1 /*-
2 * Copyright (c) 1983, 1989, 1992, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * %sccs.include.redist.c%
6 */
7
8 #ifndef lint
9 static char sccsid[] = "@(#)vmstat.c 8.2 (Berkeley) 01/12/94";
10 #endif /* not lint */
11
12 /*
13 * Cursed vmstat -- from Robert Elz.
14 */
15
16 #include <sys/param.h>
17 #include <sys/dkstat.h>
18 #include <sys/buf.h>
19 #include <sys/stat.h>
20 #include <sys/time.h>
21 #include <sys/user.h>
22 #include <sys/proc.h>
23 #include <sys/namei.h>
24 #include <sys/sysctl.h>
25 #include <vm/vm.h>
26
27 #include <signal.h>
28 #include <nlist.h>
29 #include <ctype.h>
30 #include <utmp.h>
31 #include <paths.h>
32 #include <string.h>
33 #include <stdlib.h>
34 #include <unistd.h>
35 #include "systat.h"
36 #include "extern.h"
37
38 static struct Info {
39 long time[CPUSTATES];
40 struct vmmeter Cnt;
41 struct vmtotal Total;
42 long *dk_time;
43 long *dk_wds;
44 long *dk_seek;
45 long *dk_xfer;
46 int dk_busy;
47 struct nchstats nchstats;
48 long nchcount;
49 long *intrcnt;
50 } s, s1, s2, z;
51
52 #define cnt s.Cnt
53 #define oldcnt s1.Cnt
54 #define total s.Total
55 #define nchtotal s.nchstats
56 #define oldnchtotal s1.nchstats
57
58 static enum state { BOOT, TIME, RUN } state = TIME;
59
60 static void allocinfo __P((struct Info *));
61 static void copyinfo __P((struct Info *, struct Info *));
62 static float cputime __P((int));
63 static void dinfo __P((int, int));
64 static void getinfo __P((struct Info *, enum state));
65 static void putint __P((int, int, int, int));
66 static void putfloat __P((double, int, int, int, int, int));
67 static int ucount __P((void));
68
69 static int ut;
70 static char buf[26];
71 static time_t t;
72 static double etime;
73 static float hertz;
74 static int nintr;
75 static long *intrloc;
76 static char **intrname;
77 static int nextintsrow;
78
79 struct utmp utmp;
80
81
82 WINDOW *
openkre()83 openkre()
84 {
85
86 ut = open(_PATH_UTMP, O_RDONLY);
87 if (ut < 0)
88 error("No utmp");
89 return (stdscr);
90 }
91
92 void
closekre(w)93 closekre(w)
94 WINDOW *w;
95 {
96
97 (void) close(ut);
98 if (w == NULL)
99 return;
100 wclear(w);
101 wrefresh(w);
102 }
103
104
105 static struct nlist namelist[] = {
106 #define X_CPTIME 0
107 { "_cp_time" },
108 #define X_CNT 1
109 { "_cnt" },
110 #define X_TOTAL 2
111 { "_total" },
112 #define X_DK_BUSY 3
113 { "_dk_busy" },
114 #define X_DK_TIME 4
115 { "_dk_time" },
116 #define X_DK_XFER 5
117 { "_dk_xfer" },
118 #define X_DK_WDS 6
119 { "_dk_wds" },
120 #define X_DK_SEEK 7
121 { "_dk_seek" },
122 #define X_NCHSTATS 8
123 { "_nchstats" },
124 #define X_INTRNAMES 9
125 { "_intrnames" },
126 #define X_EINTRNAMES 10
127 { "_eintrnames" },
128 #define X_INTRCNT 11
