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 38 static 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 44 #if 0 45 static char sccsid[] = "@(#)nfsstat.c 8.2 (Berkeley) 3/31/95"; 46 #endif 47 static const char rcsid[] = 48 "$FreeBSD$"; 49 #endif /* not lint */ 50 51 #include <sys/param.h> 52 #include <sys/mount.h> 53 #include <sys/time.h> 54 #include <sys/sysctl.h> 55 #include <nfs/rpcv2.h> 56 #include <nfs/nfsproto.h> 57 #include <nfs/nfs.h> 58 #include <signal.h> 59 #include <fcntl.h> 60 #include <ctype.h> 61 #include <errno.h> 62 #include <kvm.h> 63 #include <nlist.h> 64 #include <unistd.h> 65 #include <stdio.h> 66 #include <stdlib.h> 67 #include <string.h> 68 #include <paths.h> 69 #include <err.h> 70 71 struct nlist nl[] = { 72 #define N_NFSSTAT 0 73 { "_nfsstats" }, 74 "", 75 }; 76 kvm_t *kd; 77 78 static int deadkernel = 0; 79 static int widemode = 0; 80 81 void intpr __P((int, int)); 82 void printhdr __P((int, int)); 83 void sidewaysintpr __P((u_int, int, int)); 84 void usage __P((void)); 85 char *sperc1 __P((int, int)); 86 char *sperc2 __P((int, int)); 87 88 #define DELTA(field) (nfsstats.field - lastst.field) 89 90 main(argc, argv) 91 int argc; 92 char **argv; 93 { 94 u_int interval; 95 int clientOnly = -1; 96 int serverOnly = -1; 97 int ch; 98 char *memf, *nlistf; 99 char errbuf[80]; 100 101 interval = 0; 102 memf = nlistf = NULL; 103 while ((ch = getopt(argc, argv, "csWM:N:w:")) != -1) 104 switch(ch) { 105 case 'M': 106 memf = optarg; 107 break; 108 case 'N': 109 nlistf = optarg; 110 break; 111 case 'W': 112 widemode = 1; 113 break; 114 case 'w': 115 interval = atoi(optarg); 116 break; 117 case 'c': 118 clientOnly = 1; 119 if (serverOnly < 0) 120 serverOnly = 0; 121 break; 122 case 's': 123 serverOnly = 1; 124 if (clientOnly < 0) 125 clientOnly = 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 so that bad 147 * guys can't print interesting stuff from kernel memory. 148 */ 149 if (nlistf != NULL || memf != NULL) { 150 setgid(getgid()); 151 deadkernel = 1; 152 153 if ((kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, 154 errbuf)) == 0) { 155 errx(1, "kvm_openfiles: %s", errbuf); 156 } 157 if (kvm_nlist(kd, nl) != 0) { 158 errx(1, "kvm_nlist: can't get names"); 159 } 160 } 161 162 if (interval) 163 sidewaysintpr(interval, clientOnly, serverOnly); 164 else 165 intpr(clientOnly, serverOnly); 166 exit(0); 167 } 168 169 /* 170 * Read the nfs stats using sysctl(3) for live kernels, or kvm_read 171 * for dead ones. 172 */ 173 void 174 readstats(stp) 175 struct nfsstats *stp; 176 { 177 if(deadkernel) { 178 if(kvm_read(kd, (u_long)nl[N_NFSSTAT].n_value, stp, 179 sizeof *stp) < 0) { 180 err(1, "kvm_read"); 181 } 182 } else { 183 int name[3]; 184 size_t buflen = sizeof *stp; 185 struct vfsconf vfc; 186 187 if (getvfsbyname("nfs", &vfc) < 0) 188 err(1, "getvfsbyname: NFS not compiled into kernel"); 189 name[0] = CTL_VFS; 190 name[1] = vfc.vfc_typenum; 191 name[2] = NFS_NFSSTATS; 192 if (sysctl(name, 3, stp, &buflen, (void *)0, (size_t)0) < 0) { 193 err(1, "sysctl"); 194 } 195 } 196 } 197 198 /* 199 * Print a description of the nfs stats. 