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freebsd/usr.bin/nfsstat/nfsstat.c

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/*
* 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
#if 0
static char sccsid[] = "@(#)nfsstat.c 8.2 (Berkeley) 3/31/95";
#endif
static const char rcsid[] =
"$FreeBSD$";
#endif /* not lint */
#include <sys/param.h>
#include <sys/mount.h>
#include <sys/time.h>
#include <sys/sysctl.h>
#include <nfs/rpcv2.h>
#include <nfs/nfsproto.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>
#include <err.h>
struct nlist nl[] = {
#define N_NFSSTAT 0
{ "_nfsstats" },
"",
};
kvm_t *kd;
static int deadkernel = 0;
static int widemode = 0;
void intpr __P((int, int));
void printhdr __P((int, int));
void sidewaysintpr __P((u_int, int, int));
void usage __P((void));
char *sperc1 __P((int, int));
char *sperc2 __P((int, int));
#define DELTA(field) (nfsstats.field - lastst.field)
main(argc, argv)
int argc;
char **argv;
{
extern int optind;
extern char *optarg;
u_int interval;
int clientOnly = -1;
int serverOnly = -1;
int ch;
char *memf, *nlistf;
char errbuf[80];
interval = 0;
memf = nlistf = NULL;
while ((ch = getopt(argc, argv, "csWM:N:w:")) != -1)
switch(ch) {
case 'M':
memf = optarg;
break;
case 'N':
nlistf = optarg;
break;
case 'W':
widemode = 1;
break;
case 'w':
interval = atoi(optarg);
break;
case 'c':
clientOnly = 1;
if (serverOnly < 0)
serverOnly = 0;
break;
case 's':
serverOnly = 1;
if (clientOnly < 0)
clientOnly = 0;
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());
deadkernel = 1;
if ((kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY,
errbuf)) == 0) {
errx(1, "kvm_openfiles: %s", errbuf);
}
if (kvm_nlist(kd, nl) != 0) {
errx(1, "kvm_nlist: can't get names");
}
}
if (interval)
sidewaysintpr(interval, clientOnly, serverOnly);
else
intpr(clientOnly, serverOnly);
exit(0);
}
/*
* Read the nfs stats using sysctl(3) for live kernels, or kvm_read
* for dead ones.
*/
void
readstats(stp)
struct nfsstats *stp;
{
if(deadkernel) {
if(kvm_read(kd, (u_long)nl[N_NFSSTAT].n_value, stp,
sizeof *stp) < 0) {
err(1, "kvm_read");
}
} else {
int name[3];
size_t buflen = sizeof *stp;
struct vfsconf vfc;
if (getvfsbyname("nfs", &vfc) < 0)
err(1, "getvfsbyname: NFS not compiled into kernel");
name[0] = CTL_VFS;
name[1] = vfc.vfc_typenum;
name[2] = NFS_NFSSTATS;
if (sysctl(name, 3, stp, &buflen, (void *)0, (size_t)0) < 0) {
err(1, "sysctl");
}
}
}
/*
* Print a description of the nfs stats.
*/
void
intpr(int clientOnly, int serverOnly)
{
struct nfsstats nfsstats;
readstats(&nfsstats);
if (clientOnly) {
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", "RdirPlus", "Access");
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_READDIRPLUS],
nfsstats.rpccnt[NFSPROC_ACCESS]);
printf("%9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s\n",
"Mknod", "Fsstat", "Fsinfo", "PathConf", "Commit",
"GLease", "Vacate", "Evict");
printf("%9d %9d %9d %9d %9d %9d %9d %9d\n",
nfsstats.rpccnt[NFSPROC_MKNOD],
nfsstats.rpccnt[NFSPROC_FSSTAT],
nfsstats.rpccnt[NFSPROC_FSINFO],
nfsstats.rpccnt[NFSPROC_PATHCONF],
nfsstats.rpccnt[NFSPROC_COMMIT],
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);
}
if (serverOnly) {
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", "RdirPlus", "Access");
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_READDIRPLUS],
nfsstats.srvrpccnt[NFSPROC_ACCESS]);
printf("%9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s\n",
"Mknod", "Fsstat", "Fsinfo", "PathConf", "Commit",
"GLease", "Vacate", "Evict");
