Jakob Botsch Nielsen

This looks like another occurrence of #68884. The test is disabled in GC stress, gets skipped, but the OutOfProcess execution mechanism seems to hang after that. cc @trylek, it seems...

I managed to get a repro by running `CoreclrTestWrapperLib.RunTest` in a loop with `COMPlus_GCStress=c` and `COMPlus_JitStress=2` on macOS arm64. Trying to track down now what the problem is.

@dotnet/area-system-diagnostics-process Can you please confirm that the following code looks correct: https://github.com/dotnet/runtime/blob/8d4a724883715cc5ae71e020b22762136f7ce50b/src/tests/Common/Coreclr.TestWrapper/CoreclrTestWrapperLib.cs#L306-L334 On macOS arm64 I am frequently hitting a hang on the `WaitForExit` call when I run this code...

If I change the copy tasks to: ```csharp Task copyOutput = Task.Run(async () => { try { Console.WriteLine($" [{index}] Starting CopyTo output"); await process.StandardOutput.BaseStream.CopyToAsync(outputStream, 4096, cts.Token); Console.WriteLine($" [{index}] Done with...

What I said above about the bash process still being alive is not totally right. The bash process shows up as `(bash)` in `ps`. From my googling, the parentheses seem...

What does it translate to in terms of memstats (define `MEASURE_MEM_ALLOC` in jit.h and enable `DOTNET_JitMemStats=1`) for libraries.pmi/crossgen2 collections?

I personally would not lose sleep over 0.1% TP and 2.6% more memory usage for jitting (that is recycled anyway) given how useful this is going to be for us....

> I've just tested - it's the same regardless of -jitoption JITMinOpts=1 (as I expected since memory layout doesn't depend on it) Did you not run into problems with missing...

> Maybe there are other pivots as well? PGO versus non-PGO, etc.? Yeah, I think we can find a lot of stuff. I have it on my quality week list...

> is it a normal fluctuation or not but still better than memory usage regression? I don't think it's noise, it probably is executing that many more instructions. However I...