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 * @(#) Copyright (c) 1983, 1989, 1993 The Regents of the University of California. All rights reserved. 37 * @(#)nfsstat.c 8.2 (Berkeley) 3/31/95 38 * $FreeBSD: src/usr.bin/nfsstat/nfsstat.c,v 1.15.2.3 2001/06/06 20:25:58 tmm Exp $ 39 * $DragonFly: src/usr.bin/nfsstat/nfsstat.c,v 1.4 2004/07/16 00:55:04 hmp Exp $ 40 */ 41 42 #include <sys/param.h> 43 #include <sys/mount.h> 44 #include <sys/time.h> 45 #include <sys/sysctl.h> 46 #include <nfs/rpcv2.h> 47 #include <nfs/nfsproto.h> 48 #include <nfs/nfs.h> 49 #include <signal.h> 50 #include <fcntl.h> 51 #include <ctype.h> 52 #include <errno.h> 53 #include <kvm.h> 54 #include <limits.h> 55 #include <nlist.h> 56 #include <unistd.h> 57 #include <stdio.h> 58 #include <stdlib.h> 59 #include <string.h> 60 #include <paths.h> 61 #include <err.h> 62 63 struct nlist nl[] = { 64 #define N_NFSSTAT 0 65 { "_nfsstats" }, 66 "", 67 }; 68 kvm_t *kd; 69 70 static int deadkernel = 0; 71 static int widemode = 0; 72 73 void intpr(int, int); 74 void printhdr(int, int); 75 void sidewaysintpr(u_int, int, int); 76 void usage(void); 77 char *sperc1(int, int); 78 char *sperc2(int, int); 79 80 #define DELTA(field) (nfsstats.field - lastst.field) 81 82 int 83 main(int argc, char **argv) 84 { 85 u_int interval; 86 int clientOnly = -1; 87 int serverOnly = -1; 88 int ch; 89 char *memf, *nlistf; 90 char errbuf[_POSIX2_LINE_MAX]; 91 92 interval = 0; 93 memf = nlistf = NULL; 94 while ((ch = getopt(argc, argv, "csWM:N:w:")) != -1) 95 switch(ch) { 96 case 'M': 97 memf = optarg; 98 break; 99 case 'N': 100 nlistf = optarg; 101 break; 102 case 'W': 103 widemode = 1; 104 break; 105 case 'w': 106 interval = atoi(optarg); 107 break; 108 case 'c': 109 clientOnly = 1; 110 if (serverOnly < 0) 111 serverOnly = 0; 112 break; 113 case 's': 114 serverOnly = 1; 115 if (clientOnly < 0) 116 clientOnly = 0; 117 break; 118 case '?': 119 default: 120 usage(); 121 } 122 argc -= optind; 123 argv += optind; 124 125 #define BACKWARD_COMPATIBILITY 126 #ifdef BACKWARD_COMPATIBILITY 127 if (*argv) { 128 interval = atoi(*argv); 129 if (*++argv) { 130 nlistf = *argv; 131 if (*++argv) 132 memf = *argv; 133 } 134 } 135 #endif 136 if (nlistf != NULL || memf != NULL) { 137 deadkernel = 1; 138 139 if ((kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, 140 errbuf)) == 0) { 141 errx(1, "kvm_openfiles: %s", errbuf); 142 } 143 if (kvm_nlist(kd, nl) != 0) { 144 errx(1, "kvm_nlist: can't get names"); 145 } 146 } 147 148 if (interval) 149 sidewaysintpr(interval, clientOnly, serverOnly); 150 else 151 intpr(clientOnly, serverOnly); 152 exit(0); 153 } 154 155 /* 156 * Read the nfs stats using sysctl(3) for live kernels, or kvm_read 157 * for dead ones. 158 */ 159 void 160 readstats(struct nfsstats *stp) 161 { 162 if(deadkernel) { 163 if(kvm_read(kd, (u_long)nl[N_NFSSTAT].n_value, stp, 164 sizeof *stp) < 0) { 165 err(1, "kvm_read"); 166 } 167 } else { 168 int name[3]; 169 size_t buflen = sizeof *stp; 170 struct vfsconf vfc; 171 172 if (getvfsbyname("nfs", &vfc) < 0) 173 err(1, "getvfsbyname: NFS not compiled into kernel"); 174 name[0] = CTL_VFS; 175 name[1] = vfc.vfc_typenum; 176 name[2] = NFS_NFSSTATS; 177 if (sysctl(name, 3, stp, &buflen, NULL, (size_t)0) < 0) { 178 err(1, "sysctl"); 179 } 180 } 181 } 182 183 /* 184 * Print a description of the nfs stats. 