What the open file limit `ulimit -[H]n` does apply to?

user2742717

11/3/23, 9:20 AM

A set of systems is configured to 1024 limit. I'm running a set of programs (written by me) for which lsof -p <pid>|wc -l returns values no greater than 200-300 at any time. But sometimes they cause a core dump with errno=24 from glibc logger (too many open files). While increasing to 2048 ois possible solution. I'm curious how that can happen. They are launched from same bash script this way:

prog1 & prog2 & prog3

This script is executed from a service.

And a couple of them create nested processes. Does ulimit -n apply integrally to total of all subprocesses created within one shell environment?

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ulimit

Elon Musk

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