I wrote Spall, one of the lightweight profilers mentioned in the post. I loved the author's blogpost on implicit in-order forests, it was neat to see someone else's take on trees for big traces, pushed me to go way bigger than I was originally planning!

Thankfully, eytzinger-ordered 4-ary trees work totally fine at 165+ fps, even at 3+ billion functions, but I like to read back through that post once in a while just in case I hit that perf wall someday.

Working on timestamp delta-compression at the moment to pack events into much smaller spaces, and hopefully get to 10 billion in 128 GB RAM sometime soon (at least for native builds of Spall).

Thanks for the kick to keep on pushing!