vmstat.c revision 1.118
1 /* $NetBSD: vmstat.c,v 1.118 2003/09/19 07:10:30 itojun 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. Neither the name of the University nor the names of its contributors 54 * may be used to endorse or promote products derived from this software 55 * without specific prior written permission. 56 * 57 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 58 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 59 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 60 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 61 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 62 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 63 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 64 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 65 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 66 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 67 * SUCH DAMAGE. 68 */ 69 70 #include <sys/cdefs.h> 71 #ifndef lint 72 __COPYRIGHT("@(#) Copyright (c) 1980, 1986, 1991, 1993\n\ 73 The Regents of the University of California. All rights reserved.\n"); 74 #endif /* not lint */ 75 76 #ifndef lint 77 #if 0 78 static char sccsid[] = "@(#)vmstat.c 8.2 (Berkeley) 3/1/95"; 79 #else 80 __RCSID("$NetBSD: vmstat.c,v 1.118 2003/09/19 07:10:30 itojun Exp $"); 81 #endif 82 #endif /* not lint */ 83 84 #define __POOL_EXPOSE 85 86 #include <sys/param.h> 87 #include <sys/mount.h> 88 #include <sys/uio.h> 89 90 #include <sys/buf.h> 91 #include <sys/device.h> 92 #include <sys/ioctl.h> 93 #include <sys/malloc.h> 94 #include <sys/mallocvar.h> 95 #include <sys/namei.h> 96 #include <sys/pool.h> 97 #include <sys/proc.h> 98 #include <sys/sched.h> 99 #include <sys/socket.h> 100 #include <sys/sysctl.h> 101 #include <sys/time.h> 102 #include <sys/user.h> 103 104 #include <uvm/uvm_extern.h> 105 #include <uvm/uvm_stat.h> 106 107 #include <net/if.h> 108 #include <netinet/in.h> 109 #include <netinet/in_var.h> 110 111 #include <ufs/ufs/inode.h> 112 113 #include <nfs/rpcv2.h> 114 #include <nfs/nfsproto.h> 115 #include <nfs/nfsnode.h> 116 117 #include <ctype.h> 118 #include <err.h> 119 #include <errno.h> 120 #include <fcntl.h> 121 #include <kvm.h> 122 #include <limits.h> 123 #include <nlist.h> 124 #undef n_hash 125 #include <paths.h> 126 #include <signal.h> 127 #include <stdio.h> 128 #include <stddef.h> 129 #include <stdlib.h> 130 #include <string.h> 131 #include <time.h> 132 #include <unistd.h> 133 #include <util.h> 134 135 #include "dkstats.h" 136 137 /* 138 * General namelist 139 */ 140 struct nlist namelist[] = 141 { 142 #define X_BOOTTIME 0 143 { "_boottime" }, 144 #define X_HZ 1 145 { "_hz" }, 146 #define X_STATHZ 2 147 { "_stathz" }, 148 #define X_NCHSTATS 3 149 { "_nchstats" }, 150 #define X_INTRNAMES 4 151 { "_intrnames" }, 152 #define X_EINTRNAMES 5 153 { "_eintrnames" }, 154 #define X_INTRCNT 6 155 { "_intrcnt" }, 156 #define X_EINTRCNT 7 157 { "_eintrcnt" }, 158 #define X_KMEMSTAT 8 159 { "_kmemstatistics" }, 160 #define X_KMEMBUCKETS 9 161 { "_bucket" }, 162 #define X_ALLEVENTS 10 163 { "_allevents" }, 164 #define X_POOLHEAD 11 165 { "_pool_head" }, 166 #define X_UVMEXP 12 167 { "_uvmexp" }, 168 #define X_TIME 13 169 { "_time" }, 170 #define X_END 14 171 { NULL }, 172 }; 173 174 /* 175 * Namelist for hash statistics 176 */ 177 struct nlist hashnl[] = 178 { 179 #define X_NFSNODE 0 180 { "_nfsnodehash" }, 181 #define X_NFSNODETBL 1 182 { "_nfsnodehashtbl" }, 183 #define X_IHASH 2 184 { "_ihash" }, 185 #define X_IHASHTBL 3 186 { "_ihashtbl" }, 187 #define X_BUFHASH 4 188 { "_bufhash" }, 189 #define X_BUFHASHTBL 5 190 { "_bufhashtbl" }, 191 #define X_PIDHASH 6 192 { "_pidhash" }, 193 #define X_PIDHASHTBL 7 194 { "_pidhashtbl" }, 195 #define X_PGRPHASH 8 196 { "_pgrphash" }, 197 #define X_PGRPHASHTBL 9 198 { "_pgrphashtbl" }, 199 #define X_UIHASH 10 200 { "_uihash" }, 201 #define X_UIHASHTBL 11 202 { "_uihashtbl" }, 203 #define X_IFADDRHASH 12 204 { "_in_ifaddrhash" }, 205 #define X_IFADDRHASHTBL 13 206 { "_in_ifaddrhashtbl" }, 207 #define X_NCHASH 14 208 { "_nchash" }, 