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 /*static char sccsid[] = "From: @(#)nfsstat.c 8.1 (Berkeley) 6/6/93";*/ 45 static const char rcsid[] = 46 "$Id: nfsstat.c,v 1.5 1995/10/30 15:44:44 phk Exp $"; 47 #endif /* not lint */ 48 49 #include <sys/param.h> 50 #include <sys/mount.h> 51 #include <sys/time.h> 52 #include <sys/sysctl.h> 53 #include <nfs/rpcv2.h> 54 #include <nfs/nfsproto.h> 55 #include <nfs/nfs.h> 56 #include <signal.h> 57 #include <fcntl.h> 58 #include <ctype.h> 59 #include <errno.h> 60 #include <kvm.h> 61 #include <nlist.h> 62 #include <unistd.h> 63 #include <stdio.h> 64 #include <stdlib.h> 65 #include <string.h> 66 #include <paths.h> 67 #include <err.h> 68 69 struct nlist nl[] = { 70 #define N_NFSSTAT 0 71 { "_nfsstats" }, 72 "", 73 }; 74 kvm_t *kd; 75 76 static int deadkernel = 0; 77 78 void intpr __P((void)); 79 void printhdr __P((void)); 80 void sidewaysintpr __P((u_int)); 81 void usage __P((void)); 82 83 main(argc, argv) 84 int argc; 85 char **argv; 86 { 87 extern int optind; 88 extern char *optarg; 89 u_int interval; 90 int ch; 91 char *memf, *nlistf; 92 char errbuf[80]; 93 94 interval = 0; 95 memf = nlistf = NULL; 96 while ((ch = getopt(argc, argv, "M:N:w:")) != EOF) 97 switch(ch) { 98 case 'M': 99 memf = optarg; 100 break; 101 case 'N': 102 nlistf = optarg; 103 break; 104 case 'w': 105 interval = atoi(optarg); 106 break; 107 case '?': 108 default: 109 usage(); 110 } 111 argc -= optind; 112 argv += optind; 113 114 #define BACKWARD_COMPATIBILITY 115 #ifdef BACKWARD_COMPATIBILITY 116 if (*argv) { 117 interval = atoi(*argv); 118 if (*++argv) { 119 nlistf = *argv; 120 if (*++argv) 121 memf = *argv; 122 } 123 } 124 #endif 125 /* 126 * Discard setgid privileges if not the running kernel so that bad 127 * guys can't print interesting stuff from kernel memory. 128 */ 129 if (nlistf != NULL || memf != NULL) { 130 setgid(getgid()); 131 deadkernel = 1; 132 133 if ((kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, 134 errbuf)) == 0) { 135 errx(1, "kvm_openfiles: %s", errbuf); 136 } 137 if (kvm_nlist(kd, nl) != 0) { 138 errx(1, "kvm_nlist: can't get names"); 139 } 140 } 141 142 if (interval) 143 sidewaysintpr(interval); 144 else 145 intpr(); 146 exit(0); 147 } 148 149 /* 150 * Read the nfs stats using sysctl(3) for live kernels, or kvm_read 151 * for dead ones. 152 */ 153 void 154 readstats(stp) 155 struct nfsstats *stp; 156 { 157 if(deadkernel) { 158 if(kvm_read(kd, (u_long)nl[N_NFSSTAT].n_value, stp, 159 sizeof *stp) < 0) { 160 err(1, "kvm_read"); 161 } 162 } else { 163 int name[3]; 164 size_t buflen = sizeof *stp; 165 166 name[0] = CTL_VFS; 167 name[1] = MOUNT_NFS; 168 name[2] = NFS_NFSSTATS; 169 170 if(sysctl(name, 3, stp, &buflen, (void *)0, (size_t)0) < 0) { 171 err(1, "sysctl"); 172 } 173 } 174 } 175 176 /* 177 * Print a description of the nfs stats. 