129 { "_intrcnt" },
130 #define X_EINTRCNT 12
131 { "_eintrcnt" },
132 { "" },
133 };
134
135 /*
136 * These constants define where the major pieces are laid out
137 */
138 #define STATROW 0 /* uses 1 row and 68 cols */
139 #define STATCOL 2
140 #define MEMROW 2 /* uses 4 rows and 31 cols */
141 #define MEMCOL 0
142 #define PAGEROW 2 /* uses 4 rows and 26 cols */
143 #define PAGECOL 36
144 #define INTSROW 2 /* uses all rows to bottom and 17 cols */
145 #define INTSCOL 63
146 #define PROCSROW 7 /* uses 2 rows and 20 cols */
147 #define PROCSCOL 0
148 #define GENSTATROW 7 /* uses 2 rows and 30 cols */
149 #define GENSTATCOL 20
150 #define VMSTATROW 7 /* uses 17 rows and 12 cols */
151 #define VMSTATCOL 48
152 #define GRAPHROW 10 /* uses 3 rows and 51 cols */
153 #define GRAPHCOL 0
154 #define NAMEIROW 14 /* uses 3 rows and 38 cols */
155 #define NAMEICOL 0
156 #define DISKROW 18 /* uses 5 rows and 50 cols (for 9 drives) */
157 #define DISKCOL 0
158
159 #define DRIVESPACE 9 /* max # for space */
160
161 #if DK_NDRIVE > DRIVESPACE
162 #define MAXDRIVES DRIVESPACE /* max # to display */
163 #else
164 #define MAXDRIVES DK_NDRIVE /* max # to display */
165 #endif
166
167 int
initkre()168 initkre()
169 {
170 char *intrnamebuf, *cp;
171 int i;
172 static int once = 0;
173
174 if (namelist[0].n_type == 0) {
175 if (kvm_nlist(kd, namelist)) {
176 nlisterr(namelist);
177 return(0);
178 }
179 if (namelist[0].n_type == 0) {
180 error("No namelist");
181 return(0);
182 }
183 }
184 hertz = stathz ? stathz : hz;
185 if (! dkinit())
186 return(0);
187 if (dk_ndrive && !once) {
188 #define allocate(e, t) \
189 s./**/e = (t *)calloc(dk_ndrive, sizeof (t)); \
190 s1./**/e = (t *)calloc(dk_ndrive, sizeof (t)); \
191 s2./**/e = (t *)calloc(dk_ndrive, sizeof (t)); \
192 z./**/e = (t *)calloc(dk_ndrive, sizeof (t));
193 allocate(dk_time, long);
194 allocate(dk_wds, long);
195 allocate(dk_seek, long);
196 allocate(dk_xfer, long);
197 once = 1;
198 #undef allocate
199 }
200 if (nintr == 0) {
201 nintr = (namelist[X_EINTRCNT].n_value -
202 namelist[X_INTRCNT].n_value) / sizeof (long);
203 intrloc = calloc(nintr, sizeof (long));
204 intrname = calloc(nintr, sizeof (long));
205 intrnamebuf = malloc(namelist[X_EINTRNAMES].n_value -
206 namelist[X_INTRNAMES].n_value);
207 if (intrnamebuf == 0 || intrname == 0 || intrloc == 0) {
208 error("Out of memory\n");
209 if (intrnamebuf)
210 free(intrnamebuf);
211 if (intrname)
212 free(intrname);
213 if (intrloc)
214 free(intrloc);
215 nintr = 0;
216 return(0);
217 }
218 NREAD(X_INTRNAMES, intrnamebuf, NVAL(X_EINTRNAMES) -
219 NVAL(X_INTRNAMES));
220 for (cp = intrnamebuf, i = 0; i < nintr; i++) {
221 intrname[i] = cp;
222 cp += strlen(cp) + 1;
223 }
