479 lines
14 KiB
C
479 lines
14 KiB
C
/* $NetBSD: nfsstat.c,v 1.24 2011/09/06 18:19:58 joerg Exp $ */
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/*
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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. 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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#include <sys/cdefs.h>
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#ifndef lint
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__COPYRIGHT("@(#) Copyright (c) 1983, 1989, 1993\
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The Regents of the University of California. All rights reserved.");
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#endif /* not lint */
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#ifndef lint
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#if 0
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static char sccsid[] = "from: @(#)nfsstat.c 8.1 (Berkeley) 6/6/93";
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#else
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__RCSID("$NetBSD: nfsstat.c,v 1.24 2011/09/06 18:19:58 joerg Exp $");
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#endif
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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/rpcv2.h>
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#include <nfs/nfsproto.h>
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#include <nfs/nfs.h>
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#include <ctype.h>
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#include <err.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <kvm.h>
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#include <limits.h>
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#include <nlist.h>
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#include <paths.h>
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#include <signal.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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static struct nlist nl[] = {
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#define N_NFSSTAT 0
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{ "_nfsstats", 0, 0, 0, 0 },
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{ "", 0, 0, 0, 0 },
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};
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#define MASK(a) (1 << NFSPROC_##a)
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#define ALLMASK \
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(MASK(GETATTR) | MASK(SETATTR) | MASK(LOOKUP) | MASK(READ) | \
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MASK(WRITE) | MASK(RENAME)| MASK(ACCESS) | MASK(READDIR) | \
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MASK(READDIRPLUS))
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#define OTHERMASK (((1 << NFS_NPROCS) - 1) & ~ALLMASK)
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static const struct shortprocs {
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int mask;
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const char *name;
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} shortprocs[] = {
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{MASK(GETATTR), "Getattr"},
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{MASK(SETATTR), "Setattr"},
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{MASK(LOOKUP), "Lookup"},
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{MASK(READ), "Read"},
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{MASK(WRITE), "Write"},
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{MASK(RENAME), "Rename"},
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{MASK(ACCESS), "Access"},
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{MASK(READDIR) | MASK(READDIRPLUS), "Readdir"},
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{OTHERMASK, "Others"},
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};
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#define NSHORTPROC (sizeof(shortprocs)/sizeof(shortprocs[0]))
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static void catchalarm(int);
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static void getstats(struct nfsstats *);
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static void intpr(void);
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static void printhdr(void);
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__dead static void sidewaysintpr(u_int);
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__dead static void usage(void);
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static kvm_t *kd;
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static int printall, clientinfo, serverinfo;
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static u_long nfsstataddr;
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int
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main(int argc, char **argv)
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{
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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[_POSIX2_LINE_MAX];
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interval = 0;
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memf = nlistf = NULL;
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printall = 1;
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while ((ch = getopt(argc, argv, "M:N:w:cs")) != -1)
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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 's':
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serverinfo = 1;
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printall = 0;
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break;
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case 'c':
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clientinfo = 1;
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printall = 0;
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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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if (nlistf || memf) {
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if ((kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, errbuf))
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== 0)
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errx(1, "kvm_openfiles: %s", errbuf);
