nfsstat.c revision 1590 
1/*
2 * Copyright (c) 1983, 1989, 1993
3 *	The Regents of the University of California.  All rights reserved.
4 *
5 * This code is derived from software contributed to Berkeley by
6 * Rick Macklem at The University of Guelph.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 *    must display the following acknowledgement:
18 *	This product includes software developed by the University of
19 *	California, Berkeley and its contributors.
20 * 4. Neither the name of the University nor the names of its contributors
21 *    may be used to endorse or promote products derived from this software
22 *    without specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35 */
36
37#ifndef lint
38static char copyright[] =
39"@(#) Copyright (c) 1983, 1989, 1993\n\
40	The Regents of the University of California.  All rights reserved.\n";
41#endif /* not lint */
42
43#ifndef lint
44static char sccsid[] = "@(#)nfsstat.c	8.1 (Berkeley) 6/6/93";
45#endif /* not lint */
46
47#include <sys/param.h>
48#if BSD >= 199103
49#define NEWVM
50#endif
51#ifndef NEWVM
52#include <sys/vmmac.h>
53#include <sys/ucred.h>
54#include <machine/pte.h>
55#endif
56#include <sys/mount.h>
57#include <nfs/nfsv2.h>
58#include <nfs/nfs.h>
59#include <signal.h>
60#include <fcntl.h>
61#include <ctype.h>
62#include <errno.h>
63#include <kvm.h>
64#include <nlist.h>
65#include <unistd.h>
66#include <stdio.h>
67#include <stdlib.h>
68#include <string.h>
69#include <paths.h>
70
71struct nlist nl[] = {
72#define	N_NFSSTAT	0
73	{ "_nfsstats" },
74	"",
75};
76kvm_t *kd;
77
78void intpr(), printhdr(), sidewaysintpr(), usage();
79
80main(argc, argv)
81	int argc;
82	char **argv;
83{
84	extern int optind;
85	extern char *optarg;
86	u_int interval;
87	int ch;
88	char *memf, *nlistf;
89	char errbuf[80];
90
91	interval = 0;
92	memf = nlistf = NULL;
93	while ((ch = getopt(argc, argv, "M:N:w:")) != EOF)
94		switch(ch) {
95		case 'M':
96			memf = optarg;
97			break;
98		case 'N':
99			nlistf = optarg;
100			break;
101		case 'w':
102			interval = atoi(optarg);
103			break;
104		case '?':
105		default:
106			usage();
107		}
108	argc -= optind;
109	argv += optind;
110
111#define	BACKWARD_COMPATIBILITY
112#ifdef	BACKWARD_COMPATIBILITY
113	if (*argv) {
114		interval = atoi(*argv);
115		if (*++argv) {
116			nlistf = *argv;
117			if (*++argv)
118				memf = *argv;
119		}
120	}
121#endif
122	/*
123	 * Discard setgid privileges if not the running kernel so that bad
124	 * guys can't print interesting stuff from kernel memory.
125	 */
126	if (nlistf != NULL || memf != NULL)
127		setgid(getgid());
128
129	if ((kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, errbuf)) == 0) {
130		fprintf(stderr, "nfsstat: kvm_openfiles: %s\n", errbuf);
131		exit(1);
132	}
133	if (kvm_nlist(kd, nl) != 0) {
134		fprintf(stderr, "nfsstat: kvm_nlist: can't get names\n");
135		exit(1);
136	}
137
138	if (interval)
139		sidewaysintpr(interval, nl[N_NFSSTAT].n_value);
140	else
141		intpr(nl[N_NFSSTAT].n_value);
142	exit(0);
143}
144
145/*
146 * Print a description of the nfs stats.
