nfsstat.c revision 1.14
1 /* $NetBSD: nfsstat.c,v 1.14 1998/07/06 07:50:20 mrg Exp $ */ 2 3 /* 4 * Copyright (c) 1983, 1989, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Rick Macklem at The University of Guelph. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the University of 21 * California, Berkeley and its contributors. 22 * 4. Neither the name of the University nor the names of its contributors 23 * may be used to endorse or promote products derived from this software 24 * without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 */ 38 39 #include <sys/cdefs.h> 40 #ifndef lint 41 __COPYRIGHT("@(#) Copyright (c) 1983, 1989, 1993\n\ 42 The Regents of the University of California. All rights reserved.\n"); 43 #endif /* not lint */ 44 45 #ifndef lint 46 #if 0 47 static char sccsid[] = "from: @(#)nfsstat.c 8.1 (Berkeley) 6/6/93"; 48 #else 49 __RCSID("$NetBSD: nfsstat.c,v 1.14 1998/07/06 07:50:20 mrg Exp $"); 50 #endif 51 #endif /* not lint */ 52 53 #include <sys/param.h> 54 #include <sys/mount.h> 55 #include <sys/sysctl.h> 56 57 #include <nfs/rpcv2.h> 58 #include <nfs/nfsproto.h> 59 #include <nfs/nfs.h> 60 61 #include <ctype.h> 62 #include <err.h> 63 #include <errno.h> 64 #include <fcntl.h> 65 #include <kvm.h> 66 #include <limits.h> 67 #include <nlist.h> 68 #include <paths.h> 69 #include <signal.h> 70 #include <stdlib.h> 71 #include <stdio.h> 72 #include <string.h> 73 #include <unistd.h> 74 75 struct nlist nl[] = { 76 #define N_NFSSTAT 0 77 { "_nfsstats" }, 78 { "" }, 79 }; 80 kvm_t *kd; 81 82 void catchalarm __P((int)); 83 void intpr __P((u_long)); 84 int main __P((int, char **)); 85 void printhdr __P((void)); 86 void sidewaysintpr __P((u_int, u_long)); 87 void usage __P((void)); 88 89 int printall, clientinfo, serverinfo; 90 91 int 92 main(argc, argv) 93 int argc; 94 char **argv; 95 { 96 extern int optind; 97 extern char *optarg; 98 u_int interval; 99 int ch; 100 char *memf, *nlistf; 101 char errbuf[_POSIX2_LINE_MAX]; 102 gid_t egid = getegid(); 103 104 (void)setegid(getgid()); 105 interval = 0; 106 memf = nlistf = NULL; 107 printall = 1; 108 while ((ch = getopt(argc, argv, "M:N:w:cs")) != -1) 109 switch(ch) { 110 case 'M': 111 memf = optarg; 112 break; 113 case 'N': 114 nlistf = optarg; 115 break; 116 case 'w': 117 interval = atoi(optarg); 118 break; 119 case 's': 120 serverinfo = 1; 121 printall = 0; 122 break; 123 case 'c': 124 clientinfo = 1; 125 printall = 0; 126 break; 127 case '?': 128 default: 129 usage(); 130 } 131 argc -= optind; 132 argv += optind; 133 134 #define BACKWARD_COMPATIBILITY 135 #ifdef BACKWARD_COMPATIBILITY 136 if (*argv) { 137 interval = atoi(*argv); 138 if (*++argv) { 139 nlistf = *argv; 140 if (*++argv) 141 memf = *argv; 142 } 143 } 144 #endif 145 /* 146 * Discard setgid privileges. If not the running kernel, we toss 147 * them away totally so that bad guys can't print interesting stuff 148 * from kernel memory, otherwise switch back to kmem for the 149 * duration of the kvm_openfiles() call. 150 */ 151 if (nlistf != NULL || memf != NULL) 152 (void)setgid(getgid()); 153 else 154 (void)setegid(egid); 155 156 if ((kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, errbuf)) == 0) 157 errx(1, "kvm_openfiles: %s", errbuf); 158 159 /* get rid of it now anyway */ 160 if (nlistf == NULL && memf == NULL) 161 (void)setgid(getgid()); 162 163 if (kvm_nlist(kd, nl) != 0) 164 errx(1, "kvm_nlist: can't get names"); 165 166 if (interval) 167 sidewaysintpr(interval, nl[N_NFSSTAT].n_value); 168 else 169 intpr(nl[N_NFSSTAT].n_value); 170 exit(0); 171 } 172 173 /* 174 * Print a description of the nfs stats. 