1 /* $NetBSD: vmstat.c,v 1.97 2002/02/20 07:52:43 enami Exp $ */ 2 3 /*- 4 * Copyright (c) 1998, 2000, 2001 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation by: 8 * - Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 9 * NASA Ames Research Center. 10 * - Simon Burge and Luke Mewburn of Wasabi Systems, Inc. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 3. All advertising materials mentioning features or use of this software 21 * must display the following acknowledgement: 22 * This product includes software developed by the NetBSD 23 * Foundation, Inc. and its contributors. 24 * 4. Neither the name of The NetBSD Foundation nor the names of its 25 * contributors may be used to endorse or promote products derived 26 * from this software without specific prior written permission. 27 * 28 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 29 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 30 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 31 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 32 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 33 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 34 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 35 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 36 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 37 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 38 * POSSIBILITY OF SUCH DAMAGE. 39 */ 40 41 /* 42 * Copyright (c) 1980, 1986, 1991, 1993 43 * The Regents of the University of California. All rights reserved. 44 * 45 * Redistribution and use in source and binary forms, with or without 46 * modification, are permitted provided that the following conditions 47 * are met: 48 * 1. Redistributions of source code must retain the above copyright 49 * notice, this list of conditions and the following disclaimer. 50 * 2. Redistributions in binary form must reproduce the above copyright 51 * notice, this list of conditions and the following disclaimer in the 52 * documentation and/or other materials provided with the distribution. 53 * 3. All advertising materials mentioning features or use of this software 54 * must display the following acknowledgement: 55 * This product includes software developed by the University of 56 * California, Berkeley and its contributors. 57 * 4. Neither the name of the University nor the names of its contributors 58 * may be used to endorse or promote products derived from this software 59 * without specific prior written permission. 60 * 61 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 62 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 63 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 64 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 65 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 66 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 67 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 68 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 69 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 70 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 71 * SUCH DAMAGE. 72 */ 73 74 #include <sys/cdefs.h> 75 #ifndef lint 76 __COPYRIGHT("@(#) Copyright (c) 1980, 1986, 1991, 1993\n\ 77 The Regents of the University of California. All rights reserved.\n"); 78 #endif /* not lint */ 79 80 #ifndef lint 81 #if 0 82 static char sccsid[] = "@(#)vmstat.c 8.2 (Berkeley) 3/1/95"; 83 #else 84 __RCSID("$NetBSD: vmstat.c,v 1.97 2002/02/20 07:52:43 enami Exp $"); 85 #endif 86 #endif /* not lint */ 87 88 #define __POOL_EXPOSE 89 90 #include <sys/param.h> 91 #include <sys/mount.h> 92 #include <sys/uio.h> 93 94 #include <sys/buf.h> 95 #include <sys/device.h> 96 #include <sys/dkstat.h> 97 #include <sys/ioctl.h> 98 #include <sys/malloc.h> 99 #include <sys/namei.h> 100 #include <sys/pool.h> 101 #include <sys/proc.h> 102 #include <sys/sched.h> 103 #include <sys/socket.h> 104 #include <sys/sysctl.h> 105 #include <sys/time.h> 106 #include <sys/user.h> 107 108 #include <uvm/uvm_extern.h> 109 #include <uvm/uvm_stat.h> 110 111 #include <net/if.h> 112 #include <netinet/in.h> 113 #include <netinet/in_var.h> 114 115 #include <ufs/ufs/inode.h> 116 117 #include <nfs/rpcv2.h> 118 #include <nfs/nfsproto.h> 119 #include <nfs/nfsnode.h> 120 121 #include <ctype.h> 122 #include <err.h> 123 #include <errno.h> 124 #include <fcntl.h> 125 #include <kvm.h> 126 #include <limits.h> 127 #include <nlist.h> 128 #undef n_hash 129 #include <paths.h> 130 #include <signal.h> 131 #include <stdio.h> 132 #include <stddef.h> 133 #include <stdlib.h> 134 #include <string.h> 135 #include <time.h> 136 #include <unistd.h> 137 138 #include "dkstats.h" 139 140 /* 141 * General namelist 142 */ 143 struct nlist namelist[] = 144 { 145 #define X_BOOTTIME 0 146 { "_boottime" }, 147 #define X_HZ 1 148 { "_hz" }, 149 #define X_STATHZ 2 150 { "_stathz" }, 151 #define X_NCHSTATS 3 152 { "_nchstats" }, 153 #define X_INTRNAMES 4 154 { "_intrnames" }, 155 #define X_EINTRNAMES 5 156 { "_eintrnames" }, 157 #define X_INTRCNT 6 158 { "_intrcnt" }, 159 #define X_EINTRCNT 7 160 { "_eintrcnt" }, 161 #define X_KMEMSTAT 8 162 { "_kmemstats" }, 163 #define X_KMEMBUCKETS 9 164 { "_bucket" }, 165 #define X_ALLEVENTS 10 166 { "_allevents" }, 167 #define X_POOLHEAD 11 168 { "_pool_head" }, 169 #define X_UVMEXP 12 170 { "_uvmexp" }, 171 #define X_END 13 172 #if defined(pc532) 173 #define X_IVT (X_END) 174 { "_ivt" }, 175 #endif 176 { NULL }, 177 }; 178 179 /* 180 * Namelist for hash statistics 181 */ 182 struct nlist hashnl[] = 183 { 184 #define X_NFSNODE 0 185 { "_nfsnodehash" }, 186 #define X_NFSNODETBL 