freebsd-dev/usr.bin/netstat/mbuf.c
Bosko Milekic a01db67988 Change the "in use" percentage metric to actually display a real
"in use" percentage. In other words, show how much of mb_map is in use.
2000-10-15 06:29:22 +00:00

203 lines
6.0 KiB
C

/*
* Copyright (c) 1983, 1988, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef lint
#if 0
static char sccsid[] = "@(#)mbuf.c 8.1 (Berkeley) 6/6/93";
#endif
static const char rcsid[] =
"$FreeBSD$";
#endif /* not lint */
#include <sys/param.h>
#include <sys/mbuf.h>
#include <sys/protosw.h>
#include <sys/socket.h>
#include <sys/sysctl.h>
#include <err.h>
#include <stdio.h>
#include <stdlib.h>
#include "netstat.h"
#define YES 1
typedef int bool;
struct mbstat mbstat;
static struct mbtypenames {
int mt_type;
char *mt_name;
} mbtypenames[] = {
{ MT_DATA, "data" },
{ MT_OOBDATA, "oob data" },
{ MT_CONTROL, "ancillary data" },
{ MT_HEADER, "packet headers" },
#ifdef MT_SOCKET
{ MT_SOCKET, "socket structures" }, /* XXX */
#endif
#ifdef MT_PCB
{ MT_PCB, "protocol control blocks" }, /* XXX */
#endif
#ifdef MT_RTABLE
{ MT_RTABLE, "routing table entries" }, /* XXX */
#endif
#ifdef MT_HTABLE
{ MT_HTABLE, "IMP host table entries" }, /* XXX */
#endif
#ifdef MT_ATABLE
{ MT_ATABLE, "address resolution tables" },
#endif
{ MT_FTABLE, "fragment reassembly queue headers" }, /* XXX */
{ MT_SONAME, "socket names and addresses" },
#ifdef MT_SOOPTS
{ MT_SOOPTS, "socket options" },
#endif
#ifdef MT_RIGHTS
{ MT_RIGHTS, "access rights" },
#endif
#ifdef MT_IFADDR
{ MT_IFADDR, "interface addresses" }, /* XXX */
#endif
{ 0, 0 }
};
/*
* Print mbuf statistics.
*/
void
mbpr()
{
u_long totmem, totpossible, totmbufs;
register int i;
struct mbtypenames *mp;
int name[3], nmbclusters, nmbufs, nmbcnt, nmbtypes;
size_t nmbclen, nmbuflen, nmbcntlen, mbstatlen, mbtypeslen;
u_long *mbtypes;
bool *seen; /* "have we seen this type yet?" */
mbtypes = NULL;
seen = NULL;
name[0] = CTL_KERN;
name[1] = KERN_IPC;
name[2] = KIPC_MBSTAT;
mbstatlen = sizeof mbstat;
if (sysctl(name, 3, &mbstat, &mbstatlen, 0, 0) < 0) {
warn("sysctl: retrieving mbstat");
goto err;
}
if (sysctlbyname("kern.ipc.mbtypes", NULL, &mbtypeslen, NULL, 0) < 0) {
warn("sysctl: retrieving mbtypes length");
goto err;
}
if ((mbtypes = malloc(mbtypeslen)) == NULL) {
warn("malloc: %lu bytes for mbtypes", (u_long)mbtypeslen);
goto err;
}
if (sysctlbyname("kern.ipc.mbtypes", mbtypes, &mbtypeslen, NULL,
0) < 0) {
warn("sysctl: retrieving mbtypes");
goto err;
}
nmbtypes = mbtypeslen / sizeof(*mbtypes);
if ((seen = calloc(nmbtypes, sizeof(*seen))) == NULL) {
warn("calloc");
goto err;
}
name[2] = KIPC_NMBCLUSTERS;
nmbclen = sizeof(int);
if (sysctl(name, 3, &nmbclusters, &nmbclen, 0, 0) < 0) {
warn("sysctl: retrieving nmbclusters");
goto err;
}
nmbuflen = sizeof(int);
if (sysctlbyname("kern.ipc.nmbufs", &nmbufs, &nmbuflen, 0, 0) < 0) {
warn("sysctl: retrieving nmbufs");
goto err;
}
nmbcntlen = sizeof(int);
if (sysctlbyname("kern.ipc.nmbcnt", &nmbcnt, &nmbcntlen, 0, 0) < 0) {
warn("sysctl: retrieving nmbcnt");
goto err;
}
#undef MSIZE
#define MSIZE (mbstat.m_msize)
#undef MCLBYTES
#define MCLBYTES (mbstat.m_mclbytes)
totmbufs = 0;
for (mp = mbtypenames; mp->mt_name; mp++)
totmbufs += mbtypes[mp->mt_type];
printf("%lu/%lu/%u mbufs in use (current/peak/max):\n", totmbufs,
mbstat.m_mbufs, nmbufs);
for (mp = mbtypenames; mp->mt_name; mp++)
if (mbtypes[mp->mt_type]) {
seen[mp->mt_type] = YES;
printf("\t%lu mbufs allocated to %s\n",
mbtypes[mp->mt_type], mp->mt_name);
}
seen[MT_FREE] = YES;
for (i = 0; i < nmbtypes; i++)
if (!seen[i] && mbtypes[i]) {
printf("\t%lu mbufs allocated to <mbuf type %d>\n",
mbtypes[i], i);
}
printf("%lu/%lu/%u mbuf clusters in use (current/peak/max)\n",
mbstat.m_clusters - mbstat.m_clfree, mbstat.m_clusters,
nmbclusters);
printf("%lu/%lu m_ext reference counters (in use/allocated)\n",
mbstat.m_refcnt - mbstat.m_refree, mbstat.m_refcnt);
totmem = mbstat.m_mbufs * MSIZE + mbstat.m_clusters * MCLBYTES +
mbstat.m_refcnt * sizeof(union mext_refcnt);
totpossible = nmbclusters * MCLBYTES + nmbufs * MSIZE +
nmbcnt * sizeof(union mext_refcnt);
printf("%lu Kbytes allocated to network (%lu%% of mb_map in use)\n",
totmem / 1024, (totmem * 100) / totpossible);
printf("%lu requests for memory denied\n", mbstat.m_drops);
printf("%lu requests for memory delayed\n", mbstat.m_wait);
printf("%lu calls to protocol drain routines\n", mbstat.m_drain);
err:
if (mbtypes != NULL)
free(mbtypes);
if (seen != NULL)
free(seen);
}