SfListView low performance

Question

hi all,I'm migrating my XamarinForm app to Maui and i can see bad performance using listview on android.On XF it's working properly (android is always slow vs Ios but it accettable).Moving to Maui the performace is very bad, many seconds in order to load a page even if the layout of the list is easy.I can see many log messages as Explicit concurrent copying GC freed 43331(2070KB) AllocSpace objects, 7(140KB) LOS objects, 49% free, 16MB/33MB, paused 98us,55us total 133.565msI don't know if is maui framework or the component.Can you help me?thanks

Suthi Yuvaraj · Answer

Hi Luca,We have investigated the issue concerning "SfListView low performance." To gain a clearer understanding, we constructed a basic example that loads a substantial amount of data and conducted an analysis across three different controls: MAUI CollectionView, SfListView, and Xamarin.Forms SfListView. Upon examining the implementations in Xamarin and MAUI, we hypothesize that the underlying cause of the performance issue could be attributed to the MAUI framework. This is because it initiates an additional number of layout calls compared to Xamarin (i.e. measure and layout calls are not the same in MAUI and Xamarin).Regards,Suthi Yuvaraj

Luca · Answer

thanks for your check,appreciated!the problem is that it's impossibile to put in prod an app with this performance. The page load is very slow, oftern many seconds.i was reading NET8 release notes and i can find:​

.NET 8 introduces several new types aimed at improving app performance.

I'm asking myself where are these improvments!So what we can do/ just wait new releases?thanks

Suthi Yuvaraj · Answer

Luca,We would like to inform you that despite incorporating the latest
improvements from .NET 8 to enhance loading performance with a considerable
amount of data, we have identified a persistent lag in the performance of the
Framework control, an issue that is also mirrored in the SfListView. Also, we
will consider this as a feature enhancement, we will include the fix in any
of the upcoming releases, and we will update you once improvements are made. We will
appreciate your patience until then.

Luca · Answer

hi all,it's impossible to migrate a Xamarin form app to MAUI. the performance are very bad. Do you have any suggestion? thanks a lot!

Suthi Yuvaraj · Answer

Luca,We have checked your
requirement, Here are some of the steps we have tried to improve the scrolling
performance..
 When SfListView loads a large number of data, invoking
     the BeginInit and EndInit will improve the performance of the listview.
     SfListView gets refreshed each and every time a new item is added to the
     underlying collection. Because, when adding items at runtime, the
     DataSource gets refreshed. To avoid this behavior, use BeginInit() to stop the calling each time, and use EndInit() to start the
     RefreshListView calling when adding the number of finished items. We have
     attached the modified sample and video for your reference.

If you are using the DataTemplateSelector in the sample, setting ItemsCacheLimit will improve the scrolling performance when the
     datatemplateselector is used,  Based
     on this value, SfListView creates a number of ListViewItem for
     different templates in the view if a new template is created while
     scrolling, and reuses it if same template is used for improving the
     scrolling performance.
UG
Link: https://help.syncfusion.com/maui/listview/viewappearance#data-template-selector
 We suggest you set the IsScrollingEnabled
     property to false, which will load the entire SfListView items, here the
     ExtendedScrollView will not scroll, loads all the items to the entire
     height so that the performance is increased where the items are populated
     on initial loading, and placed inside the interactive scrollable control. Which
     will improve the scrolling performance.
UG Link: https://help.syncfusion.com/maui/listview/scrolling#listview-with-full-heightAlso please refer to the below documentation to improve the performance
while loading bulk dataUG Link: https://support.syncfusion.com/kb/article/11517/how-to-improve-performance-when-doing-bulk-changes-in-net-maui-listview-sflistviewPlease let us know if you have any concerns.Regards,Suthi Yuvaraj.