch.

In TraceView, here's the top method:

If I continue clicking on the parent method, after four clicks I get to:

We're using com.google.android.gms.ads.doubleclick.PublisherAdView and the version is 9.6.1.

I'm happy to send over a full trace as well if that would be helpful.

[Lisa Wray]

Here is a minimal sample project which shows a single ad load and displays a Snackbar showing how long the ad load took.

https://drive.google.com/file/d/0B9oLlyS_KCW1VURCQ3hNdnNKUGM/view?usp=sharing

On a Samsung S6, I've never seen the initial load take less than 300ms.  Please make sure to swipe the application away in Recent Apps between tests; if you leave the app running in the background between tests, the ad loading is fine.

[Vu Chau (Mobile Ads SDK Team)]

Hi Lisa,

Appreciated the trace results and the sample project. I checked with the SDK team, and we confirmed that the first ad load will always have this latency. This is the result of the SDK loading code from Google Play services, which corresponds to the dalvik methods shown in the trace files. 

Our recommendation is to call MobileAds.initialize early on in the app to force some of this class loading to happen sooner.

Cheers,

Vu Chau

Mobile Ads SDK Team

[Lisa Wray]

Aha so there is an initialize method!  Thanks, we'll see where we can put it.

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