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iOS app startup slow in debug
Description
When debugging iOS the app stalls for a long time on the splash screen. Android is significantly faster. I'm using defaults from a clean install on Ventura. VS Mac 17.4 stable, and .NET 7 GA.
https://user-images.githubusercontent.com/41873/202016900-e3cde432-18d2-4351-8703-3bc59728164e.mp4
Steps to Reproduce
Run the CarouselViewDemos project from our samples. Update to 7.0.
Link to public reproduction project repository
https://github.com/dotnet/maui-samples/blob/main/6.0/UserInterface/Views/CarouselViewDemos/
Version with bug
7.0 (current)
Last version that worked well
Unknown/Other
Affected platforms
iOS
Affected platform versions
16
Did you find any workaround?
nope
Relevant log output
No response
We've moved this issue to the Backlog milestone. This means that it is not going to be worked on for the coming release. We will reassess the backlog following the current release and consider this item at that time. To learn more about our issue management process and to have better expectation regarding different types of issues you can read our Triage Process.
This looks a bit slower than it should be, but I can't repro with the referenced sample project.
So I have a few questions:
- Are all projects slow, or just this one?
- Is the app just as slow to launch if you tap on it in the simulator?
- If you have an iOS device, do you see the same slowness there as well?
- Is there anything printed in the Application Output in VSMac when the app is launching?
@rolfbjarne
Are all projects slow, or just this one?
all
Is the app just as slow to launch if you tap on it in the simulator?
yes
If you have an iOS device, do you see the same slowness there as well?
If I can get the app only a device, I'll let you know. :(
Is there anything printed in the Application Output in VSMac when the app is launching?
This is what I see while the splash is up until the app is loaded.
xcrun simctl launch --stdout=/dev/ttys001 --stderr=/dev/ttys002 --terminate-running-process 40257B3B-DE4C-4F6E-BE77-D724EFA7900F com.simplyprofound.carouselviewdemos -monodevelop-port 10000
com.simplyprofound.carouselviewdemos: 66898
objc[66898]: Class CDPCABackupRecoveryReporter is implemented in both /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/System/Library/PrivateFrameworks/CoreCDPInternal.framework/CoreCDPInternal (0x15ff1fa48) and /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/System/Library/PrivateFrameworks/CoreCDP.framework/CoreCDP (0x15ed23958). One of the two will be used. Which one is undefined.
objc[66898]: Class CDPCAReporter is implemented in both /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/System/Library/PrivateFrameworks/CoreCDPInternal.framework/CoreCDPInternal (0x15ff1ef58) and /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/System/Library/PrivateFrameworks/CoreCDP.framework/CoreCDP (0x15ed23ae8). One of the two will be used. Which one is undefined.
objc[66898]: Class SBFCARendererImageRepresentation is implemented in both /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/System/Library/PrivateFrameworks/SpringBoardFoundation.framework/SpringBoardFoundation (0x15f247028) and /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/System/Library/PrivateFrameworks/PaperBoardUI.framework/PaperBoardUI (0x15f535218). One of the two will be used. Which one is undefined.
Loaded assembly: /Users/dmo/Library/Developer/CoreSimulator/Devices/40257B3B-DE4C-4F6E-BE77-D724EFA7900F/data/Containers/Bundle/Application/34132EC2-B9B4-48CD-AC24-FBFCCC2967CF/CarouselViewDemos.app/Microsoft.iOS.dll [External]
