[net5] dotnet test output total time elapsed in all threads

[nohwnd]

originaly posted by @dtopuzov in dotnet/sdk#13892

Output of test run with 5.0.100-rc.1.20452.10:

Passed!  - Failed:     0, Passed:   433, Skipped:     5, Total:   438, Duration: 9 m 44 s - Blazor.Playground.Tests.dll (net5.0)

Those 9 m 44 s are the total time of all threads, actually, tests were executed in ~3min.

dotnet sdk 3.1.401 shows the real elapsed time (not the sum of all treads).
I prefer the old behavior.

AB#1272733

[stephentoub]

dotnet sdk 3.1.401 shows the real elapsed time (not the sum of all treads).
I prefer the old behavior.

+1. If we want to show the total execution time summing each thread in addition to the wall clock time, great, but it shouldn't replace it.