[CentOS] Why the huge shmmax default setting?

[Woodchuck]

On Tue, Dec 17, 2013 at 7:55 PM, John R Pierce <pierce at hogranch.com> wrote:
> On 12/17/2013 4:33 PM, Lists wrote:
>> This large value doesn't really make sense to me - can somebody explain
>> why the change to such a large value?
>
> its just a limit, it has no impact unless someone claims too much shared
> memory.
>
> the only place it makes sense to set it small is on a shared ssytem with
> potentially hostile users who might think its funny to allocate too much
> and cause a denial of service.... eg, Students.

Thank the gods there are so few networked systems these days!

Paco Marmotta