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 * %sccs.include.redist.c%
9 */
10
11 #ifndef lint
12 static char copyright[] =
13 "@(#) Copyright (c) 1983, 1989, 1993\n\
14 The Regents of the University of California. All rights reserved.\n";
15 #endif /* not lint */
16
17 #ifndef lint
18 static char sccsid[] = "@(#)nfsstat.c 8.2 (Berkeley) 03/31/95";
19 #endif /* not lint */
20
21 #include <sys/param.h>
22 #include <sys/mount.h>
23 #include <sys/sysctl.h>
24 #include <nfs/rpcv2.h>
25 #include <nfs/nfsproto.h>
26 #include <nfs/nfs.h>
27 #include <signal.h>
28 #include <fcntl.h>
29 #include <ctype.h>
30 #include <errno.h>
31 #include <kvm.h>
32 #include <nlist.h>
33 #include <unistd.h>
34 #include <stdio.h>
35 #include <stdlib.h>
36 #include <string.h>
37 #include <paths.h>
38 #include <err.h>
39
40 struct nlist nl[] = {
41 #define N_NFSSTAT 0
42 { "_nfsstats" },
43 "",
44 };
45 kvm_t *kd;
46
47 static int deadkernel = 0;
48
49 void intpr __P((void));
50 void printhdr __P((void));
51 void sidewaysintpr __P((u_int));
52 void usage __P((void));
53
main(argc,argv)54 main(argc, argv)
55 int argc;
56 char **argv;
57 {
58 extern int optind;
59 extern char *optarg;
60 u_int interval;
61 int ch;
62 char *memf, *nlistf;
63 char errbuf[80];
64
65 interval = 0;
66 memf = nlistf = NULL;
67 while ((ch = getopt(argc, argv, "M:N:w:")) != EOF)
68 switch(ch) {
69 case 'M':
70 memf = optarg;
71 break;
72 case 'N':
73 nlistf = optarg;
74 break;
75 case 'w':
76 interval = atoi(optarg);
77 break;
78 case '?':
79 default:
80 usage();
81 }
82 argc -= optind;
83 argv += optind;
84
85 #define BACKWARD_COMPATIBILITY
86 #ifdef BACKWARD_COMPATIBILITY
87 if (*argv) {
88 interval = atoi(*argv);
89 if (*++argv) {
90 nlistf = *argv;
91 if (*++argv)
92 memf = *argv;
93 }
94 }
95 #endif
96 /*
97 * Discard setgid privileges if not the running kernel so that bad
98 * guys can't print interesting stuff from kernel memory.
99 */
100 if (nlistf != NULL || memf != NULL) {
101 setgid(getgid());
102 deadkernel = 1;
103
104 if ((kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY,
105 errbuf)) == 0) {
106 errx(1, "kvm_openfiles: %s", errbuf);
107 }
108 if (kvm_nlist(kd, nl) != 0) {
109 errx(1, "kvm_nlist: can't get names");
110 }
111 }
112
113 if (interval)
114 sidewaysintpr(interval);
115 else
116 intpr();
117 exit(0);
118 }
119
120 /*
121 * Read the nfs stats using sysctl(3) for live kernels, or kvm_read
122 * for dead ones.
123 */
124 void
readstats(stp)125 readstats(stp)
126 struct nfsstats *stp;
127 {
128 if(deadkernel) {
129 if(kvm_read(kd, (u_long)nl[N_NFSSTAT].n_value, stp,
130 sizeof *stp) < 0) {
131 err(1, "kvm_read");
132 }
133 } else {
134 int name[3];
135 size_t buflen = sizeof *stp;
136 struct vfsconf vfc;
137
138 if (getvfsbyname("nfs", &vfc) < 0)
139 err(1, "getvfsbyname: NFS not compiled into kernel");
140 name[0] = CTL_VFS;
141 name[1] = vfc.vfc_typenum;
142 name[2] = NFS_NFSSTATS;
143 if (sysctl(name, 3, stp, &buflen, (void *)0, (size_t)0) < 0) {
144 err(1, "sysctl");
145 }
146 }
147 }
148
149 /*
150 * Print a description of the nfs stats.
