1 /*- 2 * Copyright (c) 1983, 1989, 1992, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 #ifndef lint 35 static char sccsid[] = "@(#)vmstat.c 8.2 (Berkeley) 1/12/94"; 36 #endif /* not lint */ 37 38 /* 39 * Cursed vmstat -- from Robert Elz. 40 */ 41 42 #include <sys/param.h> 43 #include <sys/dkstat.h> 44 #include <sys/buf.h> 45 #include <sys/stat.h> 46 #include <sys/time.h> 47 #include <sys/user.h> 48 #include <sys/proc.h> 49 #include <sys/namei.h> 50 #include <sys/sysctl.h> 51 #include <vm/vm.h> 52 53 #include <signal.h> 54 #include <nlist.h> 55 #include <ctype.h> 56 #include <utmp.h> 57 #include <paths.h> 58 #include <string.h> 59 #include <stdlib.h> 60 #include <unistd.h> 61 #include "systat.h" 62 #include "extern.h" 63 64 static struct Info { 65 long time[CPUSTATES]; 66 struct vmmeter Cnt; 67 struct vmtotal Total; 68 long *dk_time; 69 long *dk_wds; 70 long *dk_seek; 71 long *dk_xfer; 72 int dk_busy; 73 struct nchstats nchstats; 74 long nchcount; 75 long *intrcnt; 76 } s, s1, s2, z; 77 78 #define cnt s.Cnt 79 #define oldcnt s1.Cnt 80 #define total s.Total 81 #define nchtotal s.nchstats 82 #define oldnchtotal s1.nchstats 83 84 static enum state { BOOT, TIME, RUN } state = TIME; 85 86 static void allocinfo __P((struct Info *)); 87 static void copyinfo __P((struct Info *, struct Info *)); 88 static float cputime __P((int)); 89 static void dinfo __P((int, int)); 90 static void getinfo __P((struct Info *, enum state)); 91 static void putint __P((int, int, int, int)); 92 static void putfloat __P((double, int, int, int, int, int)); 93 static int ucount __P((void)); 94 95 static int ut; 96 static char buf[26]; 97 static time_t t; 98 static double etime; 99 static int nintr; 100 static long *intrloc; 101 static char **intrname; 102 static int nextintsrow; 103 104 struct utmp utmp; 105 106 107 WINDOW * 108 openkre() 109 { 110 111 ut = open(_PATH_UTMP, O_RDONLY); 112 if (ut < 0) 113 error("No utmp"); 114 return (stdscr); 115 } 116 117 void 118 closekre(w) 119 WINDOW *w; 120 { 121 122 (void) close(ut); 123 if (w == NULL) 124 return; 125 wclear(w); 126 wrefresh(w); 127 } 128 129 130 static struct nlist namelist[] = { 131 #define X_CPTIME 0 132 { "_cp_time" }, 133 #define X_CNT 1 134 { "_cnt" }, 135 #define X_TOTAL 2 136 { "_total" }, 137 #define X_DK_BUSY 3 138 { "_dk_busy" }, 139 #define X_DK_TIME 4 140 { "_dk_time" }, 141 #define X_DK_XFER 5 142 { "_dk_xfer" }, 143 #define X_DK_WDS 6 144 { "_dk_wds" }, 145 #define X_DK_SEEK 7 146 { "_dk_seek" }, 147 #define X_NCHSTATS 8 148 { "_nchstats" }, 149 #define X_INTRNAMES 9 150 { "_intrnames" }, 151 #define X_EINTRNAMES 10 152 { "_eintrnames" }, 153 #define X_INTRCNT 11 154 { "_intrcnt" }, 