BeagleBone swap problems

[Ian Lepore]

On Sun, 2012-12-30 at 21:09 -0500, Brett Wynkoop wrote:
> Greeting-
> 
> It looks like something in head is giving swapping a problem.  I am
> swapping on a file /usr/swap/0 since the system runs out of memory
> trying to build the kernel.
> 
> This happened trying to rebuild the kernel.
> 
> swap_pager: indefinite wait buffer: bufobj: 0, blkno: 17323, size: 4096
> swap_pager: indefinite wait buffer: bufobj: 0, blkno: 19458, size: 8192
> swap_pager: indefinite wait buffer: bufobj: 0, blkno: 2397, size: 4096
> swap_pager: indefinite wait buffer: bufobj: 0, blkno: 28667, size: 8192
> swap_pager: indefinite wait buffer: bufobj: 0, blkno: 17323, size: 4096
> swap_pager: indefinite wait buffer: bufobj: 0, blkno: 19458, size: 8192
> swap_pager: indefinite wait buffer: bufobj: 0, blkno: 2397, size: 4096
> swap_pager: indefinite wait buffer: bufobj: 0, blkno: 28667, size: 8192
> swap_pager: indefinite wait buffer: bufobj: 0, blkno: 17323, size: 4096
> swap_pager: indefinite wait buffer: bufobj: 0, blkno: 19458, size: 8192
> swap_pager: indefinite wait buffer: bufobj: 0, blkno: 2397, size: 4096
> swap_pager: indefinite wait buffer: bufobj: 0, blkno: 28667, size: 8192
> swap_pager: indefinite wait buffer: bufobj: 0, blkno: 17323, size: 4096
> swap_pager: indefinite wait buffer: bufobj: 0, blkno: 19458, size: 8192
> swap_pager: indefinite wait buffer: bufobj: 0, blkno: 2397, size: 4096
> swap_pager: indefinite wait buffer: bufobj: 0, blkno: 28667, size: 8192
> swap_pager: indefinite wait buffer: bufobj: 0, blkno: 23547, size: 4096
> swap_pager: indefinite wait buffer: bufobj: 0, blkno: 23547, size: 4096
> swap_pager: indefinite wait buffer: bufobj: 0, blkno: 23547, size: 4096
> 
> The system is non-responsive and I guess I will have to drop to the
> debugger and reset.

You shouldn't run out of memory building a kernel on a board with 256mb.
Did you define MALLOC_PRODUCTION in make.conf when you built world?  If
not, then all your binaries are using way more memory than they need to.

-- Ian