1 187 { "_nfsnodehashtbl" }, 188 #define X_IHASH 2 189 { "_ihash" }, 190 #define X_IHASHTBL 3 191 { "_ihashtbl" }, 192 #define X_BUFHASH 4 193 { "_bufhash" }, 194 #define X_BUFHASHTBL 5 195 { "_bufhashtbl" }, 196 #define X_PIDHASH 6 197 { "_pidhash" }, 198 #define X_PIDHASHTBL 7 199 { "_pidhashtbl" }, 200 #define X_PGRPHASH 8 201 { "_pgrphash" }, 202 #define X_PGRPHASHTBL 9 203 { "_pgrphashtbl" }, 204 #define X_UIHASH 10 205 { "_uihash" }, 206 #define X_UIHASHTBL 11 207 { "_uihashtbl" }, 208 #define X_IFADDRHASH 12 209 { "_in_ifaddrhash" }, 210 #define X_IFADDRHASHTBL 13 211 { "_in_ifaddrhashtbl" }, 212 #define X_NCHASH 14 213 { "_nchash" }, 214 #define X_NCHASHTBL 15 215 { "_nchashtbl" }, 216 #define X_NCVHASH 16 217 { "_ncvhash" }, 218 #define X_NCVHASHTBL 17 219 { "_ncvhashtbl" }, 220 #define X_HASHNL_SIZE 18 /* must be last */ 221 { NULL }, 222 223 }; 224 225 /* 226 * Namelist for UVM histories 227 */ 228 struct nlist histnl[] = 229 { 230 { "_uvm_histories" }, 231 #define X_UVM_HISTORIES 0 232 { NULL }, 233 }; 234 235 236 237 struct uvmexp uvmexp, ouvmexp; 238 int ndrives; 239 240 int winlines = 20; 241 242 kvm_t *kd; 243 244 #define FORKSTAT 1<<0 245 #define INTRSTAT 1<<1 246 #define MEMSTAT 1<<2 247 #define SUMSTAT 1<<3 248 #define EVCNTSTAT 1<<4 249 #define VMSTAT 1<<5 250 #define HISTLIST 1<<6 251 #define HISTDUMP 1<<7 252 #define HASHSTAT 1<<8 253 #define HASHLIST 1<<9 254 255 void cpustats(void); 256 void deref_kptr(const void *, void *, size_t, const char *); 257 void dkstats(void); 258 void doevcnt(int verbose); 259 void dohashstat(int, int, const char *); 260 void dointr(int verbose); 261 void domem(void); 262 void dopool(int); 263 void dopoolcache(struct pool *, int); 264 void dosum(void); 265 void dovmstat(u_int, int); 266 void kread(int, void *, size_t); 267 void needhdr(int); 268 long getuptime(void); 269 void printhdr(void); 270 long pct(long, long); 271 void usage(void); 272 void doforkst(void); 273 274 void hist_traverse(int, const char *); 275 void hist_dodump(struct uvm_history *); 276 277 int main(int, char **); 278 char **choosedrives(char **); 279 280 /* Namelist and memory file names. */ 281 char *nlistf, *memf; 282 283 /* allow old usage [vmstat 1] */ 284 #define BACKWARD_COMPATIBILITY 285 286 int 287 main(int argc, char *argv[]) 288 { 289 int c, todo, verbose; 290 u_int interval; 291 int reps; 292 char errbuf[_POSIX2_LINE_MAX]; 293 gid_t egid = getegid(); 294 const char *histname, *hashname; 295 296 histname = hashname = NULL; 297 (void)setegid(getgid()); 298 memf = nlistf = NULL; 299 interval = reps = todo = verbose = 0; 300 while ((c = getopt(argc, argv, "c:efh:HilLM:mN:suUvw:")) != -1) { 301 switch (c) { 302 case 'c': 303 reps = atoi(optarg); 304 break; 305 case 'e': 306 todo |= EVCNTSTAT; 307 break; 308 case 'f': 309 todo |= FORKSTAT; 310 break; 311 case 'h': 312 hashname = optarg; 313 /* FALLTHROUGH */ 314 case 'H': 315 todo |= HASHSTAT; 316 break; 317 case 'i': 318 todo |= INTRSTAT; 319 break; 320 case 'l': 321 todo |= HISTLIST; 322 break; 323 case 'L': 324 todo |= HASHLIST; 325 break; 326 case 'M': 327 memf = optarg; 328 break; 329 case 'm': 330 todo |= MEMSTAT; 331 break; 332 case 'N': 333 nlistf = optarg; 334 break; 335 case 's': 336 todo |= SUMSTAT; 337 break; 338 case 'u': 339 histname = optarg; 340 /* FALLTHROUGH */ 341 case 'U': 342 todo |= HISTDUMP; 343 break; 344 case 'v': 345 verbose++; 346 break; 347 case 'w': 348 interval = atoi(optarg); 349 break; 350 case '?': 351 default: 352 usage(); 353 } 354 } 355 argc -= optind; 356 argv += optind; 357 358 if (todo == 0) 359 todo = VMSTAT; 360 361 /* 362 * Discard setgid privileges. If not the running kernel, we toss 363 * them away totally so that bad guys can't print interesting stuff 364 * from kernel memory, otherwise switch back to kmem for the 365 * duration of the kvm_openfiles() call. 366 */ 367 if (nlistf != NULL || memf != NULL) 368 (void)setgid(getgid()); 369 else 370 (void)setegid(egid); 371 372 kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, errbuf); 373 if (kd == NULL) 374 errx(1, "kvm_openfiles: %s", errbuf); 375 376 if (nlistf == NULL && memf == NULL) 377 (void)setgid(getgid()); 378 379 if ((c = kvm_nlist(kd, namelist)) != 0) { 380 if (c == -1) 381 errx(1, "kvm_nlist: %s %s", "namelist", kvm_geterr(kd)); 382 (void)fprintf(stderr, "vmstat: undefined symbols:"); 383 for (c = 0; c < sizeof(namelist) / sizeof(namelist[0]); c++) 384 if (namelist[c].n_type == 0) 385 fprintf(stderr, " %s", namelist[c].n_name); 386 (void)fputc('\n', stderr); 387 exit(1); 388 } 389 if ((c = kvm_nlist(kd, hashnl)) == -1 || c == X_HASHNL_SIZE) 390 errx(1, "kvm_nlist: %s %s", "hashnl", kvm_geterr(kd)); 391 if (kvm_nlist(kd, histnl) == -1) 392 errx(1, "kvm_nlist: %s %s", "histnl", kvm_geterr(kd)); 393 394 if (todo & VMSTAT) { 395 struct winsize winsize; 396 397 dkinit(0); /* Initialize disk stats, no disks selected. */ 398 399 (void)setgid(getgid()); /* don't need privs anymore */ 400 401 argv = choosedrives(argv); /* Select disks. */ 402 winsize.ws_row = 0; 403 (void)ioctl(STDOUT_FILENO, TIOCGWINSZ, (char *)&winsize); 404 if (winsize.ws_row > 0) 405 winlines = winsize.ws_row; 406 407 } 408 409 #ifdef BACKWARD_COMPATIBILITY 410 if (*argv) { 411 interval = atoi(*argv); 412 if (*++argv) 413 reps = atoi(*argv); 414 } 415 #endif 416 417 if (interval) { 418 if (!reps) 419 reps = -1; 420 } else if (reps) 421 interval = 1; 422 423 424 /* 425 * Statistics dumping is incompatible with the default 426 * VMSTAT/dovmstat() output. So perform the interval/reps handling 427 * for it here. 428 */ 429 if ((todo & VMSTAT) == 