4.4BSD/usr/src/usr.bin/nfsstat/nfsstat.c
/*
* Copyright (c) 1983, 1989, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Rick Macklem at The University of Guelph.
*
* 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
static char copyright[] =
"@(#) Copyright (c) 1983, 1989, 1993\n\
The Regents of the University of California. All rights reserved.\n";
#endif /* not lint */
#ifndef lint
static char sccsid[] = "@(#)nfsstat.c 8.1 (Berkeley) 6/6/93";
#endif /* not lint */
#include <sys/param.h>
#if BSD >= 199103
#define NEWVM
#endif
#ifndef NEWVM
#include <sys/vmmac.h>
#include <sys/ucred.h>
#include <machine/pte.h>
#endif
#include <sys/mount.h>
#include <nfs/nfsv2.h>
#include <nfs/nfs.h>
#include <signal.h>
#include <fcntl.h>
#include <ctype.h>
#include <errno.h>
#include <kvm.h>
#include <nlist.h>
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <paths.h>
struct nlist nl[] = {
#define N_NFSSTAT 0
{ "_nfsstats" },
"",
};
kvm_t *kd;
void intpr(), printhdr(), sidewaysintpr(), usage();
main(argc, argv)
int argc;
char **argv;
{
extern int optind;
extern char *optarg;
u_int interval;
int ch;
char *memf, *nlistf;
char errbuf[80];
interval = 0;
memf = nlistf = NULL;
while ((ch = getopt(argc, argv, "M:N:w:")) != EOF)
switch(ch) {
case 'M':
memf = optarg;
break;
case 'N':
nlistf = optarg;
break;
case 'w':
interval = atoi(optarg);
break;
case '?':
default:
usage();
}
argc -= optind;
argv += optind;
#define BACKWARD_COMPATIBILITY
#ifdef BACKWARD_COMPATIBILITY
if (*argv) {
interval = atoi(*argv);
if (*++argv) {
nlistf = *argv;
if (*++argv)
memf = *argv;
}
}
#endif
/*
* Discard setgid privileges if not the running kernel so that bad
* guys can't print interesting stuff from kernel memory.
*/
if (nlistf != NULL || memf != NULL)
setgid(getgid());
if ((kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, errbuf)) == 0) {
fprintf(stderr, "nfsstat: kvm_openfiles: %s\n", errbuf);
exit(1);
}
if (kvm_nlist(kd, nl) != 0) {
fprintf(stderr, "nfsstat: kvm_nlist: can't get names\n");
exit(1);
}
if (interval)
sidewaysintpr(interval, nl[N_NFSSTAT].n_value);
else
intpr(nl[N_NFSSTAT].n_value);
exit(0);
}
/*
* Print a description of the nfs stats.
*/
void
intpr(nfsstataddr)
u_long nfsstataddr;
{
struct nfsstats nfsstats;
if (kvm_read(kd, (u_long)nfsstataddr, (char *)&nfsstats, sizeof(struct nfsstats)) < 0) {
fprintf(stderr, "nfsstat: kvm_read failed\n");
exit(1);
}
printf("Client Info:\n");
printf("Rpc Counts:\n");
printf("%9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s\n",
"Getattr", "Setattr", "Lookup", "Readlink", "Read",
"Write", "Create", "Remove");
printf("%9d %9d %9d %9d %9d %9d %9d %9d\n",
nfsstats.rpccnt[NFSPROC_GETATTR],
nfsstats.rpccnt[NFSPROC_SETATTR],
nfsstats.rpccnt[NFSPROC_LOOKUP],
nfsstats.rpccnt[NFSPROC_READLINK],
nfsstats.rpccnt[NFSPROC_READ],
nfsstats.rpccnt[NFSPROC_WRITE],
nfsstats.rpccnt[NFSPROC_CREATE],
nfsstats.rpccnt[NFSPROC_REMOVE]);
printf("%9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s\n",
"Rename", "Link", "Symlink", "Mkdir", "Rmdir",
"Readdir", "Statfs", "RdirLook");
printf("%9d %9d %9d %9d %9d %9d %9d %9d\n",
nfsstats.rpccnt[NFSPROC_RENAME],
nfsstats.rpccnt[NFSPROC_LINK],
nfsstats.rpccnt[NFSPROC_SYMLINK],
nfsstats.rpccnt[NFSPROC_MKDIR],
nfsstats.rpccnt[NFSPROC_RMDIR],
nfsstats.rpccnt[NFSPROC_READDIR],