209 #define X_NCHASHTBL 15 210 { "_nchashtbl" }, 211 #define X_NCVHASH 16 212 { "_ncvhash" }, 213 #define X_NCVHASHTBL 17 214 { "_ncvhashtbl" }, 215 #define X_HASHNL_SIZE 18 /* must be last */ 216 { NULL }, 217 218 }; 219 220 /* 221 * Namelist for UVM histories 222 */ 223 struct nlist histnl[] = 224 { 225 { "_uvm_histories" }, 226 #define X_UVM_HISTORIES 0 227 { NULL }, 228 }; 229 230 231 232 struct uvmexp uvmexp, ouvmexp; 233 int ndrives; 234 235 int winlines = 20; 236 237 kvm_t *kd; 238 239 #define FORKSTAT 1<<0 240 #define INTRSTAT 1<<1 241 #define MEMSTAT 1<<2 242 #define SUMSTAT 1<<3 243 #define EVCNTSTAT 1<<4 244 #define VMSTAT 1<<5 245 #define HISTLIST 1<<6 246 #define HISTDUMP 1<<7 247 #define HASHSTAT 1<<8 248 #define HASHLIST 1<<9 249 250 void cpustats(void); 251 void deref_kptr(const void *, void *, size_t, const char *); 252 void dkstats(void); 253 void doevcnt(int verbose); 254 void dohashstat(int, int, const char *); 255 void dointr(int verbose); 256 void domem(void); 257 void dopool(int); 258 void dopoolcache(struct pool *, int); 259 void dosum(void); 260 void dovmstat(struct timespec *, int); 261 void kread(int, void *, size_t); 262 void needhdr(int); 263 long getuptime(void); 264 void printhdr(void); 265 long pct(long, long); 266 void usage(void); 267 void doforkst(void); 268 269 void hist_traverse(int, const char *); 270 void hist_dodump(struct uvm_history *); 271 272 int main(int, char **); 273 char **choosedrives(char **); 274 275 /* Namelist and memory file names. */ 276 char *nlistf, *memf; 277 278 /* allow old usage [vmstat 1] */ 279 #define BACKWARD_COMPATIBILITY 280 281 int 282 main(int argc, char *argv[]) 283 { 284 int c, todo, verbose; 285 struct timespec interval; 286 int reps; 287 char errbuf[_POSIX2_LINE_MAX]; 288 gid_t egid = getegid(); 289 const char *histname, *hashname; 290 291 histname = hashname = NULL; 292 (void)setegid(getgid()); 293 memf = nlistf = NULL; 294 reps = todo = verbose = 0; 295 interval.tv_sec = 0; 296 interval.tv_nsec = 0; 297 while ((c = getopt(argc, argv, "c:efh:HilLM:mN:su:Uvw:")) != -1) { 298 switch (c) { 299 case 'c': 300 reps = atoi(optarg); 301 break; 302 case 'e': 303 todo |= EVCNTSTAT; 304 break; 305 case 'f': 306 todo |= FORKSTAT; 307 break; 308 case 'h': 309 hashname = optarg; 310 /* FALLTHROUGH */ 311 case 'H': 312 todo |= HASHSTAT; 313 break; 314 case 'i': 315 todo |= INTRSTAT; 316 break; 317 case 'l': 318 todo |= HISTLIST; 319 break; 320 case 'L': 321 todo |= HASHLIST; 322 break; 323 case 'M': 324 memf = optarg; 325 break; 326 case 'm': 327 todo |= MEMSTAT; 328 break; 329 case 'N': 330 nlistf = optarg; 331 break; 332 case 's': 333 todo |= SUMSTAT; 334 break; 335 case 'u': 336 histname = optarg; 337 /* FALLTHROUGH */ 338 case 'U': 339 todo |= HISTDUMP; 340 break; 341 case 'v': 342 verbose++; 343 break; 344 case 'w': 345 interval.tv_sec = atol(optarg); 346 break; 347 case '?': 348 default: 349 usage(); 350 } 351 } 352 argc -= optind; 353 argv += optind; 354 355 if (todo == 0) 356 todo = VMSTAT; 357 358 /* 359 * Discard setgid privileges. If not the running kernel, we toss 360 * them away totally so that bad guys can't print interesting stuff 361 * from kernel memory, otherwise switch back to kmem for the 362 * duration of the kvm_openfiles() call. 363 */ 364 if (nlistf != NULL || memf != NULL) 365 (void)setgid(getgid()); 366 else 367 (void)setegid(egid); 368 369 kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, errbuf); 370 if (kd == NULL) 371 errx(1, "kvm_openfiles: %s", errbuf); 372 373 if (nlistf == NULL && memf == NULL) 374 (void)setgid(getgid()); 375 376 if ((c = kvm_nlist(kd, namelist)) != 0) { 377 if (c == -1) 378 errx(1, "kvm_nlist: %s %s", "namelist", kvm_geterr(kd)); 379 (void)fprintf(stderr, "vmstat: undefined symbols:"); 380 for (c = 0; c < sizeof(namelist) / sizeof(namelist[0])-1; c++) 381 if (namelist[c].n_type == 0) 382 fprintf(stderr, " %s", namelist[c].n_name); 383 (void)fputc('\n', stderr); 384 exit(1); 385 } 386 if ((c = kvm_nlist(kd, hashnl)) == -1 || c == X_HASHNL_SIZE) 387 errx(1, "kvm_nlist: %s %s", "hashnl", kvm_geterr(kd)); 388 if (kvm_nlist(kd, histnl) == -1) 389 errx(1, "kvm_nlist: %s %s", "histnl", kvm_geterr(kd)); 390 391 if (todo & VMSTAT) { 392 struct winsize winsize; 393 394 dkinit(0); /* Initialize disk stats, no disks selected. */ 395 396 (void)setgid(getgid()); /* don't need privs anymore */ 397 398 argv = choosedrives(argv); /* Select disks. */ 399 winsize.ws_row = 0; 400 (void)ioctl(STDOUT_FILENO, TIOCGWINSZ, &winsize); 401 if (winsize.ws_row > 0) 402 winlines = winsize.ws_row; 403 404 } 405 406 #ifdef BACKWARD_COMPATIBILITY 407 if (*argv) { 408 interval.tv_sec = atol(*argv); 409 if (*++argv) 410 reps = atoi(*argv); 411 } 412 #endif 413 414 if (interval.tv_sec) { 415 if (!reps) 416 reps = -1; 417 } else if (reps) 418 interval.tv_sec = 1; 419 420 421 /* 422 * Statistics dumping is incompatible with the default 423 * VMSTAT/dovmstat() output. So perform the interval/reps handling 424 * for it here. 425 */ 426 if ((todo & VMSTAT) == 0) { 427 for (;;) { 428 if (todo & (HISTLIST|HISTDUMP)) { 429 if ((todo & (HISTLIST|HISTDUMP)) == 430 (HISTLIST|HISTDUMP)) 431 errx(1, "you may list or dump," 432 " but not both!"); 433 hist_traverse(todo, histname); 434 putchar('\n'); 435 } 436 if (todo & FORKSTAT) { 437 doforkst(); 438 putchar('\n'); 439 } 440 if (todo & MEMSTAT) { 441 domem(); 442 dopool(verbose); 443 putchar('\n'); 444 } 445 if (todo & SUMSTAT) { 446 dosum(); 447 putchar('\n'); 448 } 449 if (todo & INTRSTAT) { 450 dointr(verbose); 451 putchar('\n'); 452 } 453 if (todo & EVCNTSTAT) { 454 doevcnt(verbose); 455 putchar('\n'); 456 } 457 if (todo & (HASHLIST|HASHSTAT)) { 458 if ((todo & (HASHLIST|HASHSTAT)) == 459 (HASHLIST|HASHSTAT)) 460 errx(1, "you may list or display," 461 " but not both!"); 462 dohashstat(verbose, todo, hashname); 463 putchar('\n'); 464 } 465 466 if (reps >= 0 && --reps <=0) 467 break; 468 nanosleep(&interval, NULL); 469 } 470 } else 471 dovmstat(&interval, reps); 472 exit(0); 473 } 474 475 char ** 476 choosedrives(char **argv) 477 { 478 int i; 479 480 /* 481 * Choose drives to be displayed. Priority goes to (in order) drives 482 * supplied as arguments, default drives. If everything isn't filled 483 * in and there are drives not taken care of, display the first few 484 * that fit. 485 */ 486 #define BACKWARD_COMPATIBILITY 487 for (ndrives = 0; *argv; ++argv) { 488 #ifdef BACKWARD_COMPATIBILITY 489 if (isdigit(**argv)) 490 break; 491 #endif 492 for (i = 0; i < dk_ndrive; i++) { 493 if (strcmp(dr_name[i], *argv)) 494 continue; 495 dk_select[i] = 1; 496 ++ndrives; 497 break; 498 } 499 } 500 for (i = 0; i < dk_ndrive && ndrives < 4; i++) { 501 if (dk_select[i]) 502 continue; 503 dk_select[i] = 1; 504 ++ndrives; 505 } 506 return (argv); 507 } 508 509 long 510 getuptime(void) 511 { 512 static struct timeval boottime; 513 struct timeval now, diff; 514 time_t uptime; 515 516 if (boottime.tv_sec == 0) 517 kread(X_BOOTTIME, &boottime, sizeof(boottime)); 518 kread(X_TIME, &now, sizeof(now)); 519 timersub(&now, &boottime, &diff); 520 uptime = diff.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(struct timespec *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(" %6ld %6ld ", 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->tv_sec; 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 nanosleep(interval, NULL); 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; 778 double etime; 779 780 /* Calculate disk stat deltas. */ 781 dkswap(); 782 etime = cur.cp_etime; 783 784 for (dn = 0; dn < dk_ndrive; ++dn) { 785 if (!dk_select[dn]) 786 continue; 787 (void)printf("%2.0f ", 788 (cur.dk_rxfer[dn] + cur.dk_wxfer[dn]) / etime); 789 } 790 } 791 792 void 793 cpustats(void) 794 { 795 int state; 796 double pct, total; 797 798 total = 0; 799 for (state = 0; state < CPUSTATES; ++state) 800 total += cur.cp_time[state]; 801 if (total) 802 pct = 100 / total; 803 else 804 pct = 0; 805 (void)printf("%2.0f ", 806 (cur.cp_time[CP_USER] + cur.cp_time[CP_NICE]) * pct); 807 (void)printf("%2.0f ", 808 (cur.cp_time[CP_SYS] + cur.cp_time[CP_INTR]) * pct); 