0) { 430 for (;;) { 431 if (todo & (HISTLIST|HISTDUMP)) { 432 if ((todo & (HISTLIST|HISTDUMP)) == 433 (HISTLIST|HISTDUMP)) 434 errx(1, "you may list or dump, but not both!"); 435 hist_traverse(todo, histname); 436 putchar('\n'); 437 } 438 if (todo & FORKSTAT) { 439 doforkst(); 440 putchar('\n'); 441 } 442 if (todo & MEMSTAT) { 443 domem(); 444 dopool(verbose); 445 putchar('\n'); 446 } 447 if (todo & SUMSTAT) { 448 dosum(); 449 putchar('\n'); 450 } 451 if (todo & INTRSTAT) { 452 dointr(verbose); 453 putchar('\n'); 454 } 455 if (todo & EVCNTSTAT) { 456 doevcnt(verbose); 457 putchar('\n'); 458 } 459 if (todo & (HASHLIST|HASHSTAT)) { 460 if ((todo & (HASHLIST|HASHSTAT)) == (HASHLIST|HASHSTAT)) 461 errx(1, 462 "you may list or display, but not both!"); 463 dohashstat(verbose, todo, hashname); 464 putchar('\n'); 465 } 466 467 if (reps >= 0 && --reps <=0) 468 break; 469 sleep(interval); 470 } 471 } else 472 dovmstat(interval, reps); 473 exit(0); 474 } 475 476 char ** 477 choosedrives(char **argv) 478 { 479 int i; 480 481 /* 482 * Choose drives to be displayed. Priority goes to (in order) drives 483 * supplied as arguments, default drives. If everything isn't filled 484 * in and there are drives not taken care of, display the first few 485 * that fit. 486 */ 487 #define BACKWARD_COMPATIBILITY 488 for (ndrives = 0; *argv; ++argv) { 489 #ifdef BACKWARD_COMPATIBILITY 490 if (isdigit(**argv)) 491 break; 492 #endif 493 for (i = 0; i < dk_ndrive; i++) { 494 if (strcmp(dr_name[i], *argv)) 495 continue; 496 dk_select[i] = 1; 497 ++ndrives; 498 break; 499 } 500 } 501 for (i = 0; i < dk_ndrive && ndrives < 4; i++) { 502 if (dk_select[i]) 503 continue; 504 dk_select[i] = 1; 505 ++ndrives; 506 } 507 return (argv); 508 } 509 510 long 511 getuptime(void) 512 { 513 static time_t now; 514 static struct timeval boottime; 515 time_t uptime; 516 517 if (boottime.tv_sec == 0) 518 kread(X_BOOTTIME, &boottime, sizeof(boottime)); 519 (void)time(&now); 520 uptime = now - boottime.tv_sec; 521 if (uptime <= 0 || uptime > 60*60*24*365*10) 522 errx(1, "time makes no sense; namelist must be wrong."); 523 return (uptime); 524 } 525 526 int hz, hdrcnt; 527 528 void 529 dovmstat(u_int interval, int reps) 530 { 531 struct vmtotal total; 532 time_t uptime, halfuptime; 533 int mib[2]; 534 size_t size; 535 int pagesize = getpagesize(); 536 537 uptime = getuptime(); 538 halfuptime = uptime / 2; 539 (void)signal(SIGCONT, needhdr); 540 541 if (namelist[X_STATHZ].n_type != 0 && namelist[X_STATHZ].n_value != 0) 542 kread(X_STATHZ, &hz, sizeof(hz)); 543 if (!hz) 544 kread(X_HZ, &hz, sizeof(hz)); 545 546 for (hdrcnt = 1;;) { 547 if (!--hdrcnt) 548 printhdr(); 549 /* Read new disk statistics */ 550 dkreadstats(); 551 kread(X_UVMEXP, &uvmexp, sizeof(uvmexp)); 552 if (memf != NULL) { 553 /* 554 * XXX Can't do this if we're reading a crash 555 * XXX dump because they're lazily-calculated. 556 */ 557 printf("Unable to get vmtotals from crash dump.\n"); 558 memset(&total, 0, sizeof(total)); 559 } else { 560 size = sizeof(total); 561 mib[0] = CTL_VM; 562 mib[1] = VM_METER; 563 if (sysctl(mib, 2, &total, &size, NULL, 0) < 0) { 564 printf("Can't get vmtotals: %s\n", 565 strerror(errno)); 566 memset(&total, 0, sizeof(total)); 567 } 568 } 569 (void)printf("%2d%2d%2d", 570 total.t_rq - 1, total.t_dw + total.t_pw, total.t_sw); 571 #define pgtok(a) (long)((a) * (pagesize >> 10)) 572 #define rate(x) (u_long)(((x) + halfuptime) / uptime) /* round */ 573 (void)printf(" %5ld %5ld ", 574 pgtok(total.t_avm), pgtok(total.t_free)); 575 (void)printf("%4lu ", rate(uvmexp.faults - ouvmexp.faults)); 576 (void)printf("%3lu ", rate(uvmexp.pdreact - ouvmexp.pdreact)); 577 (void)printf("%3lu ", rate(uvmexp.pageins - ouvmexp.pageins)); 578 (void)printf("%4lu ", 579 rate(uvmexp.pgswapout - ouvmexp.pgswapout)); 580 (void)printf("%4lu ", rate(uvmexp.pdfreed - ouvmexp.pdfreed)); 581 (void)printf("%4lu ", rate(uvmexp.pdscans - ouvmexp.pdscans)); 582 dkstats(); 583 (void)printf("%4lu %4lu %3lu ", 584 rate(uvmexp.intrs - ouvmexp.intrs), 585 rate(uvmexp.syscalls - ouvmexp.syscalls), 586 rate(uvmexp.swtch - ouvmexp.swtch)); 587 cpustats(); 588 putchar('\n'); 589 (void)fflush(stdout); 590 if (reps >= 0 && --reps <= 0) 591 break; 592 ouvmexp = uvmexp; 593 uptime = interval; 594 /* 595 * We round upward to avoid losing low-frequency events 596 * (i.e., >= 1 per interval but < 1 per second). 597 */ 598 halfuptime = uptime == 1 ? 0 : (uptime + 1) / 2; 599 (void)sleep(interval); 600 } 601 } 602 603 void 604 printhdr(void) 605 { 606 int i; 607 608 (void)printf(" procs memory page%*s", 23, ""); 609 if (ndrives > 0) 610 (void)printf("%s %*sfaults cpu\n", 611 ((ndrives > 1) ? "disks" : "disk"), 612 ((ndrives > 1) ? ndrives * 3 - 4 : 0), ""); 613 else 614 (void)printf("%*s faults cpu\n", 615 ndrives * 3, ""); 616 617 (void)printf(" r b w avm fre flt re pi po fr sr "); 618 for (i = 0; i < dk_ndrive; i++) 619 if (dk_select[i]) 620 (void)printf("%c%c ", dr_name[i][0], 621 dr_name[i][strlen(dr_name[i]) - 1]); 622 (void)printf(" in sy cs us sy id\n"); 623 hdrcnt = winlines - 2; 624 } 625 626 /* 627 * Force a header to be prepended to the next output. 