224 nextintsrow = INTSROW + 2;
225 allocinfo(&s);
226 allocinfo(&s1);
227 allocinfo(&s2);
228 allocinfo(&z);
229 }
230 getinfo(&s2, RUN);
231 copyinfo(&s2, &s1);
232 return(1);
233 }
234
235 void
fetchkre()236 fetchkre()
237 {
238 time_t now;
239
240 time(&now);
241 strcpy(buf, ctime(&now));
242 buf[16] = '\0';
243 getinfo(&s, state);
244 }
245
246 void
labelkre()247 labelkre()
248 {
249 register int i, j;
250
251 clear();
252 mvprintw(STATROW, STATCOL + 4, "users Load");
253 mvprintw(MEMROW, MEMCOL, "Mem:KB REAL VIRTUAL");
254 mvprintw(MEMROW + 1, MEMCOL, " Tot Share Tot Share");
255 mvprintw(MEMROW + 2, MEMCOL, "Act");
256 mvprintw(MEMROW + 3, MEMCOL, "All");
257
258 mvprintw(MEMROW + 1, MEMCOL + 31, "Free");
259
260 mvprintw(PAGEROW, PAGECOL, " PAGING SWAPPING ");
261 mvprintw(PAGEROW + 1, PAGECOL, " in out in out ");
262 mvprintw(PAGEROW + 2, PAGECOL, "count");
263 mvprintw(PAGEROW + 3, PAGECOL, "pages");
264
265 mvprintw(INTSROW, INTSCOL + 3, " Interrupts");
266 mvprintw(INTSROW + 1, INTSCOL + 9, "total");
267
268 mvprintw(VMSTATROW + 0, VMSTATCOL + 10, "cow");
269 mvprintw(VMSTATROW + 1, VMSTATCOL + 10, "objlk");
270 mvprintw(VMSTATROW + 2, VMSTATCOL + 10, "objht");
271 mvprintw(VMSTATROW + 3, VMSTATCOL + 10, "zfod");
272 mvprintw(VMSTATROW + 4, VMSTATCOL + 10, "nzfod");
273 mvprintw(VMSTATROW + 5, VMSTATCOL + 10, "%%zfod");
274 mvprintw(VMSTATROW + 6, VMSTATCOL + 10, "kern");
275 mvprintw(VMSTATROW + 7, VMSTATCOL + 10, "wire");
276 mvprintw(VMSTATROW + 8, VMSTATCOL + 10, "act");
277 mvprintw(VMSTATROW + 9, VMSTATCOL + 10, "inact");
278 mvprintw(VMSTATROW + 10, VMSTATCOL + 10, "free");
279 mvprintw(VMSTATROW + 11, VMSTATCOL + 10, "daefr");
280 mvprintw(VMSTATROW + 12, VMSTATCOL + 10, "prcfr");
281 mvprintw(VMSTATROW + 13, VMSTATCOL + 10, "react");
282 mvprintw(VMSTATROW + 14, VMSTATCOL + 10, "scan");
283 mvprintw(VMSTATROW + 15, VMSTATCOL + 10, "hdrev");
284 if (LINES - 1 > VMSTATROW + 16)
285 mvprintw(VMSTATROW + 16, VMSTATCOL + 10, "intrn");
286
287 mvprintw(GENSTATROW, GENSTATCOL, " Csw Trp Sys Int Sof Flt");
288
289 mvprintw(GRAPHROW, GRAPHCOL,
290 " . %% Sys . %% User . %% Nice . %% Idle");
291 mvprintw(PROCSROW, PROCSCOL, "Proc:r p d s w");
292 mvprintw(GRAPHROW + 1, GRAPHCOL,
293 "| | | | | | | | | | |");
294
295 mvprintw(NAMEIROW, NAMEICOL, "Namei Sys-cache Proc-cache");
296 mvprintw(NAMEIROW + 1, NAMEICOL,
297 " Calls hits %% hits %%");
298 mvprintw(DISKROW, DISKCOL, "Discs");
299 mvprintw(DISKROW + 1, DISKCOL, "seeks");
300 mvprintw(DISKROW + 2, DISKCOL, "xfers");
301 mvprintw(DISKROW + 3, DISKCOL, " blks");
302 mvprintw(DISKROW + 4, DISKCOL, " msps");
303 j = 0;
304 for (i = 0; i < dk_ndrive && j < MAXDRIVES; i++)
305 if (dk_select[i]) {