178 */ 179 void 180 intpr() 181 { 182 struct nfsstats nfsstats; 183 184 readstats(&nfsstats); 185 186 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 printf("\nServer Info:\n"); 257 printf("%9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s\n", 258 "Getattr", "Setattr", "Lookup", "Readlink", "Read", 259 "Write", "Create", "Remove"); 260 printf("%9d %9d %9d %9d %9d %9d %9d %9d\n", 261 nfsstats.srvrpccnt[NFSPROC_GETATTR], 262 nfsstats.srvrpccnt[NFSPROC_SETATTR], 263 nfsstats.srvrpccnt[NFSPROC_LOOKUP], 264 nfsstats.srvrpccnt[NFSPROC_READLINK], 265 nfsstats.srvrpccnt[NFSPROC_READ], 266 nfsstats.srvrpccnt[NFSPROC_WRITE], 267 nfsstats.srvrpccnt[NFSPROC_CREATE], 268 nfsstats.srvrpccnt[NFSPROC_REMOVE]); 269 printf("%9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s\n", 270 "Rename", "Link", "Symlink", "Mkdir", "Rmdir", 271 "Readdir", "RdirPlus", "Access"); 272 printf("%9d %9d %9d %9d %9d %9d %9d %9d\n", 273 nfsstats.srvrpccnt[NFSPROC_RENAME], 274 nfsstats.srvrpccnt[NFSPROC_LINK], 275 nfsstats.srvrpccnt[NFSPROC_SYMLINK], 276 nfsstats.srvrpccnt[NFSPROC_MKDIR], 277 nfsstats.srvrpccnt[NFSPROC_RMDIR], 278 nfsstats.srvrpccnt[NFSPROC_READDIR], 279 nfsstats.srvrpccnt[NFSPROC_READDIRPLUS], 280 nfsstats.srvrpccnt[NFSPROC_ACCESS]); 281 printf("%9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s\n", 282 "Mknod", "Fsstat", "Fsinfo", "PathConf", "Commit", 283 "GLease", "Vacate", "Evict"); 284 printf("%9d %9d %9d %9d %9d %9d %9d %9d\n", 285 nfsstats.srvrpccnt[NFSPROC_MKNOD], 286 nfsstats.srvrpccnt[NFSPROC_FSSTAT], 287 nfsstats.srvrpccnt[NFSPROC_FSINFO], 288 nfsstats.srvrpccnt[NFSPROC_PATHCONF], 289 nfsstats.srvrpccnt[NFSPROC_COMMIT], 290 nfsstats.srvrpccnt[NQNFSPROC_GETLEASE], 291 nfsstats.srvrpccnt[NQNFSPROC_VACATED], 292 nfsstats.srvrpccnt[NQNFSPROC_EVICTED]); 293 printf("Server Ret-Failed\n"); 294 printf("%17d\n", nfsstats.srvrpc_errs); 295 printf("Server Faults\n"); 296 printf("%13d\n", nfsstats.srv_errs); 297 printf("Server Cache Stats:\n"); 298 printf("%9.9s %9.9s %9.9s %9.9s\n", 299 "Inprog", "Idem", "Non-idem", "Misses"); 300 printf("%9d %9d %9d %9d\n", 301 nfsstats.srvcache_inproghits, 302 nfsstats.srvcache_idemdonehits, 303 nfsstats.srvcache_nonidemdonehits, 304 nfsstats.srvcache_misses); 305 printf("Server Lease Stats:\n"); 306 printf("%9.9s %9.9s %9.9s\n", 307 "Leases", "PeakL", "GLeases"); 308 printf("%9d %9d %9d\n", 309 nfsstats.srvnqnfs_leases, 310 nfsstats.srvnqnfs_maxleases, 311 nfsstats.srvnqnfs_getleases); 312 printf("Server Write Gathering:\n"); 313 printf("%9.9s %9.9s %9.9s\n", 314 "WriteOps", "WriteRPC", "Opsaved"); 315 printf("%9d %9d %9d\n", 316 nfsstats.srvvop_writes, 317 nfsstats.srvrpccnt[NFSPROC_WRITE], 318 nfsstats.srvrpccnt[NFSPROC_WRITE] - nfsstats.srvvop_writes); 319 } 320 321 u_char signalled; /* set if alarm goes off "early" */ 322 323 /* 324 * Print a running summary of nfs statistics. 