Re:Apple’s Use of AppKit, Mac Catalyst and SwiftUI in macOS
by skavi on Friday August 19, 2022 @05:44PM
(#32526333)
It’s depressing how few developers would even notice that performance degradation, let alone go back in and fix it.
Re:Apple’s Use of AppKit, Mac Catalyst and SwiftUI in macOS
by odshoifsdhfs on Saturday August 20, 2022 @07:13AM
(#32531109)
Did you find out what was causing it? I have developed 'heavier' (aka 50k lines of code) applications in SwiftUI on mac and it mostly sits idle (0-1% cpu based if it is doing some regular background stuff). Heck, I just created a quick Charts based app from an online example on Mac and stays at 0,0%.
Is it possible it is re-rendering the view hierarchy due to some data invalidation you haven't noticed?
Re:Apple’s Use of AppKit, Mac Catalyst and SwiftUI in macOS
by fingerlocks on Friday August 19, 2022 @07:24PM
(#32527317)
Was this with the debugger attached? Did you do any further profiling in instruments on a release scheme to determine the cause of the cpu usage? You should be able to narrow it down to the specific sys calls.
Re:Apple’s Use of AppKit, Mac Catalyst and SwiftUI in macOS
by interactivecode on Saturday August 20, 2022 @06:46PM
(#32535827)
Is this app open source? I would live to poke around and see the difference both in code and performance
Re:Apple’s Use of AppKit, Mac Catalyst and SwiftUI in macOS
by nikanj on Saturday August 20, 2022 @04:49AM
(#32530475)
”Premature optimization is evil” is dogma, but you can’t keyhole optimize the architecture after the fact.
Just like cars, you can’t build a Kia Soul, and then just replace a few parts to reach Ferrari-like performance.
Wrote basically the exact same thing 1 day later in Swift with AppKit and NO SwiftUI and it sits at 0% CPU usage with less code complexity. Maybe in a few years I will give SwiftUI another try.