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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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nfsstataddr = nl[N_NFSSTAT].n_value;
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} else {
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kd = NULL;
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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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static void
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getstats(struct nfsstats *ns)
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{
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size_t size;
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int mib[3];
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if (kd) {
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if (kvm_read(kd, (u_long)nfsstataddr, ns, sizeof(*ns))
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!= sizeof(*ns))
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errx(1, "kvm_read failed");
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} else {
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mib[0] = CTL_VFS;
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mib[1] = 2; /* XXX from CTL_VFS_NAMES in <sys/mount.h> */
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mib[2] = NFS_NFSSTATS;
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size = sizeof(*ns);
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if (sysctl(mib, 3, ns, &size, NULL, 0) == -1)
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err(1, "sysctl(NFS_NFSSTATS) failed");
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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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static void
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intpr(void)
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{
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struct nfsstats nfsstats;
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int64_t total;
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int i;
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#define PCT(x,y) ((y) == 0 ? 0 : (int)((int64_t)(x) * 100 / (y)))
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#define NUMPCT(x,y) (x), PCT(x, (x)+(y))
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#define RPCSTAT(x) (x), PCT(x, total)
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getstats(&nfsstats);
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if (printall || clientinfo) {
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total = 0;
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for (i = 0; i < NFS_NPROCS; i++)
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total += nfsstats.rpccnt[i];
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printf("Client Info:\n");
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printf("RPC Counts: (%lld call%s)\n", (long long)total,
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total == 1 ? "" : "s");
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printf("%10s %14s %14s %14s %14s\n",
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"null", "getattr", "setattr", "lookup", "access");
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printf(
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"%10d %2d%% %10d %2d%% %10d %2d%% %10d %2d%% %10d %2d%%\n",
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RPCSTAT(nfsstats.rpccnt[NFSPROC_NULL]),
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RPCSTAT(nfsstats.rpccnt[NFSPROC_GETATTR]),
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RPCSTAT(nfsstats.rpccnt[NFSPROC_SETATTR]),
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RPCSTAT(nfsstats.rpccnt[NFSPROC_LOOKUP]),
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RPCSTAT(nfsstats.rpccnt[NFSPROC_ACCESS]));
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printf("%10s %14s %14s %14s %14s\n",
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"readlink", "read", "write", "create", "mkdir");
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printf(
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"%10d %2d%% %10d %2d%% %10d %2d%% %10d %2d%% %10d %2d%%\n",
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RPCSTAT(nfsstats.rpccnt[NFSPROC_READLINK]),
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RPCSTAT(nfsstats.rpccnt[NFSPROC_READ]),
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RPCSTAT(nfsstats.rpccnt[NFSPROC_WRITE]),
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RPCSTAT(nfsstats.rpccnt[NFSPROC_CREATE]),
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RPCSTAT(nfsstats.rpccnt[NFSPROC_MKDIR]));
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printf("%10s %14s %14s %14s %14s\n",
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"symlink", "mknod", "remove", "rmdir", "rename");
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printf(
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"%10d %2d%% %10d %2d%% %10d %2d%% %10d %2d%% %10d %2d%%\n",
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RPCSTAT(nfsstats.rpccnt[NFSPROC_SYMLINK]),
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RPCSTAT(nfsstats.rpccnt[NFSPROC_MKNOD]),
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RPCSTAT(nfsstats.rpccnt[NFSPROC_REMOVE]),
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RPCSTAT(nfsstats.rpccnt[NFSPROC_RMDIR]),
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RPCSTAT(nfsstats.rpccnt[NFSPROC_RENAME]));
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printf("%10s %14s %14s %14s %14s\n",
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"link", "readdir", "readdirplus", "fsstat", "fsinfo");
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printf(
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"%10d %2d%% %10d %2d%% %10d %2d%% %10d %2d%% %10d %2d%%\n",
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RPCSTAT(nfsstats.rpccnt[NFSPROC_LINK]),
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RPCSTAT(nfsstats.rpccnt[NFSPROC_READDIR]),
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RPCSTAT(nfsstats.rpccnt[NFSPROC_READDIRPLUS]),
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RPCSTAT(nfsstats.rpccnt[NFSPROC_FSSTAT]),
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RPCSTAT(nfsstats.rpccnt[NFSPROC_FSINFO]));
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printf("%10s %14s\n",
