nfsstat.c revision 1.12
1 /* $NetBSD: nfsstat.c,v 1.12 1998/07/03 15:49:25 msaitoh 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 1.12 1998/07/03 15:49:25 msaitoh 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]; 102 103 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 so that bad 145 * guys can't print interesting stuff from kernel memory. 146 */ 147 if (nlistf != NULL || memf != NULL) 148 setgid(getgid()); 149 150 if ((kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, errbuf)) == 0) 151 errx(1, "kvm_openfiles: %s", errbuf); 152 if (kvm_nlist(kd, nl) != 0) 153 errx(1, "kvm_nlist: can't get names"); 154 155 if (interval) 156 sidewaysintpr(interval, nl[N_NFSSTAT].n_value); 157 else 158 intpr(nl[N_NFSSTAT].n_value); 159 exit(0); 160 } 161 162 /* 163 * Print a description of the nfs stats. 164 */ 165 void 166 intpr(nfsstataddr) 167 u_long nfsstataddr; 168 { 169 struct nfsstats nfsstats; 170 171 if (kvm_read(kd, (u_long)nfsstataddr, (char *)&nfsstats, 172 sizeof(struct nfsstats)) != sizeof(struct nfsstats)) 173 errx(1, "kvm_read failed"); 174 if (printall || clientinfo){ 175 printf("Client Info:\n"); 176 printf("Rpc Counts:\n"); 177 printf("%9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s\n", 178 "Getattr", "Setattr", "Lookup", "Readlink", "Read", 179 "Write", "Create", "Remove"); 180 printf("%9d %9d %9d %9d %9d %9d %9d %9d\n", 181 nfsstats.rpccnt[NFSPROC_GETATTR], 182 nfsstats.rpccnt[NFSPROC_SETATTR], 183 nfsstats.rpccnt[NFSPROC_LOOKUP], 184 nfsstats.rpccnt[NFSPROC_READLINK], 185 nfsstats.rpccnt[NFSPROC_READ], 186 nfsstats.rpccnt[NFSPROC_WRITE], 187 nfsstats.rpccnt[NFSPROC_CREATE], 188 nfsstats.rpccnt[NFSPROC_REMOVE]); 189 printf("%9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s\n", 190 "Rename", "Link", "Symlink", "Mkdir", "Rmdir", 191 "Readdir", "RdirPlus", "Access"); 192 printf("%9d %9d %9d %9d %9d %9d %9d %9d\n", 193 nfsstats.rpccnt[NFSPROC_RENAME], 194 nfsstats.rpccnt[NFSPROC_LINK], 195 nfsstats.rpccnt[NFSPROC_SYMLINK], 196 nfsstats.rpccnt[NFSPROC_MKDIR], 197 nfsstats.rpccnt[NFSPROC_RMDIR], 198 nfsstats.rpccnt[NFSPROC_READDIR], 199 nfsstats.rpccnt[NFSPROC_READDIRPLUS], 200 nfsstats.rpccnt[NFSPROC_ACCESS]); 201 printf("%9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s\n", 202 "Mknod", "Fsstat", "Fsinfo", "PathConf", "Commit", 203 "GLease", "Vacate", "Evict"); 204 printf("%9d %9d %9d %9d %9d %9d %9d %9d\n", 205 nfsstats.rpccnt[NFSPROC_MKNOD], 206 nfsstats.rpccnt[NFSPROC_FSSTAT], 207 nfsstats.rpccnt[NFSPROC_FSINFO], 208 nfsstats.rpccnt[NFSPROC_PATHCONF], 209 nfsstats.rpccnt[NFSPROC_COMMIT], 210 nfsstats.rpccnt[NQNFSPROC_GETLEASE], 211 nfsstats.rpccnt[NQNFSPROC_VACATED], 212 nfsstats.rpccnt[NQNFSPROC_EVICTED]); 213 printf("Rpc Info:\n"); 214 printf("%9.9s %9.9s %9.9s %9.9s %9.9s\n", 215 "TimedOut", "Invalid", "X Replies", "Retries", "Requests"); 216 printf("%9d %9d %9d %9d %9d\n", 217 nfsstats.rpctimeouts, 218 nfsstats.rpcinvalid, 219 nfsstats.rpcunexpected, 220 nfsstats.rpcretries, 221 nfsstats.rpcrequests); 222 printf("Cache Info:\n"); 223 printf("%9.9s %9.9s %9.9s %9.9s", 224 "Attr Hits", "Misses", "Lkup Hits", "Misses"); 225 printf(" %9.9s %9.9s %9.9s %9.9s\n", 226 "BioR Hits", "Misses", "BioW Hits", "Misses"); 227 printf("%9d %9d %9d %9d", 228 