628 */ 629 void 630 needhdr(int dummy) 631 { 632 633 hdrcnt = 1; 634 } 635 636 long 637 pct(long top, long bot) 638 { 639 long ans; 640 641 if (bot == 0) 642 return (0); 643 ans = (quad_t)top * 100 / bot; 644 return (ans); 645 } 646 647 #define PCT(top, bot) (int)pct((long)(top), (long)(bot)) 648 649 void 650 dosum(void) 651 { 652 struct nchstats nchstats; 653 long nchtotal; 654 655 kread(X_UVMEXP, &uvmexp, sizeof(uvmexp)); 656 657 (void)printf("%9u bytes per page\n", uvmexp.pagesize); 658 659 (void)printf("%9u page color%s\n", 660 uvmexp.ncolors, uvmexp.ncolors == 1 ? "" : "s"); 661 662 (void)printf("%9u pages managed\n", uvmexp.npages); 663 (void)printf("%9u pages free\n", uvmexp.free); 664 (void)printf("%9u pages active\n", uvmexp.active); 665 (void)printf("%9u pages inactive\n", uvmexp.inactive); 666 (void)printf("%9u pages paging\n", uvmexp.paging); 667 (void)printf("%9u pages wired\n", uvmexp.wired); 668 (void)printf("%9u zero pages\n", uvmexp.zeropages); 669 (void)printf("%9u reserve pagedaemon pages\n", 670 uvmexp.reserve_pagedaemon); 671 (void)printf("%9u reserve kernel pages\n", uvmexp.reserve_kernel); 672 (void)printf("%9u anonymous pages\n", uvmexp.anonpages); 673 (void)printf("%9u cached file pages\n", uvmexp.filepages); 674 (void)printf("%9u cached executable pages\n", uvmexp.execpages); 675 676 (void)printf("%9u minimum free pages\n", uvmexp.freemin); 677 (void)printf("%9u target free pages\n", uvmexp.freetarg); 678 (void)printf("%9u target inactive pages\n", uvmexp.inactarg); 679 (void)printf("%9u maximum wired pages\n", uvmexp.wiredmax); 680 681 (void)printf("%9u swap devices\n", uvmexp.nswapdev); 682 (void)printf("%9u swap pages\n", uvmexp.swpages); 683 (void)printf("%9u swap pages in use\n", uvmexp.swpginuse); 684 (void)printf("%9u swap allocations\n", uvmexp.nswget); 685 (void)printf("%9u anons\n", uvmexp.nanon); 686 (void)printf("%9u free anons\n", uvmexp.nfreeanon); 687 688 (void)printf("%9u total faults taken\n", uvmexp.faults); 689 (void)printf("%9u traps\n", uvmexp.traps); 690 (void)printf("%9u device interrupts\n", uvmexp.intrs); 691 (void)printf("%9u cpu context switches\n", uvmexp.swtch); 692 (void)printf("%9u software interrupts\n", uvmexp.softs); 693 (void)printf("%9u system calls\n", uvmexp.syscalls); 694 (void)printf("%9u pagein requests\n", uvmexp.pageins); 695 (void)printf("%9u pageout requests\n", uvmexp.pdpageouts); 696 (void)printf("%9u swap ins\n", uvmexp.swapins); 697 (void)printf("%9u swap outs\n", uvmexp.swapouts); 698 (void)printf("%9u pages swapped in\n", uvmexp.pgswapin); 699 (void)printf("%9u pages swapped out\n", uvmexp.pgswapout); 700 (void)printf("%9u forks total\n", uvmexp.forks); 701 (void)printf("%9u forks blocked parent\n", uvmexp.forks_ppwait); 702 (void)printf("%9u forks shared address space with parent\n", 703 uvmexp.forks_sharevm); 704 (void)printf("%9u pagealloc zero wanted and avail\n", 705 uvmexp.pga_zerohit); 706 (void)printf("%9u pagealloc zero wanted and not avail\n", 707 uvmexp.pga_zeromiss); 708 (void)printf("%9u aborts of idle page zeroing\n", 709 uvmexp.zeroaborts); 710 (void)printf("%9u pagealloc desired color avail\n", 711 uvmexp.colorhit); 712 (void)printf("%9u pagealloc desired color not avail\n", 713 uvmexp.colormiss); 714 715 (void)printf("%9u faults with no memory\n", uvmexp.fltnoram); 716 (void)printf("%9u faults with no anons\n", uvmexp.fltnoanon); 717 (void)printf("%9u faults had to wait on pages\n", uvmexp.fltpgwait); 718 (void)printf("%9u faults found released page\n", uvmexp.fltpgrele); 719 (void)printf("%9u faults relock (%u ok)\n", uvmexp.fltrelck, 720 uvmexp.fltrelckok); 721 (void)printf("%9u anon page faults\n", uvmexp.fltanget); 722 (void)printf("%9u anon retry faults\n", uvmexp.fltanretry); 723 (void)printf("%9u amap copy faults\n", uvmexp.fltamcopy); 724 (void)printf("%9u neighbour anon page faults\n", uvmexp.fltnamap); 725 (void)printf("%9u neighbour object page faults\n", uvmexp.fltnomap); 726 (void)printf("%9u locked pager get faults\n", uvmexp.fltlget); 727 (void)printf("%9u unlocked pager get faults\n", uvmexp.fltget); 728 (void)printf("%9u anon faults\n", uvmexp.flt_anon); 729 (void)printf("%9u anon copy on write faults\n", uvmexp.flt_acow); 730 (void)printf("%9u object faults\n", uvmexp.flt_obj); 731 (void)printf("%9u promote copy faults\n", uvmexp.flt_prcopy); 732 (void)printf("%9u promote zero fill faults\n", uvmexp.flt_przero); 733 734 (void)printf("%9u times daemon wokeup\n",uvmexp.pdwoke); 735 (void)printf("%9u revolutions of the clock hand\n", uvmexp.pdrevs); 736 (void)printf("%9u times daemon attempted swapout\n", uvmexp.pdswout); 737 (void)printf("%9u pages freed by daemon\n", uvmexp.pdfreed); 738 (void)printf("%9u pages scanned by daemon\n", uvmexp.pdscans); 739 (void)printf("%9u anonymous pages scanned by daemon\n", 740 uvmexp.pdanscan); 741 (void)printf("%9u object pages scanned by daemon\n", uvmexp.pdobscan); 742 (void)printf("%9u pages reactivated\n", uvmexp.pdreact); 743 (void)printf("%9u pages found busy by daemon\n", uvmexp.pdbusy); 744 (void)printf("%9u total pending pageouts\n", uvmexp.pdpending); 745 (void)printf("%9u pages deactivated\n", uvmexp.pddeact); 746 kread(X_NCHSTATS, &nchstats, sizeof(nchstats)); 747 nchtotal = nchstats.ncs_goodhits + nchstats.ncs_neghits + 748 nchstats.ncs_badhits + nchstats.ncs_falsehits + 749 nchstats.ncs_miss + nchstats.ncs_long; 750 (void)printf("%9ld total name lookups\n", nchtotal); 751 (void)printf( 752 "%9s cache hits (%d%% pos + %d%% neg) system %d%% per-process\n", 753 "", PCT(nchstats.ncs_goodhits, nchtotal), 754 PCT(nchstats.ncs_neghits, nchtotal), 755 PCT(nchstats.ncs_pass2, nchtotal)); 756 (void)printf("%9s deletions %d%%, falsehits %d%%, toolong %d%%\n", "", 757 PCT(nchstats.ncs_badhits, nchtotal), 758 PCT(nchstats.ncs_falsehits, nchtotal), 759 PCT(nchstats.ncs_long, nchtotal)); 760 } 761 762 void 763 doforkst(void) 764 { 765 766 kread(X_UVMEXP, &uvmexp, sizeof(uvmexp)); 767 768 (void)printf("%u forks total\n", uvmexp.forks); 769 (void)printf("%u forks blocked