155 #define X_EINTRCNT 12 156 { "_eintrcnt" }, 157 { "" }, 158 }; 159 160 /* 161 * These constants define where the major pieces are laid out 162 */ 163 #define STATROW 0 /* uses 1 row and 68 cols */ 164 #define STATCOL 2 165 #define MEMROW 2 /* uses 4 rows and 31 cols */ 166 #define MEMCOL 0 167 #define PAGEROW 2 /* uses 4 rows and 26 cols */ 168 #define PAGECOL 36 169 #define INTSROW 2 /* uses all rows to bottom and 17 cols */ 170 #define INTSCOL 63 171 #define PROCSROW 7 /* uses 2 rows and 20 cols */ 172 #define PROCSCOL 0 173 #define GENSTATROW 7 /* uses 2 rows and 30 cols */ 174 #define GENSTATCOL 20 175 #define VMSTATROW 6 /* uses 17 rows and 12 cols */ 176 #define VMSTATCOL 48 177 #define GRAPHROW 10 /* uses 3 rows and 51 cols */ 178 #define GRAPHCOL 0 179 #define NAMEIROW 14 /* uses 3 rows and 38 cols */ 180 #define NAMEICOL 0 181 #define DISKROW 18 /* uses 5 rows and 50 cols (for 9 drives) */ 182 #define DISKCOL 0 183 184 #define DRIVESPACE 9 /* max # for space */ 185 186 #if DK_NDRIVE > DRIVESPACE 187 #define MAXDRIVES DRIVESPACE /* max # to display */ 188 #else 189 #define MAXDRIVES DK_NDRIVE /* max # to display */ 190 #endif 191 192 int 193 initkre() 194 { 195 char *intrnamebuf, *cp; 196 int i; 197 static int once = 0; 198 199 if (namelist[0].n_type == 0) { 200 if (kvm_nlist(kd, namelist)) { 201 nlisterr(namelist); 202 return(0); 203 } 204 if (namelist[0].n_type == 0) { 205 error("No namelist"); 206 return(0); 207 } 208 } 209 if (! dkinit()) 210 return(0); 211 if (dk_ndrive && !once) { 212 #define allocate(e, t) \ 213 s./**/e = (t *)calloc(dk_ndrive, sizeof (t)); \ 214 s1./**/e = (t *)calloc(dk_ndrive, sizeof (t)); \ 215 s2./**/e = (t *)calloc(dk_ndrive, sizeof (t)); \ 216 z./**/e = (t *)calloc(dk_ndrive, sizeof (t)); 217 allocate(dk_time, long); 218 allocate(dk_wds, long); 219 allocate(dk_seek, long); 220 allocate(dk_xfer, long); 221 once = 1; 222 #undef allocate 223 } 224 if (nintr == 0) { 225 nintr = (namelist[X_EINTRCNT].n_value - 226 namelist[X_INTRCNT].n_value) / sizeof (long); 227 intrloc = calloc(nintr, sizeof (long)); 228 intrname = calloc(nintr, sizeof (long)); 229 intrnamebuf = malloc(namelist[X_EINTRNAMES].n_value - 230 namelist[X_INTRNAMES].n_value); 231 if (intrnamebuf == 0 || intrname == 0 || intrloc == 0) { 232 error("Out of memory\n"); 233 if (intrnamebuf) 234 free(intrnamebuf); 235 if (intrname) 236 free(intrname); 237 if (intrloc) 238 free(intrloc); 239 nintr = 0; 240 return(0); 241 } 242 NREAD(X_INTRNAMES, intrnamebuf, NVAL(X_EINTRNAMES) - 243 NVAL(X_INTRNAMES)); 244 for (cp = intrnamebuf, i = 0; i < nintr; i++) { 245 intrname[i] = cp; 246 cp += strlen(cp) + 1; 247 } 248 nextintsrow = INTSROW + 2; 249 allocinfo(&s); 250 allocinfo(&s1); 251 allocinfo(&s2); 252 allocinfo(&z); 253 } 254 getinfo(&s2, RUN); 255 copyinfo(&s2, &s1); 256 return(1); 257 } 258 259 void 260 fetchkre() 261 { 262 time_t now; 263 264 time(&now); 265 strcpy(buf, ctime(&now)); 266 buf[16] = '\0'; 267 getinfo(&s, state); 268 } 269 270 void 271 labelkre() 272 { 273 register int i, j; 274 275 clear(); 276 mvprintw(STATROW, STATCOL + 4, "users Load"); 277 mvprintw(MEMROW, MEMCOL, "Mem:KB REAL VIRTUAL"); 278 mvprintw(MEMROW + 1, MEMCOL, " Tot Share Tot Share"); 279 mvprintw(MEMROW + 2, MEMCOL, "Act"); 280 mvprintw(MEMROW + 3, MEMCOL, "All"); 281 282 mvprintw(MEMROW + 1, MEMCOL + 31, "Free"); 283 284 mvprintw(PAGEROW, PAGECOL, " VN PAGER SWAP PAGER "); 285 mvprintw(PAGEROW + 1, PAGECOL, " in out in out "); 286 mvprintw(PAGEROW + 2, PAGECOL, "count"); 287 mvprintw(PAGEROW + 3, PAGECOL, "pages"); 288 289 mvprintw(INTSROW, INTSCOL + 3, " Interrupts"); 290 mvprintw(INTSROW + 1, INTSCOL + 9, "total"); 291 292 mvprintw(VMSTATROW + 0, VMSTATCOL + 10, "cow"); 293 mvprintw(VMSTATROW + 1, VMSTATCOL + 10, "objlk"); 294 mvprintw(VMSTATROW + 2, VMSTATCOL + 10, "objht"); 295 mvprintw(VMSTATROW + 3, VMSTATCOL + 10, "zfod"); 296 mvprintw(VMSTATROW + 4, VMSTATCOL + 10, "nzfod"); 297 mvprintw(VMSTATROW + 5, VMSTATCOL + 10, "%%zfod"); 298 mvprintw(VMSTATROW + 6, VMSTATCOL + 10, "kern"); 299 mvprintw(VMSTATROW + 7, VMSTATCOL + 10, "wire"); 300 mvprintw(VMSTATROW + 8, VMSTATCOL + 10, "act"); 301 mvprintw(VMSTATROW + 9, VMSTATCOL + 10, "inact"); 302 mvprintw(VMSTATROW + 10, VMSTATCOL + 10, "free"); 303 mvprintw(VMSTATROW + 11, VMSTATCOL + 10, "daefr"); 304 mvprintw(VMSTATROW + 12, VMSTATCOL + 10, "prcfr"); 305 mvprintw(VMSTATROW + 13, VMSTATCOL + 10, "react"); 306 mvprintw(VMSTATROW + 14, VMSTATCOL + 10, "pdwake"); 307 mvprintw(VMSTATROW + 15, VMSTATCOL + 10, "pdpgs"); 308 if (LINES - 1 > VMSTATROW + 16) 309 mvprintw(VMSTATROW + 16, VMSTATCOL + 10, "intrn"); 310 311 mvprintw(GENSTATROW, GENSTATCOL, " Csw Trp Sys Int Sof Flt"); 312 313 mvprintw(GRAPHROW, GRAPHCOL, 314 " . %%Sys . %%Intr . %%User . %%Nice . %%Idle"); 315 mvprintw(PROCSROW, PROCSCOL, "Proc:r p d s w"); 316 mvprintw(GRAPHROW + 1, GRAPHCOL, 317 "| | | | | | | | | | |"); 318 319 mvprintw(NAMEIROW, NAMEICOL, "Namei Sys-cache Proc-cache"); 320 mvprintw(NAMEIROW + 1, NAMEICOL, 321 " Calls hits %% hits %%"); 322 mvprintw(DISKROW, DISKCOL, "Discs"); 323 mvprintw(DISKROW + 1, DISKCOL, "seeks"); 324 mvprintw(DISKROW + 2, DISKCOL, "xfers"); 325 mvprintw(DISKROW + 3, DISKCOL, " blks"); 326 mvprintw(DISKROW + 4, DISKCOL, " msps"); 327 j = 0; 328 for (i = 0; i < dk_ndrive && j < MAXDRIVES; i++) 329 if (dk_select[i]) { 