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"pathconf", "commit");
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printf("%10d %2d%% %10d %2d%%\n",
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RPCSTAT(nfsstats.rpccnt[NFSPROC_PATHCONF]),
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RPCSTAT(nfsstats.rpccnt[NFSPROC_COMMIT]));
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printf("RPC Info:\n");
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printf("%10s %14s %14s %14s %14s\n",
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"timeout", "invalid", "unexpected", "retries", "requests");
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printf("%10d %14d %14d %14d %14d\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("%10s %14s %14s %14s %14s\n",
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"attrcache", "lookupcache", "read", "write", "readlink");
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printf(
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"%10d %2d%% %10d %2d%% %10d %2d%% %10d %2d%% %10d %2d%%\n",
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NUMPCT(nfsstats.attrcache_hits,
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nfsstats.attrcache_misses),
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NUMPCT(nfsstats.lookupcache_hits,
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nfsstats.lookupcache_misses),
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NUMPCT(nfsstats.biocache_reads - nfsstats.read_bios,
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nfsstats.read_bios),
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NUMPCT(nfsstats.biocache_writes - nfsstats.write_bios,
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nfsstats.write_bios),
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NUMPCT(nfsstats.biocache_readlinks - nfsstats.readlink_bios,
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nfsstats.readlink_bios));
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printf("%10s %14s\n",
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"readdir", "direofcache");
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printf("%10d %2d%% %10d %2d%%\n",
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NUMPCT(nfsstats.biocache_readdirs - nfsstats.readdir_bios,
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nfsstats.readdir_bios),
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NUMPCT(nfsstats.direofcache_hits,
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nfsstats.direofcache_misses));
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}
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if (printall || (clientinfo && serverinfo))
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printf("\n");
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if (printall || serverinfo) {
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total = 0;
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for (i = 0; i < NFS_NPROCS; i++)
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total += nfsstats.srvrpccnt[i];
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printf("Server Info:\n");
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printf("RPC Counts: (%lld call%s)\n", (long long)total,
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total == 1 ? "" : "s");
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printf("%10s %14s %14s %14s %14s\n",
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"null", "getattr", "setattr", "lookup", "access");
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printf(
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"%10d %2d%% %10d %2d%% %10d %2d%% %10d %2d%% %10d %2d%%\n",
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RPCSTAT(nfsstats.srvrpccnt[NFSPROC_NULL]),
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RPCSTAT(nfsstats.srvrpccnt[NFSPROC_GETATTR]),
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RPCSTAT(nfsstats.srvrpccnt[NFSPROC_SETATTR]),
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RPCSTAT(nfsstats.srvrpccnt[NFSPROC_LOOKUP]),
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RPCSTAT(nfsstats.srvrpccnt[NFSPROC_ACCESS]));
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printf("%10s %14s %14s %14s %14s\n",
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"readlink", "read", "write", "create", "mkdir");
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printf(
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"%10d %2d%% %10d %2d%% %10d %2d%% %10d %2d%% %10d %2d%%\n",
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RPCSTAT(nfsstats.srvrpccnt[NFSPROC_READLINK]),
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RPCSTAT(nfsstats.srvrpccnt[NFSPROC_READ]),
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RPCSTAT(nfsstats.srvrpccnt[NFSPROC_WRITE]),
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RPCSTAT(nfsstats.srvrpccnt[NFSPROC_CREATE]),
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RPCSTAT(nfsstats.srvrpccnt[NFSPROC_MKDIR]));
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printf("%10s %14s %14s %14s %14s\n",
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"symlink", "mknod", "remove", "rmdir", "rename");
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printf(
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"%10d %2d%% %10d %2d%% %10d %2d%% %10d %2d%% %10d %2d%%\n",
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RPCSTAT(nfsstats.srvrpccnt[NFSPROC_SYMLINK]),
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RPCSTAT(nfsstats.srvrpccnt[NFSPROC_MKNOD]),
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RPCSTAT(nfsstats.srvrpccnt[NFSPROC_REMOVE]),
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RPCSTAT(nfsstats.srvrpccnt[NFSPROC_RMDIR]),
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RPCSTAT(nfsstats.srvrpccnt[NFSPROC_RENAME]));
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printf("%10s %14s %14s %14s %14s\n",
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"link", "readdir", "readdirplus", "fsstat", "fsinfo");
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printf(
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"%10d %2d%% %10d %2d%% %10d %2d%% %10d %2d%% %10d %2d%%\n",
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RPCSTAT(nfsstats.srvrpccnt[NFSPROC_LINK]),
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RPCSTAT(nfsstats.srvrpccnt[NFSPROC_READDIR]),