175 */ 176 void 177 intpr(nfsstataddr) 178 u_long nfsstataddr; 179 { 180 struct nfsstats nfsstats; 181 182 if (kvm_read(kd, (u_long)nfsstataddr, (char *)&nfsstats, 183 sizeof(struct nfsstats)) != sizeof(struct nfsstats)) 184 errx(1, "kvm_read failed"); 185 if (printall || clientinfo) { 186 printf("Client Info:\n"); 187 printf("Rpc Counts:\n"); 188 printf("%9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s\n", 189 "Getattr", "Setattr", "Lookup", "Readlink", "Read", 190 "Write", "Create", "Remove"); 191 printf("%9d %9d %9d %9d %9d %9d %9d %9d\n", 192 nfsstats.rpccnt[NFSPROC_GETATTR], 193 nfsstats.rpccnt[NFSPROC_SETATTR], 194 nfsstats.rpccnt[NFSPROC_LOOKUP], 195 nfsstats.rpccnt[NFSPROC_READLINK], 196 nfsstats.rpccnt[NFSPROC_READ], 197 nfsstats.rpccnt[NFSPROC_WRITE], 198 nfsstats.rpccnt[NFSPROC_CREATE], 199 nfsstats.rpccnt[NFSPROC_REMOVE]); 200 printf("%9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s\n", 201 "Rename", "Link", "Symlink", "Mkdir", "Rmdir", 202 "Readdir", "RdirPlus", "Access"); 203 printf("%9d %9d %9d %9d %9d %9d %9d %9d\n", 204 nfsstats.rpccnt[NFSPROC_RENAME], 205 nfsstats.rpccnt[NFSPROC_LINK], 206 nfsstats.rpccnt[NFSPROC_SYMLINK], 207 nfsstats.rpccnt[NFSPROC_MKDIR], 208 nfsstats.rpccnt[NFSPROC_RMDIR], 209 nfsstats.rpccnt[NFSPROC_READDIR], 210 nfsstats.rpccnt[NFSPROC_READDIRPLUS], 211 nfsstats.rpccnt[NFSPROC_ACCESS]); 212 printf("%9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s\n", 213 "Mknod", "Fsstat", "Fsinfo", "PathConf", "Commit", 214 "GLease", "Vacate", "Evict"); 215 printf("%9d %9d %9d %9d %9d %9d %9d %9d\n", 216 nfsstats.rpccnt[NFSPROC_MKNOD], 217 nfsstats.rpccnt[NFSPROC_FSSTAT], 218 nfsstats.rpccnt[NFSPROC_FSINFO], 219 nfsstats.rpccnt[NFSPROC_PATHCONF], 220 nfsstats.rpccnt[NFSPROC_COMMIT], 221 nfsstats.rpccnt[NQNFSPROC_GETLEASE], 222 nfsstats.rpccnt[NQNFSPROC_VACATED], 223 nfsstats.rpccnt[NQNFSPROC_EVICTED]); 224 printf("Rpc Info:\n"); 225 printf("%9.9s %9.9s %9.9s %9.9s %9.9s\n", 226 "TimedOut", "Invalid", "X Replies", "Retries", "Requests"); 227 printf("%9d %9d %9d %9d %9d\n", 228 nfsstats.rpctimeouts, 229 nfsstats.rpcinvalid, 230 nfsstats.rpcunexpected, 231 nfsstats.rpcretries, 232 nfsstats.rpcrequests); 233 printf("Cache Info:\n"); 234 printf("%9.9s %9.9s %9.9s %9.9s", 235 "Attr Hits", "Misses", "Lkup Hits", "Misses"); 236 printf(" %9.9s %9.9s %9.9s %9.9s\n", 237 "BioR Hits", "Misses", "BioW Hits", "Misses"); 238 printf("%9d %9d %9d %9d", 239 nfsstats.attrcache_hits, nfsstats.attrcache_misses, 240 nfsstats.lookupcache_hits, nfsstats.lookupcache_misses); 241 printf(" %9d %9d %9d %9d\n", 242 nfsstats.biocache_reads-nfsstats.read_bios, 243 nfsstats.read_bios, 244 nfsstats.biocache_writes-nfsstats.write_bios, 245 nfsstats.write_bios); 246 printf("%9.9s %9.9s %9.9s %9.9s", 247 "BioRLHits", "Misses", "BioD Hits", "Misses"); 248 printf(" %9.9s %9.9s\n", "DirE Hits", "Misses"); 249 printf("%9d %9d %9d %9d", 250 nfsstats.biocache_readlinks-nfsstats.readlink_bios, 251 nfsstats.readlink_bios, 252 nfsstats.biocache_readdirs-nfsstats.readdir_bios, 253 nfsstats.readdir_bios); 254 printf(" %9d %9d\n", 255 nfsstats.direofcache_hits, nfsstats.direofcache_misses); 256 } 257 if (printall || (clientinfo && serverinfo)){ 258 printf("\n"); 259 } 260 if (printall || serverinfo){ 261 printf("Server Info:\n"); 262 printf("%9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s\n", 263 "Getattr", "Setattr", "Lookup", "Readlink", "Read", 264 "Write", "Create", "Remove"); 265 printf("%9d %9d %9d %9d %9d %9d %9d %9d\n", 266 nfsstats.srvrpccnt[NFSPROC_GETATTR], 267 nfsstats.srvrpccnt[NFSPROC_SETATTR], 268 nfsstats.srvrpccnt[NFSPROC_LOOKUP], 269 nfsstats.srvrpccnt[NFSPROC_READLINK], 270 nfsstats.srvrpccnt[NFSPROC_READ], 271 nfsstats.srvrpccnt[NFSPROC_WRITE], 272 nfsstats.srvrpccnt[NFSPROC_CREATE], 273 nfsstats.srvrpccnt[NFSPROC_REMOVE]); 274 printf("%9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s\n", 275 "Rename", "Link", "Symlink", "Mkdir", "Rmdir", 276 "Readdir", "RdirPlus", "Access"); 277 printf("%9d %9d %9d %9d %9d %9d %9d %9d\n", 278 nfsstats.srvrpccnt[NFSPROC_RENAME], 279 nfsstats.srvrpccnt[NFSPROC_LINK], 280 nfsstats.srvrpccnt[NFSPROC_SYMLINK], 281 nfsstats.srvrpccnt[NFSPROC_MKDIR], 282 nfsstats.srvrpccnt[NFSPROC_RMDIR], 283 nfsstats.srvrpccnt[NFSPROC_READDIR], 284 nfsstats.srvrpccnt[NFSPROC_READDIRPLUS], 285 nfsstats.srvrpccnt[NFSPROC_ACCESS]); 286 printf("%9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s\n", 287 "Mknod", "Fsstat", "Fsinfo", "PathConf", "Commit", 288 "GLease", "Vacate", "Evict"); 289 printf("%9d %9d %9d %9d %9d %9d %9d %9d\n", 290 nfsstats.srvrpccnt[NFSPROC_MKNOD], 291 nfsstats.srvrpccnt[NFSPROC_FSSTAT], 292 nfsstats.srvrpccnt[NFSPROC_FSINFO], 293 nfsstats.srvrpccnt[NFSPROC_PATHCONF], 294 nfsstats.srvrpccnt[NFSPROC_COMMIT], 295 nfsstats.srvrpccnt[NQNFSPROC_GETLEASE], 296 nfsstats.srvrpccnt[NQNFSPROC_VACATED], 297 nfsstats.srvrpccnt[NQNFSPROC_EVICTED]); 298 printf("Server Ret-Failed\n"); 299 printf("%17d\n", nfsstats.srvrpc_errs); 300 printf("Server Faults\n"); 301 printf("%13d\n", nfsstats.srv_errs); 302 printf("Server Cache Stats:\n"); 303 printf("%9.9s %9.9s %9.9s %9.9s\n", 304 "Inprog", "Idem", "Non-idem", "Misses"); 305 printf("%9d %9d %9d %9d\n", 306 nfsstats.srvcache_inproghits, 307 nfsstats.srvcache_idemdonehits, 308 nfsstats.srvcache_nonidemdonehits, 309 nfsstats.srvcache_misses); 310 printf("Server Lease Stats:\n"); 311 printf("%9.9s %9.9s %9.9s\n", 312 "Leases", "PeakL", "GLeases"); 313 printf("%9d %9d %9d\n", 314 nfsstats.srvnqnfs_leases, 315 nfsstats.srvnqnfs_maxleases, 316 nfsstats.srvnqnfs_getleases); 317 printf("Server Write Gathering:\n"); 318 printf("%9.9s %9.9s %9.9s\n", 319 "WriteOps", "WriteRPC", "Opsaved"); 320 printf("%9d %9d %9d\n", 321 nfsstats.srvvop_writes, 322 nfsstats.srvrpccnt[NFSPROC_WRITE], 323 nfsstats.srvrpccnt[NFSPROC_WRITE] - nfsstats.srvvop_writes); 324 } 325 } 326 327 u_char signalled; /* set if alarm goes off "early" */ 328 329 /* 330 * Print a running summary of nfs statistics. 