Loaded assembly: /Users/dmo/Library/Developer/CoreSimulator/Devices/40257B3B-DE4C-4F6E-BE77-D724EFA7900F/data/Containers/Bundle/Application/34132EC2-B9B4-48CD-AC24-FBFCCC2967CF/CarouselViewDemos.app/System.Runtime.dll [External]
Loaded assembly: /Users/dmo/Library/Developer/CoreSimulator/Devices/40257B3B-DE4C-4F6E-BE77-D724EFA7900F/data/Containers/Bundle/Application/34132EC2-B9B4-48CD-AC24-FBFCCC2967CF/CarouselViewDemos.app/System.Collections.dll [External]
Loaded assembly: /Users/dmo/Library/Developer/CoreSimulator/Devices/40257B3B-DE4C-4F6E-BE77-D724EFA7900F/data/Containers/Bundle/Application/34132EC2-B9B4-48CD-AC24-FBFCCC2967CF/CarouselViewDemos.app/System.Runtime.InteropServices.dll [External]
Loaded assembly: /Users/dmo/Library/Developer/CoreSimulator/Devices/40257B3B-DE4C-4F6E-BE77-D724EFA7900F/data/Containers/Bundle/Application/34132EC2-B9B4-48CD-AC24-FBFCCC2967CF/CarouselViewDemos.app/System.Threading.Thread.dll [External]
Loaded assembly: /Users/dmo/Library/Developer/CoreSimulator/Devices/40257B3B-DE4C-4F6E-BE77-D724EFA7900F/data/Containers/Bundle/Application/34132EC2-B9B4-48CD-AC24-FBFCCC2967CF/CarouselViewDemos.app/System.Threading.dll [External]
Loaded assembly: /Users/dmo/Library/Developer/CoreSimulator/Devices/40257B3B-DE4C-4F6E-BE77-D724EFA7900F/data/Containers/Bundle/Application/34132EC2-B9B4-48CD-AC24-FBFCCC2967CF/CarouselViewDemos.app/CarouselViewDemos.dll
Loaded assembly: /Users/dmo/Library/Developer/CoreSimulator/Devices/40257B3B-DE4C-4F6E-BE77-D724EFA7900F/data/Containers/Bundle/Application/34132EC2-B9B4-48CD-AC24-FBFCCC2967CF/CarouselViewDemos.app/Microsoft.Maui.Controls.dll [External]
Loaded assembly: /Users/dmo/Library/Developer/CoreSimulator/Devices/40257B3B-DE4C-4F6E-BE77-D724EFA7900F/data/Containers/Bundle/Application/34132EC2-B9B4-48CD-AC24-FBFCCC2967CF/CarouselViewDemos.app/System.ObjectModel.dll [External]
Loaded assembly: /Users/dmo/Library/Developer/CoreSimulator/Devices/40257B3B-DE4C-4F6E-BE77-D724EFA7900F/data/Containers/Bundle/Application/34132EC2-B9B4-48CD-AC24-FBFCCC2967CF/CarouselViewDemos.app/Microsoft.Maui.dll [External]
Loaded assembly: /Users/dmo/Library/Developer/CoreSimulator/Devices/40257B3B-DE4C-4F6E-BE77-D724EFA7900F/data/Containers/Bundle/Application/34132EC2-B9B4-48CD-AC24-FBFCCC2967CF/CarouselViewDemos.app/Microsoft.Maui.Controls.Xaml.dll [External]
Loaded assembly: /Users/dmo/Library/Developer/CoreSimulator/Devices/40257B3B-DE4C-4F6E-BE77-D724EFA7900F/data/Containers/Bundle/Application/34132EC2-B9B4-48CD-AC24-FBFCCC2967CF/CarouselViewDemos.app/System.ComponentModel.dll [External]
Loaded assembly: /Users/dmo/Library/Developer/CoreSimulator/Devices/40257B3B-DE4C-4F6E-BE77-D724EFA7900F/data/Containers/Bundle/Application/34132EC2-B9B4-48CD-AC24-FBFCCC2967CF/CarouselViewDemos.app/System.Private.Uri.dll [External]
Loaded assembly: /Users/dmo/Library/Developer/CoreSimulator/Devices/40257B3B-DE4C-4F6E-BE77-D724EFA7900F/data/Containers/Bundle/Application/34132EC2-B9B4-48CD-AC24-FBFCCC2967CF/CarouselViewDemos.app/Microsoft.Maui.Graphics.dll [External]
Loaded assembly: /Users/dmo/Library/Developer/CoreSimulator/Devices/40257B3B-DE4C-4F6E-BE77-D724EFA7900F/data/Containers/Bundle/Application/34132EC2-B9B4-48CD-AC24-FBFCCC2967CF/CarouselViewDemos.app/System.Numerics.Vectors.dll [External]
Loaded assembly: /Users/dmo/Library/Developer/CoreSimulator/Devices/40257B3B-DE4C-4F6E-BE77-D724EFA7900F/data/Containers/Bundle/Application/34132EC2-B9B4-48CD-AC24-FBFCCC2967CF/CarouselViewDemos.app/System.Xml.ReaderWriter.dll [External]