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RPCSTAT(nfsstats.srvrpccnt[NFSPROC_READDIRPLUS]),
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RPCSTAT(nfsstats.srvrpccnt[NFSPROC_FSSTAT]),
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RPCSTAT(nfsstats.srvrpccnt[NFSPROC_FSINFO]));
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printf("%10s %14s\n",
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"pathconf", "commit");
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printf("%10d %2d%% %10d %2d%%\n",
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RPCSTAT(nfsstats.srvrpccnt[NFSPROC_PATHCONF]),
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RPCSTAT(nfsstats.srvrpccnt[NFSPROC_COMMIT]));
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printf("Server Errors:\n");
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printf("%10s %14s\n",
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"RPC errors", "faults");
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printf("%10d %14d\n",
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nfsstats.srvrpc_errs,
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nfsstats.srv_errs);
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printf("Server Cache Stats:\n");
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printf("%10s %14s %14s %14s\n",
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"inprogress", "idem", "non-idem", "misses");
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printf("%10d %14d %14d %14d\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 Write Gathering:\n");
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printf("%10s %14s %14s\n",
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"writes", "write RPC", "OPs saved");
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printf("%10d %14d %14d %2d%%\n",
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nfsstats.srvvop_writes,
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nfsstats.srvrpccnt[NFSPROC_WRITE],
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NUMPCT(
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nfsstats.srvrpccnt[NFSPROC_WRITE]-nfsstats.srvvop_writes,
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nfsstats.srvrpccnt[NFSPROC_WRITE]));
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}
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}
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static 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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static void
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sidewaysintpr(u_int interval)
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{
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struct nfsstats nfsstats;
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int hdrcnt, oldmask;
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struct stats {
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int client[NSHORTPROC];
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int server[NSHORTPROC];
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} current, last;
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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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memset(&last, 0, sizeof(last));
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for (hdrcnt = 1;;) {
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size_t i;
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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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getstats(&nfsstats);
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memset(¤t, 0, sizeof(current));
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for (i = 0; i < NSHORTPROC; i++) {
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int mask = shortprocs[i].mask;
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int idx;
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while ((idx = ffs(mask)) != 0) {
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idx--;
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mask &= ~(1 << idx);
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current.client[i] += nfsstats.rpccnt[idx];
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current.server[i] += nfsstats.srvrpccnt[idx];
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}
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}
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if (printall || clientinfo) {
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printf("Client:");
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for (i = 0; i < NSHORTPROC; i++)
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printf(" %7d",
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current.client[i] - last.client[i]);
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printf("\n");
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}
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if (printall || serverinfo) {
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printf("Server:");
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for (i = 0; i < NSHORTPROC; i++)
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printf(" %7d",
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current.server[i] - last.server[i]);
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printf("\n");
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}
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memcpy(&last, ¤t, sizeof(last));
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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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static void
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printhdr(void)
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{
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size_t i;
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printf(" ");
|
|
for (i = 0; i < NSHORTPROC; i++)
|
|
printf("%7.7s ", shortprocs[i].name);
|
|
printf("\n");
|
|
fflush(stdout);
|
|
}
|
|
|
|
/*
|
|
* Called if an interval expires before sidewaysintpr has completed a loop.
|
|
* Sets a flag to not wait for the alarm.
|
|
*/
|
|
static void
|
|
catchalarm(int dummy)
|
|
{
|
|
|
|
signalled = 1;
|
|
}
|
|
|
|
static void
|
|
usage(void)
|
|
{
|
|
|
|
(void)fprintf(stderr,
|
|
"usage: nfsstat [-cs] [-M core] [-N system] [-w interval]\n");
|
|
exit(1);
|
|
}
|