nfsstat.c revision 1.15
1 /* $NetBSD: nfsstat.c,v 1.15 2000/04/14 06:11:09 simonb 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 1.15 2000/04/14 06:11:09 simonb 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 u_int interval; 97 int ch; 98 char *memf, *nlistf; 99 char errbuf[_POSIX2_LINE_MAX]; 100 gid_t egid = getegid(); 101 102 (void)setegid(getgid()); 103 interval = 0; 104 memf = nlistf = NULL; 105 printall = 1; 106 while ((ch = getopt(argc, argv, "M:N:w:cs")) != -1) 107 switch(ch) { 108 case 'M': 109 memf = optarg; 110 break; 111 case 'N': 112 nlistf = optarg; 113 break; 114 case 'w': 115 interval = atoi(optarg); 116 break; 117 case 's': 118 serverinfo = 1; 119 printall = 0; 120 break; 121 case 'c': 122 clientinfo = 1; 123 printall = 0; 124 break; 125 case '?': 126 default: 127 usage(); 128 } 129 argc -= optind; 130 argv += optind; 131 132 #define BACKWARD_COMPATIBILITY 133 #ifdef BACKWARD_COMPATIBILITY 134 if (*argv) { 135 interval = atoi(*argv); 136 if (*++argv) { 137 nlistf = *argv; 138 if (*++argv) 139 memf = *argv; 140 } 141 } 142 #endif 143 /* 144 * Discard setgid privileges. If not the running kernel, we toss 145 * them away totally so that bad guys can't print interesting stuff 146 * from kernel memory, otherwise switch back to kmem for the 147 * duration of the kvm_openfiles() call. 148 */ 149 if (nlistf != NULL || memf != NULL) 150 (void)setgid(getgid()); 151 else 152 (void)setegid(egid); 153 154 if ((kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, errbuf)) == 0) 155 errx(1, "kvm_openfiles: %s", errbuf); 156 157 /* get rid of it now anyway */ 158 if (nlistf == NULL && memf == NULL) 159 (void)setgid(getgid()); 160 161 if (kvm_nlist(kd, nl) != 0) 162 errx(1, "kvm_nlist: can't get names"); 163 164 if (interval) 165 sidewaysintpr(interval, nl[N_NFSSTAT].n_value); 166 else 167 intpr(nl[N_NFSSTAT].n_value); 168 exit(0); 169 } 170 171 /* 172 * Print a description of the nfs stats. 173 */ 174 void 175 intpr(nfsstataddr) 176 u_long nfsstataddr; 177 { 178 struct nfsstats nfsstats; 179 180 if (kvm_read(kd, (u_long)nfsstataddr, (char *)&nfsstats, 181 sizeof(struct nfsstats)) != sizeof(struct nfsstats)) 182 errx(1, "kvm_read failed"); 183 if (printall || clientinfo) { 184 printf("Client Info:\n"); 185 printf("Rpc Counts:\n"); 186 printf("%9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s\n", 187 "Getattr", "Setattr", "Lookup", "Readlink", "Read", 188 "Write", "Create", "Remove"); 189 printf("%9d %9d %9d %9d %9d %9d %9d %9d\n", 190 nfsstats.rpccnt[NFSPROC_GETATTR], 191 nfsstats.rpccnt[NFSPROC_SETATTR], 192 nfsstats.rpccnt[NFSPROC_LOOKUP], 193 nfsstats.rpccnt[NFSPROC_READLINK], 194 nfsstats.rpccnt[NFSPROC_READ], 195 nfsstats.rpccnt[NFSPROC_WRITE], 196 nfsstats.rpccnt[NFSPROC_CREATE], 197 