Loaded assembly: /Users/dmo/Library/Developer/CoreSimulator/Devices/40257B3B-DE4C-4F6E-BE77-D724EFA7900F/data/Containers/Bundle/Application/34132EC2-B9B4-48CD-AC24-FBFCCC2967CF/CarouselViewDemos.app/System.Private.Xml.dll [External]
Loaded assembly: /Users/dmo/Library/Developer/CoreSimulator/Devices/40257B3B-DE4C-4F6E-BE77-D724EFA7900F/data/Containers/Bundle/Application/34132EC2-B9B4-48CD-AC24-FBFCCC2967CF/CarouselViewDemos.app/System.Memory.dll [External]
Loaded assembly: /Users/dmo/Library/Developer/CoreSimulator/Devices/40257B3B-DE4C-4F6E-BE77-D724EFA7900F/data/Containers/Bundle/Application/34132EC2-B9B4-48CD-AC24-FBFCCC2967CF/CarouselViewDemos.app/System.Diagnostics.TraceSource.dll [External]
Loaded assembly: /Users/dmo/Library/Developer/CoreSimulator/Devices/40257B3B-DE4C-4F6E-BE77-D724EFA7900F/data/Containers/Bundle/Application/34132EC2-B9B4-48CD-AC24-FBFCCC2967CF/CarouselViewDemos.app/System.Collections.NonGeneric.dll [External]
Loaded assembly: /Users/dmo/Library/Developer/CoreSimulator/Devices/40257B3B-DE4C-4F6E-BE77-D724EFA7900F/data/Containers/Bundle/Application/34132EC2-B9B4-48CD-AC24-FBFCCC2967CF/CarouselViewDemos.app/System.Collections.Specialized.dll [External]
Loaded assembly: /Users/dmo/Library/Developer/CoreSimulator/Devices/40257B3B-DE4C-4F6E-BE77-D724EFA7900F/data/Containers/Bundle/Application/34132EC2-B9B4-48CD-AC24-FBFCCC2967CF/CarouselViewDemos.app/System.ComponentModel.Primitives.dll [External]
Loaded assembly: /Users/dmo/Library/Developer/CoreSimulator/Devices/40257B3B-DE4C-4F6E-BE77-D724EFA7900F/data/Containers/Bundle/Application/34132EC2-B9B4-48CD-AC24-FBFCCC2967CF/CarouselViewDemos.app/System.Text.RegularExpressions.dll [External]
Loaded assembly: /Users/dmo/Library/Developer/CoreSimulator/Devices/40257B3B-DE4C-4F6E-BE77-D724EFA7900F/data/Containers/Bundle/Application/34132EC2-B9B4-48CD-AC24-FBFCCC2967CF/CarouselViewDemos.app/System.Reflection.Emit.ILGeneration.dll [External]
Loaded assembly: /Users/dmo/Library/Developer/CoreSimulator/Devices/40257B3B-DE4C-4F6E-BE77-D724EFA7900F/data/Containers/Bundle/Application/34132EC2-B9B4-48CD-AC24-FBFCCC2967CF/CarouselViewDemos.app/System.Collections.Concurrent.dll [External]
Loaded assembly: /Users/dmo/Library/Developer/CoreSimulator/Devices/40257B3B-DE4C-4F6E-BE77-D724EFA7900F/data/Containers/Bundle/Application/34132EC2-B9B4-48CD-AC24-FBFCCC2967CF/CarouselViewDemos.app/System.Reflection.Emit.Lightweight.dll [External]
Loaded assembly: /Users/dmo/Library/Developer/CoreSimulator/Devices/40257B3B-DE4C-4F6E-BE77-D724EFA7900F/data/Containers/Bundle/Application/34132EC2-B9B4-48CD-AC24-FBFCCC2967CF/CarouselViewDemos.app/System.Reflection.Primitives.dll [External]
Loaded assembly: /Users/dmo/Library/Developer/CoreSimulator/Devices/40257B3B-DE4C-4F6E-BE77-D724EFA7900F/data/Containers/Bundle/Application/34132EC2-B9B4-48CD-AC24-FBFCCC2967CF/CarouselViewDemos.app/System.Net.Primitives.dll [External]
Loaded assembly: /Users/dmo/Library/Developer/CoreSimulator/Devices/40257B3B-DE4C-4F6E-BE77-D724EFA7900F/data/Containers/Bundle/Application/34132EC2-B9B4-48CD-AC24-FBFCCC2967CF/CarouselViewDemos.app/System.Diagnostics.Tracing.dll [External]
Loaded assembly: /Users/dmo/Library/Developer/CoreSimulator/Devices/40257B3B-DE4C-4F6E-BE77-D724EFA7900F/data/Containers/Bundle/Application/34132EC2-B9B4-48CD-AC24-FBFCCC2967CF/CarouselViewDemos.app/Microsoft.Win32.Primitives.dll [External]
Loaded assembly: /Users/dmo/Library/Developer/CoreSimulator/Devices/40257B3B-DE4C-4F6E-BE77-D724EFA7900F/data/Containers/Bundle/Application/34132EC2-B9B4-48CD-AC24-FBFCCC2967CF/CarouselViewDemos.app/System.Net.Http.dll [External]
