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379 lines
11 KiB
C
379 lines
11 KiB
C
/*
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* Copyright (c) 1983, 1989, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Rick Macklem at The University of Guelph.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef lint
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static char copyright[] =
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"@(#) Copyright (c) 1983, 1989, 1993\n\
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The Regents of the University of California. All rights reserved.\n";
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#endif /* not lint */
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#ifndef lint
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/*static char sccsid[] = "From: @(#)nfsstat.c 8.1 (Berkeley) 6/6/93";*/
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static const char rcsid[] =
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"$Id$";
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#endif /* not lint */
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#include <sys/param.h>
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#include <sys/mount.h>
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#include <sys/sysctl.h>
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#include <nfs/nfsv2.h>
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#include <nfs/nfs.h>
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#include <signal.h>
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#include <fcntl.h>
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#include <ctype.h>
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#include <errno.h>
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#include <kvm.h>
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#include <nlist.h>
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#include <unistd.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <paths.h>
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#include <err.h>
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struct nlist nl[] = {
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#define N_NFSSTAT 0
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{ "_nfsstats" },
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"",
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};
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kvm_t *kd;
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static int deadkernel = 0;
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void intpr(void), printhdr(void), sidewaysintpr(u_int), usage(void);
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main(argc, argv)
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int argc;
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char **argv;
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{
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extern int optind;
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extern char *optarg;
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u_int interval;
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int ch;
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char *memf, *nlistf;
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char errbuf[80];
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interval = 0;
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memf = nlistf = NULL;
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while ((ch = getopt(argc, argv, "M:N:w:")) != EOF)
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switch(ch) {
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case 'M':
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memf = optarg;
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break;
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case 'N':
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nlistf = optarg;
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break;
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case 'w':
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interval = atoi(optarg);
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break;
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case '?':
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default:
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usage();
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}
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argc -= optind;
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argv += optind;
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#define BACKWARD_COMPATIBILITY
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#ifdef BACKWARD_COMPATIBILITY
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if (*argv) {
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interval = atoi(*argv);
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if (*++argv) {
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nlistf = *argv;
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if (*++argv)
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memf = *argv;
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}
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}
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#endif
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/*
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* Discard setgid privileges if not the running kernel so that bad
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* guys can't print interesting stuff from kernel memory.
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*/
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if (nlistf != NULL || memf != NULL) {
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setgid(getgid());
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deadkernel = 1;
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if ((kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY,
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errbuf)) == 0) {
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errx(1, "kvm_openfiles: %s", errbuf);
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}
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if (kvm_nlist(kd, nl) != 0) {
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errx(1, "kvm_nlist: can't get names");
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}
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}
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if (interval)
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sidewaysintpr(interval);
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else
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intpr();
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exit(0);
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}
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/*
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* Read the nfs stats using sysctl(3) for live kernels, or kvm_read
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* for dead ones.
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*/
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void
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readstats(struct nfsstats *stp)
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{
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if(deadkernel) {
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if(kvm_read(kd, (u_long)nl[N_NFSSTAT].n_value, stp,
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sizeof *stp) < 0) {
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err(1, "kvm_read");
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}
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} else {
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int name[3];
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size_t buflen = sizeof *stp;
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name[0] = CTL_FS;
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name[1] = MOUNT_NFS;
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name[2] = NFS_NFSSTATS;
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if(sysctl(name, 3, stp, &buflen, (void *)0, (size_t)0) < 0) {
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err(1, "sysctl");
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}
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}
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}
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/*
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* Print a description of the nfs stats.