parent\n", uvmexp.forks_ppwait); 770 (void)printf("%u forks shared address space with parent\n", 771 uvmexp.forks_sharevm); 772 } 773 774 void 775 dkstats(void) 776 { 777 int dn, state; 778 double etime; 779 780 /* Calculate disk stat deltas. */ 781 dkswap(); 782 etime = 0; 783 for (state = 0; state < CPUSTATES; ++state) { 784 etime += cur.cp_time[state]; 785 } 786 if (etime == 0) 787 etime = 1; 788 etime /= hz; 789 for (dn = 0; dn < dk_ndrive; ++dn) { 790 if (!dk_select[dn]) 791 continue; 792 (void)printf("%2.0f ", cur.dk_xfer[dn] / etime); 793 } 794 } 795 796 void 797 cpustats(void) 798 { 799 int state; 800 double pct, total; 801 802 total = 0; 803 for (state = 0; state < CPUSTATES; ++state) 804 total += cur.cp_time[state]; 805 if (total) 806 pct = 100 / total; 807 else 808 pct = 0; 809 (void)printf("%2.0f ", 810 (cur.cp_time[CP_USER] + cur.cp_time[CP_NICE]) * pct); 811 (void)printf("%2.0f ", 812 (cur.cp_time[CP_SYS] + cur.cp_time[CP_INTR]) * pct); 813 (void)printf("%2.0f", cur.cp_time[CP_IDLE] * pct); 814 } 815 816 #if defined(pc532) 817 /* To get struct iv ...*/ 818 #define _KERNEL 819 #include <machine/psl.h> 820 #undef _KERNEL 821 void 822 dointr(int verbose) 823 { 824 long i, j, inttotal, uptime; 825 static char iname[64]; 826 struct iv ivt[32], *ivp = ivt; 827 828 iname[sizeof(iname)-1] = '\0'; 829 uptime = getuptime(); 830 kread(X_IVT, ivp, sizeof(ivt)); 831 832 for (i = 0; i < 2; i++) { 833 (void)printf("%sware interrupts:\n", i ? "\nsoft" : "hard"); 834 (void)printf("interrupt total rate\n"); 835 inttotal = 0; 836 for (j = 0; j < 16; j++, ivp++) { 837 if (ivp->iv_vec && ivp->iv_use && 838 (ivp->iv_cnt || verbose)) { 839 deref_kptr(ivp->iv_use, iname, sizeof(iname)-1, 840 "iv_use"); 841 (void)printf("%-12s %8ld %8ld\n", iname, 842 ivp->iv_cnt, ivp->iv_cnt / uptime); 843 inttotal += ivp->iv_cnt; 844 } 845 } 846 (void)printf("Total %8ld %8ld\n", 847 inttotal, inttotal / uptime); 848 } 849 } 850 #else 851 void 852 dointr(int verbose) 853 { 854 unsigned long *intrcnt; 855 unsigned long long inttotal, uptime; 856 int nintr, inamlen; 857 char *intrname; 858 struct evcntlist allevents; 859 struct evcnt evcnt, *evptr; 860 char evgroup[EVCNT_STRING_MAX], evname[EVCNT_STRING_MAX]; 861 862 uptime = getuptime(); 863 nintr = namelist[X_EINTRCNT].n_value - namelist[X_INTRCNT].n_value; 864 inamlen = 865 namelist[X_EINTRNAMES].n_value - namelist[X_INTRNAMES].n_value; 866 intrcnt = malloc((size_t)nintr); 867 intrname = malloc((size_t)inamlen); 868 if (intrcnt == NULL || intrname == NULL) 869 errx(1, "%s", ""); 870 kread(X_INTRCNT, intrcnt, (size_t)nintr); 871 kread(X_INTRNAMES, intrname, (size_t)inamlen); 872 (void)printf("%-34s %16s %8s\n", "interrupt", "total", "rate"); 873 inttotal = 0; 874 nintr /= sizeof(long); 875 while (--nintr >= 0) { 876 if (*intrcnt || verbose) 877 (void)printf("%-34s %16llu %8llu\n", intrname, 878 (unsigned long long)*intrcnt, 879 (unsigned long long)(*intrcnt / uptime)); 880 intrname += strlen(intrname) + 1; 881 inttotal += *intrcnt++; 882 } 883 kread(X_ALLEVENTS, &allevents, sizeof allevents); 884 evptr = allevents.tqh_first; 885 while (evptr) { 886 deref_kptr(evptr, &evcnt, sizeof(evcnt), "event chain trashed"); 887 evptr = evcnt.ev_list.tqe_next; 888 if (evcnt.ev_type != EVCNT_TYPE_INTR) 889 continue; 890 891 if (evcnt.ev_count == 0 && !verbose) 892 continue; 893 894 deref_kptr(evcnt.ev_group, evgroup, evcnt.ev_grouplen + 1, 895 "event chain trashed"); 896 deref_kptr(evcnt.ev_name, evname, evcnt.ev_namelen + 1, 897 "event chain trashed"); 898 899 (void)printf("%s %s%*s %16llu %8llu\n", evgroup, evname, 900 34 - (evcnt.ev_grouplen + 1 + evcnt.ev_namelen), "", 901 (unsigned long long)evcnt.ev_count, 902 (unsigned long long)(evcnt.ev_count / uptime)); 903 904 inttotal += evcnt.ev_count++; 905 } 906 (void)printf("%-34s %16llu %8llu\n", "Total", inttotal, 907 (unsigned long long)(inttotal / uptime)); 908 } 909 #endif 910 911 void 912 doevcnt(int verbose) 913 { 914 static const char * evtypes [] = { "misc", "intr", "trap" }; 915 unsigned long long uptime; 916 struct evcntlist allevents; 917 struct evcnt evcnt, *evptr; 918 char evgroup[EVCNT_STRING_MAX], evname[EVCNT_STRING_MAX]; 919 920 /* XXX should print type! */ 921 922 uptime = getuptime(); 923 (void)printf("%-34s %16s %8s %s\n", "event", "total", "rate", "type"); 924 kread(X_ALLEVENTS, &allevents, sizeof allevents); 925 evptr = allevents.tqh_first; 926 while (evptr) { 927 deref_kptr(evptr, &evcnt, sizeof(evcnt), "event chain trashed"); 928 929 evptr = evcnt.ev_list.tqe_next; 930 if (evcnt.ev_count == 0 && !verbose) 931 continue; 932 933 deref_kptr(evcnt.ev_group, evgroup, evcnt.ev_grouplen + 1, 934 "event chain trashed"); 935 deref_kptr(evcnt.ev_name, evname, evcnt.ev_namelen + 1, 936 "event chain trashed"); 937 938 (void)printf("%s %s%*s %16llu %8llu %s\n", evgroup, evname, 939 34 - (evcnt.ev_grouplen + 1 + evcnt.ev_namelen), "", 940 (unsigned long long)evcnt.ev_count, 941 (unsigned long long)(evcnt.ev_count / uptime), 942 (evcnt.ev_type < sizeof(evtypes)/sizeof(evtypes[0]) ? 943 evtypes[evcnt.ev_type] : "?")); 944 } 945 } 946 947 /* 948 * These names are defined in <sys/malloc.h>. 