Re: [RFC patch 1/2] sched: dynamically adapt granularity with nr_running

Steven Rostedt
2010-09-13T13:52:51Z

On Mon, 2010-09-13 at 10:41 +0200, Peter Zijlstra wrote:

> Yeah, without it you can starve the already running task on massive
> forks.
>
> Still, I'm not quite sure why people really care about fork() on time
> sensitive paths, its a very expensive thing to do, pre-fork() and wake
> when you need it, is what I would say.

Fork is used all over the place in Linux. Every shell script uses it to
execute commands. Bad fork behavior shows up in just doing a build of
the kernel.

-- Steve