151 */
152 void
intpr()153 intpr()
154 {
155 struct nfsstats nfsstats;
156
157 readstats(&nfsstats);
158
159 printf("Client Info:\n");
160 printf("Rpc Counts:\n");
161 printf("%9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s\n",
162 "Getattr", "Setattr", "Lookup", "Readlink", "Read",
163 "Write", "Create", "Remove");
164 printf("%9d %9d %9d %9d %9d %9d %9d %9d\n",
165 nfsstats.rpccnt[NFSPROC_GETATTR],
166 nfsstats.rpccnt[NFSPROC_SETATTR],
167 nfsstats.rpccnt[NFSPROC_LOOKUP],
168 nfsstats.rpccnt[NFSPROC_READLINK],
169 nfsstats.rpccnt[NFSPROC_READ],
170 nfsstats.rpccnt[NFSPROC_WRITE],
171 nfsstats.rpccnt[NFSPROC_CREATE],
172 nfsstats.rpccnt[NFSPROC_REMOVE]);
173 printf("%9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s\n",
174 "Rename", "Link", "Symlink", "Mkdir", "Rmdir",
175 "Readdir", "RdirPlus", "Access");
176 printf("%9d %9d %9d %9d %9d %9d %9d %9d\n",
177 nfsstats.rpccnt[NFSPROC_RENAME],
178 nfsstats.rpccnt[NFSPROC_LINK],
179 nfsstats.rpccnt[NFSPROC_SYMLINK],
180 nfsstats.rpccnt[NFSPROC_MKDIR],
181 nfsstats.rpccnt[NFSPROC_RMDIR],
182 nfsstats.rpccnt[NFSPROC_READDIR],
183 nfsstats.rpccnt[NFSPROC_READDIRPLUS],
184 nfsstats.rpccnt[NFSPROC_ACCESS]);
185 printf("%9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s\n",
186 "Mknod", "Fsstat", "Fsinfo", "PathConf", "Commit",
187 "GLease", "Vacate", "Evict");
188 printf("%9d %9d %9d %9d %9d %9d %9d %9d\n",
189 nfsstats.rpccnt[NFSPROC_MKNOD],
190 nfsstats.rpccnt[NFSPROC_FSSTAT],
191 nfsstats.rpccnt[NFSPROC_FSINFO],
192 nfsstats.rpccnt[NFSPROC_PATHCONF],
193 nfsstats.rpccnt[NFSPROC_COMMIT],
194 nfsstats.rpccnt[NQNFSPROC_GETLEASE],
195 nfsstats.rpccnt[NQNFSPROC_VACATED],
196 nfsstats.rpccnt[NQNFSPROC_EVICTED]);
197 printf("Rpc Info:\n");
198 printf("%9.9s %9.9s %9.9s %9.9s %9.9s\n",
199 "TimedOut", "Invalid", "X Replies", "Retries", "Requests");
200 printf("%9d %9d %9d %9d %9d\n",
201 nfsstats.rpctimeouts,
202 nfsstats.rpcinvalid,
203 nfsstats.rpcunexpected,
204 nfsstats.rpcretries,
205 nfsstats.rpcrequests);
206 printf("Cache Info:\n");
207 printf("%9.9s %9.9s %9.9s %9.9s",
208 "Attr Hits", "Misses", "Lkup Hits", "Misses");
209 printf(" %9.9s %9.9s %9.9s %9.9s\n",
210 "BioR Hits", "Misses", "BioW Hits", "Misses");
211 printf("%9d %9d %9d %9d",
212 nfsstats.attrcache_hits, nfsstats.attrcache_misses,
213 nfsstats.lookupcache_hits, nfsstats.lookupcache_misses);
214 printf(" %9d %9d %9d %9d\n",
215 nfsstats.biocache_reads-nfsstats.read_bios,
216 nfsstats.read_bios,
217 nfsstats.biocache_writes-nfsstats.write_bios,
218 nfsstats.write_bios);
219 printf("%9.9s %9.9s %9.9s %9.9s",
220 "BioRLHits", "Misses", "BioD Hits", "Misses");
221 printf(" %9.9s %9.9s\n", "DirE Hits", "Misses");
222 printf("%9d %9d %9d %9d",
223 nfsstats.biocache_readlinks-nfsstats.readlink_bios,
224 nfsstats.readlink_bios,
225 nfsstats.biocache_readdirs-nfsstats.readdir_bios,
226 nfsstats.readdir_bios);
227 printf(" %9d %9d\n",
228 nfsstats.direofcache_hits, nfsstats.direofcache_misses);