809 (void)printf("%2.0f", cur.cp_time[CP_IDLE] * pct); 810 } 811 812 void 813 dointr(int verbose) 814 { 815 unsigned long *intrcnt; 816 unsigned long long inttotal, uptime; 817 int nintr, inamlen; 818 char *intrname; 819 struct evcntlist allevents; 820 struct evcnt evcnt, *evptr; 821 char evgroup[EVCNT_STRING_MAX], evname[EVCNT_STRING_MAX]; 822 823 uptime = getuptime(); 824 nintr = namelist[X_EINTRCNT].n_value - namelist[X_INTRCNT].n_value; 825 inamlen = 826 namelist[X_EINTRNAMES].n_value - namelist[X_INTRNAMES].n_value; 827 intrcnt = malloc((size_t)nintr); 828 intrname = malloc((size_t)inamlen); 829 if (intrcnt == NULL || intrname == NULL) 830 errx(1, "%s", ""); 831 kread(X_INTRCNT, intrcnt, (size_t)nintr); 832 kread(X_INTRNAMES, intrname, (size_t)inamlen); 833 (void)printf("%-34s %16s %8s\n", "interrupt", "total", "rate"); 834 inttotal = 0; 835 nintr /= sizeof(long); 836 while (--nintr >= 0) { 837 if (*intrcnt || verbose) 838 (void)printf("%-34s %16llu %8llu\n", intrname, 839 (unsigned long long)*intrcnt, 840 (unsigned long long)(*intrcnt / uptime)); 841 intrname += strlen(intrname) + 1; 842 inttotal += *intrcnt++; 843 } 844 kread(X_ALLEVENTS, &allevents, sizeof allevents); 845 evptr = allevents.tqh_first; 846 while (evptr) { 847 deref_kptr(evptr, &evcnt, sizeof(evcnt), "event chain trashed"); 848 evptr = evcnt.ev_list.tqe_next; 849 if (evcnt.ev_type != EVCNT_TYPE_INTR) 850 continue; 851 852 if (evcnt.ev_count == 0 && !verbose) 853 continue; 854 855 deref_kptr(evcnt.ev_group, evgroup, evcnt.ev_grouplen + 1, 856 "event chain trashed"); 857 deref_kptr(evcnt.ev_name, evname, evcnt.ev_namelen + 1, 858 "event chain trashed"); 859 860 (void)printf("%s %s%*s %16llu %8llu\n", evgroup, evname, 861 34 - (evcnt.ev_grouplen + 1 + evcnt.ev_namelen), "", 862 (unsigned long long)evcnt.ev_count, 863 (unsigned long long)(evcnt.ev_count / uptime)); 864 865 inttotal += evcnt.ev_count++; 866 } 867 (void)printf("%-34s %16llu %8llu\n", "Total", inttotal, 868 (unsigned long long)(inttotal / uptime)); 869 } 870 871 void 872 doevcnt(int verbose) 873 { 874 static const char * evtypes [] = { "misc", "intr", "trap" }; 875 unsigned long long uptime; 876 struct evcntlist allevents; 877 struct evcnt evcnt, *evptr; 878 char evgroup[EVCNT_STRING_MAX], evname[EVCNT_STRING_MAX]; 879 880 /* XXX should print type! */ 881 882 uptime = getuptime(); 883 (void)printf("%-34s %16s %8s %s\n", "event", "total", "rate", "type"); 884 kread(X_ALLEVENTS, &allevents, sizeof allevents); 885 evptr = allevents.tqh_first; 886 while (evptr) { 887 deref_kptr(evptr, &evcnt, sizeof(evcnt), "event chain trashed"); 888 889 evptr = evcnt.ev_list.tqe_next; 890 if (evcnt.ev_count == 0 && !verbose) 891 continue; 892 893 deref_kptr(evcnt.ev_group, evgroup, evcnt.ev_grouplen + 1, 894 "event chain trashed"); 895 deref_kptr(evcnt.ev_name, evname, evcnt.ev_namelen + 1, 896 "event chain trashed"); 897 898 (void)printf("%s %s%*s %16llu %8llu %s\n", evgroup, evname, 899 34 - (evcnt.ev_grouplen + 1 + evcnt.ev_namelen), "", 900 (unsigned long long)evcnt.ev_count, 901 (unsigned long long)(evcnt.ev_count / uptime), 902 (evcnt.ev_type < sizeof(evtypes)/sizeof(evtypes[0]) ? 903 evtypes[evcnt.ev_type] : "?")); 904 } 905 } 906 907 static char memname[64]; 908 909 void 910 domem(void) 911 { 912 struct kmembuckets *kp; 913 struct malloc_type ks, *ksp; 914 int i, j; 915 int len, size, first; 916 long totuse = 0, totfree = 0, totreq = 0; 917 struct kmembuckets buckets[MINBUCKET + 16]; 918 919 kread(X_KMEMBUCKETS, buckets, sizeof(buckets)); 920 for (first = 1, i = MINBUCKET, kp = &buckets[i]; i < MINBUCKET + 16; 921 i++, kp++) { 922 if (kp->kb_calls == 0) 923 continue; 924 if (first) { 925 (void)printf("Memory statistics by bucket size\n"); 926 (void)printf( 927 " Size In Use Free Requests HighWater Couldfree\n"); 928 first = 0; 929 } 930 size = 1 << i; 931 (void)printf("%8d %8ld %6ld %10ld %7ld %10ld\n", size, 932 kp->kb_total - kp->kb_totalfree, 933 kp->kb_totalfree, kp->kb_calls, 934 kp->kb_highwat, kp->kb_couldfree); 935 totfree += size * kp->kb_totalfree; 936 } 937 938 /* 939 * If kmem statistics are not being gathered by the kernel, 940 * first will still be 1. 