The "Out of mbuf clusters" problem

[chrisj at rtems.org (Chris Johns)]

Phil Torre wrote:
> 
> With the default mbuf and mbuf cluster allocations, and the MPC860's
> caches turned off, it looks like the receive daemon can grab all of
> the available mbuf clusters before the network task has a chance to
> process any of them, resulting in deadlock.
> 

If I assume your receiver cannot keep up so it will need to drop data.

What queue limits do you have for the receive queue ?

My understanding is MBUF queues have a limit count and MBUFs will not be 
queued if the queue is full.

So why not tune the receiver's queue to drop the packet if full.

-- 
  Chris Johns