147 */
148void
149intpr(nfsstataddr)
150	u_long nfsstataddr;
151{
152	struct nfsstats nfsstats;
153
154	if (kvm_read(kd, (u_long)nfsstataddr, (char *)&nfsstats, sizeof(struct nfsstats)) < 0) {
155		fprintf(stderr, "nfsstat: kvm_read failed\n");
156		exit(1);
157	}
158	printf("Client Info:\n");
159	printf("Rpc Counts:\n");
160	printf("%9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s\n",
161		"Getattr", "Setattr", "Lookup", "Readlink", "Read",
162		"Write", "Create", "Remove");
163	printf("%9d %9d %9d %9d %9d %9d %9d %9d\n",
164		nfsstats.rpccnt[NFSPROC_GETATTR],
165		nfsstats.rpccnt[NFSPROC_SETATTR],
166		nfsstats.rpccnt[NFSPROC_LOOKUP],
167		nfsstats.rpccnt[NFSPROC_READLINK],
168		nfsstats.rpccnt[NFSPROC_READ],
169		nfsstats.rpccnt[NFSPROC_WRITE],
170		nfsstats.rpccnt[NFSPROC_CREATE],
171		nfsstats.rpccnt[NFSPROC_REMOVE]);
172	printf("%9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s\n",
173		"Rename", "Link", "Symlink", "Mkdir", "Rmdir",
174		"Readdir", "Statfs", "RdirLook");
175	printf("%9d %9d %9d %9d %9d %9d %9d %9d\n",
176		nfsstats.rpccnt[NFSPROC_RENAME],
177		nfsstats.rpccnt[NFSPROC_LINK],
178		nfsstats.rpccnt[NFSPROC_SYMLINK],
179		nfsstats.rpccnt[NFSPROC_MKDIR],
180		nfsstats.rpccnt[NFSPROC_RMDIR],
181		nfsstats.rpccnt[NFSPROC_READDIR],
182		nfsstats.rpccnt[NFSPROC_STATFS],
183		nfsstats.rpccnt[NQNFSPROC_READDIRLOOK]);
184	printf("%9.9s %9.9s %9.9s\n",
185		"GLease", "Vacate", "Evict");
186	printf("%9d %9d %9d\n",
187		nfsstats.rpccnt[NQNFSPROC_GETLEASE],
188		nfsstats.rpccnt[NQNFSPROC_VACATED],
189		nfsstats.rpccnt[NQNFSPROC_EVICTED]);
190	printf("Rpc Info:\n");
191	printf("%9.9s %9.9s %9.9s %9.9s %9.9s\n",
192		"TimedOut", "Invalid", "X Replies", "Retries", "Requests");
193	printf("%9d %9d %9d %9d %9d\n",
194		nfsstats.rpctimeouts,
195		nfsstats.rpcinvalid,
196		nfsstats.rpcunexpected,
197		nfsstats.rpcretries,
198		nfsstats.rpcrequests);
199	printf("Cache Info:\n");
200	printf("%9.9s %9.9s %9.9s %9.9s",
201		"Attr Hits", "Misses", "Lkup Hits", "Misses");
202	printf(" %9.9s %9.9s %9.9s %9.9s\n",
203		"BioR Hits", "Misses", "BioW Hits", "Misses");
204	printf("%9d %9d %9d %9d",
205		nfsstats.attrcache_hits, nfsstats.attrcache_misses,
206		nfsstats.lookupcache_hits, nfsstats.lookupcache_misses);
207	printf(" %9d %9d %9d %9d\n",
208		nfsstats.biocache_reads-nfsstats.read_bios,
209		nfsstats.read_bios,
210		nfsstats.biocache_writes-nfsstats.write_bios,
211		nfsstats.write_bios);
212	printf("%9.9s %9.9s %9.9s %9.9s",
213		"BioRLHits", "Misses", "BioD Hits", "Misses");
214	printf(" %9.9s %9.9s\n", "DirE Hits", "Misses");
215	printf("%9d %9d %9d %9d",
216		nfsstats.biocache_readlinks-nfsstats.readlink_bios,
217		nfsstats.readlink_bios,
218		nfsstats.biocache_readdirs-nfsstats.readdir_bios,
219		nfsstats.readdir_bios);
220	printf(" %9d %9d\n",
221		nfsstats.direofcache_hits, nfsstats.direofcache_misses);
222	printf("\nServer Info:\n");
223	printf("%9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s\n",
224		"Getattr", "Setattr", "Lookup", "Readlink", "Read",
225		"Write", "Create", "Remove");
226	printf("%9d %9d %9d %9d %9d %9d %9d %9d\n",
227		nfsstats.srvrpccnt[NFSPROC_GETATTR],
228		nfsstats.srvrpccnt[NFSPROC_SETATTR],
229		nfsstats.srvrpccnt[NFSPROC_LOOKUP],
230		nfsstats.srvrpccnt[NFSPROC_READLINK],
231		nfsstats.srvrpccnt[NFSPROC_READ],
232		nfsstats.srvrpccnt[NFSPROC_WRITE],
233		nfsstats.srvrpccnt[NFSPROC_CREATE],
234		nfsstats.srvrpccnt[NFSPROC_REMOVE]);
235	printf("%9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s\n",
236		"Rename", "Link", "Symlink", "Mkdir", "Rmdir",
237		"Readdir", "Statfs", "RdirLook");
238	printf("%9d %9d %9d %9d %9d %9d %9d %9d\n",
239		nfsstats.srvrpccnt[NFSPROC_RENAME],
240		nfsstats.srvrpccnt[NFSPROC_LINK],
241		nfsstats.srvrpccnt[NFSPROC_SYMLINK],
242		nfsstats.srvrpccnt[NFSPROC_MKDIR],
243		nfsstats.srvrpccnt[NFSPROC_RMDIR],
244		nfsstats.srvrpccnt[NFSPROC_READDIR],
245		nfsstats.srvrpccnt[NFSPROC_STATFS],
246		nfsstats.srvrpccnt[NQNFSPROC_READDIRLOOK]);
247	printf("%9.9s %9.9s %9.9s\n",
248		"GLease", "Vacate", "Evict");
249	printf("%9d %9d %9d\n",
250		nfsstats.srvrpccnt[NQNFSPROC_GETLEASE],
251		nfsstats.srvrpccnt[NQNFSPROC_VACATED],
252		nfsstats.srvrpccnt[NQNFSPROC_EVICTED]);
253	printf("Server Ret-Failed\n");
254	printf("%17d\n", nfsstats.srvrpc_errs);
255	printf("Server Faults\n");
256	printf("%13d\n", nfsstats.srv_errs);
257	printf("Server Cache Stats:\n");
258	printf("%9.9s %9.9s %9.9s %9.9s\n",
259		"Inprog", "Idem", "Non-idem", "Misses");
260	printf("%9d %9d %9d %9d\n",
261		nfsstats.srvcache_inproghits,
262		nfsstats.srvcache_idemdonehits,
263		nfsstats.srvcache_nonidemdonehits,
264		nfsstats.srvcache_misses);
265	printf("Server Lease Stats:\n");
266	printf("%9.9s %9.9s %9.9s\n",
267		"Leases", "PeakL", "GLeases");
268	printf("%9d %9d %9d\n",
269		nfsstats.srvnqnfs_leases,
270		nfsstats.srvnqnfs_maxleases,
271		nfsstats.srvnqnfs_getleases);
272}
273
274u_char	signalled;			/* set if alarm goes off "early" */
275
276/*
277 * Print a running summary of nfs statistics.
