Re: Default size limits for /run (/var/run) and /run/lock (/var/lock)
On 2011-04-13, David Goodenough <email@example.com> wrote:
> I am surprised at this. I have several boxes which are small single board
> computers with solid state disks (MIDE or CF), so as I did not need swap
> space (the running set is fixed and the memory requirement was within
> the total available memory, I did not define any swap space. A few days
> ago I needed to move one of the boxes I noted its uptime at 594 days just
> before I switched it off. I grant you that it has 256MB of memory, and
> 120MB is currently free, but I have not noticed any problems growing over
> the time it was up. Maybe it just did not need to make any large physically
> contiguous allocations.
Given that Linux does paging, you normally don't need large physically
contiguous allocations. I think the exceptions are mainly I/O regions for
DMA. And you're probably not using that heavily on such a machine.