nfsstat.c revision 1.9
1 /* $NetBSD: nfsstat.c,v 1.9 1997/10/19 06:27:21 lukem 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 1.9 1997/10/19 06:27:21 lukem 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 90 main(argc, argv) 91 int argc; 92 char **argv; 93 { 94 extern int optind; 95 extern char *optarg; 96 u_int interval; 97 int ch; 98 char *memf, *nlistf; 99 char errbuf[_POSIX2_LINE_MAX]; 100 101 interval = 0; 102 memf = nlistf = NULL; 103 while ((ch = getopt(argc, argv, "M: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 interval = atoi(optarg); 113 break; 114 case '?': 115 default: 116 usage(); 117 } 118 argc -= optind; 119 argv += optind; 120 121 #define BACKWARD_COMPATIBILITY 122 #ifdef BACKWARD_COMPATIBILITY 123 if (*argv) { 124 interval = atoi(*argv); 125 if (*++argv) { 126 nlistf = *argv; 127 if (*++argv) 128 memf = *argv; 129 } 130 } 131 #endif 132 /* 133 * Discard setgid privileges if not the running kernel so that bad 134 * guys can't print interesting stuff from kernel memory. 135 */ 136 if (nlistf != NULL || memf != NULL) 137 setgid(getgid()); 138 139 if ((kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, errbuf)) == 0) 140 errx(1, "kvm_openfiles: %s", errbuf); 141 if (kvm_nlist(kd, nl) != 0) 142 errx(1, "kvm_nlist: can't get names"); 143 144 if (interval) 145 sidewaysintpr(interval, nl[N_NFSSTAT].n_value); 146 else 147 intpr(nl[N_NFSSTAT].n_value); 148 exit(0); 149 } 150 151 /* 152 * Print a description of the nfs stats. 153 */ 154 void 155 intpr(nfsstataddr) 156 u_long nfsstataddr; 157 { 158 struct nfsstats nfsstats; 159 160 if (kvm_read(kd, (u_long)nfsstataddr, 161 (char *)&nfsstats, sizeof(struct nfsstats)) < 0) 162 errx(1, "kvm_read failed"); 163 printf("Client Info:\n"); 164 printf("Rpc Counts:\n"); 165 printf("%9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s\n", 166 "Getattr", "Setattr", "Lookup", "Readlink", "Read", 167 "Write", "Create", "Remove"); 168 printf("%9d %9d %9d %9d %9d %9d %9d %9d\n", 169 nfsstats.rpccnt[NFSPROC_GETATTR], 170 nfsstats.rpccnt[NFSPROC_SETATTR], 171 nfsstats.rpccnt[NFSPROC_LOOKUP], 172 nfsstats.rpccnt[NFSPROC_READLINK], 173 nfsstats.rpccnt[NFSPROC_READ], 174 nfsstats.rpccnt[NFSPROC_WRITE], 175 nfsstats.rpccnt[NFSPROC_CREATE], 176 nfsstats.rpccnt[NFSPROC_REMOVE]); 177 printf("%9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s\n", 178 "Rename", "Link", "Symlink", "Mkdir", "Rmdir", 179 "Readdir", "RdirPlus", "Access"); 180 printf("%9d %9d %9d %9d %9d %9d %9d %9d\n", 181 nfsstats.rpccnt[NFSPROC_RENAME], 182 nfsstats.rpccnt[NFSPROC_LINK], 183 nfsstats.rpccnt[NFSPROC_SYMLINK], 184 nfsstats.rpccnt[NFSPROC_MKDIR], 185 nfsstats.rpccnt[NFSPROC_RMDIR], 186 nfsstats.rpccnt[NFSPROC_READDIR], 187 nfsstats.rpccnt[NFSPROC_READDIRPLUS], 188 nfsstats.rpccnt[NFSPROC_ACCESS]); 189 printf("%9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s\n", 190 "Mknod", "Fsstat", "Fsinfo", "PathConf", "Commit", 191 "GLease", "Vacate", "Evict"); 192 printf("%9d %9d %9d %9d %9d %9d %9d %9d\n", 193 nfsstats.rpccnt[NFSPROC_MKNOD], 194 nfsstats.rpccnt[NFSPROC_FSSTAT], 195 nfsstats.rpccnt[NFSPROC_FSINFO], 196 nfsstats.rpccnt[NFSPROC_PATHCONF], 197 nfsstats.rpccnt[NFSPROC_COMMIT], 198 nfsstats.rpccnt[NQNFSPROC_GETLEASE], 199 nfsstats.rpccnt[NQNFSPROC_VACATED], 200 nfsstats.rpccnt[NQNFSPROC_EVICTED]); 201 printf("Rpc Info:\n"); 202 printf("%9.9s %9.9s %9.9s %9.9s %9.9s\n", 203 "TimedOut", "Invalid", "X