Annotation of src/usr.bin/systat/vmstat.c, Revision 1.1.1.1
1.1 deraadt 1: /* $NetBSD: vmstat.c,v 1.4 1995/04/29 05:54:55 cgd Exp $ */
2:
3: /*-
4: * Copyright (c) 1983, 1989, 1992, 1993
5: * The Regents of the University of California. All rights reserved.
6: *
7: * Redistribution and use in source and binary forms, with or without
8: * modification, are permitted provided that the following conditions
9: * are met:
10: * 1. Redistributions of source code must retain the above copyright
11: * notice, this list of conditions and the following disclaimer.
12: * 2. Redistributions in binary form must reproduce the above copyright
13: * notice, this list of conditions and the following disclaimer in the
14: * documentation and/or other materials provided with the distribution.
15: * 3. All advertising materials mentioning features or use of this software
16: * must display the following acknowledgement:
17: * This product includes software developed by the University of
18: * California, Berkeley and its contributors.
19: * 4. Neither the name of the University nor the names of its contributors
20: * may be used to endorse or promote products derived from this software
21: * without specific prior written permission.
22: *
23: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33: * SUCH DAMAGE.
34: */
35:
36: #ifndef lint
37: #if 0
38: static char sccsid[] = "@(#)vmstat.c 8.2 (Berkeley) 1/12/94";
39: #endif
40: static char rcsid[] = "$NetBSD: vmstat.c,v 1.4 1995/04/29 05:54:55 cgd Exp $";
41: #endif /* not lint */
42:
43: /*
44: * Cursed vmstat -- from Robert Elz.
45: */
46:
47: #include <sys/param.h>
48: #include <sys/dkstat.h>
49: #include <sys/buf.h>
50: #include <sys/stat.h>
51: #include <sys/time.h>
52: #include <sys/user.h>
53: #include <sys/proc.h>
54: #include <sys/namei.h>
55: #include <sys/sysctl.h>
56: #include <vm/vm.h>
57:
58: #include <ctype.h>
59: #include <err.h>
60: #include <nlist.h>
61: #include <paths.h>
62: #include <signal.h>
63: #include <stdlib.h>
64: #include <string.h>
65: #include <utmp.h>
66: #include <unistd.h>
67:
68: #include "systat.h"
69: #include "extern.h"
70:
71: static struct Info {
72: long time[CPUSTATES];
73: struct vmmeter Cnt;
74: struct vmtotal Total;
75: long *dk_time;
76: long *dk_wds;
77: long *dk_seek;
78: long *dk_xfer;
79: int dk_busy;
80: struct nchstats nchstats;
81: long nchcount;
82: long *intrcnt;
83: } s, s1, s2, z;
84:
85: #define cnt s.Cnt
86: #define oldcnt s1.Cnt
87: #define total s.Total
88: #define nchtotal s.nchstats
89: #define oldnchtotal s1.nchstats
90:
91: static enum state { BOOT, TIME, RUN } state = TIME;
92:
93: static void allocinfo __P((struct Info *));
94: static void copyinfo __P((struct Info *, struct Info *));
95: static float cputime __P((int));
96: static void dinfo __P((int, int));
97: static void getinfo __P((struct Info *, enum state));
98: static void putint __P((int, int, int, int));
99: static void putfloat __P((double, int, int, int, int, int));
100: static int ucount __P((void));
101:
102: static int ut;
103: static char buf[26];
104: static time_t t;
105: static double etime;
106: static float hertz;
107: static int nintr;
108: static long *intrloc;
109: static char **intrname;
110: static int nextintsrow;
111:
112: struct utmp utmp;
113:
114:
115: WINDOW *
116: openkre()
117: {
118:
119: ut = open(_PATH_UTMP, O_RDONLY);
120: if (ut < 0)
121: error("No utmp");
122: return (stdscr);
123: }
124:
125: void
126: closekre(w)
127: WINDOW *w;
128: {
129:
130: (void) close(ut);
