On Tue, Jun 14, 2016 at 06:48:08PM -0400, Waiman Long wrote:

even the reduced maximum of about 16k (32-bit) or 1G (64-bit) should
be more than enough for the foreseeable future.

So what happens if I manage to create 16k+ threads on my 32bit kernel
and get them all to do mmap() or so at the same time.

That doesn't seem too far fetched.

Then again, with double that (the current limit) that doesn't seem
impossible either.