OpenBSD-4.6/usr.bin/nfsstat/nfsstat.c
/* $OpenBSD: nfsstat.c,v 1.32 2009/06/05 19:32:26 jasper Exp $ */
/* $NetBSD: nfsstat.c,v 1.7 1996/03/03 17:21:30 thorpej Exp $ */
/*
* 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. 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[] = "from: @(#)nfsstat.c 8.1 (Berkeley) 6/6/93";
static char *rcsid = "$NetBSD: nfsstat.c,v 1.7 1996/03/03 17:21:30 thorpej Exp $";
#else
static char *rcsid = "$OpenBSD: nfsstat.c,v 1.32 2009/06/05 19:32:26 jasper Exp $";
#endif
#endif /* not lint */
#include <sys/param.h>
#include <sys/mount.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 <limits.h>
#include <paths.h>
#include <err.h>
#define SHOW_SERVER 0x01
#define SHOW_CLIENT 0x02
#define SHOW_ALL (SHOW_SERVER | SHOW_CLIENT)
struct nlist nl[] = {
#define N_NFSSTAT 0
{ "_nfsstats" },
{ "" },
};
kvm_t *kd;
volatile sig_atomic_t signalled; /* set if alarm goes off "early" */
int nfs_id;
void getnfsstats(struct nfsstats *);
void printhdr(void);
void intpr(u_int);
void sidewaysintpr(u_int, u_int);
void usage(void);
void catchalarm(int);
int
main(int argc, char *argv[])
{
u_int interval, display = SHOW_ALL;
extern int optind;
extern char *optarg;
char *memf, *nlistf;
const char *errstr;
int ch;
interval = 0;
memf = nlistf = NULL;
while ((ch = getopt(argc, argv, "cM:N:sw:")) != -1)
switch(ch) {
case 'M':
memf = optarg;
break;
case 'N':
nlistf = optarg;
break;
case 'w':
interval = (u_int)strtonum(optarg, 0, 1000, &errstr);
if (errstr)
errx(1, "invalid interval %s: %s",
optarg, errstr);
break;
case 's':
display = SHOW_SERVER;
break;
case 'c':
display = SHOW_CLIENT;
break;
case '?':
default:
usage();
}
argc -= optind;
argv += optind;
#define BACKWARD_COMPATIBILITY
#ifdef BACKWARD_COMPATIBILITY
if (*argv) {
interval = (u_int)strtonum(*argv, 0, 1000, &errstr);
if (errstr)
errx(1, "invalid interval %s: %s", *argv, errstr);
if (*++argv) {
nlistf = *argv;
if (*++argv)
memf = *argv;
}
}
#endif
if (nlistf || memf) {
char errbuf[_POSIX2_LINE_MAX];
if ((kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, errbuf)) == 0)
errx(1, "nfsstat: %s", errbuf);
if (kvm_nlist(kd, nl) != 0)
errx(1, "kvm_nlist: can't get names");
} else {
int mib[4];
size_t len;
mib[0] = CTL_VFS;
mib[1] = VFS_GENERIC;
mib[2] = VFS_MAXTYPENUM;
len = sizeof(nfs_id);
if (sysctl(mib, 3, &nfs_id, &len, NULL, 0))
err(1, "sysctl: VFS_MAXTYPENUM");
for (; nfs_id; nfs_id--) {
struct vfsconf vfsc;
mib[0] = CTL_VFS;
mib[1] = VFS_GENERIC;
mib[2] = VFS_CONF;
mib[3] = nfs_id;
len = sizeof(vfsc);
if (sysctl(mib, 4, &vfsc, &len, NULL, 0))
continue;
if (!strcmp(vfsc.vfc_name, MOUNT_NFS))
break;
}
if (nfs_id == 0)
errx(1, "cannot find nfs filesystem id");
}
if (interval)
sidewaysintpr(interval, display);
else
intpr(display);
return 0;
}
void
getnfsstats(struct nfsstats *p)
{
if (kd) {
if (kvm_read(kd, nl[N_NFSSTAT].n_value, p, sizeof(*p)) != sizeof(*p))
errx(1, "kvm_read failed");
} else {
int mib[3];
size_t len = sizeof(*p);
mib[0] = CTL_VFS;
mib[1] = nfs_id; /* 2 */
mib[2] = NFS_NFSSTATS;
if (sysctl(mib, 3, p, &len, NULL, 0))
err(1, "sysctl");
}
}
/*
* Print a description of the nfs stats.
