They actually allow up to 64 characters in the kernel: https://github.com/torvalds/linux/blob/8395ae05cb5a2e31d36106e8c85efa11cda849be/fs/proc/array.c#L100 http

They actually allow up to 64 characters in the kernel: https://github.com/torvalds/linux/blob/8395ae05cb5a2e31d36106e8c85efa11cda849be/fs/proc/array.c#L100 https://github.com/torvalds/linux/blob/8395ae05cb5a2e31d3610... This might just be for certain kernel things though. I don't see any regular processes that aren't truncated, but I see a bunch of kernel things that have more than 16 chars on my system.