330 mvprintw(DISKROW, DISKCOL + 5 + 5 * j, 331 " %3.3s", dr_name[j]); 332 j++; 333 } 334 for (i = 0; i < nintr; i++) { 335 if (intrloc[i] == 0) 336 continue; 337 mvprintw(intrloc[i], INTSCOL + 9, "%-8.8s", intrname[i]); 338 } 339 } 340 341 #define X(fld) {t=s.fld[i]; s.fld[i]-=s1.fld[i]; if(state==TIME) s1.fld[i]=t;} 342 #define Y(fld) {t = s.fld; s.fld -= s1.fld; if(state == TIME) s1.fld = t;} 343 #define Z(fld) {t = s.nchstats.fld; s.nchstats.fld -= s1.nchstats.fld; \ 344 if(state == TIME) s1.nchstats.fld = t;} 345 #define PUTRATE(fld, l, c, w) \ 346 Y(fld); \ 347 putint((int)((float)s.fld/etime + 0.5), l, c, w) 348 #define MAXFAIL 5 349 350 static char cpuchar[CPUSTATES] = { '=' , '+', '>', '-', ' ' }; 351 static char cpuorder[CPUSTATES] = { CP_SYS, CP_INTR, CP_USER, CP_NICE, 352 CP_IDLE }; 353 354 void 355 showkre() 356 { 357 float f1, f2; 358 int psiz, inttotal; 359 int i, l, c; 360 static int failcnt = 0; 361 362 for (i = 0; i < dk_ndrive; i++) { 363 X(dk_xfer); X(dk_seek); X(dk_wds); X(dk_time); 364 } 365 etime = 0; 366 for(i = 0; i < CPUSTATES; i++) { 367 X(time); 368 etime += s.time[i]; 369 } 370 if (etime < 5.0) { /* < 5 ticks - ignore this trash */ 371 if (failcnt++ >= MAXFAIL) { 372 clear(); 373 mvprintw(2, 10, "The alternate system clock has died!"); 374 mvprintw(3, 10, "Reverting to ``pigs'' display."); 375 move(CMDLINE, 0); 376 refresh(); 377 failcnt = 0; 378 sleep(5); 379 command("pigs"); 380 } 381 return; 382 } 383 failcnt = 0; 384 etime /= hertz; 385 inttotal = 0; 386 for (i = 0; i < nintr; i++) { 387 if (s.intrcnt[i] == 0) 388 continue; 389 if (intrloc[i] == 0) { 390 if (nextintsrow == LINES) 391 continue; 392 intrloc[i] = nextintsrow++; 393 mvprintw(intrloc[i], INTSCOL + 9, "%-8.8s", 394 intrname[i]); 395 } 396 X(intrcnt); 397 l = (int)((float)s.intrcnt[i]/etime + 0.5); 398 inttotal += l; 399 putint(l, intrloc[i], INTSCOL, 8); 400 } 401 putint(inttotal, INTSROW + 1, INTSCOL, 8); 402 Z(ncs_goodhits); Z(ncs_badhits); Z(ncs_miss); 403 Z(ncs_long); Z(ncs_pass2); Z(ncs_2passes); 404 s.nchcount = nchtotal.ncs_goodhits + nchtotal.ncs_badhits + 405 nchtotal.ncs_miss + nchtotal.ncs_long; 406 if (state == TIME) 407 s1.nchcount = s.nchcount; 408 409 psiz = 0; 410 f2 = 0.0; 411 for (c = 0; c < CPUSTATES; c++) { 412 i = cpuorder[c]; 413 f1 = cputime(i); 414 f2 += f1; 415 l = (int) ((f2 + 1.0) / 2.0) - psiz; 416 if (f1 > 99.9) 417 f1 = 99.9; /* no room to display 100.0 */ 418 putfloat(f1, GRAPHROW, GRAPHCOL + 10 * c, 4, 1, 0); 419 move(GRAPHROW + 2, psiz); 420 psiz += l; 421 while (l-- > 0) 422 addch(cpuchar[c]); 423 } 424 425 putint(ucount(), STATROW, STATCOL, 3); 426 putfloat(avenrun[0], STATROW, STATCOL + 17, 6, 2, 