nfsstats.rpccnt[NFSPROC_REMOVE]); 198 printf("%9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s\n", 199 "Rename", "Link", "Symlink", "Mkdir", "Rmdir", 200 "Readdir", "RdirPlus", "Access"); 201 printf("%9d %9d %9d %9d %9d %9d %9d %9d\n", 202 nfsstats.rpccnt[NFSPROC_RENAME], 203 nfsstats.rpccnt[NFSPROC_LINK], 204 nfsstats.rpccnt[NFSPROC_SYMLINK], 205 nfsstats.rpccnt[NFSPROC_MKDIR], 206 nfsstats.rpccnt[NFSPROC_RMDIR], 207 nfsstats.rpccnt[NFSPROC_READDIR], 208 nfsstats.rpccnt[NFSPROC_READDIRPLUS], 209 nfsstats.rpccnt[NFSPROC_ACCESS]); 210 printf("%9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s\n", 211 "Mknod", "Fsstat", "Fsinfo", "PathConf", "Commit", 212 "GLease", "Vacate", "Evict"); 213 printf("%9d %9d %9d %9d %9d %9d %9d %9d\n", 214 nfsstats.rpccnt[NFSPROC_MKNOD], 215 nfsstats.rpccnt[NFSPROC_FSSTAT], 216 nfsstats.rpccnt[NFSPROC_FSINFO], 217 nfsstats.rpccnt[NFSPROC_PATHCONF], 218 nfsstats.rpccnt[NFSPROC_COMMIT], 219 nfsstats.rpccnt[NQNFSPROC_GETLEASE], 220 nfsstats.rpccnt[NQNFSPROC_VACATED], 221 nfsstats.rpccnt[NQNFSPROC_EVICTED]); 222 printf("Rpc Info:\n"); 223 printf("%9.9s %9.9s %9.9s %9.9s %9.9s\n", 224 "TimedOut", "Invalid", "X Replies", "Retries", "Requests"); 225 printf("%9d %9d %9d %9d %9d\n", 226 nfsstats.rpctimeouts, 227 nfsstats.rpcinvalid, 228 nfsstats.rpcunexpected, 229 nfsstats.rpcretries, 230 nfsstats.rpcrequests); 231 printf("Cache Info:\n"); 232 printf("%9.9s %9.9s %9.9s %9.9s", 233 "Attr Hits", "Misses", "Lkup Hits", "Misses"); 234 printf(" %9.9s %9.9s %9.9s %9.9s\n", 235 "BioR Hits", "Misses", "BioW Hits", "Misses"); 236 printf("%9d %9d %9d %9d", 237 nfsstats.attrcache_hits, nfsstats.attrcache_misses, 238 nfsstats.lookupcache_hits, nfsstats.lookupcache_misses); 239 printf(" %9d %9d %9d %9d\n", 240 nfsstats.biocache_reads-nfsstats.read_bios, 241 nfsstats.read_bios, 242 nfsstats.biocache_writes-nfsstats.write_bios, 243 nfsstats.write_bios); 244 printf("%9.9s %9.9s %9.9s %9.9s", 245 "BioRLHits", "Misses", "BioD Hits", "Misses"); 246 printf(" %9.9s %9.9s\n", "DirE Hits", "Misses"); 247 printf("%9d %9d %9d %9d", 248 nfsstats.biocache_readlinks-nfsstats.readlink_bios, 249 nfsstats.readlink_bios, 250 nfsstats.biocache_readdirs-nfsstats.readdir_bios, 251 nfsstats.readdir_bios); 252 printf(" %9d %9d\n", 253 nfsstats.direofcache_hits, nfsstats.direofcache_misses); 254 } 255 if (printall || (clientinfo && serverinfo)){ 256 printf("\n"); 257 } 258 if (printall || serverinfo){ 259 printf("Server Info:\n"); 260 printf("%9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s\n", 261 "Getattr", "Setattr", "Lookup", "Readlink", "Read", 262 "Write", "Create", "Remove"); 263 printf("%9d %9d %9d %9d %9d %9d %9d %9d\n", 264 nfsstats.srvrpccnt[NFSPROC_GETATTR], 265 nfsstats.srvrpccnt[NFSPROC_SETATTR], 266 