How can I look for performance problems on macOS t...

# kotlin-native

[aleksey.tomin]

How can I look for performance problems on macOS target?
kotlin 1.4.10, ktor 1.4.1, coroutines 1.3.9-native-mt-2, serialization 1.0.0
I try to run some logic in different threads by

val ctx1 = newSingleThreadContext("run1")
launch(ctx1) {
    run1()
}
val ctx2 = newSingleThreadContext("run2")
launch(ctx2) {
    run2()
}

But I’ve found that different logics in different contexts can’t work in same time - when I turn off run2 feature - run1 works faster.

How can I run some code (with coroutines support) in another thread?

PS: run1 - ktor/curl client, run2 - file operations.

PPS: I’ll migrate to serialization 1.0.1 today but (I think) it doesn’t matter.

[aleksey.tomin]

Maybe it’s a memory-leak in my code. How can I look for this in native?

[ntherning]

You could try with the Leaks detector in Instruments which is included in Xcode. This will show if you are leaking ObjC/Swift objects. It also tracks general memory allocations (e.g. using malloc()) but I'm not sure it will show you Kotlin Native allocations as it might be using a custom allocator.