1 /* 2 * Copyright (c) 1983, 1989 Regents of the University of California. 3 * 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 * %sccs.include.redist.c% 9 */ 10 11 #ifndef lint 12 char copyright[] = 13 "@(#) Copyright (c) 1983, 1989 Regents of the University of California.\n\ 14 All rights reserved.\n"; 15 #endif /* not lint */ 16 17 #ifndef lint 18 static char sccsid[] = "@(#)nfsstat.c 5.8 (Berkeley) 04/23/91"; 19 #endif /* not lint */ 20 21 #include <sys/param.h> 22 #include <sys/vmmac.h> 23 #include <machine/pte.h> 24 #include <sys/namei.h> 25 #include <sys/mount.h> 26 #include <nfs/nfsv2.h> 27 #include <nfs/nfs.h> 28 #include <signal.h> 29 #include <fcntl.h> 30 #include <ctype.h> 31 #include <errno.h> 32 #include <nlist.h> 33 #include <unistd.h> 34 #include <stdio.h> 35 #include <stdlib.h> 36 #include <string.h> 37 #include <paths.h> 38 39 struct nlist nl[] = { 40 #define N_NFSSTAT 0 41 { "_nfsstats" }, 42 #define N_SYSMAP 1 43 { "_Sysmap" }, 44 #define N_SYSSIZE 2 45 { "_Syssize" }, 46 "", 47 }; 48 49 struct pte *Sysmap; 50 51 int kflag, kmem; 52 char *kernel = _PATH_UNIX; 53 char *kmemf = _PATH_KMEM; 54 55 off_t klseek(); 56 void intpr(), printhdr(), sidewaysintpr(), usage(); 57 58 main(argc, argv) 59 int argc; 60 char **argv; 61 { 62 extern int optind; 63 extern char *optarg; 64 u_int interval; 65 int ch; 66 67 interval = 0; 68 while ((ch = getopt(argc, argv, "M:N:w:")) != EOF) 69 switch(ch) { 70 case 'M': 71 kmemf = optarg; 72 kflag = 1; 73 break; 74 case 'N': 75 kernel = optarg; 76 break; 77 case 'w': 78 interval = atoi(optarg); 79 break; 80 case '?': 81 default: 82 usage(); 83 } 84 argc -= optind; 85 argv += optind; 86 87 #define BACKWARD_COMPATIBILITY 88 #ifdef BACKWARD_COMPATIBILITY 89 if (*argv) { 90 kernel = *++argv; 91 if (*++argv) { 92 kmemf = *argv; 93 kflag = 1; 94 } 95 } 96 #endif 97 if (nlist(kernel, nl) < 0 || nl[0].n_type == 0) { 98 (void)fprintf(stderr, "nfsstate: %s: no namelist\n", kernel); 99 exit(1); 100 } 101 kmem = open(kmemf, O_RDONLY); 102 if (kmem < 0) { 103 (void)fprintf(stderr, 104 "nfsstat: %s: %s\n", kmemf, strerror(errno)); 105 exit(1); 106 } 107 if (kflag) { 108 off_t off; 109 110 Sysmap = (struct pte *) 111 malloc((u_int)(nl[N_SYSSIZE].n_value * sizeof(struct pte))); 112 if (!Sysmap) { 113 (void)fprintf(stderr, "nfsstat: %s\n", strerror(errno)); 114 exit(1); 115 } 116 off = nl[N_SYSMAP].n_value & ~KERNBASE; 117 (void)lseek(kmem, off, L_SET); 118 (void)read(kmem, (char *)Sysmap, 119 (int)(nl[N_SYSSIZE].n_value * sizeof(struct pte))); 120 } 121 122 if (!nl[N_NFSSTAT].n_value) { 123 (void)fprintf(stderr, "nfsstat: nfsstats symbol not defined\n"); 124 exit(1); 125 } 126 if (interval) 127 sidewaysintpr(interval, nl[N_NFSSTAT].n_value); 128 else 129 intpr(nl[N_NFSSTAT].n_value); 130 exit(0); 131 } 132 133 /* 134 * Print a description of the network interfaces. 