nfsstats.attrcache_hits, nfsstats.attrcache_misses, 229 nfsstats.lookupcache_hits, nfsstats.lookupcache_misses); 230 printf(" %9d %9d %9d %9d\n", 231 nfsstats.biocache_reads-nfsstats.read_bios, 232 nfsstats.read_bios, 233 nfsstats.biocache_writes-nfsstats.write_bios, 234 nfsstats.write_bios); 235 printf("%9.9s %9.9s %9.9s %9.9s", 236 "BioRLHits", "Misses", "BioD Hits", "Misses"); 237 printf(" %9.9s %9.9s\n", "DirE Hits", "Misses"); 238 printf("%9d %9d %9d %9d", 239 nfsstats.biocache_readlinks-nfsstats.readlink_bios, 240 nfsstats.readlink_bios, 241 nfsstats.biocache_readdirs-nfsstats.readdir_bios, 242 nfsstats.readdir_bios); 243 printf(" %9d %9d\n", 244 nfsstats.direofcache_hits, nfsstats.direofcache_misses); 245 } 246 if (printall || (clientinfo && serverinfo)){ 247 printf("\n"); 248 } 249 if (printall || serverinfo){ 250 printf("Server Info:\n"); 251 printf("%9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s\n", 252 "Getattr", "Setattr", "Lookup", "Readlink", "Read", 253 "Write", "Create", "Remove"); 254 printf("%9d %9d %9d %9d %9d %9d %9d %9d\n", 255 nfsstats.srvrpccnt[NFSPROC_GETATTR], 256 nfsstats.srvrpccnt[NFSPROC_SETATTR], 257 nfsstats.srvrpccnt[NFSPROC_LOOKUP], 258 nfsstats.srvrpccnt[NFSPROC_READLINK], 259 nfsstats.srvrpccnt[NFSPROC_READ], 260 nfsstats.srvrpccnt[NFSPROC_WRITE], 261 nfsstats.srvrpccnt[NFSPROC_CREATE], 262 nfsstats.srvrpccnt[NFSPROC_REMOVE]); 263 printf("%9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s\n", 264 "Rename", "Link", "Symlink", "Mkdir", "Rmdir", 265 "Readdir", "RdirPlus", "Access"); 266 printf("%9d %9d %9d %9d %9d %9d %9d %9d\n", 267 nfsstats.srvrpccnt[NFSPROC_RENAME], 268 nfsstats.srvrpccnt[NFSPROC_LINK], 269 nfsstats.srvrpccnt[NFSPROC_SYMLINK], 270 nfsstats.srvrpccnt[NFSPROC_MKDIR], 271 nfsstats.srvrpccnt[NFSPROC_RMDIR], 272 nfsstats.srvrpccnt[NFSPROC_READDIR], 273 nfsstats.srvrpccnt[NFSPROC_READDIRPLUS], 274 nfsstats.srvrpccnt[NFSPROC_ACCESS]); 275 printf("%9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s\n", 276 "Mknod", "Fsstat", "Fsinfo", "PathConf", "Commit", 277 "GLease", "Vacate", "Evict"); 278 printf("%9d %9d %9d %9d %9d %9d %9d %9d\n", 279 nfsstats.srvrpccnt[NFSPROC_MKNOD], 280 nfsstats.srvrpccnt[NFSPROC_FSSTAT], 281 nfsstats.srvrpccnt[NFSPROC_FSINFO], 282 nfsstats.srvrpccnt[NFSPROC_PATHCONF], 283 nfsstats.srvrpccnt[NFSPROC_COMMIT], 284 nfsstats.srvrpccnt[NQNFSPROC_GETLEASE], 285 nfsstats.srvrpccnt[NQNFSPROC_VACATED], 286 nfsstats.srvrpccnt[NQNFSPROC_EVICTED]); 287 printf("Server Ret-Failed\n"); 288 printf("%17d\n", nfsstats.srvrpc_errs); 289 printf("Server Faults\n"); 290 printf("%13d\n", nfsstats.srv_errs); 291 printf("Server Cache Stats:\n"); 292 printf("%9.9s %9.9s %9.9s %9.9s\n", 293 "Inprog", "Idem", "Non-idem", "Misses"); 294 printf("%9d %9d %9d %9d\n", 295 nfsstats.srvcache_inproghits, 296 nfsstats.srvcache_idemdonehits, 297 nfsstats.srvcache_nonidemdonehits, 298 nfsstats.srvcache_misses); 299 printf("Server Lease Stats:\n"); 300 printf("%9.9s %9.9s %9.9s\n", 301 "Leases", "PeakL", "GLeases"); 302 printf("%9d %9d %9d\n", 303 nfsstats.srvnqnfs_leases, 304 nfsstats.srvnqnfs_maxleases, 305 nfsstats.srvnqnfs_getleases); 306 printf("Server Write Gathering:\n"); 307 printf("%9.9s %9.9s %9.9s\n", 308 "WriteOps", "WriteRPC", "Opsaved"); 309 printf("%9d %9d %9d\n", 310 nfsstats.srvvop_writes, 311 nfsstats.srvrpccnt[NFSPROC_WRITE], 312 nfsstats.srvrpccnt[NFSPROC_WRITE] - nfsstats.srvvop_writes); 313 } 314 } 315 316 u_char signalled; /* set if alarm goes off "early" */ 317 318 /* 319 * Print a running summary of nfs statistics. 