nfsstats.rpccnt[NFSPROC_STATFS],
nfsstats.rpccnt[NQNFSPROC_READDIRLOOK]);
printf("%9.9s %9.9s %9.9s\n",
"GLease", "Vacate", "Evict");
printf("%9d %9d %9d\n",
nfsstats.rpccnt[NQNFSPROC_GETLEASE],
nfsstats.rpccnt[NQNFSPROC_VACATED],
nfsstats.rpccnt[NQNFSPROC_EVICTED]);
printf("Rpc Info:\n");
printf("%9.9s %9.9s %9.9s %9.9s %9.9s\n",
"TimedOut", "Invalid", "X Replies", "Retries", "Requests");
printf("%9d %9d %9d %9d %9d\n",
nfsstats.rpctimeouts,
nfsstats.rpcinvalid,
nfsstats.rpcunexpected,
nfsstats.rpcretries,
nfsstats.rpcrequests);
printf("Cache Info:\n");
printf("%9.9s %9.9s %9.9s %9.9s",
"Attr Hits", "Misses", "Lkup Hits", "Misses");
printf(" %9.9s %9.9s %9.9s %9.9s\n",
"BioR Hits", "Misses", "BioW Hits", "Misses");
printf("%9d %9d %9d %9d",
nfsstats.attrcache_hits, nfsstats.attrcache_misses,
nfsstats.lookupcache_hits, nfsstats.lookupcache_misses);
printf(" %9d %9d %9d %9d\n",
nfsstats.biocache_reads-nfsstats.read_bios,
nfsstats.read_bios,
nfsstats.biocache_writes-nfsstats.write_bios,
nfsstats.write_bios);
printf("%9.9s %9.9s %9.9s %9.9s",
"BioRLHits", "Misses", "BioD Hits", "Misses");
printf(" %9.9s %9.9s\n", "DirE Hits", "Misses");
printf("%9d %9d %9d %9d",
nfsstats.biocache_readlinks-nfsstats.readlink_bios,
nfsstats.readlink_bios,
nfsstats.biocache_readdirs-nfsstats.readdir_bios,
nfsstats.readdir_bios);
printf(" %9d %9d\n",
nfsstats.direofcache_hits, nfsstats.direofcache_misses);
printf("\nServer Info:\n");
printf("%9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s\n",
"Getattr", "Setattr", "Lookup", "Readlink", "Read",
"Write", "Create", "Remove");
printf("%9d %9d %9d %9d %9d %9d %9d %9d\n",
nfsstats.srvrpccnt[NFSPROC_GETATTR],
nfsstats.srvrpccnt[NFSPROC_SETATTR],
nfsstats.srvrpccnt[NFSPROC_LOOKUP],
nfsstats.srvrpccnt[NFSPROC_READLINK],
nfsstats.srvrpccnt[NFSPROC_READ],
nfsstats.srvrpccnt[NFSPROC_WRITE],
nfsstats.srvrpccnt[NFSPROC_CREATE],
nfsstats.srvrpccnt[NFSPROC_REMOVE]);
printf("%9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s\n",
"Rename", "Link", "Symlink", "Mkdir", "Rmdir",
"Readdir", "Statfs", "RdirLook");
printf("%9d %9d %9d %9d %9d %9d %9d %9d\n",
nfsstats.srvrpccnt[NFSPROC_RENAME],
nfsstats.srvrpccnt[NFSPROC_LINK],
nfsstats.srvrpccnt[NFSPROC_SYMLINK],
nfsstats.srvrpccnt[NFSPROC_MKDIR],
nfsstats.srvrpccnt[NFSPROC_RMDIR],
nfsstats.srvrpccnt[NFSPROC_READDIR],
nfsstats.srvrpccnt[NFSPROC_STATFS],
nfsstats.srvrpccnt[NQNFSPROC_READDIRLOOK]);
printf("%9.9s %9.9s %9.9s\n",
"GLease", "Vacate", "Evict");
printf("%9d %9d %9d\n",
nfsstats.srvrpccnt[NQNFSPROC_GETLEASE],
nfsstats.srvrpccnt[NQNFSPROC_VACATED],
nfsstats.srvrpccnt[NQNFSPROC_EVICTED]);
printf("Server Ret-Failed\n");
printf("%17d\n", nfsstats.srvrpc_errs);
printf("Server Faults\n");
printf("%13d\n", nfsstats.srv_errs);
printf("Server Cache Stats:\n");
printf("%9.9s %9.9s %9.9s %9.9s\n",
"Inprog", "Idem", "Non-idem", "Misses");
printf("%9d %9d %9d %9d\n",
nfsstats.srvcache_inproghits,
nfsstats.srvcache_idemdonehits,
nfsstats.srvcache_nonidemdonehits,
nfsstats.srvcache_misses);
printf("Server Lease Stats:\n");
printf("%9.9s %9.9s %9.9s\n",
"Leases", "PeakL", "GLeases");
printf("%9d %9d %9d\n",
nfsstats.srvnqnfs_leases,
nfsstats.srvnqnfs_maxleases,
nfsstats.srvnqnfs_getleases);
}
u_char signalled; /* set if alarm goes off "early" */
/*
* Print a running summary of nfs statistics.