200 */ 201 void 202 intpr(int clientOnly, int serverOnly) 203 { 204 struct nfsstats nfsstats; 205 206 readstats(&nfsstats); 207 208 if (clientOnly) { 209 printf("Client Info:\n"); 210 printf("Rpc Counts:\n"); 211 printf("%9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s\n", 212 "Getattr", "Setattr", "Lookup", "Readlink", "Read", 213 "Write", "Create", "Remove"); 214 printf("%9d %9d %9d %9d %9d %9d %9d %9d\n", 215 nfsstats.rpccnt[NFSPROC_GETATTR], 216 nfsstats.rpccnt[NFSPROC_SETATTR], 217 nfsstats.rpccnt[NFSPROC_LOOKUP], 218 nfsstats.rpccnt[NFSPROC_READLINK], 219 nfsstats.rpccnt[NFSPROC_READ], 220 nfsstats.rpccnt[NFSPROC_WRITE], 221 nfsstats.rpccnt[NFSPROC_CREATE], 222 nfsstats.rpccnt[NFSPROC_REMOVE]); 223 printf("%9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s\n", 224 "Rename", "Link", "Symlink", "Mkdir", "Rmdir", 225 "Readdir", "RdirPlus", "Access"); 226 printf("%9d %9d %9d %9d %9d %9d %9d %9d\n", 227 nfsstats.rpccnt[NFSPROC_RENAME], 228 nfsstats.rpccnt[NFSPROC_LINK], 229 nfsstats.rpccnt[NFSPROC_SYMLINK], 230 nfsstats.rpccnt[NFSPROC_MKDIR], 231 nfsstats.rpccnt[NFSPROC_RMDIR], 232 nfsstats.rpccnt[NFSPROC_READDIR], 233 nfsstats.rpccnt[NFSPROC_READDIRPLUS], 234 nfsstats.rpccnt[NFSPROC_ACCESS]); 235 printf("%9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s\n", 236 "Mknod", "Fsstat", "Fsinfo", "PathConf", "Commit", 237 "GLease", "Vacate", "Evict"); 238 printf("%9d %9d %9d %9d %9d %9d %9d %9d\n", 239 nfsstats.rpccnt[NFSPROC_MKNOD], 240 nfsstats.rpccnt[NFSPROC_FSSTAT], 241 nfsstats.rpccnt[NFSPROC_FSINFO], 242 nfsstats.rpccnt[NFSPROC_PATHCONF], 243 nfsstats.rpccnt[NFSPROC_COMMIT], 244 nfsstats.rpccnt[NQNFSPROC_GETLEASE], 245 nfsstats.rpccnt[NQNFSPROC_VACATED], 246 nfsstats.rpccnt[NQNFSPROC_EVICTED]); 247 printf("Rpc Info:\n"); 248 printf("%9.9s %9.9s %9.9s %9.9s %9.9s\n", 249 "TimedOut", "Invalid", "X Replies", "Retries", 250 "Requests"); 251 printf("%9d %9d %9d %9d %9d\n", 252 nfsstats.rpctimeouts, 253 nfsstats.rpcinvalid, 254 nfsstats.rpcunexpected, 255 nfsstats.rpcretries, 256 nfsstats.rpcrequests); 257 printf("Cache Info:\n"); 258 printf("%9.9s %9.9s %9.9s %9.9s", 259 "Attr Hits", "Misses", "Lkup Hits", "Misses"); 260 printf(" %9.9s %9.9s %9.9s %9.9s\n", 261 "BioR Hits", "Misses", "BioW Hits", "Misses"); 262 printf("%9d %9d %9d %9d", 263 nfsstats.attrcache_hits, nfsstats.attrcache_misses, 264 nfsstats.lookupcache_hits, nfsstats.lookupcache_misses); 265 printf(" %9d %9d %9d %9d\n", 266 nfsstats.biocache_reads-nfsstats.read_bios, 267 nfsstats.read_bios, 268 nfsstats.biocache_writes-nfsstats.write_bios, 269 nfsstats.write_bios); 270 printf("%9.9s %9.9s %9.9s %9.9s", 271 "BioRLHits", "Misses", "BioD Hits", "Misses"); 272 printf(" %9.9s %9.9s\n", "DirE Hits", "Misses"); 273 printf("%9d %9d %9d %9d", 274 nfsstats.biocache_readlinks-nfsstats.readlink_bios, 275 nfsstats.readlink_bios, 276 nfsstats.biocache_readdirs-nfsstats.readdir_bios, 277 nfsstats.readdir_bios); 278 printf(" %9d %9d\n", 279 nfsstats.direofcache_hits, nfsstats.direofcache_misses); 280 } 281 if (serverOnly) { 282 printf("\nServer Info:\n"); 283 printf("%9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s\n", 