You're right about the slowness! I just noticed it now. I'm confused why though -- I don't actually see it spawning a lot of processes, and the slowness is far

You're right about the slowness! I just noticed it now. I'm confused why though -- I don't actually see it spawning a lot of processes, and the slowness is far beyond what could be explained by that. Even a single process call appears to run much more slowly. I haven't dug into it but maybe the I/O pattern is funny?