Date: Thu, 3 Mar 2005 01:20:17 GMT From: Kris Kennaway <kris@obsecurity.org> To: freebsd-bugs@FreeBSD.org Subject: Re: kern/75277: netstat -m 'mbufs in use' output appears to be incorrect Message-ID: <200503030120.j231KHXh053786@freefall.freebsd.org>
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The following reply was made to PR kern/75277; it has been noted by GNATS. From: Kris Kennaway <kris@obsecurity.org> To: Martin Matuska <matuska@firma.zoznam.sk> Cc: freebsd-gnats-submit@FreeBSD.org Subject: Re: kern/75277: netstat -m 'mbufs in use' output appears to be incorrect Date: Wed, 2 Mar 2005 17:15:03 -0800 On Wed, Mar 02, 2005 at 04:40:24PM +0000, Martin Matuska wrote: > The following reply was made to PR kern/75277; it has been noted by GNATS. > > From: Martin Matuska <matuska@firma.zoznam.sk> > To: freebsd-gnats-submit@FreeBSD.org > Cc: > Subject: Re: kern/75277: netstat -m 'mbufs in use' output appears to be incorrect > Date: Wed, 02 Mar 2005 17:38:31 +0100 > > We encounter the same problem on latest 5-STABLE, on Sun Fire V65x (dual Xeon SMP machine w 4G of RAM) > > This system is under moderate network load - an average about 2000 tcp connections, ~350 permanent running processes > > FreeBSD 5.4-PRERELEASE i386, kernel built from sources: Sat Feb 26 18:19:57 CET 2005 > > # netstat -m > 4294886151 mbufs in use > 4294959052/25600 mbuf clusters in use (current/max) > 0/3/6656 sfbufs in use (current/peak/max) > 4157529 KBytes allocated to network > 0 requests for sfbufs denied > 0 requests for sfbufs delayed > 0 requests for I/O initiated by sendfile > 2 calls to protocol drain routines This is documented in the release errata. The stats are incorrect on SMP, and making them correct would impose a performance penalty. Kris
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