> Other times something like changing some trivial subtle thing about the scheduler can make a badly written program perform much differently then it used to be

> Other times something like changing some trivial subtle thing about the scheduler can make a badly written program perform much differently then it used to be. Like changing the scheduler preferences of which process runs first on fork(), the parent or the child, exposed a bug in bash: https://yarchive.net/comp/linux/child-runs-first.html https://yarchive.net/comp/linux/child-runs-first.html