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*/
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void
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intpr(void)
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{
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struct nfsstats nfsstats;
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readstats(&nfsstats);
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printf("Client Info:\n");
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printf("Rpc Counts:\n");
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printf("%9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s\n",
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"Getattr", "Setattr", "Lookup", "Readlink", "Read",
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"Write", "Create", "Remove");
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printf("%9d %9d %9d %9d %9d %9d %9d %9d\n",
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nfsstats.rpccnt[NFSPROC_GETATTR],
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nfsstats.rpccnt[NFSPROC_SETATTR],
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nfsstats.rpccnt[NFSPROC_LOOKUP],
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nfsstats.rpccnt[NFSPROC_READLINK],
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nfsstats.rpccnt[NFSPROC_READ],
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nfsstats.rpccnt[NFSPROC_WRITE],
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nfsstats.rpccnt[NFSPROC_CREATE],
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nfsstats.rpccnt[NFSPROC_REMOVE]);
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printf("%9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s\n",
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"Rename", "Link", "Symlink", "Mkdir", "Rmdir",
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"Readdir", "Statfs", "RdirLook");
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printf("%9d %9d %9d %9d %9d %9d %9d %9d\n",
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nfsstats.rpccnt[NFSPROC_RENAME],
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nfsstats.rpccnt[NFSPROC_LINK],
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nfsstats.rpccnt[NFSPROC_SYMLINK],
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nfsstats.rpccnt[NFSPROC_MKDIR],
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nfsstats.rpccnt[NFSPROC_RMDIR],
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nfsstats.rpccnt[NFSPROC_READDIR],
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nfsstats.rpccnt[NFSPROC_STATFS],
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nfsstats.rpccnt[NQNFSPROC_READDIRLOOK]);
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printf("%9.9s %9.9s %9.9s\n",
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"GLease", "Vacate", "Evict");
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printf("%9d %9d %9d\n",
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nfsstats.rpccnt[NQNFSPROC_GETLEASE],
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nfsstats.rpccnt[NQNFSPROC_VACATED],
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nfsstats.rpccnt[NQNFSPROC_EVICTED]);
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printf("Rpc Info:\n");
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printf("%9.9s %9.9s %9.9s %9.9s %9.9s\n",
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"TimedOut", "Invalid", "X Replies", "Retries", "Requests");
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printf("%9d %9d %9d %9d %9d\n",
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nfsstats.rpctimeouts,
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nfsstats.rpcinvalid,
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nfsstats.rpcunexpected,
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nfsstats.rpcretries,
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nfsstats.rpcrequests);
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printf("Cache Info:\n");
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printf("%9.9s %9.9s %9.9s %9.9s",
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"Attr Hits", "Misses", "Lkup Hits", "Misses");
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printf(" %9.9s %9.9s %9.9s %9.9s\n",
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"BioR Hits", "Misses", "BioW Hits", "Misses");
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printf("%9d %9d %9d %9d",
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nfsstats.attrcache_hits, nfsstats.attrcache_misses,
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nfsstats.lookupcache_hits, nfsstats.lookupcache_misses);
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printf(" %9d %9d %9d %9d\n",
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nfsstats.biocache_reads-nfsstats.read_bios,
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nfsstats.read_bios,
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nfsstats.biocache_writes-nfsstats.write_bios,
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nfsstats.write_bios);
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printf("%9.9s %9.9s %9.9s %9.9s",
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"BioRLHits", "Misses", "BioD Hits", "Misses");
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printf(" %9.9s %9.9s\n", "DirE Hits", "Misses");
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printf("%9d %9d %9d %9d",
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nfsstats.biocache_readlinks-nfsstats.readlink_bios,
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nfsstats.readlink_bios,
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nfsstats.biocache_readdirs-nfsstats.readdir_bios,
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nfsstats.readdir_bios);
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printf(" %9d %9d\n",
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nfsstats.direofcache_hits, nfsstats.direofcache_misses);
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printf("\nServer Info:\n");
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printf("%9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s\n",
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"Getattr", "Setattr", "Lookup", "Readlink", "Read",
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"Write", "Create", "Remove");
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printf("%9d %9d %9d %9d %9d %9d %9d %9d\n",
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nfsstats.srvrpccnt[NFSPROC_GETATTR],
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nfsstats.srvrpccnt[NFSPROC_SETATTR],
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nfsstats.srvrpccnt[NFSPROC_LOOKUP],
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nfsstats.srvrpccnt[NFSPROC_READLINK],
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nfsstats.srvrpccnt[NFSPROC_READ],
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nfsstats.srvrpccnt[NFSPROC_WRITE],
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nfsstats.srvrpccnt[NFSPROC_CREATE],
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nfsstats.srvrpccnt[NFSPROC_REMOVE]);
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printf("%9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s\n",
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"Rename", "Link", "Symlink", "Mkdir", "Rmdir",
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"Readdir", "Statfs", "RdirLook");
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printf("%9d %9d %9d %9d %9d %9d %9d %9d\n",
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nfsstats.srvrpccnt[NFSPROC_RENAME],
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nfsstats.srvrpccnt[NFSPROC_LINK],
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nfsstats.srvrpccnt[NFSPROC_SYMLINK],
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nfsstats.srvrpccnt[NFSPROC_MKDIR],
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nfsstats.srvrpccnt[NFSPROC_RMDIR],
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nfsstats.srvrpccnt[NFSPROC_READDIR],
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nfsstats.srvrpccnt[NFSPROC_STATFS],