949 */ 950 char *kmemnames[] = INITKMEMNAMES; 951 952 void 953 domem(void) 954 { 955 struct kmembuckets *kp; 956 struct kmemstats *ks; 957 int i, j; 958 int len, size, first; 959 long totuse = 0, totfree = 0, totreq = 0; 960 char *name; 961 struct kmemstats kmemstats[M_LAST]; 962 struct kmembuckets buckets[MINBUCKET + 16]; 963 964 kread(X_KMEMBUCKETS, buckets, sizeof(buckets)); 965 for (first = 1, i = MINBUCKET, kp = &buckets[i]; i < MINBUCKET + 16; 966 i++, kp++) { 967 if (kp->kb_calls == 0) 968 continue; 969 if (first) { 970 (void)printf("Memory statistics by bucket size\n"); 971 (void)printf( 972 " Size In Use Free Requests HighWater Couldfree\n"); 973 first = 0; 974 } 975 size = 1 << i; 976 (void)printf("%8d %8ld %6ld %10ld %7ld %10ld\n", size, 977 kp->kb_total - kp->kb_totalfree, 978 kp->kb_totalfree, kp->kb_calls, 979 kp->kb_highwat, kp->kb_couldfree); 980 totfree += size * kp->kb_totalfree; 981 } 982 983 /* 984 * If kmem statistics are not being gathered by the kernel, 985 * first will still be 1. 986 */ 987 if (first) { 988 warnx("Kmem statistics are not being gathered by the kernel."); 989 return; 990 } 991 992 kread(X_KMEMSTAT, kmemstats, sizeof(kmemstats)); 993 (void)printf("\nMemory usage type by bucket size\n"); 994 (void)printf(" Size Type(s)\n"); 995 kp = &buckets[MINBUCKET]; 996 for (j = 1 << MINBUCKET; j < 1 << (MINBUCKET + 16); j <<= 1, kp++) { 997 if (kp->kb_calls == 0) 998 continue; 999 first = 1; 1000 len = 8; 1001 for (i = 0, ks = &kmemstats[0]; i < M_LAST; i++, ks++) { 1002 if (ks->ks_calls == 0) 1003 continue; 1004 if ((ks->ks_size & j) == 0) 1005 continue; 1006 if (kmemnames[i] == 0) { 1007 kmemnames[i] = malloc(10); 1008 /* strlen("undef/")+3+1);*/ 1009 snprintf(kmemnames[i], 10, "undef/%d", i); 1010 /* same 10 as above!!! */ 1011 } 1012 name = kmemnames[i]; 1013 len += 2 + strlen(name); 1014 if (first) 1015 printf("%8d %s", j, name); 1016 else 1017 printf(","); 1018 if (len >= 80) { 1019 printf("\n\t "); 1020 len = 10 + strlen(name); 1021 } 1022 if (!first) 1023 printf(" %s", name); 1024 first = 0; 1025 } 1026 putchar('\n'); 1027 } 1028 1029 (void)printf( 1030 "\nMemory statistics by type Type Kern\n"); 1031 (void)printf( 1032 " Type InUse MemUse HighUse Limit Requests Limit Limit Size(s)\n"); 1033 for (i = 0, ks = &kmemstats[0]; i < M_LAST; i++, ks++) { 1034 if (ks->ks_calls == 0) 1035 continue; 1036 (void)printf("%14s%6ld%6ldK%7ldK%6ldK%9ld%5u%6u", 1037 kmemnames[i] ? kmemnames[i] : "undefined", 1038 ks->ks_inuse, (ks->ks_memuse + 1023) / 1024, 1039 (ks->ks_maxused + 1023) / 1024, 1040 (ks->ks_limit + 1023) / 1024, ks->ks_calls, 1041 ks->ks_limblocks, ks->ks_mapblocks); 1042 first = 1; 1043 for (j = 1 << MINBUCKET; j < 1 << (MINBUCKET + 16); j <<= 1) { 1044 if ((ks->ks_size & j) == 0) 1045 continue; 1046 if (first) 1047 printf(" %d", j); 1048 else 1049 printf(",%d", j); 1050 first = 0; 1051 } 1052 printf("\n"); 1053 totuse += ks->ks_memuse; 1054 totreq += ks->ks_calls; 1055 } 1056 (void)printf("\nMemory Totals: In Use Free Requests\n"); 1057 (void)printf(" %7ldK %6ldK %8ld\n", 1058 (totuse + 1023) / 1024, (totfree + 1023) / 1024, totreq); 1059 } 1060 1061 void 1062 dopool(int verbose) 1063 { 1064 int first, ovflw; 1065 void *addr; 1066 long total = 0, inuse = 0; 1067 TAILQ_HEAD(,pool) pool_head; 1068 struct pool pool, *pp = &pool; 1069 char name[32], maxp[32]; 1070 1071 kread(X_POOLHEAD, &pool_head, sizeof(pool_head)); 1072 addr = TAILQ_FIRST(&pool_head); 1073 1074 for (first = 1; addr != NULL; ) { 1075 deref_kptr(addr, pp, sizeof(*pp), "pool chain trashed"); 1076 deref_kptr(pp->pr_wchan, name, sizeof(name), 1077 "pool chain trashed"); 1078 name[sizeof(name)-1] = '\0'; 1079 1080 if (first) { 1081 (void)printf("Memory resource pool statistics\n"); 1082 (void)printf( 1083 "%-11s%5s%9s%5s%9s%6s%6s%6s%6s%6s%6s%5s\n", 1084 "Name", 1085 "Size", 1086 "Requests", 1087 "Fail", 1088 "Releases", 1089 "Pgreq", 1090 "Pgrel", 1091 "Npage", 1092 "Hiwat", 1093 "Minpg", 1094 "Maxpg", 1095 "Idle"); 1096 first = 0; 1097 } 1098 if (pp->pr_maxpages == UINT_MAX) 1099 sprintf(maxp, "inf"); 1100 else 1101 sprintf(maxp, "%u", pp->pr_maxpages); 1102 /* 1103 * Print single word. `ovflow' is number of characters didn't fit 1104 * on the last word. `fmt' is a format string to print this word. 1105 * It must contain asterisk for field width. `width' is a width 1106 * occupied by this word. `fixed' is a number of constant chars in 1107 * `fmt'. `val' is a value to be printed using format string `fmt'. 1108 */ 1109 #define PRWORD(ovflw, fmt, width, fixed, val) do { \ 1110 (ovflw) += printf((fmt), \ 1111 (width) - (fixed) - (ovflw) > 0 ? \ 1112 (width) - (fixed) - (ovflw) : 0, \ 1113 (val)) - (width); \ 1114 if ((ovflw) < 0) \ 1115 (ovflw) = 0; \ 1116 } while (/* CONSTCOND */0) 1117 ovflw = 0; 1118 PRWORD(ovflw, "%-*s", 11, 0, name); 1119 PRWORD(ovflw, " %*u", 5, 1, pp->pr_size); 1120 PRWORD(ovflw, " %*lu", 9, 1, pp->pr_nget); 1121 PRWORD(ovflw, " %*lu", 5, 1, pp->pr_nfail); 1122 PRWORD(ovflw, " %*lu", 9, 1, pp->pr_nput); 1123 PRWORD(ovflw, " %*lu", 6, 1, pp->pr_npagealloc); 1124 PRWORD(ovflw, " %*lu", 6, 1, pp->pr_npagefree); 1125 PRWORD(ovflw, " %*d", 6, 1, pp->pr_npages); 1126 PRWORD(ovflw, " %*d", 6, 1, pp->pr_hiwat); 1127 PRWORD(ovflw, " %*d", 6, 1, pp->pr_minpages); 1128 PRWORD(ovflw, " %*s", 6, 1, maxp); 1129 PRWORD(ovflw, " %*lu\n", 5, 1, pp->pr_nidle); 1130 1131 if (pp->pr_roflags & PR_RECURSIVE) { 1132 /* 1133 * Don't count in-use memory, since it's part 1134 * of another pool and will be accounted for 1135 * there. 