941 */ 942 if (first) { 943 warnx("Kmem statistics are not being gathered by the kernel."); 944 return; 945 } 946 947 (void)printf("\nMemory usage type by bucket size\n"); 948 (void)printf(" Size Type(s)\n"); 949 kp = &buckets[MINBUCKET]; 950 for (j = 1 << MINBUCKET; j < 1 << (MINBUCKET + 16); j <<= 1, kp++) { 951 if (kp->kb_calls == 0) 952 continue; 953 first = 1; 954 len = 8; 955 for (kread(X_KMEMSTAT, &ksp, sizeof(ksp)); 956 ksp != NULL; ksp = ks.ks_next) { 957 deref_kptr(ksp, &ks, sizeof(ks), "malloc type"); 958 if (ks.ks_calls == 0) 959 continue; 960 if ((ks.ks_size & j) == 0) 961 continue; 962 deref_kptr(ks.ks_shortdesc, memname, 963 sizeof(memname), "malloc type name"); 964 len += 2 + strlen(memname); 965 if (first) 966 printf("%8d %s", j, memname); 967 else 968 printf(","); 969 if (len >= 80) { 970 printf("\n\t "); 971 len = 10 + strlen(memname); 972 } 973 if (!first) 974 printf(" %s", memname); 975 first = 0; 976 } 977 putchar('\n'); 978 } 979 980 (void)printf( 981 "\nMemory statistics by type Type Kern\n"); 982 (void)printf( 983 " Type InUse MemUse HighUse Limit Requests Limit Limit Size(s)\n"); 984 for (kread(X_KMEMSTAT, &ksp, sizeof(ksp)); 985 ksp != NULL; ksp = ks.ks_next) { 986 deref_kptr(ksp, &ks, sizeof(ks), "malloc type"); 987 if (ks.ks_calls == 0) 988 continue; 989 deref_kptr(ks.ks_shortdesc, memname, 990 sizeof(memname), "malloc type name"); 991 (void)printf("%14s%6ld%6ldK%7ldK%6ldK%9ld%5u%6u", 992 memname, 993 ks.ks_inuse, (ks.ks_memuse + 1023) / 1024, 994 (ks.ks_maxused + 1023) / 1024, 995 (ks.ks_limit + 1023) / 1024, ks.ks_calls, 996 ks.ks_limblocks, ks.ks_mapblocks); 997 first = 1; 998 for (j = 1 << MINBUCKET; j < 1 << (MINBUCKET + 16); j <<= 1) { 999 if ((ks.ks_size & j) == 0) 1000 continue; 1001 if (first) 1002 printf(" %d", j); 1003 else 1004 printf(",%d", j); 1005 first = 0; 1006 } 1007 printf("\n"); 1008 totuse += ks.ks_memuse; 1009 totreq += ks.ks_calls; 1010 } 1011 (void)printf("\nMemory totals: In Use Free Requests\n"); 1012 (void)printf(" %7ldK %6ldK %8ld\n\n", 1013 (totuse + 1023) / 1024, (totfree + 1023) / 1024, totreq); 1014 } 1015 1016 void 1017 dopool(int verbose) 1018 { 1019 int first, ovflw; 1020 void *addr; 1021 long total = 0, inuse = 0; 1022 TAILQ_HEAD(,pool) pool_head; 1023 struct pool pool, *pp = &pool; 1024 struct pool_allocator pa; 1025 char name[32], maxp[32]; 1026 1027 kread(X_POOLHEAD, &pool_head, sizeof(pool_head)); 1028 addr = TAILQ_FIRST(&pool_head); 1029 1030 for (first = 1; addr != NULL; addr = TAILQ_NEXT(pp, pr_poollist) ) { 1031 deref_kptr(addr, pp, sizeof(*pp), "pool chain trashed"); 1032 deref_kptr(pp->pr_alloc, &pa, sizeof(pa), 1033 "pool allocatior trashed"); 1034 deref_kptr(pp->pr_wchan, name, sizeof(name), 1035 "pool wait channel trashed"); 1036 name[sizeof(name)-1] = '\0'; 1037 1038 if (first) { 1039 (void)printf("Memory resource pool statistics\n"); 1040 (void)printf( 1041 "%-11s%5s%9s%5s%9s%6s%6s%6s%6s%6s%6s%5s\n", 1042 "Name", 1043 "Size", 1044 "Requests", 1045 "Fail", 1046 "Releases", 1047 "Pgreq", 1048 "Pgrel", 1049 "Npage", 1050 "Hiwat", 1051 "Minpg", 1052 "Maxpg", 1053 "Idle"); 1054 first = 0; 1055 } 1056 if (pp->pr_nget == 0 && !verbose) 1057 continue; 1058 if (pp->pr_maxpages == UINT_MAX) 1059 snprintf(maxp, sizeof(maxp), "inf"); 1060 else 1061 snprintf(maxp, sizeof(maxp), "%u", pp->pr_maxpages); 1062 /* 1063 * Print single word. `ovflow' is number of characters didn't fit 1064 * on the last word. `fmt' is a format string to print this word. 1065 * It must contain asterisk for field width. `width' is a width 1066 * occupied by this word. `fixed' is a number of constant chars in 1067 * `fmt'. `val' is a value to be printed using format string `fmt'. 