135 */ 136 void 137 intpr(nfsstataddr) 138 off_t nfsstataddr; 139 { 140 struct nfsstats nfsstats; 141 142 klseek(kmem, nfsstataddr, 0L); 143 read(kmem, (char *)&nfsstats, sizeof(struct nfsstats)); 144 printf("Client Info:\n"); 145 printf("Rpc Counts:\n"); 146 printf("%9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s\n", 147 "Getattr", "Setattr", "Lookup", "Readlink", "Read", 148 "Write", "Create", "Remove"); 149 printf("%9d %9d %9d %9d %9d %9d %9d %9d\n", 150 nfsstats.rpccnt[1], 151 nfsstats.rpccnt[2], 152 nfsstats.rpccnt[4], 153 nfsstats.rpccnt[5], 154 nfsstats.rpccnt[6], 155 nfsstats.rpccnt[8], 156 nfsstats.rpccnt[9], 157 nfsstats.rpccnt[10]); 158 printf("%9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s\n", 159 "Rename", "Link", "Symlink", "Mkdir", "Rmdir", 160 "Readdir", "Statfs"); 161 printf("%9d %9d %9d %9d %9d %9d %9d\n", 162 nfsstats.rpccnt[11], 163 nfsstats.rpccnt[12], 164 nfsstats.rpccnt[13], 165 nfsstats.rpccnt[14], 166 nfsstats.rpccnt[15], 167 nfsstats.rpccnt[16], 168 nfsstats.rpccnt[17]); 169 printf("Rpc Info:\n"); 170 printf("%9.9s %9.9s %9.9s %9.9s %9.9s\n", 171 "TimedOut", "Invalid", "X Replies", "Retries", "Requests"); 172 printf("%9d %9d %9d %9d %9d\n", 173 nfsstats.rpctimeouts, 174 nfsstats.rpcinvalid, 175 nfsstats.rpcunexpected, 176 nfsstats.rpcretries, 177 nfsstats.rpcrequests); 178 printf("Cache Info:\n"); 179 printf("%9.9s %9.9s %9.9s %9.9s", 180 "Attr Hits", "Misses", "Lkup Hits", "Misses"); 181 printf(" %9.9s %9.9s %9.9s %9.9s\n", 182 "BioR Hits", "Misses", "BioW Hits", "Misses"); 183 printf("%9d %9d %9d %9d", 184 nfsstats.attrcache_hits, nfsstats.attrcache_misses, 185 nfsstats.lookupcache_hits, nfsstats.lookupcache_misses); 186 printf(" %9d %9d %9d %9d\n", 187 nfsstats.biocache_reads-nfsstats.read_bios, 188 nfsstats.read_bios, 189 nfsstats.biocache_writes-nfsstats.write_bios, 190 nfsstats.write_bios); 191 printf("%9.9s %9.9s %9.9s %9.9s", 192 "BioRLHits", "Misses", "BioD Hits", "Misses"); 193 printf(" %9.9s %9.9s\n", "DirE Hits", "Misses"); 194 printf("%9d %9d %9d %9d", 195 nfsstats.biocache_readlinks-nfsstats.readlink_bios, 196 nfsstats.readlink_bios, 197 nfsstats.biocache_readdirs-nfsstats.readdir_bios, 198 nfsstats.readdir_bios); 199 printf(" %9d %9d\n", 200 nfsstats.direofcache_hits, nfsstats.direofcache_misses); 201 printf("\nServer Info:\n"); 202 printf("%9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s\n", 203 "Getattr", "Setattr", "Lookup", "Readlink", "Read", 204 "Write", "Create", "Remove"); 205 printf("%9d %9d %9d %9d %9d %9d %9d %9d\n", 206 nfsstats.srvrpccnt[1], 207 nfsstats.srvrpccnt[2], 208 nfsstats.srvrpccnt[4], 209 nfsstats.srvrpccnt[5], 210 nfsstats.srvrpccnt[6], 211 nfsstats.srvrpccnt[8], 212 nfsstats.srvrpccnt[9], 213 nfsstats.srvrpccnt[10]); 214 printf("%9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s\n", 215 "Rename", "Link", "Symlink", "Mkdir", "Rmdir", 216 "Readdir", "Statfs"); 217 printf("%9d %9d %9d %9d %9d %9d %9d\n", 218 nfsstats.srvrpccnt[11], 219 nfsstats.srvrpccnt[12], 220 nfsstats.srvrpccnt[13], 221 nfsstats.srvrpccnt[14], 222 nfsstats.srvrpccnt[15], 223 nfsstats.srvrpccnt[16], 224 nfsstats.srvrpccnt[17]); 225 printf("Server Ret-Failed\n"); 226 printf("%17d\n", nfsstats.srvrpc_errs); 227 printf("Server Faults\n"); 228 printf("%13d\n", nfsstats.srv_errs); 229 printf("Server Cache Stats:\n"); 230 printf("%9.9s %9.9s %9.9s %9.9s\n", 231 "Inprog", "Idem", "Non-idem", "Misses"); 232 printf("%9d %9d %9d %9d\n", 233 nfsstats.srvcache_inproghits, 234 nfsstats.srvcache_idemdonehits, 235 nfsstats.srvcache_nonidemdonehits, 236 nfsstats.srvcache_misses); 237 } 238 239 u_char signalled; /* set if alarm goes off "early" */ 240 241 /* 242 * Print a running summary of nfs statistics. 