1136 */ 1137 total += pp->pr_npages * pp->pr_pagesz - 1138 (pp->pr_nget - pp->pr_nput) * pp->pr_size; 1139 } else { 1140 inuse += (pp->pr_nget - pp->pr_nput) * pp->pr_size; 1141 total += pp->pr_npages * pp->pr_pagesz; 1142 } 1143 dopoolcache(pp, verbose); 1144 addr = TAILQ_NEXT(pp, pr_poollist); 1145 } 1146 1147 inuse /= 1024; 1148 total /= 1024; 1149 printf("\nIn use %ldK, total allocated %ldK; utilization %.1f%%\n", 1150 inuse, total, (double)(100 * inuse) / total); 1151 } 1152 1153 #ifndef PCG_NOBJECTS 1154 /* The pool cache group. */ 1155 #define PCG_NOBJECTS 16 1156 struct pool_cache_group { 1157 TAILQ_ENTRY(pool_cache_group) 1158 pcg_list; /* link in the pool cache's group list */ 1159 u_int pcg_avail; /* # available objects */ 1160 /* pointers to the objects */ 1161 void *pcg_objects[PCG_NOBJECTS]; 1162 }; 1163 #endif 1164 1165 void 1166 dopoolcache(struct pool *pp, int verbose) 1167 { 1168 struct pool_cache pool_cache, *pc = &pool_cache; 1169 struct pool_cache_group pool_cache_group, *pcg = &pool_cache_group; 1170 void *addr, *pcg_addr; 1171 int i; 1172 1173 if (verbose < 1) 1174 return; 1175 1176 for (addr = TAILQ_FIRST(&pp->pr_cachelist); addr != NULL; 1177 addr = TAILQ_NEXT(pc, pc_poollist)) { 1178 deref_kptr(addr, pc, sizeof(*pc), "pool cache trashed"); 1179 printf("\tcache %p: allocfrom %p freeto %p\n", addr, 1180 pc->pc_allocfrom, pc->pc_freeto); 1181 printf("\t hits %lu misses %lu ngroups %lu nitems %lu\n", 1182 pc->pc_hits, pc->pc_misses, pc->pc_ngroups, pc->pc_nitems); 1183 if (verbose < 2) 1184 continue; 1185 for (pcg_addr = TAILQ_FIRST(&pc->pc_grouplist); 1186 pcg_addr != NULL; pcg_addr = TAILQ_NEXT(pcg, pcg_list)) { 1187 deref_kptr(pcg_addr, pcg, sizeof(*pcg), 1188 "pool cache group trashed"); 1189 printf("\t\tgroup %p: avail %d\n", pcg_addr, 1190 pcg->pcg_avail); 1191 for (i = 0; i < PCG_NOBJECTS; i++) 1192 printf("\t\t\t%p\n", pcg->pcg_objects[i]); 1193 } 1194 } 1195 1196 } 1197 1198 enum hashtype { /* from <sys/systm.h> */ 1199 HASH_LIST, 1200 HASH_TAILQ 1201 }; 1202 1203 struct uidinfo { /* XXX: no kernel header file */ 1204 LIST_ENTRY(uidinfo) ui_hash; 1205 uid_t ui_uid; 1206 long ui_proccnt; 1207 }; 1208 1209 struct kernel_hash { 1210 const char * description; /* description */ 1211 int hashsize; /* nlist index for hash size */ 1212 int hashtbl; /* nlist index for hash table */ 1213 enum hashtype type; /* type of hash table */ 1214 size_t offset; /* offset of {LIST,TAILQ}_NEXT */ 1215 } khashes[] = 1216 { 1217 { 1218 "buffer hash", 1219 X_BUFHASH, X_BUFHASHTBL, 1220 HASH_LIST, offsetof(struct buf, b_hash) 1221 }, { 1222 "inode cache (ihash)", 1223 X_IHASH, X_IHASHTBL, 1224 HASH_LIST, offsetof(struct inode, i_hash) 1225 }, { 1226 "ipv4 address -> interface hash", 1227 X_IFADDRHASH, X_IFADDRHASHTBL, 1228 HASH_LIST, offsetof(struct in_ifaddr, ia_hash), 1229 }, { 1230 "name cache hash", 1231 X_NCHASH, X_NCHASHTBL, 1232 HASH_LIST, offsetof(struct namecache, nc_hash), 1233 }, { 1234 "name cache directory hash", 1235 X_NCVHASH, X_NCVHASHTBL, 1236 HASH_LIST, offsetof(struct namecache, nc_vhash), 1237 }, { 1238 "nfs client node cache", 1239 X_NFSNODE, X_NFSNODETBL, 1240 HASH_LIST, offsetof(struct nfsnode, n_hash) 1241 }, { 1242 "process group (pgrp) hash", 1243 X_PGRPHASH, X_PGRPHASHTBL, 1244 HASH_LIST, offsetof(struct pgrp, pg_hash), 1245 }, { 1246 "process id (pid) hash", 1247 X_PIDHASH, X_PIDHASHTBL, 1248 HASH_LIST, offsetof(struct proc, p_hash) 1249 }, { 1250 "user info (uid -> used processes) hash", 1251 X_UIHASH, X_UIHASHTBL, 1252 HASH_LIST, offsetof(struct uidinfo, ui_hash), 1253 }, { 1254 NULL, -1, -1, 0, 0, 1255 } 1256 }; 1257 1258 void 1259 dohashstat(int verbose, int todo, const char *hashname) 1260 { 1261 LIST_HEAD(, generic) *hashtbl_list; 1262 TAILQ_HEAD(, generic) *hashtbl_tailq; 1263 struct kernel_hash *curhash; 1264 void *hashaddr, *hashbuf, *nextaddr; 1265 size_t elemsize, hashbufsize, thissize; 1266 u_long hashsize; 1267 int i, used, items, chain, maxchain; 1268 1269 hashbuf = NULL; 1270 hashbufsize = 0; 1271 1272 if (todo & HASHLIST) { 1273 printf("Supported hashes:\n"); 1274 for (curhash = khashes; curhash->description; curhash++) { 1275 if (hashnl[curhash->hashsize].n_value == 0 || 1276 hashnl[curhash->hashtbl].n_value == 0) 1277 continue; 1278 printf("\t%-16s%s\n", 1279 hashnl[curhash->hashsize].n_name + 1, 1280 curhash->description); 1281 } 1282 return; 1283 } 1284 1285 if (hashname != NULL) { 1286 for (curhash = khashes; curhash->description; curhash++) { 1287 if (strcmp(hashnl[curhash->hashsize].n_name + 1, 1288 hashname) == 0 && 1289 hashnl[curhash->hashsize].n_value != 0 && 1290 hashnl[curhash->hashtbl].n_value != 0) 1291 break; 1292 } 1293 if (curhash->description == NULL) { 1294 warnx("%s: no such hash", hashname); 1295 return; 1296 } 1297 } 1298 1299 printf( 1300 "%-16s %8s %8s %8s %8s %8s %8s\n" 1301 "%-16s %8s %8s %8s %8s %8s %8s\n", 1302 "", "total", "used", "util", "num", "average", "maximum", 1303 "hash table", "buckets", "buckets", "%", "items", "chain", 1304 "chain"); 1305 1306 for (curhash = khashes; curhash->description; curhash++) { 1307 if (hashnl[curhash->hashsize].n_value == 0 || 1308 hashnl[curhash->hashtbl].n_value == 0) 1309 continue; 1310 if (hashname != NULL && 1311 strcmp(hashnl[curhash->hashsize].n_name + 1, hashname)) 1312 continue; 1313 elemsize = curhash->type == HASH_LIST ? 