306 mvprintw(DISKROW, DISKCOL + 5 + 5 * j,
307 " %3.3s", dr_name[j]);
308 j++;
309 }
310 for (i = 0; i < nintr; i++) {
311 if (intrloc[i] == 0)
312 continue;
313 mvprintw(intrloc[i], INTSCOL + 9, "%-8.8s", intrname[i]);
314 }
315 }
316
317 #define X(fld) {t=s.fld[i]; s.fld[i]-=s1.fld[i]; if(state==TIME) s1.fld[i]=t;}
318 #define Y(fld) {t = s.fld; s.fld -= s1.fld; if(state == TIME) s1.fld = t;}
319 #define Z(fld) {t = s.nchstats.fld; s.nchstats.fld -= s1.nchstats.fld; \
320 if(state == TIME) s1.nchstats.fld = t;}
321 #define PUTRATE(fld, l, c, w) \
322 Y(fld); \
323 putint((int)((float)s.fld/etime + 0.5), l, c, w)
324 #define MAXFAIL 5
325
326 static char cpuchar[CPUSTATES] = { '=' , '>', '-', ' ' };
327 static char cpuorder[CPUSTATES] = { CP_SYS, CP_USER, CP_NICE, CP_IDLE };
328
329 void
showkre()330 showkre()
331 {
332 float f1, f2;
333 int psiz, inttotal;
334 int i, l, c;
335 static int failcnt = 0;
336
337 for (i = 0; i < dk_ndrive; i++) {
338 X(dk_xfer); X(dk_seek); X(dk_wds); X(dk_time);
339 }
340 etime = 0;
341 for(i = 0; i < CPUSTATES; i++) {
342 X(time);
343 etime += s.time[i];
344 }
345 if (etime < 5.0) { /* < 5 ticks - ignore this trash */
346 if (failcnt++ >= MAXFAIL) {
347 clear();
348 mvprintw(2, 10, "The alternate system clock has died!");
349 mvprintw(3, 10, "Reverting to ``pigs'' display.");
350 move(CMDLINE, 0);
351 refresh();
352 failcnt = 0;
353 sleep(5);
354 command("pigs");
355 }
356 return;
357 }
358 failcnt = 0;
359 etime /= hertz;
360 inttotal = 0;
361 for (i = 0; i < nintr; i++) {
362 if (s.intrcnt[i] == 0)
363 continue;
364 if (intrloc[i] == 0) {
365 if (nextintsrow == LINES)
366 continue;
367 intrloc[i] = nextintsrow++;
368 mvprintw(intrloc[i], INTSCOL + 9, "%-8.8s",
369 intrname[i]);
370 }
371 X(intrcnt);
372 l = (int)((float)s.intrcnt[i]/etime + 0.5);
373 inttotal += l;
374 putint(l, intrloc[i], INTSCOL, 8);
375 }
376 putint(inttotal, INTSROW + 1, INTSCOL, 8);
377 Z(ncs_goodhits); Z(ncs_badhits); Z(ncs_miss);
378 Z(ncs_long); Z(ncs_pass2); Z(ncs_2passes);
379 s.nchcount = nchtotal.ncs_goodhits + nchtotal.ncs_badhits +
380 nchtotal.ncs_miss + nchtotal.ncs_long;
381 if (state == TIME)
382 s1.nchcount = s.nchcount;
383
384 psiz = 0;
385 f2 = 0.0;
386
387 /*
388 * Last CPU state not calculated yet.
389 */
390 for (c = 0; c < CPUSTATES - 1; c++) {
391 i = cpuorder[c];
392 f1 = cputime(i);
393 f2 += f1;
394 l = (int) ((f2 + 1.0) / 2.0) - psiz;
395 if (c == 0)
396 putfloat(f1, GRAPHROW, GRAPHCOL + 1, 5, 1, 0);
397 else
398 putfloat(f1, GRAPHROW, GRAPHCOL + 12 * c,
399 5, 1, 0);
400 move(GRAPHROW + 2, psiz);
401 psiz += l;
402 while (l-- > 0)
403 addch(cpuchar[c]);
404 }
405
406 putint(ucount(), STATROW, STATCOL, 3);
407 putfloat(avenrun[0], STATROW, STATCOL + 17, 6, 2, 0);