printf("%9d %9d %9d %9d %9d %9d %9d %9d\n",
nfsstats.srvrpccnt[NFSPROC_MKNOD],
nfsstats.srvrpccnt[NFSPROC_FSSTAT],
nfsstats.srvrpccnt[NFSPROC_FSINFO],
nfsstats.srvrpccnt[NFSPROC_PATHCONF],
nfsstats.srvrpccnt[NFSPROC_COMMIT],
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);
printf("Server Write Gathering:\n");
printf("%9.9s %9.9s %9.9s\n",
"WriteOps", "WriteRPC", "Opsaved");
printf("%9d %9d %9d\n",
nfsstats.srvvop_writes,
nfsstats.srvrpccnt[NFSPROC_WRITE],
nfsstats.srvrpccnt[NFSPROC_WRITE] -
nfsstats.srvvop_writes);
}
}
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(u_int interval, int clientOnly, int serverOnly)
{
struct nfsstats nfsstats, lastst;
int hdrcnt = 1;
readstats(&lastst);
sleep(interval);
for (;;) {
readstats(&nfsstats);
if (--hdrcnt == 0) {
printhdr(clientOnly, serverOnly);
if (clientOnly && serverOnly)
hdrcnt = 10;
else
hdrcnt = 20;
}
if (clientOnly) {
printf("%s %6d %6d %6d %6d %6d %6d %6d %6d",
((clientOnly && serverOnly) ? "Client:" : ""),
DELTA(attrcache_hits) + DELTA(attrcache_misses),
DELTA(lookupcache_hits) + DELTA(lookupcache_misses),
DELTA(biocache_readlinks),
DELTA(biocache_reads),
DELTA(biocache_writes),
nfsstats.rpccnt[NFSPROC_RENAME]-lastst.rpccnt[NFSPROC_RENAME],
DELTA(accesscache_hits) + DELTA(accesscache_misses),
DELTA(biocache_readdirs)
);
if (widemode) {
printf(" %s %s %s %s %s %s",
sperc1(DELTA(attrcache_hits),
DELTA(attrcache_misses)),
sperc1(DELTA(lookupcache_hits),
DELTA(lookupcache_misses)),
sperc2(DELTA(biocache_reads),
DELTA(read_bios)),
sperc2(DELTA(biocache_writes),
DELTA(write_bios)),
sperc1(DELTA(accesscache_hits),
DELTA(accesscache_misses)),
sperc2(DELTA(biocache_readdirs),
DELTA(readdir_bios))
);
}
printf("\n");
}
if (serverOnly) {
printf("%s %6d %6d %6d %6d %6d %6d %6d %6d",
((clientOnly && serverOnly) ? "Server:" : ""),
nfsstats.srvrpccnt[NFSPROC_GETATTR]-lastst.srvrpccnt[NFSPROC_GETATTR],
nfsstats.srvrpccnt[NFSPROC_LOOKUP]-lastst.srvrpccnt[NFSPROC_LOOKUP],
nfsstats.srvrpccnt[NFSPROC_READLINK]-lastst.srvrpccnt[NFSPROC_READLINK],
nfsstats.srvrpccnt[NFSPROC_READ]-lastst.srvrpccnt[NFSPROC_READ],
nfsstats.srvrpccnt[NFSPROC_WRITE]-lastst.srvrpccnt[NFSPROC_WRITE],
nfsstats.srvrpccnt[NFSPROC_RENAME]-lastst.srvrpccnt[NFSPROC_RENAME],
nfsstats.srvrpccnt[NFSPROC_ACCESS]-lastst.srvrpccnt[NFSPROC_ACCESS],
(nfsstats.srvrpccnt[NFSPROC_READDIR]-lastst.srvrpccnt[NFSPROC_READDIR])
+(nfsstats.srvrpccnt[NFSPROC_READDIRPLUS]-lastst.srvrpccnt[NFSPROC_READDIRPLUS]));
printf("\n");
}
lastst = nfsstats;
fflush(stdout);
sleep(interval);
}
/*NOTREACHED*/
}
void
printhdr(int clientOnly, int serverOnly)
{
printf("%s%6.6s %6.6s %6.6s %6.6s %6.6s %6.6s %6.6s %6.6s",
((serverOnly && clientOnly) ? " " : " "),
"GtAttr", "Lookup", "Rdlink", "Read", "Write", "Rename",
"Access", "Rddir");
if (widemode && clientOnly) {
printf(" Attr Lkup BioR BioW Accs BioD");
}
printf("\n");
fflush(stdout);
}
void
usage()
{
(void)fprintf(stderr,
"usage: nfsstat [-csW] [-M core] [-N system] [-w interval]\n");
exit(1);
}
static char SPBuf[64][8];
static int SPIndex;
char *
sperc1(int hits, int misses)
{
char *p = SPBuf[SPIndex];
if (hits + misses) {
sprintf(p, "%3d%%",
(int)(char)((quad_t)hits * 100 / (hits + misses)));
} else {
sprintf(p, " -");
}
SPIndex = (SPIndex + 1) & 63;
return(p);
}
char *
sperc2(int ttl, int misses)
{
char *p = SPBuf[SPIndex];
if (ttl) {
sprintf(p, "%3d%%",
(int)(char)((quad_t)(ttl - misses) * 100 / ttl));
} else {
sprintf(p, " -");
}
SPIndex = (SPIndex + 1) & 63;
return(p);
}
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