* Repeat display every interval seconds, showing statistics
* collected over that interval. Assumes that interval is non-zero.
* First line printed at top of screen is always cumulative.
*/
void
sidewaysintpr(interval, off)
u_int interval;
u_long off;
{
struct nfsstats nfsstats, lastst;
int hdrcnt, oldmask;
void catchalarm();
(void)signal(SIGALRM, catchalarm);
signalled = 0;
(void)alarm(interval);
bzero((caddr_t)&lastst, sizeof(lastst));
for (hdrcnt = 1;;) {
if (!--hdrcnt) {
printhdr();
hdrcnt = 20;
}
if (kvm_read(kd, off, (char *)&nfsstats, sizeof nfsstats) < 0) {
fprintf(stderr, "nfsstat: kvm_read failed\n");
exit(1);
}
printf("Client: %8d %8d %8d %8d %8d %8d %8d %8d\n",
nfsstats.rpccnt[1]-lastst.rpccnt[1],
nfsstats.rpccnt[4]-lastst.rpccnt[4],
nfsstats.rpccnt[5]-lastst.rpccnt[5],
nfsstats.rpccnt[6]-lastst.rpccnt[6],
nfsstats.rpccnt[8]-lastst.rpccnt[8],
nfsstats.rpccnt[11]-lastst.rpccnt[11],
nfsstats.rpccnt[12]-lastst.rpccnt[12],
nfsstats.rpccnt[16]-lastst.rpccnt[16]);
printf("Server: %8d %8d %8d %8d %8d %8d %8d %8d\n",
nfsstats.srvrpccnt[1]-lastst.srvrpccnt[1],
nfsstats.srvrpccnt[4]-lastst.srvrpccnt[4],
nfsstats.srvrpccnt[5]-lastst.srvrpccnt[5],
nfsstats.srvrpccnt[6]-lastst.srvrpccnt[6],
nfsstats.srvrpccnt[8]-lastst.srvrpccnt[8],
nfsstats.srvrpccnt[11]-lastst.srvrpccnt[11],
nfsstats.srvrpccnt[12]-lastst.srvrpccnt[12],
nfsstats.srvrpccnt[16]-lastst.srvrpccnt[16]);
lastst = nfsstats;
fflush(stdout);
oldmask = sigblock(sigmask(SIGALRM));
if (!signalled)
sigpause(0);
sigsetmask(oldmask);
signalled = 0;
(void)alarm(interval);
}
/*NOTREACHED*/
}
void
printhdr()
{
printf(" %8.8s %8.8s %8.8s %8.8s %8.8s %8.8s %8.8s %8.8s\n",
"Getattr", "Lookup", "Readlink", "Read", "Write", "Rename",
"Link", "Readdir");
fflush(stdout);
}
/*
* Called if an interval expires before sidewaysintpr has completed a loop.
* Sets a flag to not wait for the alarm.
*/
void
catchalarm()
{
signalled = 1;
}
void
usage()
{
(void)fprintf(stderr,
"usage: nfsstat [-M core] [-N system] [-w interval]\n");
exit(1);
}