408 putfloat(avenrun[1], STATROW, STATCOL + 23, 6, 2, 0);
409 putfloat(avenrun[2], STATROW, STATCOL + 29, 6, 2, 0);
410 mvaddstr(STATROW, STATCOL + 53, buf);
411 #define pgtokb(pg) ((pg) * cnt.v_page_size / 1024)
412 putint(pgtokb(total.t_arm), MEMROW + 2, MEMCOL + 3, 6);
413 putint(pgtokb(total.t_armshr), MEMROW + 2, MEMCOL + 9, 6);
414 putint(pgtokb(total.t_avm), MEMROW + 2, MEMCOL + 15, 7);
415 putint(pgtokb(total.t_avmshr), MEMROW + 2, MEMCOL + 22, 7);
416 putint(pgtokb(total.t_rm), MEMROW + 3, MEMCOL + 3, 6);
417 putint(pgtokb(total.t_rmshr), MEMROW + 3, MEMCOL + 9, 6);
418 putint(pgtokb(total.t_vm), MEMROW + 3, MEMCOL + 15, 7);
419 putint(pgtokb(total.t_vmshr), MEMROW + 3, MEMCOL + 22, 7);
420 putint(pgtokb(total.t_free), MEMROW + 2, MEMCOL + 29, 6);
421 putint(total.t_rq - 1, PROCSROW + 1, PROCSCOL + 3, 3);
422 putint(total.t_pw, PROCSROW + 1, PROCSCOL + 6, 3);
423 putint(total.t_dw, PROCSROW + 1, PROCSCOL + 9, 3);
424 putint(total.t_sl, PROCSROW + 1, PROCSCOL + 12, 3);
425 putint(total.t_sw, PROCSROW + 1, PROCSCOL + 15, 3);
426 PUTRATE(Cnt.v_cow_faults, VMSTATROW + 0, VMSTATCOL + 3, 6);
427 PUTRATE(Cnt.v_lookups, VMSTATROW + 1, VMSTATCOL + 3, 6);
428 PUTRATE(Cnt.v_hits, VMSTATROW + 2, VMSTATCOL + 3, 6);
429 PUTRATE(Cnt.v_zfod, VMSTATROW + 3, VMSTATCOL + 4, 5);
430 PUTRATE(Cnt.v_nzfod, VMSTATROW + 4, VMSTATCOL + 3, 6);
431 putfloat(cnt.v_nzfod == 0 ? 0.0 : (100.0 * cnt.v_zfod / cnt.v_nzfod),
432 VMSTATROW + 5, VMSTATCOL + 2, 7, 2, 1);
433 putint(pgtokb(cnt.v_kernel_pages), VMSTATROW + 6, VMSTATCOL, 9);
434 putint(pgtokb(cnt.v_wire_count), VMSTATROW + 7, VMSTATCOL, 9);
435 putint(pgtokb(cnt.v_active_count), VMSTATROW + 8, VMSTATCOL, 9);
436 putint(pgtokb(cnt.v_inactive_count), VMSTATROW + 9, VMSTATCOL, 9);
437 putint(pgtokb(cnt.v_free_count), VMSTATROW + 10, VMSTATCOL, 9);
438 PUTRATE(Cnt.v_dfree, VMSTATROW + 11, VMSTATCOL, 9);
439 PUTRATE(Cnt.v_pfree, VMSTATROW + 12, VMSTATCOL, 9);
440 PUTRATE(Cnt.v_reactivated, VMSTATROW + 13, VMSTATCOL, 9);
441 PUTRATE(Cnt.v_scan, VMSTATROW + 14, VMSTATCOL, 9);
442 PUTRATE(Cnt.v_rev, VMSTATROW + 15, VMSTATCOL, 9);
443 if (LINES - 1 > VMSTATROW + 16)
444 PUTRATE(Cnt.v_intrans, VMSTATROW + 16, VMSTATCOL, 9);
445 PUTRATE(Cnt.v_pageins, PAGEROW + 2, PAGECOL + 5, 5);
446 PUTRATE(Cnt.v_pageouts, PAGEROW + 2, PAGECOL + 10, 5);
447 PUTRATE(Cnt.v_swpin, PAGEROW + 2, PAGECOL + 15, 5); /* - */
448 PUTRATE(Cnt.v_swpout, PAGEROW + 2, PAGECOL + 20, 5); /* - */
449 PUTRATE(Cnt.v_pgpgin, PAGEROW + 3, PAGECOL + 5, 5); /* ? */
450 PUTRATE(Cnt.v_pgpgout, PAGEROW + 3, PAGECOL + 10, 5); /* ? */
451 PUTRATE(Cnt.v_pswpin, PAGEROW + 3, PAGECOL + 15, 5); /* - */
452 PUTRATE(Cnt.v_pswpout, PAGEROW + 3, PAGECOL + 20, 5); /* - */
