mbuf leak with SMP and debug.mpsafenet=1

[Robert Watson]

On Thu, 14 Oct 2004, Andrew Gallatin wrote:

> Log into another host and do:
> 
> % while 1
> while?  ssh  'netstat -m | grep mbufs'
> while?  netperf224 -Hscream -tUDP_STREAM -l60 -- -m 1 >& /dev/null
> while? end

I must have missed this e-mail previously, sorry about the slow response.
John Baldwin pointed me at it wondering why I hadn't answered, and that's
why :-).

Is the number of mbufs lost proportional to total run time since the
start, or number of runs since start?  I.e., if you shorten 60 seconds to
6 seconds but sample at the same rate, what impact does that have on the
measured leakage?

Robert N M Watson             FreeBSD Core Team, TrustedBSD Projects
robert at fledge.watson.org      Principal Research Scientist, McAfee Research