331 * Repeat display every interval seconds, showing statistics 332 * collected over that interval. Assumes that interval is non-zero. 333 * First line printed at top of screen is always cumulative. 334 */ 335 void 336 sidewaysintpr(interval, off) 337 u_int interval; 338 u_long off; 339 { 340 struct nfsstats nfsstats, lastst; 341 int hdrcnt, oldmask; 342 343 (void)signal(SIGALRM, catchalarm); 344 signalled = 0; 345 (void)alarm(interval); 346 memset((caddr_t)&lastst, 0, sizeof(lastst)); 347 348 for (hdrcnt = 1;;) { 349 if (!--hdrcnt) { 350 printhdr(); 351 hdrcnt = 20; 352 } 353 if (kvm_read(kd, off, (char *)&nfsstats, sizeof(nfsstats)) 354 != sizeof(nfsstats)) 355 errx(1, "kvm_read failed"); 356 if (printall || clientinfo) 357 printf("Client: %8d %8d %8d %8d %8d %8d %8d %8d\n", 358 nfsstats.rpccnt[NFSPROC_GETATTR] - 359 lastst.rpccnt[NFSPROC_GETATTR], 360 nfsstats.rpccnt[NFSPROC_LOOKUP] - 361 lastst.rpccnt[NFSPROC_LOOKUP], 362 nfsstats.rpccnt[NFSPROC_READLINK] - 363 lastst.rpccnt[NFSPROC_READLINK], 364 nfsstats.rpccnt[NFSPROC_READ] - 365 lastst.rpccnt[NFSPROC_READ], 366 nfsstats.rpccnt[NFSPROC_WRITE] - 367 lastst.rpccnt[NFSPROC_WRITE], 368 nfsstats.rpccnt[NFSPROC_RENAME] - 369 lastst.rpccnt[NFSPROC_RENAME], 370 nfsstats.rpccnt[NFSPROC_ACCESS] - 371 lastst.rpccnt[NFSPROC_ACCESS], 372 (nfsstats.rpccnt[NFSPROC_READDIR] - 373 lastst.rpccnt[NFSPROC_READDIR]) + 374 (nfsstats.rpccnt[NFSPROC_READDIRPLUS] - 375 lastst.rpccnt[NFSPROC_READDIRPLUS])); 376 if (printall || serverinfo) 377 printf("Server: %8d %8d %8d %8d %8d %8d %8d %8d\n", 378 nfsstats.srvrpccnt[NFSPROC_GETATTR] - 379 lastst.srvrpccnt[NFSPROC_GETATTR], 380 nfsstats.srvrpccnt[NFSPROC_LOOKUP] - 381 lastst.srvrpccnt[NFSPROC_LOOKUP], 382 nfsstats.srvrpccnt[NFSPROC_READLINK] - 383 lastst.srvrpccnt[NFSPROC_READLINK], 384 nfsstats.srvrpccnt[NFSPROC_READ] - 385 lastst.srvrpccnt[NFSPROC_READ], 386 nfsstats.srvrpccnt[NFSPROC_WRITE] - 387 lastst.srvrpccnt[NFSPROC_WRITE], 388 nfsstats.srvrpccnt[NFSPROC_RENAME] - 389 lastst.srvrpccnt[NFSPROC_RENAME], 390 nfsstats.srvrpccnt[NFSPROC_ACCESS] - 391 lastst.srvrpccnt[NFSPROC_ACCESS], 392 (nfsstats.srvrpccnt[NFSPROC_READDIR] - 393 lastst.srvrpccnt[NFSPROC_READDIR]) + 394 (nfsstats.srvrpccnt[NFSPROC_READDIRPLUS] - 395 lastst.srvrpccnt[NFSPROC_READDIRPLUS])); 396 lastst = nfsstats; 397 fflush(stdout); 398 oldmask = sigblock(sigmask(SIGALRM)); 399 if (!signalled) 400 sigpause(0); 401 sigsetmask(oldmask); 402 signalled = 0; 403 (void)alarm(interval); 404 } 405 /*NOTREACHED*/ 406 } 407 408 void 409 printhdr() 410 { 411 412 printf(" %8.8s %8.8s %8.8s %8.8s %8.8s %8.8s %8.8s %8.8s\n", 413 "Getattr", "Lookup", "Readlink", "Read", "Write", "Rename", 414 "Access", "Readdir"); 415 fflush(stdout); 416 } 417 418 /* 419 * Called if an interval expires before sidewaysintpr has completed a loop. 420 * Sets a flag to not wait for the alarm. 421 */ 422 void 423 catchalarm(dummy) 424 int dummy; 425 { 426 427 signalled = 1; 428 } 429 430 void 431 usage() 432 { 433 434 (void)fprintf(stderr, 435 "usage: nfsstat [-cs] [-M core] [-N system] [-w interval]\n"); 436 exit(1); 437 } 438
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