1068 */ 1069 #define PRWORD(ovflw, fmt, width, fixed, val) do { \ 1070 (ovflw) += printf((fmt), \ 1071 (width) - (fixed) - (ovflw) > 0 ? \ 1072 (width) - (fixed) - (ovflw) : 0, \ 1073 (val)) - (width); \ 1074 if ((ovflw) < 0) \ 1075 (ovflw) = 0; \ 1076 } while (/* CONSTCOND */0) 1077 ovflw = 0; 1078 PRWORD(ovflw, "%-*s", 11, 0, name); 1079 PRWORD(ovflw, " %*u", 5, 1, pp->pr_size); 1080 PRWORD(ovflw, " %*lu", 9, 1, pp->pr_nget); 1081 PRWORD(ovflw, " %*lu", 5, 1, pp->pr_nfail); 1082 PRWORD(ovflw, " %*lu", 9, 1, pp->pr_nput); 1083 PRWORD(ovflw, " %*lu", 6, 1, pp->pr_npagealloc); 1084 PRWORD(ovflw, " %*lu", 6, 1, pp->pr_npagefree); 1085 PRWORD(ovflw, " %*d", 6, 1, pp->pr_npages); 1086 PRWORD(ovflw, " %*d", 6, 1, pp->pr_hiwat); 1087 PRWORD(ovflw, " %*d", 6, 1, pp->pr_minpages); 1088 PRWORD(ovflw, " %*s", 6, 1, maxp); 1089 PRWORD(ovflw, " %*lu\n", 5, 1, pp->pr_nidle); 1090 1091 if (pp->pr_roflags & PR_RECURSIVE) { 1092 /* 1093 * Don't count in-use memory, since it's part 1094 * of another pool and will be accounted for 1095 * there. 1096 */ 1097 total += pp->pr_npages * pa.pa_pagesz - 1098 (pp->pr_nget - pp->pr_nput) * pp->pr_size; 1099 } else { 1100 inuse += (pp->pr_nget - pp->pr_nput) * pp->pr_size; 1101 total += pp->pr_npages * pa.pa_pagesz; 1102 } 1103 dopoolcache(pp, verbose); 1104 } 1105 1106 inuse /= 1024; 1107 total /= 1024; 1108 printf("\nIn use %ldK, total allocated %ldK; utilization %.1f%%\n", 1109 inuse, total, (double)(100 * inuse) / total); 1110 } 1111 1112 void 1113 dopoolcache(struct pool *pp, int verbose) 1114 { 1115 struct pool_cache pool_cache, *pc = &pool_cache; 1116 struct pool_cache_group pool_cache_group, *pcg = &pool_cache_group; 1117 void *addr, *pcg_addr; 1118 int i; 1119 1120 if (verbose < 1) 1121 return; 1122 1123 for (addr = TAILQ_FIRST(&pp->pr_cachelist); addr != NULL; 1124 addr = TAILQ_NEXT(pc, pc_poollist)) { 1125 deref_kptr(addr, pc, sizeof(*pc), "pool cache trashed"); 1126 printf("\tcache %p: allocfrom %p freeto %p\n", addr, 1127 pc->pc_allocfrom, pc->pc_freeto); 1128 printf("\t hits %lu misses %lu ngroups %lu nitems %lu\n", 1129 pc->pc_hits, pc->pc_misses, pc->pc_ngroups, pc->pc_nitems); 1130 if (verbose < 2) 1131 continue; 1132 for (pcg_addr = TAILQ_FIRST(&pc->pc_grouplist); 1133 pcg_addr != NULL; pcg_addr = TAILQ_NEXT(pcg, pcg_list)) { 1134 deref_kptr(pcg_addr, pcg, sizeof(*pcg), 1135 "pool cache group trashed"); 1136 printf("\t\tgroup %p: avail %d\n", pcg_addr, 1137 pcg->pcg_avail); 1138 for (i = 0; i < PCG_NOBJECTS; i++) { 1139 if (pcg->pcg_objects[i].pcgo_pa != 1140 POOL_PADDR_INVALID) { 1141 printf("\t\t\t%p, 0x%llx\n", 1142 pcg->pcg_objects[i].pcgo_va, 1143 (unsigned long long) 1144 pcg->pcg_objects[i].pcgo_pa); 1145 } else { 1146 printf("\t\t\t%p\n", 1147 pcg->pcg_objects[i].pcgo_va); 1148 } 1149 } 1150 } 1151 } 1152 1153 } 1154 1155 enum hashtype { /* from <sys/systm.h> */ 1156 HASH_LIST, 1157 HASH_TAILQ 1158 }; 1159 1160 struct uidinfo { /* XXX: no kernel header file */ 1161 LIST_ENTRY(uidinfo) ui_hash; 1162 uid_t ui_uid; 1163 long ui_proccnt; 1164 }; 1165 1166 struct kernel_hash { 1167 const char * description; /* description */ 1168 int hashsize; /* nlist index for hash size */ 1169 int hashtbl; /* nlist index for hash table */ 1170 enum hashtype type; /* type of hash table */ 1171 size_t offset; /* offset of {LIST,TAILQ}_NEXT */ 1172 } khashes[] = 1173 { 1174 { 1175 "buffer hash", 1176 X_BUFHASH, X_BUFHASHTBL, 1177 HASH_LIST, offsetof(struct buf, b_hash) 1178 }, { 1179 "inode cache (ihash)", 1180 X_IHASH, X_IHASHTBL, 1181 HASH_LIST, offsetof(struct inode, i_hash) 1182 }, { 1183 "ipv4 address -> interface hash", 1184 X_IFADDRHASH, X_IFADDRHASHTBL, 1185 HASH_LIST, offsetof(struct in_ifaddr, ia_hash), 1186 }, { 1187 "name cache hash", 1188 X_NCHASH, X_NCHASHTBL, 1189 HASH_LIST, offsetof(struct namecache, nc_hash), 1190 }, { 1191 "name cache directory hash", 1192 X_NCVHASH, X_NCVHASHTBL, 1193 HASH_LIST, offsetof(struct namecache, nc_vhash), 1194 }, { 1195 "nfs client node cache", 1196 X_NFSNODE, X_NFSNODETBL, 1197 HASH_LIST, offsetof(struct nfsnode, n_hash) 1198 }, { 1199 "user info (uid -> used processes) hash", 1200 X_UIHASH, X_UIHASHTBL, 1201 HASH_LIST, offsetof(struct uidinfo, ui_hash), 1202 }, { 1203 NULL, -1, -1, 0, 0, 1204 } 1205 }; 1206 1207 void 1208 dohashstat(int verbose, int todo, const