1314 sizeof(*hashtbl_list) : sizeof(*hashtbl_tailq); 1315 deref_kptr((void *)hashnl[curhash->hashsize].n_value, 1316 &hashsize, sizeof(hashsize), 1317 hashnl[curhash->hashsize].n_name); 1318 hashsize++; 1319 deref_kptr((void *)hashnl[curhash->hashtbl].n_value, 1320 &hashaddr, sizeof(hashaddr), 1321 hashnl[curhash->hashtbl].n_name); 1322 if (verbose) 1323 printf("%s %lu, %s %p, offset %ld, elemsize %llu\n", 1324 hashnl[curhash->hashsize].n_name + 1, hashsize, 1325 hashnl[curhash->hashtbl].n_name + 1, hashaddr, 1326 (long)curhash->offset, 1327 (unsigned long long)elemsize); 1328 thissize = hashsize * elemsize; 1329 if (thissize > hashbufsize) { 1330 hashbufsize = thissize; 1331 if ((hashbuf = realloc(hashbuf, hashbufsize)) == NULL) 1332 errx(1, "malloc hashbuf %llu", 1333 (unsigned long long)hashbufsize); 1334 } 1335 deref_kptr(hashaddr, hashbuf, thissize, 1336 hashnl[curhash->hashtbl].n_name); 1337 used = 0; 1338 items = maxchain = 0; 1339 if (curhash->type == HASH_LIST) 1340 hashtbl_list = hashbuf; 1341 else 1342 hashtbl_tailq = hashbuf; 1343 for (i = 0; i < hashsize; i++) { 1344 if (curhash->type == HASH_LIST) 1345 nextaddr = LIST_FIRST(&hashtbl_list[i]); 1346 else 1347 nextaddr = TAILQ_FIRST(&hashtbl_tailq[i]); 1348 if (nextaddr == NULL) 1349 continue; 1350 if (verbose) 1351 printf("%5d: %p\n", i, nextaddr); 1352 used++; 1353 chain = 0; 1354 do { 1355 chain++; 1356 deref_kptr((char *)nextaddr + curhash->offset, 1357 &nextaddr, sizeof(void *), 1358 "hash chain corrupted"); 1359 if (verbose > 1) 1360 printf("got nextaddr as %p\n", 1361 nextaddr); 1362 } while (nextaddr != NULL); 1363 items += chain; 1364 if (verbose && chain > 1) 1365 printf("\tchain = %d\n", chain); 1366 if (chain > maxchain) 1367 maxchain = chain; 1368 } 1369 printf("%-16s %8ld %8d %8.2f %8d %8.2f %8d\n", 1370 hashnl[curhash->hashsize].n_name + 1, 1371 hashsize, used, used * 100.0 / hashsize, 1372 items, used ? (double)items / used : 0.0, maxchain); 1373 } 1374 } 1375 1376 /* 1377 * kread reads something from the kernel, given its nlist index in namelist[]. 1378 */ 1379 void 1380 kread(int nlx, void *addr, size_t size) 1381 { 1382 const char *sym; 1383 1384 sym = namelist[nlx].n_name; 1385 if (*sym == '_') 1386 ++sym; 1387 if (namelist[nlx].n_type == 0 || namelist[nlx].n_value == 0) 1388 errx(1, "symbol %s not defined", sym); 1389 deref_kptr((void *)namelist[nlx].n_value, addr, size, sym); 1390 } 1391 1392 /* 1393 * Dereference the kernel pointer `kptr' and fill in the local copy 1394 * pointed to by `ptr'. The storage space must be pre-allocated, 1395 * and the size of the copy passed in `len'. 1396 */ 1397 void 1398 deref_kptr(const void *kptr, void *ptr, size_t len, const char *msg) 1399 { 1400 1401 if (*msg == '_') 1402 msg++; 1403 if (kvm_read(kd, (u_long)kptr, (char *)ptr, len) != len) 1404 errx(1, "kptr %lx: %s: %s", (u_long)kptr, msg, kvm_geterr(kd)); 1405 } 1406 1407 /* 1408 * Traverse the UVM history buffers, performing the requested action. 1409 * 1410 * Note, we assume that if we're not listing, we're dumping. 1411 */ 1412 void 1413 hist_traverse(int todo, const char *histname) 1414 { 1415 struct uvm_history_head histhead; 1416 struct uvm_history hist, *histkva; 1417 char *name = NULL; 1418 size_t namelen = 0; 1419 1420 if (histnl[0].n_value == 0) { 1421 warnx("UVM history is not compiled into the kernel."); 1422 return; 1423 } 1424 1425 deref_kptr((void *)histnl[X_UVM_HISTORIES].n_value, &histhead, 1426 sizeof(histhead), histnl[X_UVM_HISTORIES].n_name); 1427 1428 if (histhead.lh_first == NULL) { 1429 warnx("No active UVM history logs."); 1430 return; 1431 } 1432 1433 if (todo & HISTLIST) 1434 printf("Active UVM histories:"); 1435 1436 for (histkva = LIST_FIRST(&histhead); histkva != NULL; 1437 histkva = LIST_NEXT(&hist, list)) { 1438 deref_kptr(histkva, &hist, sizeof(hist), "histkva"); 1439 if (hist.namelen > namelen) { 1440 if (name != NULL) 1441 free(name); 1442 namelen = hist.namelen; 1443 if ((name = malloc(namelen + 1)) == NULL) 1444 err(1, "malloc history name"); 1445 } 1446 1447 deref_kptr(hist.name, name, namelen, "history name"); 1448 name[namelen] = '\0'; 1449 if (todo & HISTLIST) 1450 printf(" %s", name); 1451 else { 1452 /* 1453 * If we're dumping all histories, do it, else 1454 * check to see if this is the one we want. 1455 */ 1456 if (histname == NULL || strcmp(histname, name) == 0) { 1457 if (histname == NULL) 1458 printf("\nUVM history `%s':\n", name); 1459 hist_dodump(&hist); 1460 } 1461 } 1462 } 1463 1464 if (todo & HISTLIST) 1465 putchar('\n'); 1466 1467 if (name != NULL) 1468 free(name); 1469 } 1470 1471 /* 1472 * Actually dump the history buffer at the specified KVA. 1473 */ 1474 void 1475 hist_dodump(struct uvm_history *histp) 1476 { 1477 struct uvm_history_ent *histents, *e; 1478 size_t histsize; 1479 char *fmt = NULL, *fn = NULL; 1480 size_t fmtlen = 0, fnlen = 0; 1481 int i; 1482 1483 histsize = sizeof(struct uvm_history_ent) * histp->n; 1484 1485 if ((histents = malloc(histsize)) == NULL) 1486 err(1, "malloc history entries"); 1487 1488 memset(histents, 0, histsize); 1489 1490 deref_kptr(histp->e, histents, histsize, "history entries"); 1491 i = histp->f; 1492 do { 1493 e = &histents[i]; 1494 if (e->fmt != NULL) { 1495 if (e->fmtlen > fmtlen) { 1496 if (fmt != NULL) 1497 free(fmt); 1498 fmtlen = e->fmtlen; 1499 if ((fmt = malloc(fmtlen + 1)) == NULL) 1500 err(1, "malloc printf format"); 1501 } 1502 if (e->fnlen > fnlen) { 1503 if (fn != NULL) 1504 free(fn); 1505 fnlen = e->fnlen; 1506 if ((fn = malloc(fnlen + 1)) == NULL) 1507 err(1, "malloc function name"); 1508 } 1509 1510 deref_kptr(e->fmt, fmt, fmtlen, "printf format"); 1511 fmt[fmtlen] = '\0'; 1512 1513 deref_kptr(e->fn, fn, fnlen, "function name"); 1514 fn[fnlen] = '\0'; 1515 1516 printf("%06ld.%06ld ", (long int)e->tv.tv_sec, 1517 (long int)e->tv.tv_usec); 1518 printf("%s#%ld: ", fn, e->call); 1519 printf(fmt, e->v[0], e->v[1], e->v[2], e->v[3]); 1520 putchar('\n'); 1521 } 1522 i = (i + 1) % histp->n; 1523 } while (i != histp->f); 1524 1525 free(histents); 1526 if (fmt != NULL) 1527 free(fmt); 1528 if (fn != NULL) 1529 free(fn); 1530 } 1531 1532 void 1533 usage(void) 1534 { 1535 1536 (void)fprintf(stderr, 1537 "usage: %s [-efHilmsUv] [-h hashname] [-u histname] [-c count]\n" 1538 "\t\t[-M core] [-N system] [-w wait] [disks]\n", getprogname()); 1539 exit(1); 1540 } 1541