Performance improvement

[gjaegy]

You'll definitively hate me :)

Anyway, while running the current version of our software with Memtrace, I got something like 1 frame every 10 seconds, meaning running our test scenario tooks hours.

Looking at task manager, MemTraceTool.exe was using 100% of a core while our application was simply waiting for Memtrace to become responsive.

Profiling Memtrace easily detected the culprit: about 99% of the CPU time was spent in List::Contains(), which is called in TraceTranscoder.cs line 534.

Adding a complimentary HashSet to perform this operation in a non-linear time made a huge difference (our application is running at half of its normal speed now, which is more than acceptable).

I'm not very good with pull requests, I thought you would be easily able to find the two little changes using WinMerge on your side. Attached the updated TraceTrancoder.cs file renamed as .txt (.cs files can't be attached).

TraceTranscoder.txt

I would be really glad if you could check and merge that change in the main branch, it makes MemTrace simply usable again for us !

Thanks a lot :)