*/
void
intpr(u_int display)
{
struct nfsstats nfsstats;
getnfsstats(&nfsstats);
if (display & SHOW_CLIENT) {
printf("Client 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("%9llu %9llu %9llu %9llu %9llu %9llu %9llu %9llu\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("%9llu %9llu %9llu %9llu %9llu %9llu %9llu %9llu\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\n",
"Mknod", "Fsstat", "Fsinfo", "PathConf", "Commit");
printf("%9llu %9llu %9llu %9llu %9llu\n",
nfsstats.rpccnt[NFSPROC_MKNOD],
nfsstats.rpccnt[NFSPROC_FSSTAT],
nfsstats.rpccnt[NFSPROC_FSINFO],
nfsstats.rpccnt[NFSPROC_PATHCONF],
nfsstats.rpccnt[NFSPROC_COMMIT]);
printf("Rpc Info:\n");
printf("%9.9s %9.9s %9.9s %9.9s %9.9s %9.9s\n",
"TimedOut", "Invalid", "X Replies", "Retries", "Requests",
"FrcSync");
printf("%9llu %9llu %9llu %9llu %9llu %9llu\n",
nfsstats.rpctimeouts,
nfsstats.rpcinvalid,
nfsstats.rpcunexpected,
nfsstats.rpcretries,
nfsstats.rpcrequests,
nfsstats.forcedsync);
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("%9llu %9llu %9llu %9llu",
nfsstats.attrcache_hits, nfsstats.attrcache_misses,
nfsstats.lookupcache_hits, nfsstats.lookupcache_misses);
printf(" %9llu %9llu %9llu %9llu\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("%9llu %9llu %9llu %9llu",
nfsstats.biocache_readlinks-nfsstats.readlink_bios,
nfsstats.readlink_bios,
nfsstats.biocache_readdirs-nfsstats.readdir_bios,
nfsstats.readdir_bios);
printf(" %9llu %9llu\n",
nfsstats.direofcache_hits, nfsstats.direofcache_misses);
}
if (display == SHOW_ALL)
printf("\n");
if (display & SHOW_SERVER) {
printf("Server 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("%9llu %9llu %9llu %9llu %9llu %9llu %9llu %9llu\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("%9llu %9llu %9llu %9llu %9llu %9llu %9llu %9llu\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\n",
"Mknod", "Fsstat", "Fsinfo", "PathConf", "Commit");
printf("%9llu %9llu %9llu %9llu %9llu\n",
nfsstats.srvrpccnt[NFSPROC_MKNOD],
nfsstats.srvrpccnt[NFSPROC_FSSTAT],
nfsstats.srvrpccnt[NFSPROC_FSINFO],
nfsstats.srvrpccnt[NFSPROC_PATHCONF],
nfsstats.srvrpccnt[NFSPROC_COMMIT]);
printf("Server Ret-Failed\n");
printf("%17llu\n", nfsstats.srvrpc_errs);
printf("Server Faults\n");
printf("%13llu\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("%9llu %9llu %9llu %9llu\n",
nfsstats.srvcache_inproghits,
nfsstats.srvcache_idemdonehits,
nfsstats.srvcache_nonidemdonehits,
nfsstats.srvcache_misses);
printf("Server Write Gathering:\n");
printf("%9.9s %9.9s %9.9s\n",
"WriteOps", "WriteRPC", "Opsaved");
printf("%9llu %9llu %9llu\n",
nfsstats.srvvop_writes,
nfsstats.srvrpccnt[NFSPROC_WRITE],
nfsstats.srvrpccnt[NFSPROC_WRITE] - nfsstats.srvvop_writes);
}
}
/*
* 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, u_int display)
{
struct nfsstats nfsstats, lastst;
int hdrcnt;
sigset_t emptyset;
(void)signal(SIGALRM, catchalarm);
signalled = 0;
(void)alarm(interval);
bzero(&lastst, sizeof(lastst));
for (hdrcnt = 1;;) {
if (!--hdrcnt) {
printhdr();
hdrcnt = 20;
}
getnfsstats(&nfsstats);
if (display & SHOW_CLIENT)
printf("Client: "
"%8llu %8llu %8llu %8llu %8llu %8llu %8llu %8llu\n",
nfsstats.rpccnt[NFSPROC_GETATTR] -
lastst.rpccnt[NFSPROC_GETATTR],
nfsstats.rpccnt[NFSPROC_LOOKUP] -
lastst.rpccnt[NFSPROC_LOOKUP],
nfsstats.rpccnt[NFSPROC_READLINK] -
lastst.rpccnt[NFSPROC_READLINK],
nfsstats.rpccnt[NFSPROC_READ] -
lastst.rpccnt[NFSPROC_READ],
nfsstats.rpccnt[NFSPROC_WRITE] -
lastst.rpccnt[NFSPROC_WRITE],
nfsstats.rpccnt[NFSPROC_RENAME] -
lastst.rpccnt[NFSPROC_RENAME],
nfsstats.rpccnt[NFSPROC_ACCESS] -
lastst.rpccnt[NFSPROC_ACCESS],
(nfsstats.rpccnt[NFSPROC_READDIR] -
lastst.rpccnt[NFSPROC_READDIR]) +
(nfsstats.rpccnt[NFSPROC_READDIRPLUS] -
lastst.rpccnt[NFSPROC_READDIRPLUS]));
if (display & SHOW_SERVER)
printf("Server: "
"%8llu %8llu %8llu %8llu %8llu %8llu %8llu %8llu\n",
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]));
lastst = nfsstats;
fflush(stdout);
sigemptyset(&emptyset);
if (!signalled)
sigsuspend(&emptyset);
signalled = 0;
(void)alarm(interval);
}
/*NOTREACHED*/
}
void
printhdr(void)
{
printf(" %8.8s %8.8s %8.8s %8.8s %8.8s %8.8s %8.8s %8.8s\n",
"Getattr", "Lookup", "Readlink", "Read", "Write", "Rename",
"Access", "Readdir");
fflush(stdout);
}
/*
* Called if an interval expires before sidewaysintpr has completed a loop.
* Sets a flag to not wait for the alarm.
*/
/* ARGSUSED */
void
catchalarm(int signo)
{
signalled = 1;
}
void
usage(void)
{
extern char *__progname;
fprintf(stderr, "usage: %s [-cs] [-M core] [-N system] [-w wait]\n",
__progname);
exit(1);
}