Re: "dst cache overflow"

["David S. Miller" <davem@xxxxxxxxxxxxx>]

On Tue, 21 Sep 2004 23:55:02 +0200
Harald Welte <laforge@xxxxxxxxxxxx> wrote:

> I bet that something inside the kernel forgets dst_release().. IMQ is
> just compiled, not used (so I don't see how it should come from this).
> 
> Any comments, suggestions?

Most likely it is a leak like that, yes.

Here is my suggstion for debugging this:

1) Boot with profile=2 or similar.
2) Disable the platform code that bumps the profiling
   counters at the timer interrupt.
3) Make every piece of which gets or puts a dst entry
   reference pass it's PC to some function which
   increments the profile buffer entry.  (use
   current_text_addr())

Then after running for some time use readprofile to figure
out what subsystem or area is causing the references.