kern/75277: netstat -m 'mbufs in use' output appears to be incorrect

[Kris Kennaway]

The following reply was made to PR kern/75277; it has been noted by GNATS.

From: Kris Kennaway <kris at obsecurity.org>
To: Justin Erenkrantz <justin at erenkrantz.com>
Cc: freebsd-gnats-submit at FreeBSD.org
Subject: Re: kern/75277: netstat -m 'mbufs in use' output appears to be incorrect
Date: Tue, 4 Jan 2005 16:58:51 -0800

 On Sun, Dec 19, 2004 at 08:03:15PM +0000, Justin Erenkrantz wrote:
 
 > The 'mbufs in use' parameter from 'netstat -m' appears from to be incorrect (or non-sensical).
 
 I believe this is a known issue on SMP systems.  Robert Watson posted
 a patch on the current@ mailing list around November in response to a
 similar report by Andrew Gallatin (synchronizing the mbuf counters has
 performance penalties though).  Can you confirm that if you use that
 patch the problem goes away?
 
 Kris