On Tue, Aug 17, 2010 at 02:37:09PM -0400, Eric Paris wrote:
> > ideally, when an application that cares about this is installed, it could
> > increase it via sysctl.conf
> > That default isn't a one size fits all. Regardless of what we set it to,
> > someone is going to want it smaller/bigger.
>
> I think we want to be very careful how much we suggest $random-package
> muck with sysctl. Ubuntu got a black eye since wine automatically
> changed mmap_min_addr if it was installed. It's not always clear what
> the implications of a change include. How many people on this list (the
> kernel list) would have guessed that the suggestion here would allow
> 5-10 users completely DoS a 32 machine?
>
> Rex, if you do decide to change it in sysctl lets try to keep it within
> a factor of 10 or so? You might want to ask the upstream kernel
> community what they think.
It's unfortunate that we have no way to determine at install time
"this is going to be a multiuser machine"
There are probably a bunch of other changes that a standalone desktop machine
could make knowing that.
Dave
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