Just wait if your underlying system RAM becomes problematic.
With some luck, your memory detection program on Amiga will respond before your host operating system freezes.
Serious answer:
Your question is pointless from the very beginning. Use host features to detect memory errors. memtest86, etc.
Even if Toni would implement it, it would not show real best tool, but only the one which is best at Toni's implementation. It doesn't mean real hardware RAM errors yield the same result.