svn commit: r277651 - head/sys/vm

[Garrett Cooper]

> On Janc 24, 2015, at 09:32, Will Andrews <will at FreeBSD.org> wrote:
> 
> Author: will
> Date: Sat Jan 24 17:32:45 2015
> New Revision: 277651
> URL: https://svnweb.freebsd.org/changeset/base/277651
> 
> Log:
>  Add vm.panic_on_oom sysctl, which enables those who would rather panic than
>  kill a process, when the system runs out of memory.  Defaults to off.
> 
>  Usually, this is most useful when the OOM condition is due to mismanagement
>  of memory, on a system where the applications in question don't respond well
>  to being killed.
> 
>  In theory, if the system is properly managed, it shouldn't be possible to
>  hit this condition. If it does, the panic can be more desirable for some
>  users (since it can be a good means of finding the root cause) rather than
>  killing the largest process and continuing on its merry way.
> 
>  As kib@ mentions in the differential, there is also protect(1), which uses
>  procctl(PROC_SPROTECT) to ensure that some processes are immune.  However,
>  a panic approach is still useful in some environments.  This is primarily
>  intended as a development/debugging tool.

Hi Will!
    Could you please add a kernel option to set the default from 0 to 1, or provide a tunable so the value could be set in loader.conf?
Thanks!