NSCoreDataCoreSpotlightDelegate Thread Performance Checker issue on iOS 17
Originator: | basti.kusserow | ||
Number: | rdar://FB13735049 | Date Originated: | 17.04.2024 |
Status: | Open | Resolved: | |
Product: | Core Data | Product Version: | |
Classification: | Reproducible: | Yes |
Summary: When I run the code from the Apple sample project `Showcase App Data in Spotlight` and add a new photo from my simulator to the app, the thread performance checker reports an issue about `Thread running at User-initiated quality-of-service class waiting on a lower QoS thread running at Background quality-of-service class. Investigate ways to avoid priority inversions`. Steps to Reproduce: run the app and add an image to the app. (On my real device, the issue even occurred without adding an image). Expected Result: I would expect that no thread checker issue is reported. Actual Results: The Thread Performance Checker reports: ``` Thread Performance Checker: Thread running at User-interactive quality-of-service class waiting on a lower QoS thread running at Utility quality-of-service class. Investigate ways to avoid priority inversions PID: 29446, TID: 9027318 Backtrace ================================================================= 3 CoreData 0x00000001981ac6e4 8489D8B2-FD76-35AE-B476-45AFD3CBB54C + 87780 4 CoreData 0x00000001981ab898 8489D8B2-FD76-35AE-B476-45AFD3CBB54C + 84120 5 CoreData 0x00000001981ab82c 8489D8B2-FD76-35AE-B476-45AFD3CBB54C + 84012 6 CoreData 0x00000001981ab630 8489D8B2-FD76-35AE-B476-45AFD3CBB54C + 83504 7 CoreData 0x00000001981ec604 8489D8B2-FD76-35AE-B476-45AFD3CBB54C + 349700 8 CoreData 0x00000001981ec374 8489D8B2-FD76-35AE-B476-45AFD3CBB54C + 349044 9 CoreData 0x000000019819d624 8489D8B2-FD76-35AE-B476-45AFD3CBB54C + 26148 10 CoreData 0x00000001982a18d8 8489D8B2-FD76-35AE-B476-45AFD3CBB54C + 1091800 11 CoreData 0x00000001981b7838 8489D8B2-FD76-35AE-B476-45AFD3CBB54C + 133176 12 libdispatch.dylib 0x00000001035e67bc _dispatch_client_callout + 20 13 libdispatch.dylib 0x00000001035f7e24 _dispatch_lane_barrier_sync_invoke_and_complete + 176 14 CoreData 0x00000001981b7744 8489D8B2-FD76-35AE-B476-45AFD3CBB54C + 132932 15 CoreData 0x00000001982a1504 8489D8B2-FD76-35AE-B476-45AFD3CBB54C + 1090820 16 CoreData 0x00000001981b7838 8489D8B2-FD76-35AE-B476-45AFD3CBB54C + 133176 17 CoreData 0x00000001981b770c 8489D8B2-FD76-35AE-B476-45AFD3CBB54C + 132876 18 CoreData 0x00000001982a10d0 8489D8B2-FD76-35AE-B476-45AFD3CBB54C + 1089744 19 CoreData 0x0000000198216fb8 8489D8B2-FD76-35AE-B476-45AFD3CBB54C + 524216 20 CoreData 0x0000000198216c94 8489D8B2-FD76-35AE-B476-45AFD3CBB54C + 523412 21 CoreData 0x00000001981b7838 8489D8B2-FD76-35AE-B476-45AFD3CBB54C + 133176 22 libdispatch.dylib 0x00000001035e67bc _dispatch_client_callout + 20 23 libdispatch.dylib 0x00000001035ee66c _dispatch_lane_serial_drain + 832 24 libdispatch.dylib 0x00000001035ef408 _dispatch_lane_invoke + 408 25 libdispatch.dylib 0x00000001035fc404 _dispatch_root_queue_drain_deferred_wlh + 328 26 libdispatch.dylib 0x00000001035fba38 _dispatch_workloop_worker_thread + 444 27 libsystem_pthread.dylib 0x00000001eccc3f2c _pthread_wqthread + 288 28 libsystem_pthread.dylib 0x00000001eccc3fcc start_wqthread + 8 ``` Tested on swift versions 5.10, 5.9 and 5.8 on iOS Versions 17.0.1, 17.2 and 17.4 in Xcode 15.3, not fixed Issue did not occur on iOS 16.4
Comments
Please note: Reports posted here will not necessarily be seen by Apple. All problems should be submitted at bugreport.apple.com before they are posted here. Please only post information for Radars that you have filed yourself, and please do not include Apple confidential information in your posts. Thank you!