[lugip] losing memory

[Thomas Pfau]

I have an Actiontec DSL modem that likes to hang after 6-8 hours of 
use.  I have been trying to debug what's causing this and think it might 
be running out of memory.  The device runs linux with busybox.  I can 
telnet to it and it has a few command line utilities so I can find out 
what's going on to some extent.

What I've seen while watching it today is that 'free' will report less 
free memory as time goes on.  The buffer count stays the same until free 
memory gets real low then the system takes buffers to get free RAM.  
 From the rate it was disappearing, I have a feeling that after 6-8 
hours, all of the memory is consumed and that's why it's hanging.

I can't figure out where the memory is going, though.  Vmsize reported 
by ps remains constant for all processes.

Does anyone have any ideas where else I could look to find out what's 
consuming all the RAM on this device?