Loaded assembly: /Users/dmo/Library/Developer/CoreSimulator/Devices/40257B3B-DE4C-4F6E-BE77-D724EFA7900F/data/Containers/Bundle/Application/34132EC2-B9B4-48CD-AC24-FBFCCC2967CF/CarouselViewDemos.app/System.Net.Security.dll [External]
Loaded assembly: /Users/dmo/Library/Developer/CoreSimulator/Devices/40257B3B-DE4C-4F6E-BE77-D724EFA7900F/data/Containers/Bundle/Application/34132EC2-B9B4-48CD-AC24-FBFCCC2967CF/CarouselViewDemos.app/System.Security.Cryptography.dll [External]
Loaded assembly: /Users/dmo/Library/Developer/CoreSimulator/Devices/40257B3B-DE4C-4F6E-BE77-D724EFA7900F/data/Containers/Bundle/Application/34132EC2-B9B4-48CD-AC24-FBFCCC2967CF/CarouselViewDemos.app/System.Formats.Asn1.dll [External]
Loaded assembly: /Users/dmo/Library/Developer/CoreSimulator/Devices/40257B3B-DE4C-4F6E-BE77-D724EFA7900F/data/Containers/Bundle/Application/34132EC2-B9B4-48CD-AC24-FBFCCC2967CF/CarouselViewDemos.app/System.Text.Encoding.Extensions.dll [External]
Loaded assembly: /Users/dmo/Library/Developer/CoreSimulator/Devices/40257B3B-DE4C-4F6E-BE77-D724EFA7900F/data/Containers/Bundle/Application/34132EC2-B9B4-48CD-AC24-FBFCCC2967CF/CarouselViewDemos.app/System.Runtime.Numerics.dll [External]
Loaded assembly: /Users/dmo/Library/Developer/CoreSimulator/Devices/40257B3B-DE4C-4F6E-BE77-D724EFA7900F/data/Containers/Bundle/Application/34132EC2-B9B4-48CD-AC24-FBFCCC2967CF/CarouselViewDemos.app/System.Net.Sockets.dll [External]
Loaded assembly: /Users/dmo/Library/Developer/CoreSimulator/Devices/40257B3B-DE4C-4F6E-BE77-D724EFA7900F/data/Containers/Bundle/Application/34132EC2-B9B4-48CD-AC24-FBFCCC2967CF/CarouselViewDemos.app/System.Net.NameResolution.dll [External]
Loaded assembly: /Users/dmo/Library/Developer/CoreSimulator/Devices/40257B3B-DE4C-4F6E-BE77-D724EFA7900F/data/Containers/Bundle/Application/34132EC2-B9B4-48CD-AC24-FBFCCC2967CF/CarouselViewDemos.app/System.Threading.ThreadPool.dll [External]
Loaded assembly: /Users/dmo/Library/Developer/CoreSimulator/Devices/40257B3B-DE4C-4F6E-BE77-D724EFA7900F/data/Containers/Bundle/Application/34132EC2-B9B4-48CD-AC24-FBFCCC2967CF/CarouselViewDemos.app/System.Security.Claims.dll [External]
Loaded assembly: /Users/dmo/Library/Developer/CoreSimulator/Devices/40257B3B-DE4C-4F6E-BE77-D724EFA7900F/data/Containers/Bundle/Application/34132EC2-B9B4-48CD-AC24-FBFCCC2967CF/CarouselViewDemos.app/System.Linq.dll [External]
Loaded assembly: /Users/dmo/Library/Developer/CoreSimulator/Devices/40257B3B-DE4C-4F6E-BE77-D724EFA7900F/data/Containers/Bundle/Application/34132EC2-B9B4-48CD-AC24-FBFCCC2967CF/CarouselViewDemos.app/System.Diagnostics.DiagnosticSource.dll [External]
Loaded assembly: /Users/dmo/Library/Developer/CoreSimulator/Devices/40257B3B-DE4C-4F6E-BE77-D724EFA7900F/data/Containers/Bundle/Application/34132EC2-B9B4-48CD-AC24-FBFCCC2967CF/CarouselViewDemos.app/System.Net.Quic.dll [External]
Loaded assembly: /Users/dmo/Library/Developer/CoreSimulator/Devices/40257B3B-DE4C-4F6E-BE77-D724EFA7900F/data/Containers/Bundle/Application/34132EC2-B9B4-48CD-AC24-FBFCCC2967CF/CarouselViewDemos.app/System.IO.Compression.dll [External]
Loaded assembly: /Users/dmo/Library/Developer/CoreSimulator/Devices/40257B3B-DE4C-4F6E-BE77-D724EFA7900F/data/Containers/Bundle/Application/34132EC2-B9B4-48CD-AC24-FBFCCC2967CF/CarouselViewDemos.app/System.IO.Compression.Brotli.dll [External]
Loaded assembly: /Users/dmo/Library/Developer/CoreSimulator/Devices/40257B3B-DE4C-4F6E-BE77-D724EFA7900F/data/Containers/Bundle/Application/34132EC2-B9B4-48CD-AC24-FBFCCC2967CF/CarouselViewDemos.app/System.Threading.Channels.dll [External]