nfsstats.srvrpccnt[NFSPROC_LOOKUP], 267 nfsstats.srvrpccnt[NFSPROC_READLINK], 268 nfsstats.srvrpccnt[NFSPROC_READ], 269 nfsstats.srvrpccnt[NFSPROC_WRITE], 270 nfsstats.srvrpccnt[NFSPROC_CREATE], 271 nfsstats.srvrpccnt[NFSPROC_REMOVE]); 272 printf("%9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s\n", 273 "Rename", "Link", "Symlink", "Mkdir", "Rmdir", 274 "Readdir", "RdirPlus", "Access"); 275 printf("%9d %9d %9d %9d %9d %9d %9d %9d\n", 276 nfsstats.srvrpccnt[NFSPROC_RENAME], 277 nfsstats.srvrpccnt[NFSPROC_LINK], 278 nfsstats.srvrpccnt[NFSPROC_SYMLINK], 279 nfsstats.srvrpccnt[NFSPROC_MKDIR], 280 nfsstats.srvrpccnt[NFSPROC_RMDIR], 281 nfsstats.srvrpccnt[NFSPROC_READDIR], 282 nfsstats.srvrpccnt[NFSPROC_READDIRPLUS], 283 nfsstats.srvrpccnt[NFSPROC_ACCESS]); 284 printf("%9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s\n", 285 "Mknod", "Fsstat", "Fsinfo", "PathConf", "Commit", 286 "GLease", "Vacate", "Evict"); 287 printf("%9d %9d %9d %9d %9d %9d %9d %9d\n", 288 nfsstats.srvrpccnt[NFSPROC_MKNOD], 289 nfsstats.srvrpccnt[NFSPROC_FSSTAT], 290 nfsstats.srvrpccnt[NFSPROC_FSINFO], 291 nfsstats.srvrpccnt[NFSPROC_PATHCONF], 292 nfsstats.srvrpccnt[NFSPROC_COMMIT], 293 nfsstats.srvrpccnt[NQNFSPROC_GETLEASE], 294 nfsstats.srvrpccnt[NQNFSPROC_VACATED], 295 nfsstats.srvrpccnt[NQNFSPROC_EVICTED]); 296 printf("Server Ret-Failed\n"); 297 printf("%17d\n", nfsstats.srvrpc_errs); 298 printf("Server Faults\n"); 299 printf("%13d\n", nfsstats.srv_errs); 300 printf("Server Cache Stats:\n"); 301 printf("%9.9s %9.9s %9.9s %9.9s\n", 302 "Inprog", "Idem", "Non-idem", "Misses"); 303 printf("%9d %9d %9d %9d\n", 304 nfsstats.srvcache_inproghits, 305 nfsstats.srvcache_idemdonehits, 306 nfsstats.srvcache_nonidemdonehits, 307 nfsstats.srvcache_misses); 308 printf("Server Lease Stats:\n"); 309 printf("%9.9s %9.9s %9.9s\n", 310 "Leases", "PeakL", "GLeases"); 311 printf("%9d %9d %9d\n", 312 nfsstats.srvnqnfs_leases, 313 nfsstats.srvnqnfs_maxleases, 314 nfsstats.srvnqnfs_getleases); 315 printf("Server Write Gathering:\n"); 316 printf("%9.9s %9.9s %9.9s\n", 317 "WriteOps", "WriteRPC", "Opsaved"); 318 printf("%9d %9d %9d\n", 319 nfsstats.srvvop_writes, 320 nfsstats.srvrpccnt[NFSPROC_WRITE], 321 nfsstats.srvrpccnt[NFSPROC_WRITE] - nfsstats.srvvop_writes); 322 } 323 } 324 325 u_char signalled; /* set if alarm goes off "early" */ 326 327 /* 328 * Print a running summary of nfs statistics. 329 * Repeat display every interval seconds, showing statistics 330 * collected over that interval. Assumes that interval is non-zero. 331 * First line printed at top of screen is always cumulative. 332 */ 333 void 334 sidewaysintpr(interval, off) 335 u_int interval; 336 u_long off; 337 { 338 struct nfsstats nfsstats, lastst; 339 int hdrcnt, oldmask; 340 341 (void)signal(SIGALRM, catchalarm); 342 signalled = 0; 343 (void)alarm(interval); 344 memset((caddr_t)&lastst, 0, sizeof(lastst)); 345 346 for (hdrcnt = 1;;) { 347 if (!