284 "Getattr", "Setattr", "Lookup", "Readlink", "Read", 285 "Write", "Create", "Remove"); 286 printf("%9d %9d %9d %9d %9d %9d %9d %9d\n", 287 nfsstats.srvrpccnt[NFSPROC_GETATTR], 288 nfsstats.srvrpccnt[NFSPROC_SETATTR], 289 nfsstats.srvrpccnt[NFSPROC_LOOKUP], 290 nfsstats.srvrpccnt[NFSPROC_READLINK], 291 nfsstats.srvrpccnt[NFSPROC_READ], 292 nfsstats.srvrpccnt[NFSPROC_WRITE], 293 nfsstats.srvrpccnt[NFSPROC_CREATE], 294 nfsstats.srvrpccnt[NFSPROC_REMOVE]); 295 printf("%9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s\n", 296 "Rename", "Link", "Symlink", "Mkdir", "Rmdir", 297 "Readdir", "RdirPlus", "Access"); 298 printf("%9d %9d %9d %9d %9d %9d %9d %9d\n", 299 nfsstats.srvrpccnt[NFSPROC_RENAME], 300 nfsstats.srvrpccnt[NFSPROC_LINK], 301 nfsstats.srvrpccnt[NFSPROC_SYMLINK], 302 nfsstats.srvrpccnt[NFSPROC_MKDIR], 303 nfsstats.srvrpccnt[NFSPROC_RMDIR], 304 nfsstats.srvrpccnt[NFSPROC_READDIR], 305 nfsstats.srvrpccnt[NFSPROC_READDIRPLUS], 306 nfsstats.srvrpccnt[NFSPROC_ACCESS]); 307 printf("%9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s\n", 308 "Mknod", "Fsstat", "Fsinfo", "PathConf", "Commit", 309 "GLease", "Vacate", "Evict"); 310 printf("%9d %9d %9d %9d %9d %9d %9d %9d\n", 311 nfsstats.srvrpccnt[NFSPROC_MKNOD], 312 nfsstats.srvrpccnt[NFSPROC_FSSTAT], 313 nfsstats.srvrpccnt[NFSPROC_FSINFO], 314 nfsstats.srvrpccnt[NFSPROC_PATHCONF], 315 nfsstats.srvrpccnt[NFSPROC_COMMIT], 316 nfsstats.srvrpccnt[NQNFSPROC_GETLEASE], 317 nfsstats.srvrpccnt[NQNFSPROC_VACATED], 318 nfsstats.srvrpccnt[NQNFSPROC_EVICTED]); 319 printf("Server Ret-Failed\n"); 320 printf("%17d\n", nfsstats.srvrpc_errs); 321 printf("Server Faults\n"); 322 printf("%13d\n", nfsstats.srv_errs); 323 printf("Server Cache Stats:\n"); 324 printf("%9.9s %9.9s %9.9s %9.9s\n", 325 "Inprog", "Idem", "Non-idem", "Misses"); 326 printf("%9d %9d %9d %9d\n", 327 nfsstats.srvcache_inproghits, 328 nfsstats.srvcache_idemdonehits, 329 nfsstats.srvcache_nonidemdonehits, 330 nfsstats.srvcache_misses); 331 printf("Server Lease Stats:\n"); 332 printf("%9.9s %9.9s %9.9s\n", 333 "Leases", "PeakL", "GLeases"); 334 printf("%9d %9d %9d\n", 335 nfsstats.srvnqnfs_leases, 336 nfsstats.srvnqnfs_maxleases, 337 nfsstats.srvnqnfs_getleases); 338 printf("Server Write Gathering:\n"); 339 printf("%9.9s %9.9s %9.9s\n", 340 "WriteOps", "WriteRPC", "Opsaved"); 341 printf("%9d %9d %9d\n", 342 nfsstats.srvvop_writes, 343 nfsstats.srvrpccnt[NFSPROC_WRITE], 344 nfsstats.srvrpccnt[NFSPROC_WRITE] - 345 nfsstats.srvvop_writes); 346 } 347 } 348 349 u_char signalled; /* set if alarm goes off "early" */ 350 351 /* 352 * Print a running summary of nfs statistics. 353 * Repeat display every interval seconds, showing statistics 354 * collected over that interval. Assumes that interval is non-zero. 355 * First line printed at top of screen is always cumulative. 