325 * Repeat display every interval seconds, showing statistics 326 * collected over that interval. Assumes that interval is non-zero. 327 * First line printed at top of screen is always cumulative. 328 */ 329 void 330 sidewaysintpr(interval) 331 u_int interval; 332 { 333 struct nfsstats nfsstats, lastst; 334 int hdrcnt, oldmask; 335 void catchalarm(); 336 337 (void)signal(SIGALRM, catchalarm); 338 signalled = 0; 339 (void)alarm(interval); 340 bzero((caddr_t)&lastst, sizeof(lastst)); 341 342 for (hdrcnt = 1;;) { 343 if (!--hdrcnt) { 344 printhdr(); 345 hdrcnt = 20; 346 } 347 readstats(&nfsstats); 348 printf("Client: %8d %8d %8d %8d %8d %8d %8d %8d\n", 349 nfsstats.rpccnt[NFSPROC_GETATTR]-lastst.rpccnt[NFSPROC_GETATTR], 350 nfsstats.rpccnt[NFSPROC_LOOKUP]-lastst.rpccnt[NFSPROC_LOOKUP], 351 nfsstats.rpccnt[NFSPROC_READLINK]-lastst.rpccnt[NFSPROC_READLINK], 352 nfsstats.rpccnt[NFSPROC_READ]-lastst.rpccnt[NFSPROC_READ], 353 nfsstats.rpccnt[NFSPROC_WRITE]-lastst.rpccnt[NFSPROC_WRITE], 354 nfsstats.rpccnt[NFSPROC_RENAME]-lastst.rpccnt[NFSPROC_RENAME], 355 nfsstats.rpccnt[NFSPROC_ACCESS]-lastst.rpccnt[NFSPROC_ACCESS], 356 (nfsstats.rpccnt[NFSPROC_READDIR]-lastst.rpccnt[NFSPROC_READDIR]) 357 +(nfsstats.rpccnt[NFSPROC_READDIRPLUS]-lastst.rpccnt[NFSPROC_READDIRPLUS])); 358 printf("Server: %8d %8d %8d %8d %8d %8d %8d %8d\n", 359 nfsstats.srvrpccnt[NFSPROC_GETATTR]-lastst.srvrpccnt[NFSPROC_GETATTR], 360 nfsstats.srvrpccnt[NFSPROC_LOOKUP]-lastst.srvrpccnt[NFSPROC_LOOKUP], 361 nfsstats.srvrpccnt[NFSPROC_READLINK]-lastst.srvrpccnt[NFSPROC_READLINK], 362 nfsstats.srvrpccnt[NFSPROC_READ]-lastst.srvrpccnt[NFSPROC_READ], 363 nfsstats.srvrpccnt[NFSPROC_WRITE]-lastst.srvrpccnt[NFSPROC_WRITE], 364 nfsstats.srvrpccnt[NFSPROC_RENAME]-lastst.srvrpccnt[NFSPROC_RENAME], 365 nfsstats.srvrpccnt[NFSPROC_ACCESS]-lastst.srvrpccnt[NFSPROC_ACCESS], 366 (nfsstats.srvrpccnt[NFSPROC_READDIR]-lastst.srvrpccnt[NFSPROC_READDIR]) 367 +(nfsstats.srvrpccnt[NFSPROC_READDIRPLUS]-lastst.srvrpccnt[NFSPROC_READDIRPLUS])); 368 lastst = nfsstats; 369 fflush(stdout); 370 oldmask = sigblock(sigmask(SIGALRM)); 371 if (!signalled) 372 sigpause(0); 373 sigsetmask(oldmask); 374 signalled = 0; 375 (void)alarm(interval); 376 } 377 /*NOTREACHED*/ 378 } 379 380 void 381 printhdr() 382 { 383 printf(" %8.8s %8.8s %8.8s %8.8s %8.8s %8.8s %8.8s %8.8s\n", 384 "Getattr", "Lookup", "Readlink", "Read", "Write", "Rename", 385 "Access", "Readdir"); 386 fflush(stdout); 387 } 388 389 /* 390 * Called if an interval expires before sidewaysintpr has completed a loop. 391 * Sets a flag to not wait for the alarm. 392 */ 393 void 394 catchalarm() 395 { 396 signalled = 1; 397 } 398 399 void 400 usage() 401 { 402 (void)fprintf(stderr, 403 "usage: nfsstat [-M core] [-N system] [-w interval]\n"); 404 exit(1); 405 } 406