0); 427 putfloat(avenrun[1], STATROW, STATCOL + 23, 6, 2, 0); 428 putfloat(avenrun[2], STATROW, STATCOL + 29, 6, 2, 0); 429 mvaddstr(STATROW, STATCOL + 53, buf); 430 #define pgtokb(pg) ((pg) * cnt.v_page_size / 1024) 431 putint(pgtokb(total.t_arm), MEMROW + 2, MEMCOL + 3, 6); 432 putint(pgtokb(total.t_armshr), MEMROW + 2, MEMCOL + 9, 6); 433 putint(pgtokb(total.t_avm), MEMROW + 2, MEMCOL + 15, 7); 434 putint(pgtokb(total.t_avmshr), MEMROW + 2, MEMCOL + 22, 7); 435 putint(pgtokb(total.t_rm), MEMROW + 3, MEMCOL + 3, 6); 436 putint(pgtokb(total.t_rmshr), MEMROW + 3, MEMCOL + 9, 6); 437 putint(pgtokb(total.t_vm), MEMROW + 3, MEMCOL + 15, 7); 438 putint(pgtokb(total.t_vmshr), MEMROW + 3, MEMCOL + 22, 7); 439 putint(pgtokb(total.t_free), MEMROW + 2, MEMCOL + 29, 6); 440 putint(total.t_rq - 1, PROCSROW + 1, PROCSCOL + 3, 3); 441 putint(total.t_pw, PROCSROW + 1, PROCSCOL + 6, 3); 442 putint(total.t_dw, PROCSROW + 1, PROCSCOL + 9, 3); 443 putint(total.t_sl, PROCSROW + 1, PROCSCOL + 12, 3); 444 putint(total.t_sw, PROCSROW + 1, PROCSCOL + 15, 3); 445 PUTRATE(Cnt.v_cow_faults, VMSTATROW + 0, VMSTATCOL + 3, 6); 446 PUTRATE(Cnt.v_lookups, VMSTATROW + 1, VMSTATCOL + 3, 6); 447 PUTRATE(Cnt.v_hits, VMSTATROW + 2, VMSTATCOL + 3, 6); 448 PUTRATE(Cnt.v_zfod, VMSTATROW + 3, VMSTATCOL + 4, 5); 449 PUTRATE(Cnt.v_nzfod, VMSTATROW + 4, VMSTATCOL + 3, 6); 450 { 451 unsigned long tot = cnt.v_zfod + cnt.v_nzfod; 452 putfloat(tot == 0 ? 0.0 : (100.0 * cnt.v_zfod / tot), 453 VMSTATROW + 5, VMSTATCOL + 2, 7, 2, 1); 454 } 455 putint(pgtokb(cnt.v_kernel_pages), VMSTATROW + 6, VMSTATCOL, 9); 456 putint(pgtokb(cnt.v_wire_count), VMSTATROW + 7, VMSTATCOL, 9); 457 putint(pgtokb(cnt.v_active_count), VMSTATROW + 8, VMSTATCOL, 9); 458 putint(pgtokb(cnt.v_inactive_count), VMSTATROW + 9, VMSTATCOL, 9); 459 putint(pgtokb(cnt.v_free_count), VMSTATROW + 10, VMSTATCOL, 9); 460 PUTRATE(Cnt.v_dfree, VMSTATROW + 11, VMSTATCOL, 9); 461 PUTRATE(Cnt.v_pfree, VMSTATROW + 12, VMSTATCOL, 9); 462 PUTRATE(Cnt.v_reactivated, VMSTATROW + 13, VMSTATCOL, 9); 463 PUTRATE(Cnt.v_pdwakeups, VMSTATROW + 14, VMSTATCOL, 9); 464 PUTRATE(Cnt.v_pdpages, VMSTATROW + 15, VMSTATCOL, 9); 465 if (LINES - 1 > VMSTATROW + 16) 466 PUTRATE(Cnt.v_intrans, VMSTATROW + 16, VMSTATCOL, 9); 467 PUTRATE(Cnt.v_vnodein, PAGEROW + 2, PAGECOL + 5, 5); 468 PUTRATE(Cnt.v_vnodeout, PAGEROW + 2, PAGECOL + 10, 5); 469 PUTRATE(Cnt.v_swapin, PAGEROW + 2, PAGECOL + 17, 5); 470 PUTRATE(Cnt.v_swapout, PAGEROW + 2, PAGECOL + 22, 5); 471 PUTRATE(Cnt.v_vnodepgsin, PAGEROW + 3, PAGECOL + 5, 5); 472 PUTRATE(Cnt.v_vnodepgsout, PAGEROW + 3, PAGECOL + 10, 5); 473 PUTRATE(Cnt.v_swappgsin, PAGEROW + 3, PAGECOL + 17, 5); 474 