229 printf("\nServer Info:\n");
230 printf("%9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s\n",
231 "Getattr", "Setattr", "Lookup", "Readlink", "Read",
232 "Write", "Create", "Remove");
233 printf("%9d %9d %9d %9d %9d %9d %9d %9d\n",
234 nfsstats.srvrpccnt[NFSPROC_GETATTR],
235 nfsstats.srvrpccnt[NFSPROC_SETATTR],
236 nfsstats.srvrpccnt[NFSPROC_LOOKUP],
237 nfsstats.srvrpccnt[NFSPROC_READLINK],
238 nfsstats.srvrpccnt[NFSPROC_READ],
239 nfsstats.srvrpccnt[NFSPROC_WRITE],
240 nfsstats.srvrpccnt[NFSPROC_CREATE],
241 nfsstats.srvrpccnt[NFSPROC_REMOVE]);
242 printf("%9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s\n",
243 "Rename", "Link", "Symlink", "Mkdir", "Rmdir",
244 "Readdir", "RdirPlus", "Access");
245 printf("%9d %9d %9d %9d %9d %9d %9d %9d\n",
246 nfsstats.srvrpccnt[NFSPROC_RENAME],
247 nfsstats.srvrpccnt[NFSPROC_LINK],
248 nfsstats.srvrpccnt[NFSPROC_SYMLINK],
249 nfsstats.srvrpccnt[NFSPROC_MKDIR],
250 nfsstats.srvrpccnt[NFSPROC_RMDIR],
251 nfsstats.srvrpccnt[NFSPROC_READDIR],
252 nfsstats.srvrpccnt[NFSPROC_READDIRPLUS],
253 nfsstats.srvrpccnt[NFSPROC_ACCESS]);
254 printf("%9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s\n",
255 "Mknod", "Fsstat", "Fsinfo", "PathConf", "Commit",
256 "GLease", "Vacate", "Evict");
257 printf("%9d %9d %9d %9d %9d %9d %9d %9d\n",
258 nfsstats.srvrpccnt[NFSPROC_MKNOD],
259 nfsstats.srvrpccnt[NFSPROC_FSSTAT],
260 nfsstats.srvrpccnt[NFSPROC_FSINFO],
261 nfsstats.srvrpccnt[NFSPROC_PATHCONF],
262 nfsstats.srvrpccnt[NFSPROC_COMMIT],
263 nfsstats.srvrpccnt[NQNFSPROC_GETLEASE],
264 nfsstats.srvrpccnt[NQNFSPROC_VACATED],
265 nfsstats.srvrpccnt[NQNFSPROC_EVICTED]);
266 printf("Server Ret-Failed\n");
267 printf("%17d\n", nfsstats.srvrpc_errs);
268 printf("Server Faults\n");
269 printf("%13d\n", nfsstats.srv_errs);
270 printf("Server Cache Stats:\n");
271 printf("%9.9s %9.9s %9.9s %9.9s\n",
272 "Inprog", "Idem", "Non-idem", "Misses");
273 printf("%9d %9d %9d %9d\n",
274 nfsstats.srvcache_inproghits,
275 nfsstats.srvcache_idemdonehits,
276 nfsstats.srvcache_nonidemdonehits,
277 nfsstats.srvcache_misses);
278 printf("Server Lease Stats:\n");
279 printf("%9.9s %9.9s %9.9s\n",
280 "Leases", "PeakL", "GLeases");
281 printf("%9d %9d %9d\n",
282 nfsstats.srvnqnfs_leases,
283 nfsstats.srvnqnfs_maxleases,
284 nfsstats.srvnqnfs_getleases);
285 printf("Server Write Gathering:\n");
286 printf("%9.9s %9.9s %9.9s\n",
287 "WriteOps", "WriteRPC", "Opsaved");
288 printf("%9d %9d %9d\n",
289 nfsstats.srvvop_writes,
290 nfsstats.srvrpccnt[NFSPROC_WRITE],
291 nfsstats.srvrpccnt[NFSPROC_WRITE] - nfsstats.srvvop_writes);
292 }
293
294 u_char signalled; /* set if alarm goes off "early" */
295
296 /*
297 * Print a running summary of nfs statistics.
298 * Repeat display every interval seconds, showing statistics
299 * collected over that interval. Assumes that interval is non-zero.
300 * First line printed at top of screen is always cumulative.