Loaded assembly: /Users/dmo/Library/Developer/CoreSimulator/Devices/40257B3B-DE4C-4F6E-BE77-D724EFA7900F/data/Containers/Bundle/Application/34132EC2-B9B4-48CD-AC24-FBFCCC2967CF/CarouselViewDemos.app/System.Net.NetworkInformation.dll [External]
Loaded assembly: /Users/dmo/Library/Developer/CoreSimulator/Devices/40257B3B-DE4C-4F6E-BE77-D724EFA7900F/data/Containers/Bundle/Application/34132EC2-B9B4-48CD-AC24-FBFCCC2967CF/CarouselViewDemos.app/System.Reflection.Emit.dll [External]
Loaded assembly: /Users/dmo/Library/Developer/CoreSimulator/Devices/40257B3B-DE4C-4F6E-BE77-D724EFA7900F/data/Containers/Bundle/Application/34132EC2-B9B4-48CD-AC24-FBFCCC2967CF/CarouselViewDemos.app/System.Runtime.Loader.dll [External]
Loaded assembly: /Users/dmo/Library/Developer/CoreSimulator/Devices/40257B3B-DE4C-4F6E-BE77-D724EFA7900F/data/Containers/Bundle/Application/34132EC2-B9B4-48CD-AC24-FBFCCC2967CF/CarouselViewDemos.app/System.Linq.Expressions.dll [External]
Loaded assembly: /Users/dmo/Library/Developer/CoreSimulator/Devices/40257B3B-DE4C-4F6E-BE77-D724EFA7900F/data/Containers/Bundle/Application/34132EC2-B9B4-48CD-AC24-FBFCCC2967CF/CarouselViewDemos.app/System.ComponentModel.TypeConverter.dll [External]
Loaded assembly: /Users/dmo/Library/Developer/CoreSimulator/Devices/40257B3B-DE4C-4F6E-BE77-D724EFA7900F/data/Containers/Bundle/Application/34132EC2-B9B4-48CD-AC24-FBFCCC2967CF/CarouselViewDemos.app/System.Drawing.Primitives.dll [External]
Loaded assembly: /Users/dmo/Library/Developer/CoreSimulator/Devices/40257B3B-DE4C-4F6E-BE77-D724EFA7900F/data/Containers/Bundle/Application/34132EC2-B9B4-48CD-AC24-FBFCCC2967CF/CarouselViewDemos.app/System.Runtime.Serialization.Formatters.dll [External]
Loaded assembly: /Users/dmo/Library/Developer/CoreSimulator/Devices/40257B3B-DE4C-4F6E-BE77-D724EFA7900F/data/Containers/Bundle/Application/34132EC2-B9B4-48CD-AC24-FBFCCC2967CF/CarouselViewDemos.app/System.Resources.Writer.dll [External]
Loaded assembly: /Users/dmo/Library/Developer/CoreSimulator/Devices/40257B3B-DE4C-4F6E-BE77-D724EFA7900F/data/Containers/Bundle/Application/34132EC2-B9B4-48CD-AC24-FBFCCC2967CF/CarouselViewDemos.app/System.Xml.XDocument.dll [External]
Loaded assembly: /Users/dmo/Library/Developer/CoreSimulator/Devices/40257B3B-DE4C-4F6E-BE77-D724EFA7900F/data/Containers/Bundle/Application/34132EC2-B9B4-48CD-AC24-FBFCCC2967CF/CarouselViewDemos.app/System.Private.Xml.Linq.dll [External]
Loaded assembly: /Users/dmo/Library/Developer/CoreSimulator/Devices/40257B3B-DE4C-4F6E-BE77-D724EFA7900F/data/Containers/Bundle/Application/34132EC2-B9B4-48CD-AC24-FBFCCC2967CF/CarouselViewDemos.app/Microsoft.Extensions.Logging.Abstractions.dll [External]
Loaded assembly: /Users/dmo/Library/Developer/CoreSimulator/Devices/40257B3B-DE4C-4F6E-BE77-D724EFA7900F/data/Containers/Bundle/Application/34132EC2-B9B4-48CD-AC24-FBFCCC2967CF/CarouselViewDemos.app/Microsoft.Extensions.DependencyInjection.Abstractions.dll [External]
Loaded assembly: /Users/dmo/Library/Developer/CoreSimulator/Devices/40257B3B-DE4C-4F6E-BE77-D724EFA7900F/data/Containers/Bundle/Application/34132EC2-B9B4-48CD-AC24-FBFCCC2967CF/CarouselViewDemos.app/Microsoft.Maui.Essentials.dll [External]
Loaded assembly: /Users/dmo/Library/Developer/CoreSimulator/Devices/40257B3B-DE4C-4F6E-BE77-D724EFA7900F/data/Containers/Bundle/Application/34132EC2-B9B4-48CD-AC24-FBFCCC2967CF/CarouselViewDemos.app/System.Console.dll [External]
Loaded assembly: /Users/dmo/Library/Developer/CoreSimulator/Devices/40257B3B-DE4C-4F6E-BE77-D724EFA7900F/data/Containers/Bundle/Application/34132EC2-B9B4-48CD-AC24-FBFCCC2967CF/CarouselViewDemos.app/Microsoft.Extensions.Configuration.Abstractions.dll [External]