185 */ 186 void 187 intpr(int clientOnly, int serverOnly) 188 { 189 struct nfsstats nfsstats; 190 191 readstats(&nfsstats); 192 193 if (clientOnly) { 194 printf("Client Info:\n"); 195 printf("Rpc Counts:\n"); 196 printf("%9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s\n", 197 "Getattr", "Setattr", "Lookup", "Readlink", "Read", 198 "Write", "Create", "Remove"); 199 printf("%9d %9d %9d %9d %9d %9d %9d %9d\n", 200 nfsstats.rpccnt[NFSPROC_GETATTR], 201 nfsstats.rpccnt[NFSPROC_SETATTR], 202 nfsstats.rpccnt[NFSPROC_LOOKUP], 203 nfsstats.rpccnt[NFSPROC_READLINK], 204 nfsstats.rpccnt[NFSPROC_READ], 205 nfsstats.rpccnt[NFSPROC_WRITE], 206 nfsstats.rpccnt[NFSPROC_CREATE], 207 nfsstats.rpccnt[NFSPROC_REMOVE]); 208 printf("%9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s\n", 209 "Rename", "Link", "Symlink", "Mkdir", "Rmdir", 210 "Readdir", "RdirPlus", "Access"); 211 printf("%9d %9d %9d %9d %9d %9d %9d %9d\n", 212 nfsstats.rpccnt[NFSPROC_RENAME], 213 nfsstats.rpccnt[NFSPROC_LINK], 214 nfsstats.rpccnt[NFSPROC_SYMLINK], 215 nfsstats.rpccnt[NFSPROC_MKDIR], 216 nfsstats.rpccnt[NFSPROC_RMDIR], 217 nfsstats.rpccnt[NFSPROC_READDIR], 218 nfsstats.rpccnt[NFSPROC_READDIRPLUS], 219 nfsstats.rpccnt[NFSPROC_ACCESS]); 220 printf("%9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s\n", 221 "Mknod", "Fsstat", "Fsinfo", "PathConf", "Commit", 222 "GLease", "Vacate", "Evict"); 223 printf("%9d %9d %9d %9d %9d %9d %9d %9d\n", 224 nfsstats.rpccnt[NFSPROC_MKNOD], 225 nfsstats.rpccnt[NFSPROC_FSSTAT], 226 nfsstats.rpccnt[NFSPROC_FSINFO], 227 nfsstats.rpccnt[NFSPROC_PATHCONF], 228 nfsstats.rpccnt[NFSPROC_COMMIT], 229 nfsstats.rpccnt[NQNFSPROC_GETLEASE], 230 nfsstats.rpccnt[NQNFSPROC_VACATED], 231 nfsstats.rpccnt[NQNFSPROC_EVICTED]); 232 printf("Rpc Info:\n"); 233 printf("%9.9s %9.9s %9.9s %9.9s %9.9s\n", 234 "TimedOut", "Invalid", "X Replies", "Retries", 235 "Requests"); 236 printf("%9d %9d %9d %9d %9d\n", 237 nfsstats.rpctimeouts, 238 nfsstats.rpcinvalid, 239 nfsstats.rpcunexpected, 240 nfsstats.rpcretries, 241 nfsstats.rpcrequests); 242 printf("Cache Info:\n"); 243 printf("%9.9s %9.9s %9.9s %9.9s", 244 "Attr Hits", "Misses", "Lkup Hits", "Misses"); 245 printf(" %9.9s %9.9s %9.9s %9.9s\n", 246 "BioR Hits", "Misses", "BioW Hits", "Misses"); 247 printf("%9d %9d %9d %9d", 248 nfsstats.attrcache_hits, nfsstats.attrcache_misses, 249 nfsstats.lookupcache_hits, nfsstats.lookupcache_misses); 250 printf(" %9d %9d %9d %9d\n", 251 nfsstats.biocache_reads-nfsstats.read_bios, 252 nfsstats.read_bios, 253 nfsstats.biocache_writes-nfsstats.write_bios, 254 nfsstats.write_bios); 255 printf("%9.9s %9.9s %9.9s %9.9s", 256 "BioRLHits", "Misses", "BioD Hits", "Misses"); 257 printf(" %9.9s %9.9s\n", "DirE Hits", "Misses"); 258 printf("%9d %9d %9d %9d", 259 nfsstats.biocache_readlinks-nfsstats.readlink_bios, 260 nfsstats.readlink_bios, 261 nfsstats.biocache_readdirs-nfsstats.readdir_bios, 262 nfsstats.readdir_bios); 263 printf(" %9d %9d\n", 264 nfsstats.direofcache_hits, nfsstats.direofcache_misses); 265 } 