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Issue 5682: Bug: Poor performance adding markers: each marker takes about 25ms on the UI thread
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Status:  Confirmed
Owner:  ----


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Reported by [email protected], Aug 1, 2013
Adding a marker takes about 24-28ms, while removing a marker is much faster. Since this must happen on the UI thread, an app will become unresponsive if more than 40 markers are added at a time. After the markers are on the map, performance is acceptable. It seems that only adding them takes time. Alternatively, it would be great to do this off the UI thread.
Aug 11, 2013
Project Member #1 [email protected]
What SDK is this related to?
Status: NeedsMoreInfo
Aug 11, 2013
#2 [email protected]
This happens on the Android SDK.

After doing more testing, I noticed that the slow call was actually BitmapDescriptorFactory.fromBitmap(). This method also becomes unpredictable (in terms of run time) after a few hundred calls. I was able to work around this by only generating a BitmapDescriptor once for each marker, but the method should probably run faster anyhow.
Aug 18, 2013
#3 [email protected]
(No comment was entered for this change.)
Labels: Type-Defect ApiType-Android2
Aug 18, 2013
#4 [email protected]
(No comment was entered for this change.)
Status: New
Oct 31, 2013
#5 [email protected]
Any update on this?
I'm currently batch-adding a few hundred MarkerOptions to the map and it takes about 500ms for 250 markers.
In the maps V1 we could batch add many and call populate() once to make them visible. I think a similar approach would be helpful since it seams that each add/remove triggers a whole bunch of stuff in the background!
Sep 29, 2014
Project Member #6 [email protected]
(No comment was entered for this change.)
Status: Confirmed
Labels: Internal-17705770
Jun 22, 2015
Project Member #7 [email protected]
 Issue 8005  has been merged into this issue.
Nov 3, 2015
#8 [email protected]
Any update on this issue? It's been over 2 years. I would really like to see this fixed or at least improved. It affects basically every single app that displays dynamic data. It should be unacceptable to have this scroll chunkiness when displaying only 20-100 markers when we have the processing power we have now on modern devices, right? I'm assuming the reason this is a technical challenge is because the V2 API is using some kind of IPC-call-per-map-mutation that's adding a huge hit for every 'round trip'. I can imagine it's hard to fix, but there has to be SOME solution to be able to change map data and keep a decent frame rate. Currently the only way to keep 60fps smooth scrolling is to just never change the data on the map.

Thanks!
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