Loaded assembly: /Users/dmo/Library/Developer/CoreSimulator/Devices/40257B3B-DE4C-4F6E-BE77-D724EFA7900F/data/Containers/Bundle/Application/34132EC2-B9B4-48CD-AC24-FBFCCC2967CF/CarouselViewDemos.app/Microsoft.Extensions.Primitives.dll [External]
Loaded assembly: /Users/dmo/Library/Developer/CoreSimulator/Devices/40257B3B-DE4C-4F6E-BE77-D724EFA7900F/data/Containers/Bundle/Application/34132EC2-B9B4-48CD-AC24-FBFCCC2967CF/CarouselViewDemos.app/Microsoft.Extensions.Configuration.dll [External]
Loaded assembly: /Users/dmo/Library/Developer/CoreSimulator/Devices/40257B3B-DE4C-4F6E-BE77-D724EFA7900F/data/Containers/Bundle/Application/34132EC2-B9B4-48CD-AC24-FBFCCC2967CF/CarouselViewDemos.app/Microsoft.Extensions.Logging.dll [External]
Loaded assembly: /Users/dmo/Library/Developer/CoreSimulator/Devices/40257B3B-DE4C-4F6E-BE77-D724EFA7900F/data/Containers/Bundle/Application/34132EC2-B9B4-48CD-AC24-FBFCCC2967CF/CarouselViewDemos.app/Microsoft.Extensions.Options.dll [External]
Loaded assembly: /Users/dmo/Library/Developer/CoreSimulator/Devices/40257B3B-DE4C-4F6E-BE77-D724EFA7900F/data/Containers/Bundle/Application/34132EC2-B9B4-48CD-AC24-FBFCCC2967CF/CarouselViewDemos.app/Microsoft.Extensions.DependencyInjection.dll [External]
2022-11-18 15:13:50.758986-0600 CarouselViewDemos[66898:2256383] SecTaskLoadEntitlements failed error=22 cs_flags=200, pid=66898
2022-11-18 15:13:50.762169-0600 CarouselViewDemos[66898:2256383] SecTaskCopyDebugDescription: CarouselViewDemo[66898]/0#-1 LF=0
2022-11-18 15:13:50.882694-0600 CarouselViewDemos[66898:2256383] SecTaskLoadEntitlements failed error=22 cs_flags=200, pid=66898
2022-11-18 15:13:50.883569-0600 CarouselViewDemos[66898:2256383] SecTaskCopyDebugDescription: CarouselViewDemo[66898]/0#-1 LF=0
2022-11-18 15:13:51.742946-0600 CarouselViewDemos[66898:2257028] SecTaskLoadEntitlements failed error=22 cs_flags=200, pid=66898
2022-11-18 15:13:51.743650-0600 CarouselViewDemos[66898:2257028] SecTaskCopyDebugDescription: CarouselViewDemo[66898]/0#-1 LF=0
2022-11-18 15:13:52.113644-0600 CarouselViewDemos[66898:2256383] [TableView] Warning once only: UITableView was told to layout its visible cells and other contents without being in the view hierarchy (the table view or one of its superviews has not been added to a window). This may cause bugs by forcing views inside the table view to load and perform layout without accurate information (e.g. table view bounds, trait collection, layout margins, safe area insets, etc), and will also cause unnecessary performance overhead due to extra layout passes. Make a symbolic breakpoint at UITableViewAlertForLayoutOutsideViewHierarchy to catch this in the debugger and see what caused this to occur, so you can avoid this action altogether if possible, or defer it until the table view has been added to a window. Table view: <_UIMoreListTableView: 0x7f9f0fe81000; frame = (0 0; 0 0); clipsToBounds = YES; gestureRecognizers = <NSArray: 0x600000e28330>; backgroundColor = <UIDynamicSystemColor: 0x600001566880; name = tableBackgroundColor>; layer = <CALayer: 0x6000007c3880>; contentOffset: {0, 0}; contentSize: {0, 0}; adjustedContentInset: {0, 0, 0, 0}; dataSource: <UIMoreListController: 0x7f9f0e738c10>>
2022-11-18 15:13:52.628459-0600 CarouselViewDemos[66898:2256541] Warning: observer object was not disposed manually with Dispose()
2022-11-18 15:13:52.628861-0600 CarouselViewDemos[66898:2256541] Warning: observer object was not disposed manually with Dispose()
@rolfbjarne I was able to deploy to my iPhone 14 Pro and the startup screen only appeared for a few seconds. That's what I expect to see on the simulator as well, not 30s+ very time even with XAML Hot Reload disabled.