PUTRATE(Cnt.v_swappgsout, PAGEROW + 3, PAGECOL + 22, 5); 475 PUTRATE(Cnt.v_swtch, GENSTATROW + 1, GENSTATCOL, 5); 476 PUTRATE(Cnt.v_trap, GENSTATROW + 1, GENSTATCOL + 5, 5); 477 PUTRATE(Cnt.v_syscall, GENSTATROW + 1, GENSTATCOL + 10, 5); 478 PUTRATE(Cnt.v_intr, GENSTATROW + 1, GENSTATCOL + 15, 5); 479 PUTRATE(Cnt.v_soft, GENSTATROW + 1, GENSTATCOL + 20, 5); 480 PUTRATE(Cnt.v_vm_faults, GENSTATROW + 1, GENSTATCOL + 25, 5); 481 mvprintw(DISKROW, DISKCOL + 5, " "); 482 for (i = 0, c = 0; i < dk_ndrive && c < MAXDRIVES; i++) 483 if (dk_select[i]) { 484 mvprintw(DISKROW, DISKCOL + 5 + 5 * c, 485 " %3.3s", dr_name[i]); 486 dinfo(i, ++c); 487 } 488 putint(s.nchcount, NAMEIROW + 2, NAMEICOL, 9); 489 putint(nchtotal.ncs_goodhits, NAMEIROW + 2, NAMEICOL + 9, 9); 490 #define nz(x) ((x) ? (x) : 1) 491 putfloat(nchtotal.ncs_goodhits * 100.0 / nz(s.nchcount), 492 NAMEIROW + 2, NAMEICOL + 19, 4, 0, 1); 493 putint(nchtotal.ncs_pass2, NAMEIROW + 2, NAMEICOL + 23, 9); 494 putfloat(nchtotal.ncs_pass2 * 100.0 / nz(s.nchcount), 495 NAMEIROW + 2, NAMEICOL + 34, 4, 0, 1); 496 #undef nz 497 } 498 499 int 500 cmdkre(cmd, args) 501 char *cmd, *args; 502 { 503 504 if (prefix(cmd, "run")) { 505 copyinfo(&s2, &s1); 506 state = RUN; 507 return (1); 508 } 509 if (prefix(cmd, "boot")) { 510 state = BOOT; 511 copyinfo(&z, &s1); 512 return (1); 513 } 514 if (prefix(cmd, "time")) { 515 state = TIME; 516 return (1); 517 } 518 if (prefix(cmd, "zero")) { 519 if (state == RUN) 520 getinfo(&s1, RUN); 521 return (1); 522 } 523 return (dkcmd(cmd, args)); 524 } 525 526 /* calculate number of users on the system */ 527 static int 528 ucount() 529 { 530 register int nusers = 0; 531 532 if (ut < 0) 533 return (0); 534 while (read(ut, &utmp, sizeof(utmp))) 535 if (utmp.ut_name[0] != '\0') 536 nusers++; 537 538 lseek(ut, 0L, L_SET); 539 return (nusers); 540 } 541 542 static float 543 cputime(indx) 544 int indx; 545 { 546 double t; 547 register int i; 548 549 t = 0; 550 for (i = 0; i < CPUSTATES; i++) 551 t += s.time[i]; 552 if (t == 0.0) 553 t = 1.0; 554 return (s.time[indx] * 100.0 / t); 555 } 556 557 static void 558 putint(n, l, c, w) 559 int n, l, c, w; 560 { 561 char b[128]; 562 563 move(l, c); 564 if (n == 0) { 565 while (w-- > 0) 566 addch(' '); 567 return; 568 } 569 sprintf(b, "%*d", w, n); 570 if (strlen(b) > w) { 571 while (w-- > 0) 572 addch('*'); 573 return; 574 } 575 addstr(b); 576 } 577 578 static void 579 putfloat(f, l, c, w, d, nz) 580 double f; 581 int l, c, w, d, nz; 582 { 583 char b[128]; 584 585 move(l, c); 586 if (nz && f == 0.0) { 587 while (--w >= 0) 588 addch(' '); 589 return; 590 } 591 sprintf(b, "%*.