453 PUTRATE(Cnt.v_swtch, GENSTATROW + 1, GENSTATCOL, 5);
454 PUTRATE(Cnt.v_trap, GENSTATROW + 1, GENSTATCOL + 5, 5);
455 PUTRATE(Cnt.v_syscall, GENSTATROW + 1, GENSTATCOL + 10, 5);
456 PUTRATE(Cnt.v_intr, GENSTATROW + 1, GENSTATCOL + 15, 5);
457 PUTRATE(Cnt.v_soft, GENSTATROW + 1, GENSTATCOL + 20, 5);
458 PUTRATE(Cnt.v_faults, GENSTATROW + 1, GENSTATCOL + 25, 5);
459 mvprintw(DISKROW, DISKCOL + 5, " ");
460 for (i = 0, c = 0; i < dk_ndrive && c < MAXDRIVES; i++)
461 if (dk_select[i]) {
462 mvprintw(DISKROW, DISKCOL + 5 + 5 * c,
463 " %3.3s", dr_name[i]);
464 dinfo(i, ++c);
465 }
466 putint(s.nchcount, NAMEIROW + 2, NAMEICOL, 9);
467 putint(nchtotal.ncs_goodhits, NAMEIROW + 2, NAMEICOL + 9, 9);
468 #define nz(x) ((x) ? (x) : 1)
469 putfloat(nchtotal.ncs_goodhits * 100.0 / nz(s.nchcount),
470 NAMEIROW + 2, NAMEICOL + 19, 4, 0, 1);
471 putint(nchtotal.ncs_pass2, NAMEIROW + 2, NAMEICOL + 23, 9);
472 putfloat(nchtotal.ncs_pass2 * 100.0 / nz(s.nchcount),
473 NAMEIROW + 2, NAMEICOL + 34, 4, 0, 1);
474 #undef nz
475 }
476
477 int
cmdkre(cmd,args)478 cmdkre(cmd, args)
479 char *cmd, *args;
480 {
481
482 if (prefix(cmd, "run")) {
483 copyinfo(&s2, &s1);
484 state = RUN;
485 return (1);
486 }
487 if (prefix(cmd, "boot")) {
488 state = BOOT;
489 copyinfo(&z, &s1);
490 return (1);
491 }
492 if (prefix(cmd, "time")) {
493 state = TIME;
494 return (1);
495 }
496 if (prefix(cmd, "zero")) {
497 if (state == RUN)
498 getinfo(&s1, RUN);
499 return (1);
500 }
501 return (dkcmd(cmd, args));
502 }
503
504 /* calculate number of users on the system */
505 static int
ucount()506 ucount()
507 {
508 register int nusers = 0;
509
510 if (ut < 0)
511 return (0);
512 while (read(ut, &utmp, sizeof(utmp)))
513 if (utmp.ut_name[0] != '\0')
514 nusers++;
515
516 lseek(ut, 0L, L_SET);
517 return (nusers);
518 }
519
520 static float
cputime(indx)521 cputime(indx)
522 int indx;
523 {
524 double t;
525 register int i;
526
527 t = 0;
528 for (i = 0; i < CPUSTATES; i++)
529 t += s.time[i];
530 if (t == 0.0)
531 t = 1.0;
532 return (s.time[indx] * 100.0 / t);
533 }
534
535 static void
putint(n,l,c,w)536 putint(n, l, c, w)
537 int n, l, c, w;
538 {
539 char b[128];
540
541 move(l, c);
542 if (n == 0) {
543 while (w-- > 0)
544 addch(' ');
545 return;
546 }
547 sprintf(b, "%*d", w, n);
548 if (strlen(b) > w) {
549 while (w-- > 0)
550 addch('*');
551 return;
552 }
553 addstr(b);
554 }
555
556 static void
putfloat(f,l,c,w,d,nz)557 putfloat(f, l, c, w, d, nz)
558 double f;
559 int l, c, w, d, nz;
560 {
561 char b[128];
562
563 move(l, c);
564 if (nz && f == 0.0) {
565 while (--w >= 0)
566 addch(' ');
567 return;
568 }
569 sprintf(b, "%*.*f", w, d, f);
570 if (strlen(b) > w) {
571 while (--w >= 0)
572 addch('*');
