[cplusplusfellow]

For all of the reasons you note above, this is why I've almost exclusively dealt with arena-style allocations of fixed-object-sizes when doing ultra low latency work.

[iainctduncan]

Hi, I'm just starting a (long) PhD in computer music languages, and one of my hoped-for projects is improving the GC for the Scheme implementation I work in for soft realtime use. If you (or anyone else) wouldn't mind sharing suggestion on resources for learning about low-latency modern GCs, it would be most appreciated. :-)

[pebal]

You can look at the SGCL garbage collector for C++: https://github.com/pebal/sgcl. It works in a separate thread, is locks-free and never stops the world.

[moonchild]

read the garbage collection handbook - https://gchandbook.org/