This is somewhat strange :/
- Is a plain iOS app (
dotnet new ios) slow as well? - If so, is even an Xcode project slow?
@davidortinau this might help, no promises though. I've just spent the entire day fighting slow start-up on my iPad, so slow that iOS was killing the app. I started messing about with Hot Reload based on your comments and found the following -
- disable Hot Reload for Xamarin but leaving it enabled for MAUI
- build + run MAUI project on the physical device
- re-enable Xamarin options
- build + run MAUI project on the physical device
Now the app launches fast enough so iOS doesn't kill it and also Hot Reload has started working.
As I say, no promises since your problems are with the simulator and mine were with a physical device.
@rolfbjarne we're having similar issues (https://github.com/unoplatform/uno/issues/10748) with Uno apps, the startup is slow enough that the app is getting killed by the OS. We tried disabling Hot Reload (not sure if it applies) and disabling the Interpreter, but it does not help.
@jeromelaban that stack trace here: https://user-images.githubusercontent.com/57812285/208118459-60395490-51c2-4b78-aa97-68e0b4caed15.png makes me think it's a deadlock of some kind. A fully symbolicated crash report will show what the app is doing (this requires disabling the interpreter to be useful), alternative I can have a look if I get a test project.
I am in the exact same situation, my app wasnt starting at all. So I tried https://github.com/dotnet/maui-samples -> WorkingWithMaps example and I am getting the exact same behaviour.
I know very little regarding iOS dev but looks to me like a watchdog as mentioned is terminating the app after prolonged period of time.
I tried disabling Hot Reload for Maui but that hasnt helped either. Any suggestions?
I don't understand how this can be moved to 'the Backlog milestone. ' given that it literally prevents development on iOS devices? Is there anything more severe than a showstopper bug?
Loaded assembly: /private/var/containers/Bundle/Application/C8D1844A-F505-4540-BB1F-01E1C9FC8B99/WorkingWithMaps.app/Microsoft.iOS.dll [External]
Loaded assembly: /private/var/containers/Bundle/Application/C8D1844A-F505-4540-BB1F-01E1C9FC8B99/WorkingWithMaps.app/System.Runtime.dll [External]
Loaded assembly: /private/var/containers/Bundle/Application/C8D1844A-F505-4540-BB1F-01E1C9FC8B99/WorkingWithMaps.app/System.Collections.dll [External]
Loaded assembly: /private/var/containers/Bundle/Application/C8D1844A-F505-4540-BB1F-01E1C9FC8B99/WorkingWithMaps.app/System.Runtime.InteropServices.dll [External]
Loaded assembly: /private/var/containers/Bundle/Application/C8D1844A-F505-4540-BB1F-01E1C9FC8B99/WorkingWithMaps.app/System.Threading.Thread.dll [External]
Loaded assembly: /private/var/containers/Bundle/Application/C8D1844A-F505-4540-BB1F-01E1C9FC8B99/WorkingWithMaps.app/System.Threading.dll [External]
Loaded assembly: /private/var/containers/Bundle/Application/C8D1844A-F505-4540-BB1F-01E1C9FC8B99/WorkingWithMaps.app/System.Net.Http.dll [External]
Loaded assembly: /private/var/containers/Bundle/Application/C8D1844A-F505-4540-BB1F-01E1C9FC8B99/WorkingWithMaps.app/System.Net.Primitives.dll [External]
Loaded assembly: /private/var/containers/Bundle/Application/C8D1844A-F505-4540-BB1F-01E1C9FC8B99/WorkingWithMaps.app/System.Numerics.Vectors.dll [External]
Loaded assembly: /private/var/containers/Bundle/Application/C8D1844A-F505-4540-BB1F-01E1C9FC8B99/WorkingWithMaps.app/System.Net.Sockets.dll [External]
Loaded assembly: /private/var/containers/Bundle/Application/C8D1844A-F505-4540-BB1F-01E1C9FC8B99/WorkingWithMaps.app/System.Drawing.Primitives.dll [External]
Loaded assembly: /private/var/containers/Bundle/Application/C8D1844A-F505-4540-BB1F-01E1C9FC8B99/WorkingWithMaps.app/System.Private.Uri.dll [External]
The app has been terminated.
@rolfbjarne I can duplicate this with dotnet new ios and VSfM. I used net6.0-ios since it's LTS.
I just put a breakpoint on the first line, start debugging on my iPhone 12 (iOS 16.2) and wait 20 seconds for the watchdog to kill the app.