278 * Repeat display every interval seconds, showing statistics
279 * collected over that interval.  Assumes that interval is non-zero.
280 * First line printed at top of screen is always cumulative.
281 */
282void
283sidewaysintpr(interval, off)
284	u_int interval;
285	u_long off;
286{
287	struct nfsstats nfsstats, lastst;
288	int hdrcnt, oldmask;
289	void catchalarm();
290
291	(void)signal(SIGALRM, catchalarm);
292	signalled = 0;
293	(void)alarm(interval);
294	bzero((caddr_t)&lastst, sizeof(lastst));
295
296	for (hdrcnt = 1;;) {
297		if (!--hdrcnt) {
298			printhdr();
299			hdrcnt = 20;
300		}
301		if (kvm_read(kd, off, (char *)&nfsstats, sizeof nfsstats) < 0) {
302			fprintf(stderr, "nfsstat: kvm_read failed\n");
303			exit(1);
304		}
305		printf("Client: %8d %8d %8d %8d %8d %8d %8d %8d\n",
306		    nfsstats.rpccnt[1]-lastst.rpccnt[1],
307		    nfsstats.rpccnt[4]-lastst.rpccnt[4],
308		    nfsstats.rpccnt[5]-lastst.rpccnt[5],
309		    nfsstats.rpccnt[6]-lastst.rpccnt[6],
310		    nfsstats.rpccnt[8]-lastst.rpccnt[8],
311		    nfsstats.rpccnt[11]-lastst.rpccnt[11],
312		    nfsstats.rpccnt[12]-lastst.rpccnt[12],
313		    nfsstats.rpccnt[16]-lastst.rpccnt[16]);
314		printf("Server: %8d %8d %8d %8d %8d %8d %8d %8d\n",
315		    nfsstats.srvrpccnt[1]-lastst.srvrpccnt[1],
316		    nfsstats.srvrpccnt[4]-lastst.srvrpccnt[4],
317		    nfsstats.srvrpccnt[5]-lastst.srvrpccnt[5],
318		    nfsstats.srvrpccnt[6]-lastst.srvrpccnt[6],
319		    nfsstats.srvrpccnt[8]-lastst.srvrpccnt[8],
320		    nfsstats.srvrpccnt[11]-lastst.srvrpccnt[11],
321		    nfsstats.srvrpccnt[12]-lastst.srvrpccnt[12],
322		    nfsstats.srvrpccnt[16]-lastst.srvrpccnt[16]);
323		lastst = nfsstats;
324		fflush(stdout);
325		oldmask = sigblock(sigmask(SIGALRM));
326		if (!signalled)
327			sigpause(0);
328		sigsetmask(oldmask);
329		signalled = 0;
330		(void)alarm(interval);
331	}
332	/*NOTREACHED*/
333}
334
335void
336printhdr()
337{
338	printf("        %8.8s %8.8s %8.8s %8.8s %8.8s %8.8s %8.8s %8.8s\n",
339	    "Getattr", "Lookup", "Readlink", "Read", "Write", "Rename",
340	    "Link", "Readdir");
341	fflush(stdout);
342}
343
344/*
345 * Called if an interval expires before sidewaysintpr has completed a loop.
346 * Sets a flag to not wait for the alarm.
347 */
348void
349catchalarm()
350{
351	signalled = 1;
352}
353
354void
355usage()
356{
357	(void)fprintf(stderr,
358	    "usage: nfsstat [-M core] [-N system] [-w interval]\n");
359	exit(1);
360}
361