*f", w, d, f); 592 if (strlen(b) > w) { 593 while (--w >= 0) 594 addch('*'); 595 return; 596 } 597 addstr(b); 598 } 599 600 static void 601 getinfo(s, st) 602 struct Info *s; 603 enum state st; 604 { 605 int mib[2], size; 606 extern int errno; 607 608 NREAD(X_CPTIME, s->time, sizeof s->time); 609 NREAD(X_CNT, &s->Cnt, sizeof s->Cnt); 610 NREAD(X_DK_BUSY, &s->dk_busy, LONG); 611 NREAD(X_DK_TIME, s->dk_time, dk_ndrive * LONG); 612 NREAD(X_DK_XFER, s->dk_xfer, dk_ndrive * LONG); 613 NREAD(X_DK_WDS, s->dk_wds, dk_ndrive * LONG); 614 NREAD(X_DK_SEEK, s->dk_seek, dk_ndrive * LONG); 615 NREAD(X_NCHSTATS, &s->nchstats, sizeof s->nchstats); 616 NREAD(X_INTRCNT, s->intrcnt, nintr * LONG); 617 size = sizeof(s->Total); 618 mib[0] = CTL_VM; 619 mib[1] = VM_METER; 620 if (sysctl(mib, 2, &s->Total, &size, NULL, 0) < 0) { 621 error("Can't get kernel info: %s\n", strerror(errno)); 622 bzero(&s->Total, sizeof(s->Total)); 623 } 624 } 625 626 static void 627 allocinfo(s) 628 struct Info *s; 629 { 630 631 s->intrcnt = (long *) malloc(nintr * sizeof(long)); 632 if (s->intrcnt == NULL) { 633 fprintf(stderr, "systat: out of memory\n"); 634 exit(2); 635 } 636 } 637 638 static void 639 copyinfo(from, to) 640 register struct Info *from, *to; 641 { 642 long *time, *wds, *seek, *xfer; 643 long *intrcnt; 644 645 /* 646 * time, wds, seek, and xfer are malloc'd so we have to 647 * save the pointers before the structure copy and then 648 * copy by hand. 649 */ 650 time = to->dk_time; wds = to->dk_wds; seek = to->dk_seek; 651 xfer = to->dk_xfer; intrcnt = to->intrcnt; 652 *to = *from; 653 bcopy(from->dk_time, to->dk_time = time, dk_ndrive * sizeof (long)); 654 bcopy(from->dk_wds, to->dk_wds = wds, dk_ndrive * sizeof (long)); 655 bcopy(from->dk_seek, to->dk_seek = seek, dk_ndrive * sizeof (long)); 656 bcopy(from->dk_xfer, to->dk_xfer = xfer, dk_ndrive * sizeof (long)); 657 bcopy(from->intrcnt, to->intrcnt = intrcnt, nintr * sizeof (int)); 658 } 659 660 static void 661 dinfo(dn, c) 662 int dn, c; 663 { 664 double words, atime, itime, xtime; 665 666 c = DISKCOL + c * 5; 667 atime = s.dk_time[dn]; 668 atime /= hertz; 669 words = s.dk_wds[dn]*32.0; /* number of words transferred */ 670 xtime = dk_mspw[dn]*words; /* transfer time */ 671 itime = atime - xtime; /* time not transferring */ 672 if (xtime < 0) 673 itime += xtime, xtime = 0; 674 if (itime < 0) 675 xtime += itime, itime = 0; 676 putint((int)((float)s.dk_seek[dn]/etime+0.5), DISKROW + 1, c, 5); 677 putint((int)((float)s.dk_xfer[dn]/etime+0.5), DISKROW + 2, c, 5); 678 putint((int)(words/etime/512.0 + 0.5), DISKROW + 3, c, 5); 679 if (s.dk_seek[dn]) 680 putfloat(itime*1000.0/s.dk_seek[dn], DISKROW + 4, c, 5, 1, 1); 681 else 682 putint(0, DISKROW + 4, c, 5); 683 } 684