243 * Repeat display every interval seconds, showing statistics 244 * collected over that interval. Assumes that interval is non-zero. 245 * First line printed at top of screen is always cumulative. 246 */ 247 void 248 sidewaysintpr(interval, off) 249 u_int interval; 250 off_t off; 251 { 252 struct nfsstats nfsstats, lastst; 253 int hdrcnt, oldmask; 254 void catchalarm(); 255 256 klseek(kmem, off, 0L); 257 258 (void)signal(SIGALRM, catchalarm); 259 signalled = 0; 260 (void)alarm(interval); 261 bzero((caddr_t)&lastst, sizeof(lastst)); 262 263 for (hdrcnt = 1;;) { 264 if (!--hdrcnt) { 265 printhdr(); 266 hdrcnt = 20; 267 } 268 klseek(kmem, off, 0L); 269 read(kmem, (char *)&nfsstats, sizeof nfsstats); 270 printf("Client: %8d %8d %8d %8d %8d %8d %8d %8d\n", 271 nfsstats.rpccnt[1]-lastst.rpccnt[1], 272 nfsstats.rpccnt[4]-lastst.rpccnt[4], 273 nfsstats.rpccnt[5]-lastst.rpccnt[5], 274 nfsstats.rpccnt[6]-lastst.rpccnt[6], 275 nfsstats.rpccnt[8]-lastst.rpccnt[8], 276 nfsstats.rpccnt[11]-lastst.rpccnt[11], 277 nfsstats.rpccnt[12]-lastst.rpccnt[12], 278 nfsstats.rpccnt[16]-lastst.rpccnt[16]); 279 printf("Server: %8d %8d %8d %8d %8d %8d %8d %8d\n", 280 nfsstats.srvrpccnt[1]-lastst.srvrpccnt[1], 281 nfsstats.srvrpccnt[4]-lastst.srvrpccnt[4], 282 nfsstats.srvrpccnt[5]-lastst.srvrpccnt[5], 283 nfsstats.srvrpccnt[6]-lastst.srvrpccnt[6], 284 nfsstats.srvrpccnt[8]-lastst.srvrpccnt[8], 285 nfsstats.srvrpccnt[11]-lastst.srvrpccnt[11], 286 nfsstats.srvrpccnt[12]-lastst.srvrpccnt[12], 287 nfsstats.srvrpccnt[16]-lastst.srvrpccnt[16]); 288 lastst = nfsstats; 289 fflush(stdout); 290 oldmask = sigblock(sigmask(SIGALRM)); 291 if (!signalled) 292 sigpause(0); 293 sigsetmask(oldmask); 294 signalled = 0; 295 (void)alarm(interval); 296 } 297 /*NOTREACHED*/ 298 } 299 300 void 301 printhdr() 302 { 303 printf(" %8.8s %8.8s %8.8s %8.8s %8.8s %8.8s %8.8s %8.8s\n", 304 "Getattr", "Lookup", "Readlink", "Read", "Write", "Rename", 305 "Link", "Readdir"); 306 fflush(stdout); 307 } 308 309 /* 310 * Called if an interval expires before sidewaysintpr has completed a loop. 311 * Sets a flag to not wait for the alarm. 312 */ 313 void 314 catchalarm() 315 { 316 signalled = 1; 317 } 318 319 /* 320 * Seek into the kernel for a value. 321 */ 322 off_t 323 klseek(fd, base, off) 324 int fd, off; 325 off_t base; 326 { 327 if (kflag) { 328 /* get kernel pte */ 329 base &= ~KERNBASE; 330 base = ctob(Sysmap[btop(base)].pg_pfnum) + (base & PGOFSET); 331 } 332 return (lseek(fd, base, off)); 333 } 334 335 void 336 usage() 337 { 338 (void)fprintf(stderr, 339 "usage: nfsstat [-M core] [-N system] [-w interval]\n"); 340 exit(1); 341 } 342