Hrms. Switched iocaine from jemalloc to mimalloc, because jemalloc is no longer maintained. Not quite impressed by the results at the moment. Memory use is up from ~90MiB to ~190MiB.
I'll keep it running for a few days to see how it fares in the longer run, but this isn't fine. I may go back to jemalloc, unmaintained or not, because this is a huge leap for no good reason. Might aswell use glibc's allocator.