Date: Fri, 19 Nov 2004 15:21:44 -0500 From: Chris McDermott <chris.trismegistus@gmail.com> To: trorki@area51.capnet.state.tx.us Cc: freebsd-amd64@www.freebsd.org Subject: Re: Too many mbufs Message-ID: <bf8d7e4904111912214a86a151@mail.gmail.com> In-Reply-To: <20041119124946.J29849@area51.capnet.state.tx.us> References: <Pine.BSF.4.60.0411191757010.75856@mail.sbb.co.yu> <20041119124946.J29849@area51.capnet.state.tx.us>
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> Would you people please include at least a `uname -a`
> with these posts, even better state the motherboard
> you're running with. I am NOT seeing this with
> a Tyan s2882, dual 244, with 4GB memory, on 5.3-R #0.
I'm having the same problem, and it seems to be related to
kern.ipc.mbstat. I don't see kern.ipc.mbstat in the output of sysctl
-a. If I try and get the value with sysctlbyname() [copied from
netstat/mbuf.c], it returns negative values for mbstat->m_mbufs. This
negative value does fluctuate with network usage though...
Test code:
#include <sys/types.h>
#include <sys/param.h>
#include <sys/sysctl.h>
#include <sys/mbuf.h>
#include <stdio.h>
int main()
{
struct mbstat *mbstat;
size_t mlen;
mlen = sizeof *mbstat;
if( (mbstat = calloc(1,mlen)) == NULL)
perror("calloc");
if (sysctlbyname("kern.ipc.mbstat", mbstat, &mlen, NULL, 0) < 0)
perror("sysctl: retrieving mbstat");
printf("mbufs: %d \nclusters: %d\n", mbstat->m_mbufs, mbstat->m_mclusts);
return 0;
}
Output:
mbufs: -2240
clusters: -2686
System:
TYAN s2885 dual 242 512M ram 5.3-R
codefactory# uname -a
FreeBSD codefactory 5.3-RELEASE FreeBSD 5.3-RELEASE #7: Tue Nov 9
23:28:53 EST 2004
cmc@codefactory:/usr/src/sys/amd64/compile/CODEFACTORY amd64
codefactory# netstat -m
18446744073709549940 mbufs in use
18446744073709549630/17152 mbuf clusters in use (current/max)
0/0/0 sfbufs in use (current/peak/max)
18014398509477593 KBytes allocated to network
0 requests for sfbufs denied
0 requests for sfbufs delayed
0 requests for I/O initiated by sendfile
0 calls to protocol drain routines
Chris
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