misc/47018: various rlimits are small for modern machines

[Taylor R Campbell <campbell+netbsd%mumble.net@localhost>]

>Number:         47018
>Category:       misc
>Synopsis:       various rlimits are small for modern machines
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    misc-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sun Sep 30 00:05:00 +0000 2012
>Originator:     Taylor R Campbell <campbell+netbsd%mumble.net@localhost>
>Release:        NetBSD 6.99.4
>Organization:
>Environment:
Architecture: i386
Machine: i386
>Description:

        Various rlimits are set to very small values by default, such
        as maxproc=128, descriptors=128, and datasize=256M; or at
        least, I see these defaults on my 2-core i386 with 2 GB RAM and
        my 12-core amd64 with 32 GB RAM -- I'm not sure exactly where
        they're set.  It would be nice if these scaled with the
        available RAM or something.

>How-To-Repeat:

        Try `build.sh -j12 distribution' on a machine with 12 cores and
        32 GB RAM.  Watch it fail on vfork when enough subprocesses
        have been started.

>Fix:

        Yes, please!