573 return;
574 }
575 addstr(b);
576 }
577
578 static void
getinfo(s,st)579 getinfo(s, st)
580 struct Info *s;
581 enum state st;
582 {
583 int mib[2], size;
584 extern int errno;
585
586 NREAD(X_CPTIME, s->time, sizeof s->time);
587 NREAD(X_CNT, &s->Cnt, sizeof s->Cnt);
588 NREAD(X_DK_BUSY, &s->dk_busy, LONG);
589 NREAD(X_DK_TIME, s->dk_time, dk_ndrive * LONG);
590 NREAD(X_DK_XFER, s->dk_xfer, dk_ndrive * LONG);
591 NREAD(X_DK_WDS, s->dk_wds, dk_ndrive * LONG);
592 NREAD(X_DK_SEEK, s->dk_seek, dk_ndrive * LONG);
593 NREAD(X_NCHSTATS, &s->nchstats, sizeof s->nchstats);
594 NREAD(X_INTRCNT, s->intrcnt, nintr * LONG);
595 size = sizeof(s->Total);
596 mib[0] = CTL_VM;
597 mib[1] = VM_METER;
598 if (sysctl(mib, 2, &s->Total, &size, NULL, 0) < 0) {
599 error("Can't get kernel info: %s\n", strerror(errno));
600 bzero(&s->Total, sizeof(s->Total));
601 }
602 }
603
604 static void
allocinfo(s)605 allocinfo(s)
606 struct Info *s;
607 {
608
609 s->intrcnt = (long *) malloc(nintr * sizeof(long));
610 if (s->intrcnt == NULL) {
611 fprintf(stderr, "systat: out of memory\n");
612 exit(2);
613 }
614 }
615
616 static void
copyinfo(from,to)617 copyinfo(from, to)
618 register struct Info *from, *to;
619 {
620 long *time, *wds, *seek, *xfer;
621 long *intrcnt;
622
623 /*
624 * time, wds, seek, and xfer are malloc'd so we have to
625 * save the pointers before the structure copy and then
626 * copy by hand.
627 */
628 time = to->dk_time; wds = to->dk_wds; seek = to->dk_seek;
629 xfer = to->dk_xfer; intrcnt = to->intrcnt;
630 *to = *from;
631 bcopy(from->dk_time, to->dk_time = time, dk_ndrive * sizeof (long));
632 bcopy(from->dk_wds, to->dk_wds = wds, dk_ndrive * sizeof (long));
633 bcopy(from->dk_seek, to->dk_seek = seek, dk_ndrive * sizeof (long));
634 bcopy(from->dk_xfer, to->dk_xfer = xfer, dk_ndrive * sizeof (long));
635 bcopy(from->intrcnt, to->intrcnt = intrcnt, nintr * sizeof (int));
636 }
637
638 static void
dinfo(dn,c)639 dinfo(dn, c)
640 int dn, c;
641 {
642 double words, atime, itime, xtime;
643
644 c = DISKCOL + c * 5;
645 atime = s.dk_time[dn];
646 atime /= hertz;
647 words = s.dk_wds[dn]*32.0; /* number of words transferred */
648 xtime = dk_mspw[dn]*words; /* transfer time */
649 itime = atime - xtime; /* time not transferring */
650 if (xtime < 0)
651 itime += xtime, xtime = 0;
652 if (itime < 0)
653 xtime += itime, itime = 0;
654 putint((int)((float)s.dk_seek[dn]/etime+0.5), DISKROW + 1, c, 5);
655 putint((int)((float)s.dk_xfer[dn]/etime+0.5), DISKROW + 2, c, 5);
656 putint((int)(words/etime/512.0 + 0.5), DISKROW + 3, c, 5);
657 if (s.dk_seek[dn])
658 putfloat(itime*1000.0/s.dk_seek[dn], DISKROW + 4, c, 5, 1, 1);
659 else
660 putint(0, DISKROW + 4, c, 5);
661 }
662