--hdrcnt) { 348 printhdr(); 349 hdrcnt = 20; 350 } 351 if (kvm_read(kd, off, (char *)&nfsstats, sizeof(nfsstats)) 352 != sizeof(nfsstats)) 353 errx(1, "kvm_read failed"); 354 if (printall || clientinfo) 355 printf("Client: %8d %8d %8d %8d %8d %8d %8d %8d\n", 356 nfsstats.rpccnt[NFSPROC_GETATTR] - 357 lastst.rpccnt[NFSPROC_GETATTR], 358 nfsstats.rpccnt[NFSPROC_LOOKUP] - 359 lastst.rpccnt[NFSPROC_LOOKUP], 360 nfsstats.rpccnt[NFSPROC_READLINK] - 361 lastst.rpccnt[NFSPROC_READLINK], 362 nfsstats.rpccnt[NFSPROC_READ] - 363 lastst.rpccnt[NFSPROC_READ], 364 nfsstats.rpccnt[NFSPROC_WRITE] - 365 lastst.rpccnt[NFSPROC_WRITE], 366 nfsstats.rpccnt[NFSPROC_RENAME] - 367 lastst.rpccnt[NFSPROC_RENAME], 368 nfsstats.rpccnt[NFSPROC_ACCESS] - 369 lastst.rpccnt[NFSPROC_ACCESS], 370 (nfsstats.rpccnt[NFSPROC_READDIR] - 371 lastst.rpccnt[NFSPROC_READDIR]) + 372 (nfsstats.rpccnt[NFSPROC_READDIRPLUS] - 373 lastst.rpccnt[NFSPROC_READDIRPLUS])); 374 if (printall || serverinfo) 375 printf("Server: %8d %8d %8d %8d %8d %8d %8d %8d\n", 376 nfsstats.srvrpccnt[NFSPROC_GETATTR] - 377 lastst.srvrpccnt[NFSPROC_GETATTR], 378 nfsstats.srvrpccnt[NFSPROC_LOOKUP] - 379 lastst.srvrpccnt[NFSPROC_LOOKUP], 380 nfsstats.srvrpccnt[NFSPROC_READLINK] - 381 lastst.srvrpccnt[NFSPROC_READLINK], 382 nfsstats.srvrpccnt[NFSPROC_READ] - 383 lastst.srvrpccnt[NFSPROC_READ], 384 nfsstats.srvrpccnt[NFSPROC_WRITE] - 385 lastst.srvrpccnt[NFSPROC_WRITE], 386 nfsstats.srvrpccnt[NFSPROC_RENAME] - 387 lastst.srvrpccnt[NFSPROC_RENAME], 388 nfsstats.srvrpccnt[NFSPROC_ACCESS] - 389 lastst.srvrpccnt[NFSPROC_ACCESS], 390 (nfsstats.srvrpccnt[NFSPROC_READDIR] - 391 lastst.srvrpccnt[NFSPROC_READDIR]) + 392 (nfsstats.srvrpccnt[NFSPROC_READDIRPLUS] - 393 lastst.srvrpccnt[NFSPROC_READDIRPLUS])); 394 lastst = nfsstats; 395 fflush(stdout); 396 oldmask = sigblock(sigmask(SIGALRM)); 397 if (!signalled) 398 sigpause(0); 399 sigsetmask(oldmask); 400 signalled = 0; 401 (void)alarm(interval); 402 } 403 /*NOTREACHED*/ 404 } 405 406 void 407 printhdr() 408 { 409 410 printf(" %8.8s %8.8s %8.8s %8.8s %8.8s %8.8s %8.8s %8.8s\n", 411 "Getattr", "Lookup", "Readlink", "Read", "Write", "Rename", 412 "Access", "Readdir"); 413 fflush(stdout); 414 } 415 416 /* 417 * Called if an interval expires before sidewaysintpr has completed a loop. 418 * Sets a flag to not wait for the alarm. 419 */ 420 void 421 catchalarm(dummy) 422 int dummy; 423 { 424 425 signalled = 1; 426 } 427 428 void 429 usage() 430 { 431 432 (void)fprintf(stderr, 433 "usage: nfsstat [-cs] [-M core] [-N system] [-w interval]\n"); 434 exit(1); 435 } 436
Indexes created Wed Oct 15 14:09:57 GMT 2025