Window = new UIWindow (UIScreen.MainScreen.Bounds);
Has something changed in mlaunch that would make the OS not think the process is being debugged ? IIRC the watchdog was an issue solved a long time ago (monotouch era).
Weirdly this crash does not get symbolicated for me neither... even if I had (sadly) no such issue with other projects :) OTOH I'm pretty sure it's just pointing to the current line of code (breakpoint) and debugger.
As a follow-up I initially thought this problem might be isolated to the fact that I was using an older device iPhone 6s but I have just tested against an iPhone SE and experienced the same behaviour so this definitely appears to be a bug across at least multiple if not all devices.
@MaximG1234 Try setting the Linker Behavior to "Link Framework SDKs only"
Hi @JohnHunterACS, Thanks just tried that with iPhone 6S and no difference, will try it with another device when I get a chance but doesn't appear to be related.
I'm surprised there aren't more people posting regarding this issue.
@rolfbjarne I can duplicate this with
dotnet new iosand VSfM. I usednet6.0-iossince it's LTS.I just put a breakpoint on the first line, start debugging on my iPhone 12 (iOS 16.2) and wait 20 seconds for the watchdog to kill the app.
Window = new UIWindow (UIScreen.MainScreen.Bounds);Has something changed in
mlaunchthat would make the OS not think the process is being debugged ? IIRC the watchdog was an issue solved a long time ago (monotouch era).Weirdly this crash does not get symbolicated for me neither... even if I had (sadly) no such issue with other projects :) OTOH I'm pretty sure it's just pointing to the current line of code (breakpoint) and debugger.
We solved the watchdog problem for the simulator, but never for device.
For device the process must be started with the native debugger (lldb/gdb-server) to keep the watchdog quiet, and that had other consequences (slower startup, mono's use of signals would confuse lldb/gdb-server and cause random crashes, etc.)
@rolfbjarne what changed between xamarin and net6+ that changed that behavior? Or is it iOS that changed?
@jeromelaban afaik it's never been possible to put a breakpoint in the FinishedLaunching method on device and not have watch dog trigger after 20s.
We solved the watchdog problem for the simulator, but never for device.
@rolfbjarne damn, I preferred the confort of my memories ;-) I guess I mixed up the sim fix and the fact we knew how (native debugger) it could be avoided.
The newly created application opens in more than 8 seconds, regardless of debug or release. My phone iphone 11 is a real device.
Is there a solution?
@ertandk please file a new issue with a test project, and we'll have a look. Each project is different, so without a test project we won't be able to say anything about your project in particular.
https://we.tl/t-BadrdHa5S7 the project is a .net 6.0 project created from scratch. (I also tried with 7.0, there was no change in speed.)
https://user-images.githubusercontent.com/22075526/217233620-479ffc70-5573-4682-bed7-fefb4739f6c0.mp4
android.webm android emulator and android is very fast on real device. But on ios real device, this situation is very slow.
@ertandk please file a new issue with a test project, and we'll have a look. Each project is different, so without a test project we won't be able to say anything about your project in particular.
@ertandk I have not had a chance yet to try this on another computer but I have already provided an example application where this issue is replicable in the above comment (https://github.com/dotnet/maui-samples). On my machine, the last time I checked I cannot debug any iOS application on a real device and it is clear (or at least likely IMO) these issues are related given the error messages I am receiving.
Obviously it is possible this is isolated to my machine and I will comment when I've had a chance to try on another (should be in the next week or so) but I have no reason to believe that this is specific to me given there are clearly other users who are experiencing the same (or very similar) issue, I have already tried multiple iOS devices with the same results.
@rolfbjarne Hello, were you able to review? What advice do you have regarding this situation? Because these times are too long for users.
@ertandk please provide a link to a GitHub repository as explained here: https://github.com/dotnet/maui/blob/main/.github/repro.md
@rolfbjarne https://github.com/ertandk/test1234 Hello, This is the project where I created android and ios videos. Runs were performed as Release, the main problem is that the splash screen takes up to 8 seconds on iOS iphone 11 real device. Thank you.
@ertandk that launches pretty much instantly for me when I tap on the app on the device. Are you launching using the IDE, or tapping on the app?
@ertandk that launches pretty much instantly for me when I tap on the app on the device. Are you launching using the IDE, or tapping on the app?
@rolfbjarne
I install the application on my real phone with Release by choosing Local Device with iOS.
I have to start it by clicking the application on the iOS phone.
On Android, there is no problem with the opening speed in the release state. Only iOS has this long wait. https://github.com/dotnet/maui/issues/11392#issuecomment-1420626805 like here.
@ertandk since I can't reproduce any slowdown, can you profile using Instruments (https://github.com/xamarin/xamarin-macios/wiki/Profiling-App-Launch), and attach the resulting profile here?