char *hashname) 1209 { 1210 LIST_HEAD(, generic) *hashtbl_list; 1211 TAILQ_HEAD(, generic) *hashtbl_tailq; 1212 struct kernel_hash *curhash; 1213 void *hashaddr, *hashbuf, *nhashbuf, *nextaddr; 1214 size_t elemsize, hashbufsize, thissize; 1215 u_long hashsize; 1216 int i, used, items, chain, maxchain; 1217 1218 hashbuf = NULL; 1219 hashbufsize = 0; 1220 1221 if (todo & HASHLIST) { 1222 printf("Supported hashes:\n"); 1223 for (curhash = khashes; curhash->description; curhash++) { 1224 if (hashnl[curhash->hashsize].n_value == 0 || 1225 hashnl[curhash->hashtbl].n_value == 0) 1226 continue; 1227 printf("\t%-16s%s\n", 1228 hashnl[curhash->hashsize].n_name + 1, 1229 curhash->description); 1230 } 1231 return; 1232 } 1233 1234 if (hashname != NULL) { 1235 for (curhash = khashes; curhash->description; curhash++) { 1236 if (strcmp(hashnl[curhash->hashsize].n_name + 1, 1237 hashname) == 0 && 1238 hashnl[curhash->hashsize].n_value != 0 && 1239 hashnl[curhash->hashtbl].n_value != 0) 1240 break; 1241 } 1242 if (curhash->description == NULL) { 1243 warnx("%s: no such hash", hashname); 1244 return; 1245 } 1246 } 1247 1248 printf( 1249 "%-16s %8s %8s %8s %8s %8s %8s\n" 1250 "%-16s %8s %8s %8s %8s %8s %8s\n", 1251 "", "total", "used", "util", "num", "average", "maximum", 1252 "hash table", "buckets", "buckets", "%", "items", "chain", 1253 "chain"); 1254 1255 for (curhash = khashes; curhash->description; curhash++) { 1256 if (hashnl[curhash->hashsize].n_value == 0 || 1257 hashnl[curhash->hashtbl].n_value == 0) 1258 continue; 1259 if (hashname != NULL && 1260 strcmp(hashnl[curhash->hashsize].n_name + 1, hashname)) 1261 continue; 1262 elemsize = curhash->type == HASH_LIST ? 1263 sizeof(*hashtbl_list) : sizeof(*hashtbl_tailq); 1264 deref_kptr((void *)hashnl[curhash->hashsize].n_value, 1265 &hashsize, sizeof(hashsize), 1266 hashnl[curhash->hashsize].n_name); 1267 hashsize++; 1268 deref_kptr((void *)hashnl[curhash->hashtbl].n_value, 1269 &hashaddr, sizeof(hashaddr), 1270 hashnl[curhash->hashtbl].n_name); 1271 if (verbose) 1272 printf("%s %lu, %s %p, offset %ld, elemsize %llu\n", 1273 hashnl[curhash->hashsize].n_name + 1, hashsize, 1274 hashnl[curhash->hashtbl].n_name + 1, hashaddr, 1275 (long)curhash->offset, 1276 (unsigned long long)elemsize); 1277 thissize = hashsize * elemsize; 1278 if (thissize > hashbufsize) { 1279 if ((nhashbuf = realloc(hashbuf, thissize)) == NULL) 1280 errx(1, "malloc hashbuf %llu", 1281 (unsigned long long)hashbufsize); 1282 hashbuf = nhashbuf; 1283 hashbufsize = thissize; 1284 } 1285 deref_kptr(hashaddr, hashbuf, thissize, 1286 hashnl[curhash->hashtbl].n_name); 1287 used = 0; 1288 items = maxchain = 0; 1289 if (curhash->type == HASH_LIST) 1290 hashtbl_list = hashbuf; 1291 else 1292 hashtbl_tailq = hashbuf; 1293 for (i = 0; i < hashsize; i++) { 1294 if (curhash->type == HASH_LIST) 1295 nextaddr = LIST_FIRST(&hashtbl_list[i]); 1296 else 1297 nextaddr = TAILQ_FIRST(&hashtbl_tailq[i]); 1298 if (nextaddr == NULL) 1299 continue; 1300 if (verbose) 1301 printf("%5d: %p\n", i, nextaddr); 1302 used++; 1303 chain = 0; 1304 do { 1305 chain++; 1306 deref_kptr((char *)nextaddr + curhash->offset, 1307 &nextaddr, sizeof(void *), 1308 "hash chain corrupted"); 1309 if (verbose > 1) 1310 printf("got nextaddr as %p\n", 1311 nextaddr); 1312 } while (nextaddr != NULL); 1313 items += chain; 1314 if (verbose && chain > 1) 1315 printf("\tchain = %d\n", chain); 1316 if (chain > maxchain) 1317 maxchain = chain; 1318 } 1319 printf("%-16s %8ld %8d %8.2f %8d %8.2f %8d\n", 1320 hashnl[curhash->hashsize].n_name + 1, 1321 hashsize, used, used * 100.0 / hashsize, 1322 items, used ? (double)items / used : 0.0, maxchain); 1323 } 1324 } 1325 1326 /* 1327 * kread reads something from the kernel, given its nlist index in namelist[]. 1328 */ 1329 void 1330 kread(int nlx, void *addr, size_t size) 1331 { 1332 const char *sym; 1333 1334 sym = namelist[nlx].n_name; 1335 if (*sym == '_') 1336 ++sym; 1337 if (namelist[nlx].n_type == 0 || namelist[nlx].n_value == 0) 1338 errx(1, "symbol %s not defined", sym); 1339 deref_kptr((void *)namelist[nlx].n_value, addr, size, sym); 1340 } 1341 1342 /* 1343 * Dereference the kernel pointer `kptr' and fill in the local copy 1344 * pointed to by `ptr'. The storage space must be pre-allocated, 1345 * and the size of the copy passed in `len'. 