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nfsstats.srvrpccnt[NQNFSPROC_READDIRLOOK]);
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printf("%9.9s %9.9s %9.9s\n",
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"GLease", "Vacate", "Evict");
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printf("%9d %9d %9d\n",
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nfsstats.srvrpccnt[NQNFSPROC_GETLEASE],
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nfsstats.srvrpccnt[NQNFSPROC_VACATED],
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nfsstats.srvrpccnt[NQNFSPROC_EVICTED]);
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printf("Server Ret-Failed\n");
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printf("%17d\n", nfsstats.srvrpc_errs);
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printf("Server Faults\n");
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printf("%13d\n", nfsstats.srv_errs);
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printf("Server Cache Stats:\n");
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printf("%9.9s %9.9s %9.9s %9.9s\n",
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"Inprog", "Idem", "Non-idem", "Misses");
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printf("%9d %9d %9d %9d\n",
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nfsstats.srvcache_inproghits,
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nfsstats.srvcache_idemdonehits,
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nfsstats.srvcache_nonidemdonehits,
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nfsstats.srvcache_misses);
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printf("Server Lease Stats:\n");
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printf("%9.9s %9.9s %9.9s\n",
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"Leases", "PeakL", "GLeases");
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printf("%9d %9d %9d\n",
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nfsstats.srvnqnfs_leases,
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nfsstats.srvnqnfs_maxleases,
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nfsstats.srvnqnfs_getleases);
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}
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u_char signalled; /* set if alarm goes off "early" */
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/*
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* Print a running summary of nfs statistics.
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* Repeat display every interval seconds, showing statistics
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* collected over that interval. Assumes that interval is non-zero.
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* First line printed at top of screen is always cumulative.
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*/
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void
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sidewaysintpr(interval)
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u_int interval;
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{
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struct nfsstats nfsstats, lastst;
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int hdrcnt, oldmask;
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void catchalarm();
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(void)signal(SIGALRM, catchalarm);
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signalled = 0;
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(void)alarm(interval);
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bzero((caddr_t)&lastst, sizeof(lastst));
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for (hdrcnt = 1;;) {
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if (!--hdrcnt) {
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printhdr();
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hdrcnt = 20;
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}
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readstats(&nfsstats);
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printf("Client: %8d %8d %8d %8d %8d %8d %8d %8d\n",
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nfsstats.rpccnt[1]-lastst.rpccnt[1],
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nfsstats.rpccnt[4]-lastst.rpccnt[4],
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nfsstats.rpccnt[5]-lastst.rpccnt[5],
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nfsstats.rpccnt[6]-lastst.rpccnt[6],
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nfsstats.rpccnt[8]-lastst.rpccnt[8],
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nfsstats.rpccnt[11]-lastst.rpccnt[11],
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nfsstats.rpccnt[12]-lastst.rpccnt[12],
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nfsstats.rpccnt[16]-lastst.rpccnt[16]);
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printf("Server: %8d %8d %8d %8d %8d %8d %8d %8d\n",
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nfsstats.srvrpccnt[1]-lastst.srvrpccnt[1],
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nfsstats.srvrpccnt[4]-lastst.srvrpccnt[4],
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nfsstats.srvrpccnt[5]-lastst.srvrpccnt[5],
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nfsstats.srvrpccnt[6]-lastst.srvrpccnt[6],
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nfsstats.srvrpccnt[8]-lastst.srvrpccnt[8],
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nfsstats.srvrpccnt[11]-lastst.srvrpccnt[11],
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nfsstats.srvrpccnt[12]-lastst.srvrpccnt[12],
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nfsstats.srvrpccnt[16]-lastst.srvrpccnt[16]);
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lastst = nfsstats;
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fflush(stdout);
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oldmask = sigblock(sigmask(SIGALRM));
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if (!signalled)
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sigpause(0);
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sigsetmask(oldmask);
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signalled = 0;
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(void)alarm(interval);
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}
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/*NOTREACHED*/
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}
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void
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printhdr()
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{
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printf(" %8.8s %8.8s %8.8s %8.8s %8.8s %8.8s %8.8s %8.8s\n",
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"Getattr", "Lookup", "Readlink", "Read", "Write", "Rename",
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"Link", "Readdir");
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fflush(stdout);
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}
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/*
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* Called if an interval expires before sidewaysintpr has completed a loop.
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* Sets a flag to not wait for the alarm.
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*/
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void
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catchalarm()
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{
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signalled = 1;
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}
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void
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usage()
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{
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(void)fprintf(stderr,
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"usage: nfsstat [-M core] [-N system] [-w interval]\n");
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exit(1);
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}
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