266 if (serverOnly) { 267 printf("\nServer Info:\n"); 268 printf("%9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s\n", 269 "Getattr", "Setattr", "Lookup", "Readlink", "Read", 270 "Write", "Create", "Remove"); 271 printf("%9d %9d %9d %9d %9d %9d %9d %9d\n", 272 nfsstats.srvrpccnt[NFSPROC_GETATTR], 273 nfsstats.srvrpccnt[NFSPROC_SETATTR], 274 nfsstats.srvrpccnt[NFSPROC_LOOKUP], 275 nfsstats.srvrpccnt[NFSPROC_READLINK], 276 nfsstats.srvrpccnt[NFSPROC_READ], 277 nfsstats.srvrpccnt[NFSPROC_WRITE], 278 nfsstats.srvrpccnt[NFSPROC_CREATE], 279 nfsstats.srvrpccnt[NFSPROC_REMOVE]); 280 printf("%9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s\n", 281 "Rename", "Link", "Symlink", "Mkdir", "Rmdir", 282 "Readdir", "RdirPlus", "Access"); 283 printf("%9d %9d %9d %9d %9d %9d %9d %9d\n", 284 nfsstats.srvrpccnt[NFSPROC_RENAME], 285 nfsstats.srvrpccnt[NFSPROC_LINK], 286 nfsstats.srvrpccnt[NFSPROC_SYMLINK], 287 nfsstats.srvrpccnt[NFSPROC_MKDIR], 288 nfsstats.srvrpccnt[NFSPROC_RMDIR], 289 nfsstats.srvrpccnt[NFSPROC_READDIR], 290 nfsstats.srvrpccnt[NFSPROC_READDIRPLUS], 291 nfsstats.srvrpccnt[NFSPROC_ACCESS]); 292 printf("%9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s\n", 293 "Mknod", "Fsstat", "Fsinfo", "PathConf", "Commit", 294 "GLease", "Vacate", "Evict"); 295 printf("%9d %9d %9d %9d %9d %9d %9d %9d\n", 296 nfsstats.srvrpccnt[NFSPROC_MKNOD], 297 nfsstats.srvrpccnt[NFSPROC_FSSTAT], 298 nfsstats.srvrpccnt[NFSPROC_FSINFO], 299 nfsstats.srvrpccnt[NFSPROC_PATHCONF], 300 nfsstats.srvrpccnt[NFSPROC_COMMIT], 301 nfsstats.srvrpccnt[NQNFSPROC_GETLEASE], 302 nfsstats.srvrpccnt[NQNFSPROC_VACATED], 303 nfsstats.srvrpccnt[NQNFSPROC_EVICTED]); 304 printf("Server Ret-Failed\n"); 305 printf("%17d\n", nfsstats.srvrpc_errs); 306 printf("Server Faults\n"); 307 printf("%13d\n", nfsstats.srv_errs); 308 printf("Server Cache Stats:\n"); 309 printf("%9.9s %9.9s %9.9s %9.9s\n", 310 "Inprog", "Idem", "Non-idem", "Misses"); 311 printf("%9d %9d %9d %9d\n", 312 nfsstats.srvcache_inproghits, 313 nfsstats.srvcache_idemdonehits, 314 nfsstats.srvcache_nonidemdonehits, 315 nfsstats.srvcache_misses); 316 printf("Server Lease Stats:\n"); 317 printf("%9.9s %9.9s %9.9s\n", 318 "Leases", "PeakL", "GLeases"); 319 printf("%9d %9d %9d\n", 320 nfsstats.srvnqnfs_leases, 321 nfsstats.srvnqnfs_maxleases, 322 nfsstats.srvnqnfs_getleases); 323 printf("Server Write Gathering:\n"); 324 printf("%9.9s %9.9s %9.9s\n", 325 "WriteOps", "WriteRPC", "Opsaved"); 326 printf("%9d %9d %9d\n", 327 nfsstats.srvvop_writes, 328 nfsstats.srvrpccnt[NFSPROC_WRITE], 329 nfsstats.srvrpccnt[NFSPROC_WRITE] - 330 nfsstats.srvvop_writes); 331 } 332 } 333 334 u_char signalled; /* set if alarm goes off "early" */ 335 336 /* 337 * Print a running summary of nfs statistics. 338 * Repeat display every interval seconds, showing statistics 339 * collected over that interval. Assumes that interval is non-zero. 340 * First line printed at top of screen is always cumulative. 