320 * Repeat display every interval seconds, showing statistics 321 * collected over that interval. Assumes that interval is non-zero. 322 * First line printed at top of screen is always cumulative. 323 */ 324 void 325 sidewaysintpr(interval, off) 326 u_int interval; 327 u_long off; 328 { 329 struct nfsstats nfsstats, lastst; 330 int hdrcnt, oldmask; 331 332 (void)signal(SIGALRM, catchalarm); 333 signalled = 0; 334 (void)alarm(interval); 335 memset((caddr_t)&lastst, 0, sizeof(lastst)); 336 337 for (hdrcnt = 1;;) { 338 if (!--hdrcnt) { 339 printhdr(); 340 hdrcnt = 20; 341 } 342 if (kvm_read(kd, off, (char *)&nfsstats, sizeof(nfsstats)) 343 != sizeof(nfsstats)) 344 errx(1, "kvm_read failed"); 345 if (printall || clientinfo) 346 printf("Client: %8d %8d %8d %8d %8d %8d %8d %8d\n", 347 nfsstats.rpccnt[NFSPROC_GETATTR]-lastst.rpccnt[NFSPROC_GETATTR], 348 nfsstats.rpccnt[NFSPROC_LOOKUP]-lastst.rpccnt[NFSPROC_LOOKUP], 349 nfsstats.rpccnt[NFSPROC_READLINK]-lastst.rpccnt[NFSPROC_READLINK], 350 nfsstats.rpccnt[NFSPROC_READ]-lastst.rpccnt[NFSPROC_READ], 351 nfsstats.rpccnt[NFSPROC_WRITE]-lastst.rpccnt[NFSPROC_WRITE], 352 nfsstats.rpccnt[NFSPROC_RENAME]-lastst.rpccnt[NFSPROC_RENAME], 353 nfsstats.rpccnt[NFSPROC_ACCESS]-lastst.rpccnt[NFSPROC_ACCESS], 354 (nfsstats.rpccnt[NFSPROC_READDIR]-lastst.rpccnt[NFSPROC_READDIR]) 355 +(nfsstats.rpccnt[NFSPROC_READDIRPLUS]-lastst.rpccnt[NFSPROC_READDIRPLUS])); 356 if (printall || serverinfo) 357 printf("Server: %8d %8d %8d %8d %8d %8d %8d %8d\n", 358 nfsstats.srvrpccnt[NFSPROC_GETATTR]-lastst.srvrpccnt[NFSPROC_GETATTR], 359 nfsstats.srvrpccnt[NFSPROC_LOOKUP]-lastst.srvrpccnt[NFSPROC_LOOKUP], 360 nfsstats.srvrpccnt[NFSPROC_READLINK]-lastst.srvrpccnt[NFSPROC_READLINK], 361 nfsstats.srvrpccnt[NFSPROC_READ]-lastst.srvrpccnt[NFSPROC_READ], 362 nfsstats.srvrpccnt[NFSPROC_WRITE]-lastst.srvrpccnt[NFSPROC_WRITE], 363 nfsstats.srvrpccnt[NFSPROC_RENAME]-lastst.srvrpccnt[NFSPROC_RENAME], 364 nfsstats.srvrpccnt[NFSPROC_ACCESS]-lastst.srvrpccnt[NFSPROC_ACCESS], 365 (nfsstats.srvrpccnt[NFSPROC_READDIR]-lastst.srvrpccnt[NFSPROC_READDIR]) 366 +(nfsstats.srvrpccnt[NFSPROC_READDIRPLUS]-lastst.srvrpccnt[NFSPROC_READDIRPLUS])); 367 lastst = nfsstats; 368 fflush(stdout); 369 oldmask = sigblock(sigmask(SIGALRM)); 370 if (!signalled) 371 sigpause(0); 372 sigsetmask(oldmask); 373 signalled = 0; 374 (void)alarm(interval); 375 } 376 /*NOTREACHED*/ 377 } 378 379 void 380 printhdr() 381 { 382 printf(" %8.8s %8.8s %8.8s %8.8s %8.8s %8.8s %8.8s %8.8s\n", 383 "Getattr", "Lookup", "Readlink", "Read", "Write", "Rename", 384 "Access", "Readdir"); 385 fflush(stdout); 386 } 387 388 /* 389 * Called if an interval expires before sidewaysintpr has completed a loop. 390 * Sets a flag to not wait for the alarm. 391 */ 392 void 393 catchalarm(dummy) 394 int dummy; 395 { 396 signalled = 1; 397 } 398 399 void 400 usage() 401 { 402 (void)fprintf(stderr, 403 "usage: nfsstat [-cs] [-M core] [-N system] [-w interval]\n"); 404 exit(1); 405 } 406
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