1346 */ 1347 void 1348 deref_kptr(const void *kptr, void *ptr, size_t len, const char *msg) 1349 { 1350 1351 if (*msg == '_') 1352 msg++; 1353 if (kvm_read(kd, (u_long)kptr, (char *)ptr, len) != len) 1354 errx(1, "kptr %lx: %s: %s", (u_long)kptr, msg, kvm_geterr(kd)); 1355 } 1356 1357 /* 1358 * Traverse the UVM history buffers, performing the requested action. 1359 * 1360 * Note, we assume that if we're not listing, we're dumping. 1361 */ 1362 void 1363 hist_traverse(int todo, const char *histname) 1364 { 1365 struct uvm_history_head histhead; 1366 struct uvm_history hist, *histkva; 1367 char *name = NULL; 1368 size_t namelen = 0; 1369 1370 if (histnl[0].n_value == 0) { 1371 warnx("UVM history is not compiled into the kernel."); 1372 return; 1373 } 1374 1375 deref_kptr((void *)histnl[X_UVM_HISTORIES].n_value, &histhead, 1376 sizeof(histhead), histnl[X_UVM_HISTORIES].n_name); 1377 1378 if (histhead.lh_first == NULL) { 1379 warnx("No active UVM history logs."); 1380 return; 1381 } 1382 1383 if (todo & HISTLIST) 1384 printf("Active UVM histories:"); 1385 1386 for (histkva = LIST_FIRST(&histhead); histkva != NULL; 1387 histkva = LIST_NEXT(&hist, list)) { 1388 deref_kptr(histkva, &hist, sizeof(hist), "histkva"); 1389 if (hist.namelen > namelen) { 1390 if (name != NULL) 1391 free(name); 1392 namelen = hist.namelen; 1393 if ((name = malloc(namelen + 1)) == NULL) 1394 err(1, "malloc history name"); 1395 } 1396 1397 deref_kptr(hist.name, name, namelen, "history name"); 1398 name[namelen] = '\0'; 1399 if (todo & HISTLIST) 1400 printf(" %s", name); 1401 else { 1402 /* 1403 * If we're dumping all histories, do it, else 1404 * check to see if this is the one we want. 1405 */ 1406 if (histname == NULL || strcmp(histname, name) == 0) { 1407 if (histname == NULL) 1408 printf("\nUVM history `%s':\n", name); 1409 hist_dodump(&hist); 1410 } 1411 } 1412 } 1413 1414 if (todo & HISTLIST) 1415 putchar('\n'); 1416 1417 if (name != NULL) 1418 free(name); 1419 } 1420 1421 /* 1422 * Actually dump the history buffer at the specified KVA. 1423 */ 1424 void 1425 hist_dodump(struct uvm_history *histp) 1426 { 1427 struct uvm_history_ent *histents, *e; 1428 size_t histsize; 1429 char *fmt = NULL, *fn = NULL; 1430 size_t fmtlen = 0, fnlen = 0; 1431 int i; 1432 1433 histsize = sizeof(struct uvm_history_ent) * histp->n; 1434 1435 if ((histents = malloc(histsize)) == NULL) 1436 err(1, "malloc history entries"); 1437 1438 memset(histents, 0, histsize); 1439 1440 deref_kptr(histp->e, histents, histsize, "history entries"); 1441 i = histp->f; 1442 do { 1443 e = &histents[i]; 1444 if (e->fmt != NULL) { 1445 if (e->fmtlen > fmtlen) { 1446 if (fmt != NULL) 1447 free(fmt); 1448 fmtlen = e->fmtlen; 1449 if ((fmt = malloc(fmtlen + 1)) == NULL) 1450 err(1, "malloc printf format"); 1451 } 1452 if (e->fnlen > fnlen) { 1453 if (fn != NULL) 1454 free(fn); 1455 fnlen = e->fnlen; 1456 if ((fn = malloc(fnlen + 1)) == NULL) 1457 err(1, "malloc function name"); 1458 } 1459 1460 deref_kptr(e->fmt, fmt, fmtlen, "printf format"); 1461 fmt[fmtlen] = '\0'; 1462 1463 deref_kptr(e->fn, fn, fnlen, "function name"); 1464 fn[fnlen] = '\0'; 1465 1466 printf("%06ld.%06ld ", (long int)e->tv.tv_sec, 1467 (long int)e->tv.tv_usec); 1468 printf("%s#%ld: ", fn, e->call); 1469 printf(fmt, e->v[0], e->v[1], e->v[2], e->v[3]); 1470 putchar('\n'); 1471 } 1472 i = (i + 1) % histp->n; 1473 } while (i != histp->f); 1474 1475 free(histents); 1476 if (fmt != NULL) 1477 free(fmt); 1478 if (fn != NULL) 1479 free(fn); 1480 } 1481 1482 void 1483 usage(void) 1484 { 1485 1486 (void)fprintf(stderr, 1487 "usage: %s [-efHilmsUv] [-h hashname] [-u histname] [-c count]\n" 1488 "\t\t[-M core] [-N system] [-w wait] [disks]\n", getprogname()); 1489 exit(1); 1490 } 1491
Indexes created Wed Sep 24 05:09:52 GMT 2025