I would just like to share some knowledge about profiling an exe using Visual Studio, since many might already have that installed.

After you have built your executable with symbols, open VS and choose "Continue without code".

Then just choose open Project/Solution (Ctrl+Shift+O) and go to "Debug -> Performance Profiler" (Alt+F2).

You will be presented with a windows looking something like this

Press start and wait for the profiling to complete.

You should now have a diagsession available to inspect.

The default view is the call tree:

You can also view by module, caller/callee, functions and flame graph.

This is an example of flame graph:

And here's an example showing that you can go into phobos as well:

Just sharing this here if someone with VS wants an easy way to profile with existing tools.

On Sunday, 22 October 2023 at 13:13:55 UTC, Imperatorn wrote:

On Sunday, 22 October 2023 at 13:13:55 UTC, Imperatorn wrote:

Just a clarification.

"open Project/Solution (Ctrl+Shift+O)" means, you open the executable in that file dialog :)

On Sunday, 22 October 2023 at 13:16:11 UTC, Imperatorn wrote:

You can also use Intel® VTune which integrates with Visual Studio as well, however, it naturally requires you to download and install it.

When installed, you can navigate to here after doing the process as described for VS.

If you do, you can get something similar to this:

This can be used to see if you can for example rewrite some code to complexity.

For example form O(N^2) to O(T * N) or perhaps O(N log N).

It can be a really useful tool