356 */ 357 void 358 sidewaysintpr(u_int interval, int clientOnly, int serverOnly) 359 { 360 struct nfsstats nfsstats, lastst; 361 int hdrcnt = 1; 362 363 readstats(&lastst); 364 sleep(interval); 365 366 for (;;) { 367 readstats(&nfsstats); 368 369 if (--hdrcnt == 0) { 370 printhdr(clientOnly, serverOnly); 371 if (clientOnly && serverOnly) 372 hdrcnt = 10; 373 else 374 hdrcnt = 20; 375 } 376 if (clientOnly) { 377 printf("%s %6d %6d %6d %6d %6d %6d %6d %6d", 378 ((clientOnly && serverOnly) ? "Client:" : ""), 379 DELTA(attrcache_hits) + DELTA(attrcache_misses), 380 DELTA(lookupcache_hits) + DELTA(lookupcache_misses), 381 DELTA(biocache_readlinks), 382 DELTA(biocache_reads), 383 DELTA(biocache_writes), 384 nfsstats.rpccnt[NFSPROC_RENAME]-lastst.rpccnt[NFSPROC_RENAME], 385 DELTA(accesscache_hits) + DELTA(accesscache_misses), 386 DELTA(biocache_readdirs) 387 ); 388 if (widemode) { 389 printf(" %s %s %s %s %s %s", 390 sperc1(DELTA(attrcache_hits), 391 DELTA(attrcache_misses)), 392 sperc1(DELTA(lookupcache_hits), 393 DELTA(lookupcache_misses)), 394 sperc2(DELTA(biocache_reads), 395 DELTA(read_bios)), 396 sperc2(DELTA(biocache_writes), 397 DELTA(write_bios)), 398 sperc1(DELTA(accesscache_hits), 399 DELTA(accesscache_misses)), 400 sperc2(DELTA(biocache_readdirs), 401 DELTA(readdir_bios)) 402 ); 403 } 404 printf("\n"); 405 } 406 if (serverOnly) { 407 printf("%s %6d %6d %6d %6d %6d %6d %6d %6d", 408 ((clientOnly && serverOnly) ? "Server:" : ""), 409 nfsstats.srvrpccnt[NFSPROC_GETATTR]-lastst.srvrpccnt[NFSPROC_GETATTR], 410 nfsstats.srvrpccnt[NFSPROC_LOOKUP]-lastst.srvrpccnt[NFSPROC_LOOKUP], 411 nfsstats.srvrpccnt[NFSPROC_READLINK]-lastst.srvrpccnt[NFSPROC_READLINK], 412 nfsstats.srvrpccnt[NFSPROC_READ]-lastst.srvrpccnt[NFSPROC_READ], 413 nfsstats.srvrpccnt[NFSPROC_WRITE]-lastst.srvrpccnt[NFSPROC_WRITE], 414 nfsstats.srvrpccnt[NFSPROC_RENAME]-lastst.srvrpccnt[NFSPROC_RENAME], 415 nfsstats.srvrpccnt[NFSPROC_ACCESS]-lastst.srvrpccnt[NFSPROC_ACCESS], 416 (nfsstats.srvrpccnt[NFSPROC_READDIR]-lastst.srvrpccnt[NFSPROC_READDIR]) 417 +(nfsstats.srvrpccnt[NFSPROC_READDIRPLUS]-lastst.srvrpccnt[NFSPROC_READDIRPLUS])); 418 printf("\n"); 419 } 420 lastst = nfsstats; 421 fflush(stdout); 422 sleep(interval); 423 } 424 /*NOTREACHED*/ 425 } 426 427 void 428 printhdr(int clientOnly, int serverOnly) 429 { 430 printf("%s%6.6s %6.6s %6.6s %6.6s %6.6s %6.6s %6.6s %6.6s", 431 ((serverOnly && clientOnly) ? " " : " "), 432 "GtAttr", "Lookup", "Rdlink", "Read", "Write", "Rename", 433 "Access", "Rddir"); 434 if (widemode && clientOnly) { 435 printf(" Attr Lkup BioR BioW Accs BioD"); 436 } 437 printf("\n"); 438 fflush(stdout); 439 } 440 441 void 442 usage() 443 { 444 (void)fprintf(stderr, 445 "usage: nfsstat [-csW] [-M core] [-N system] [-w interval]\n"); 446 exit(1); 447 } 448 449 static char SPBuf[64][8]; 450 static int SPIndex; 451 452 char * 453 sperc1(int hits, int misses) 454 { 455 char *p = SPBuf[SPIndex]; 456 457 if (hits + misses) { 458 sprintf(p, "%3d%%", 459 (int)(char)((quad_t)hits * 100 / (hits + misses))); 460 } else { 461 sprintf(p, " -"); 462 } 463 SPIndex = (SPIndex + 1) & 63; 464 return(p); 465 } 466 467 char * 468 sperc2(int ttl, int misses) 469 { 470 char *p = SPBuf[SPIndex]; 471 472 if (ttl) { 473 sprintf(p, "%3d%%", 474 (int)(char)((quad_t)(ttl - misses) * 100 / ttl)); 475 } else { 476 sprintf(p, " -"); 477 } 478 SPIndex = (SPIndex + 1) & 63; 479 return(p); 480 } 481 482