> maybe increasing the value of kern.mbuf.nmbclusters with sysctl -w might
> fix the problem.  Or you might want to recompile your kernel with a higher
> value for NMBCLUSTERS.

i have 256 NMBCLUSTERS. isn't it enough?
 
> On Sun, Jun 24, 2001 at 01:15:58PM -0400, Kevin P. Neal wrote:
> > On Sat, Jun 23, 2001 at 08:30:59PM -0400, Brad Spencer wrote:
> > > One potential reason for this is an overloaded ppp link.  This plagued me
> > > when a 28.8 async. ppp link was my only connection to the Net.
> > > 
> > > What I think occurs is that there is so much backed up traffic waiting to
> > > go out the pipe that the system runs out of space.  This effects UDP and
> > > ICMP traffic the most.
> > 
> > Which is totally unacceptable. 
> > 
> > It seems unreasonable for the link to become so backed up that nothing
> > can ever be sent out of it again (until it is bounced). 
> > 
> > Why can't it drop data with 'no buffer space' errors while it tries to
> > send what it does currently have in buffers?
> > -- 
> > "A method for inducing cats to exercise consists of directing a beam of
> > invisible light produced by a hand-held laser apparatus onto the floor ...
> > in the vicinity of the cat, then moving the laser ... in an irregular way
> > fascinating to cats,..." -- US patent 5443036, "Method of exercising a cat"
>