341 */ 342 void 343 sidewaysintpr(u_int interval, int clientOnly, int serverOnly) 344 { 345 struct nfsstats nfsstats, lastst; 346 int hdrcnt = 1; 347 348 readstats(&lastst); 349 sleep(interval); 350 351 for (;;) { 352 readstats(&nfsstats); 353 354 if (--hdrcnt == 0) { 355 printhdr(clientOnly, serverOnly); 356 if (clientOnly && serverOnly) 357 hdrcnt = 10; 358 else 359 hdrcnt = 20; 360 } 361 if (clientOnly) { 362 printf("%s %6d %6d %6d %6d %6d %6d %6d %6d", 363 ((clientOnly && serverOnly) ? "Client:" : ""), 364 DELTA(attrcache_hits) + DELTA(attrcache_misses), 365 DELTA(lookupcache_hits) + DELTA(lookupcache_misses), 366 DELTA(biocache_readlinks), 367 DELTA(biocache_reads), 368 DELTA(biocache_writes), 369 nfsstats.rpccnt[NFSPROC_RENAME]-lastst.rpccnt[NFSPROC_RENAME], 370 DELTA(accesscache_hits) + DELTA(accesscache_misses), 371 DELTA(biocache_readdirs) 372 ); 373 if (widemode) { 374 printf(" %s %s %s %s %s %s", 375 sperc1(DELTA(attrcache_hits), 376 DELTA(attrcache_misses)), 377 sperc1(DELTA(lookupcache_hits), 378 DELTA(lookupcache_misses)), 379 sperc2(DELTA(biocache_reads), 380 DELTA(read_bios)), 381 sperc2(DELTA(biocache_writes), 382 DELTA(write_bios)), 383 sperc1(DELTA(accesscache_hits), 384 DELTA(accesscache_misses)), 385 sperc2(DELTA(biocache_readdirs), 386 DELTA(readdir_bios)) 387 ); 388 } 389 printf("\n"); 390 } 391 if (serverOnly) { 392 printf("%s %6d %6d %6d %6d %6d %6d %6d %6d", 393 ((clientOnly && serverOnly) ? "Server:" : ""), 394 nfsstats.srvrpccnt[NFSPROC_GETATTR]-lastst.srvrpccnt[NFSPROC_GETATTR], 395 nfsstats.srvrpccnt[NFSPROC_LOOKUP]-lastst.srvrpccnt[NFSPROC_LOOKUP], 396 nfsstats.srvrpccnt[NFSPROC_READLINK]-lastst.srvrpccnt[NFSPROC_READLINK], 397 nfsstats.srvrpccnt[NFSPROC_READ]-lastst.srvrpccnt[NFSPROC_READ], 398 nfsstats.srvrpccnt[NFSPROC_WRITE]-lastst.srvrpccnt[NFSPROC_WRITE], 399 nfsstats.srvrpccnt[NFSPROC_RENAME]-lastst.srvrpccnt[NFSPROC_RENAME], 400 nfsstats.srvrpccnt[NFSPROC_ACCESS]-lastst.srvrpccnt[NFSPROC_ACCESS], 401 (nfsstats.srvrpccnt[NFSPROC_READDIR]-lastst.srvrpccnt[NFSPROC_READDIR]) 402 +(nfsstats.srvrpccnt[NFSPROC_READDIRPLUS]-lastst.srvrpccnt[NFSPROC_READDIRPLUS])); 403 printf("\n"); 404 } 405 lastst = nfsstats; 406 fflush(stdout); 407 sleep(interval); 408 } 409 /*NOTREACHED*/ 410 } 411 412 void 413 printhdr(int clientOnly, int serverOnly) 414 { 415 printf("%s%6.6s %6.6s %6.6s %6.6s %6.6s %6.6s %6.6s %6.6s", 416 ((serverOnly && clientOnly) ? " " : " "), 417 "GtAttr", "Lookup", "Rdlink", "Read", "Write", "Rename", 418 "Access", "Rddir"); 419 if (widemode && clientOnly) { 420 printf(" Attr Lkup BioR BioW Accs BioD"); 421 } 422 printf("\n"); 423 fflush(stdout); 424 } 425 426 void 427 usage(void) 428 { 429 (void)fprintf(stderr, 430 "usage: nfsstat [-csW] [-M core] [-N system] [-w interval]\n"); 431 exit(1); 432 } 433 434 static char SPBuf[64][8]; 435 static int SPIndex; 436 437 char * 438 sperc1(int hits, int misses) 439 { 440 char *p = SPBuf[SPIndex]; 441 442 if (hits + misses) { 443 sprintf(p, "%3d%%", 444 (int)(char)((quad_t)hits * 100 / (hits + misses))); 445 } else { 446 sprintf(p, " -"); 447 } 448 SPIndex = (SPIndex + 1) & 63; 449 return(p); 450 } 451 452 char * 453 sperc2(int ttl, int misses) 454 { 455 char *p = SPBuf[SPIndex]; 456 457 if (ttl) { 458 sprintf(p, "%3d%%", 459 (int)(char)((quad_t)(ttl - misses) * 100 / ttl)); 460 } else { 461 sprintf(p, " -"); 462 } 463 SPIndex = (SPIndex + 1) & 63; 464 return(p); 465 } 466 467