Replies", "Retries", "Requests"); 204 printf("%9d %9d %9d %9d %9d\n", 205 nfsstats.rpctimeouts, 206 nfsstats.rpcinvalid, 207 nfsstats.rpcunexpected, 208 nfsstats.rpcretries, 209 nfsstats.rpcrequests); 210 printf("Cache Info:\n"); 211 printf("%9.9s %9.9s %9.9s %9.9s", 212 "Attr Hits", "Misses", "Lkup Hits", "Misses"); 213 printf(" %9.9s %9.9s %9.9s %9.9s\n", 214 "BioR Hits", "Misses", "BioW Hits", "Misses"); 215 printf("%9d %9d %9d %9d", 216 nfsstats.attrcache_hits, nfsstats.attrcache_misses, 217 nfsstats.lookupcache_hits, nfsstats.lookupcache_misses); 218 printf(" %9d %9d %9d %9d\n", 219 nfsstats.biocache_reads-nfsstats.read_bios, 220 nfsstats.read_bios, 221 nfsstats.biocache_writes-nfsstats.write_bios, 222 nfsstats.write_bios); 223 printf("%9.9s %9.9s %9.9s %9.9s", 224 "BioRLHits", "Misses", "BioD Hits", "Misses"); 225 printf(" %9.9s %9.9s\n", "DirE Hits", "Misses"); 226 printf("%9d %9d %9d %9d", 227 nfsstats.biocache_readlinks-nfsstats.readlink_bios, 228 nfsstats.readlink_bios, 229 nfsstats.biocache_readdirs-nfsstats.readdir_bios, 230 nfsstats.readdir_bios); 231 printf(" %9d %9d\n", 232 nfsstats.direofcache_hits, nfsstats.direofcache_misses); 233 printf("\nServer Info:\n"); 234 printf("%9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s\n", 235 "Getattr", "Setattr", "Lookup", "Readlink", "Read", 236 "Write", "Create", "Remove"); 237 printf("%9d %9d %9d %9d %9d %9d %9d %9d\n", 238 nfsstats.srvrpccnt[NFSPROC_GETATTR], 239 nfsstats.srvrpccnt[NFSPROC_SETATTR], 240 nfsstats.srvrpccnt[NFSPROC_LOOKUP], 241 nfsstats.srvrpccnt[NFSPROC_READLINK], 242 nfsstats.srvrpccnt[NFSPROC_READ], 243 nfsstats.srvrpccnt[NFSPROC_WRITE], 244 nfsstats.srvrpccnt[NFSPROC_CREATE], 245 nfsstats.srvrpccnt[NFSPROC_REMOVE]); 246 printf("%9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s\n", 247 "Rename", "Link", "Symlink", "Mkdir", "Rmdir", 248 "Readdir", "RdirPlus", "Access"); 249 printf("%9d %9d %9d %9d %9d %9d %9d %9d\n", 250 nfsstats.srvrpccnt[NFSPROC_RENAME], 251 nfsstats.srvrpccnt[NFSPROC_LINK], 252 nfsstats.srvrpccnt[NFSPROC_SYMLINK], 253 nfsstats.srvrpccnt[NFSPROC_MKDIR], 254 nfsstats.srvrpccnt[NFSPROC_RMDIR], 255 nfsstats.srvrpccnt[NFSPROC_READDIR], 256 nfsstats.srvrpccnt[NFSPROC_READDIRPLUS], 257 nfsstats.srvrpccnt[NFSPROC_ACCESS]); 258 printf("%9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s\n", 259 "Mknod", "Fsstat", "Fsinfo", "PathConf", "Commit", 260 "GLease", "Vacate", "Evict"); 261 printf("%9d %9d %9d %9d %9d %9d %9d %9d\n", 262 nfsstats.srvrpccnt[NFSPROC_MKNOD], 263 nfsstats.srvrpccnt[NFSPROC_FSSTAT], 264 nfsstats.srvrpccnt[NFSPROC_FSINFO], 265 nfsstats.srvrpccnt[NFSPROC_PATHCONF], 266 nfsstats.srvrpccnt[NFSPROC_COMMIT], 267 nfsstats.srvrpccnt[NQNFSPROC_GETLEASE], 268 nfsstats.srvrpccnt[NQNFSPROC_VACATED], 269 nfsstats.srvrpccnt[NQNFSPROC_EVICTED]); 270 printf("Server Ret-Failed\n"); 271 printf("%17d\n", nfsstats.srvrpc_errs); 272 printf("Server Faults\n"); 273 printf("%13d\n", nfsstats.srv_errs); 274 printf("Server Cache Stats:\n"); 275 printf("%9.9s %9.9s %9.9s %9.9s\n", 276 "Inprog", "Idem", "Non-idem", "Misses"); 277 printf("%9d %9d %9d %9d\n", 278 nfsstats.srvcache_inproghits, 279 nfsstats.srvcache_idemdonehits, 280 nfsstats.srvcache_nonidemdonehits, 281 nfsstats.srvcache_misses); 282 printf("Server Lease Stats:\n"); 283 printf("%9.9s %9.9s %9.9s\n", 284 "Leases", "PeakL", "GLeases"); 285 printf("%9d %9d %9d\n", 286 nfsstats.srvnqnfs_leases, 287 nfsstats.srvnqnfs_maxleases, 288 nfsstats.srvnqnfs_getleases); 289 printf("Server Write Gathering:\n"); 290 printf("%9.9s %9.9s %9.9s\n", 291 "WriteOps", "WriteRPC", "Opsaved"); 292 printf("%9d %9d %9d\n", 293 nfsstats.srvvop_writes, 294 nfsstats.srvrpccnt[NFSPROC_WRITE], 295 nfsstats.srvrpccnt[NFSPROC_WRITE] - nfsstats.srvvop_writes); 296 } 297 298 u_char signalled; /* set if alarm goes off "early" */ 299 300 /* 301 * Print a running summary of nfs statistics. 