301 */
302 void
sidewaysintpr(interval)303 sidewaysintpr(interval)
304 u_int interval;
305 {
306 struct nfsstats nfsstats, lastst;
307 int hdrcnt, oldmask;
308 void catchalarm();
309
310 (void)signal(SIGALRM, catchalarm);
311 signalled = 0;
312 (void)alarm(interval);
313 bzero((caddr_t)&lastst, sizeof(lastst));
314
315 for (hdrcnt = 1;;) {
316 if (!--hdrcnt) {
317 printhdr();
318 hdrcnt = 20;
319 }
320 readstats(&nfsstats);
321 printf("Client: %8d %8d %8d %8d %8d %8d %8d %8d\n",
322 nfsstats.rpccnt[NFSPROC_GETATTR]-lastst.rpccnt[NFSPROC_GETATTR],
323 nfsstats.rpccnt[NFSPROC_LOOKUP]-lastst.rpccnt[NFSPROC_LOOKUP],
324 nfsstats.rpccnt[NFSPROC_READLINK]-lastst.rpccnt[NFSPROC_READLINK],
325 nfsstats.rpccnt[NFSPROC_READ]-lastst.rpccnt[NFSPROC_READ],
326 nfsstats.rpccnt[NFSPROC_WRITE]-lastst.rpccnt[NFSPROC_WRITE],
327 nfsstats.rpccnt[NFSPROC_RENAME]-lastst.rpccnt[NFSPROC_RENAME],
328 nfsstats.rpccnt[NFSPROC_ACCESS]-lastst.rpccnt[NFSPROC_ACCESS],
329 (nfsstats.rpccnt[NFSPROC_READDIR]-lastst.rpccnt[NFSPROC_READDIR])
330 +(nfsstats.rpccnt[NFSPROC_READDIRPLUS]-lastst.rpccnt[NFSPROC_READDIRPLUS]));
331 printf("Server: %8d %8d %8d %8d %8d %8d %8d %8d\n",
332 nfsstats.srvrpccnt[NFSPROC_GETATTR]-lastst.srvrpccnt[NFSPROC_GETATTR],
333 nfsstats.srvrpccnt[NFSPROC_LOOKUP]-lastst.srvrpccnt[NFSPROC_LOOKUP],
334 nfsstats.srvrpccnt[NFSPROC_READLINK]-lastst.srvrpccnt[NFSPROC_READLINK],
335 nfsstats.srvrpccnt[NFSPROC_READ]-lastst.srvrpccnt[NFSPROC_READ],
336 nfsstats.srvrpccnt[NFSPROC_WRITE]-lastst.srvrpccnt[NFSPROC_WRITE],
337 nfsstats.srvrpccnt[NFSPROC_RENAME]-lastst.srvrpccnt[NFSPROC_RENAME],
338 nfsstats.srvrpccnt[NFSPROC_ACCESS]-lastst.srvrpccnt[NFSPROC_ACCESS],
339 (nfsstats.srvrpccnt[NFSPROC_READDIR]-lastst.srvrpccnt[NFSPROC_READDIR])
340 +(nfsstats.srvrpccnt[NFSPROC_READDIRPLUS]-lastst.srvrpccnt[NFSPROC_READDIRPLUS]));
341 lastst = nfsstats;
342 fflush(stdout);
343 oldmask = sigblock(sigmask(SIGALRM));
344 if (!signalled)
345 sigpause(0);
346 sigsetmask(oldmask);
347 signalled = 0;
348 (void)alarm(interval);
349 }
350 /*NOTREACHED*/
351 }
352
353 void
printhdr()354 printhdr()
355 {
356 printf(" %8.8s %8.8s %8.8s %8.8s %8.8s %8.8s %8.8s %8.8s\n",
357 "Getattr", "Lookup", "Readlink", "Read", "Write", "Rename",
358 "Access", "Readdir");
359 fflush(stdout);
360 }
361
362 /*
363 * Called if an interval expires before sidewaysintpr has completed a loop.
364 * Sets a flag to not wait for the alarm.
365 */
366 void
catchalarm()367 catchalarm()
368 {
369 signalled = 1;
370 }
371
372 void
usage()373 usage()
374 {
375 (void)fprintf(stderr,
376 "usage: nfsstat [-M core] [-N system] [-w interval]\n");
377 exit(1);
378 }
379