302 * Repeat display every interval seconds, showing statistics 303 * collected over that interval. Assumes that interval is non-zero. 304 * First line printed at top of screen is always cumulative. 305 */ 306 void 307 sidewaysintpr(interval, off) 308 u_int interval; 309 u_long off; 310 { 311 struct nfsstats nfsstats, lastst; 312 int hdrcnt, oldmask; 313 314 (void)signal(SIGALRM, catchalarm); 315 signalled = 0; 316 (void)alarm(interval); 317 memset((caddr_t)&lastst, 0, sizeof(lastst)); 318 319 for (hdrcnt = 1;;) { 320 if (!--hdrcnt) { 321 printhdr(); 322 hdrcnt = 20; 323 } 324 if (kvm_read(kd, off, (char *)&nfsstats, sizeof nfsstats) < 0) 325 errx(1, "kvm_read failed"); 326 printf("Client: %8d %8d %8d %8d %8d %8d %8d %8d\n", 327 nfsstats.rpccnt[NFSPROC_GETATTR]-lastst.rpccnt[NFSPROC_GETATTR], 328 nfsstats.rpccnt[NFSPROC_LOOKUP]-lastst.rpccnt[NFSPROC_LOOKUP], 329 nfsstats.rpccnt[NFSPROC_READLINK]-lastst.rpccnt[NFSPROC_READLINK], 330 nfsstats.rpccnt[NFSPROC_READ]-lastst.rpccnt[NFSPROC_READ], 331 nfsstats.rpccnt[NFSPROC_WRITE]-lastst.rpccnt[NFSPROC_WRITE], 332 nfsstats.rpccnt[NFSPROC_RENAME]-lastst.rpccnt[NFSPROC_RENAME], 333 nfsstats.rpccnt[NFSPROC_ACCESS]-lastst.rpccnt[NFSPROC_ACCESS], 334 (nfsstats.rpccnt[NFSPROC_READDIR]-lastst.rpccnt[NFSPROC_READDIR]) 335 +(nfsstats.rpccnt[NFSPROC_READDIRPLUS]-lastst.rpccnt[NFSPROC_READDIRPLUS])); 336 printf("Server: %8d %8d %8d %8d %8d %8d %8d %8d\n", 337 nfsstats.srvrpccnt[NFSPROC_GETATTR]-lastst.srvrpccnt[NFSPROC_GETATTR], 338 nfsstats.srvrpccnt[NFSPROC_LOOKUP]-lastst.srvrpccnt[NFSPROC_LOOKUP], 339 nfsstats.srvrpccnt[NFSPROC_READLINK]-lastst.srvrpccnt[NFSPROC_READLINK], 340 nfsstats.srvrpccnt[NFSPROC_READ]-lastst.srvrpccnt[NFSPROC_READ], 341 nfsstats.srvrpccnt[NFSPROC_WRITE]-lastst.srvrpccnt[NFSPROC_WRITE], 342 nfsstats.srvrpccnt[NFSPROC_RENAME]-lastst.srvrpccnt[NFSPROC_RENAME], 343 nfsstats.srvrpccnt[NFSPROC_ACCESS]-lastst.srvrpccnt[NFSPROC_ACCESS], 344 (nfsstats.srvrpccnt[NFSPROC_READDIR]-lastst.srvrpccnt[NFSPROC_READDIR]) 345 +(nfsstats.srvrpccnt[NFSPROC_READDIRPLUS]-lastst.srvrpccnt[NFSPROC_READDIRPLUS])); 346 lastst = nfsstats; 347 fflush(stdout); 348 oldmask = sigblock(sigmask(SIGALRM)); 349 if (!signalled) 350 sigpause(0); 351 sigsetmask(oldmask); 352 signalled = 0; 353 (void)alarm(interval); 354 } 355 /*NOTREACHED*/ 356 } 357 358 void 359 printhdr() 360 { 361 printf(" %8.8s %8.8s %8.8s %8.8s %8.8s %8.8s %8.8s %8.8s\n", 362 "Getattr", "Lookup", "Readlink", "Read", "Write", "Rename", 363 "Access", "Readdir"); 364 fflush(stdout); 365 } 366 367 /* 368 * Called if an interval expires before sidewaysintpr has completed a loop. 369 * Sets a flag to not wait for the alarm. 370 */ 371 void 372 catchalarm(dummy) 373 int dummy; 374 { 375 signalled = 1; 376 } 377 378 void 379 usage() 380 { 381 (void)fprintf(stderr, 382 "usage: nfsstat [-M core] [-N system] [-w interval]\n"); 383 exit(1); 384 } 385
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