131: if (w == NULL)
132: return;
133: wclear(w);
134: wrefresh(w);
135: }
136:
137:
138: static struct nlist namelist[] = {
139: #define X_CPTIME 0
140: { "_cp_time" },
141: #define X_CNT 1
142: { "_cnt" },
143: #define X_TOTAL 2
144: { "_total" },
145: #define X_DK_BUSY 3
146: { "_dk_busy" },
147: #define X_DK_TIME 4
148: { "_dk_time" },
149: #define X_DK_XFER 5
150: { "_dk_xfer" },
151: #define X_DK_WDS 6
152: { "_dk_wds" },
153: #define X_DK_SEEK 7
154: { "_dk_seek" },
155: #define X_NCHSTATS 8
156: { "_nchstats" },
157: #define X_INTRNAMES 9
158: { "_intrnames" },
159: #define X_EINTRNAMES 10
160: { "_eintrnames" },
161: #define X_INTRCNT 11
162: { "_intrcnt" },
163: #define X_EINTRCNT 12
164: { "_eintrcnt" },
165: { "" },
166: };
167:
168: /*
169: * These constants define where the major pieces are laid out
170: */
171: #define STATROW 0 /* uses 1 row and 68 cols */
172: #define STATCOL 2
173: #define MEMROW 2 /* uses 4 rows and 31 cols */
174: #define MEMCOL 0
175: #define PAGEROW 2 /* uses 4 rows and 26 cols */
176: #define PAGECOL 36
177: #define INTSROW 2 /* uses all rows to bottom and 17 cols */
178: #define INTSCOL 63
179: #define PROCSROW 7 /* uses 2 rows and 20 cols */
180: #define PROCSCOL 0
181: #define GENSTATROW 7 /* uses 2 rows and 30 cols */
182: #define GENSTATCOL 20
183: #define VMSTATROW 7 /* uses 17 rows and 12 cols */
184: #define VMSTATCOL 48
185: #define GRAPHROW 10 /* uses 3 rows and 51 cols */
186: #define GRAPHCOL 0
187: #define NAMEIROW 14 /* uses 3 rows and 38 cols */
188: #define NAMEICOL 0
189: #define DISKROW 18 /* uses 5 rows and 50 cols (for 9 drives) */
190: #define DISKCOL 0
191:
192: #define DRIVESPACE 9 /* max # for space */
193:
194: #if DK_NDRIVE > DRIVESPACE
195: #define MAXDRIVES DRIVESPACE /* max # to display */
196: #else
197: #define MAXDRIVES DK_NDRIVE /* max # to display */
198: #endif
199:
200: int
201: initkre()
202: {
203: char *intrnamebuf, *cp;
204: int i;
205: static int once = 0;
206:
207: if (namelist[0].n_type == 0) {
208: if (kvm_nlist(kd, namelist)) {
209: nlisterr(namelist);
210: return(0);
211: }
212: if (namelist[0].n_type == 0) {
213: error("No namelist");
214: return(0);
215: }
216: }
217: hertz = stathz ? stathz : hz;
218: if (! dkinit())
219: return(0);
220: if (dk_ndrive && !once) {
221: #define allocate(e, t) \
222: s./**/e = (t *)calloc(dk_ndrive, sizeof (t)); \
223: s1./**/e = (t *)calloc(dk_ndrive, sizeof (t)); \
224: s2./**/e = (t *)calloc(dk_ndrive, sizeof (t)); \
225: z./**/e = (t *)calloc(dk_ndrive, sizeof (t));
226: allocate(dk_time, long);
227: allocate(dk_wds, long);
228: allocate(dk_seek, long);
229: allocate(dk_xfer, long);
230: once = 1;
231: #undef allocate
232: }
233: if (nintr == 0) {
234: nintr = (namelist[X_EINTRCNT].n_value -
235: namelist[X_INTRCNT].n_value) / sizeof (long);
236: intrloc = calloc(nintr, sizeof (long));
237: intrname = calloc(nintr, sizeof (long));
238: intrnamebuf = malloc(namelist[X_EINTRNAMES].n_value -
239: namelist[X_INTRNAMES].n_value);
240: if (intrnamebuf == 0 || intrname == 0 || intrloc == 0) {
241: error("Out of memory\n");
242: if (intrnamebuf)
243: free(intrnamebuf);
244: if (intrname)
245: free(intrname);
246: if (intrloc)
247: free(intrloc);
248: nintr = 0;
249: return(0);
250: }
251: NREAD(X_INTRNAMES, intrnamebuf, NVAL(X_EINTRNAMES) -
252: NVAL(X_INTRNAMES));
253: for (cp = intrnamebuf, i = 0; i < nintr; i++) {
254: intrname[i] = cp;
255: cp += strlen(cp) + 1;
256: }
257: nextintsrow = INTSROW + 2;
258: allocinfo(&s);
259: allocinfo(&s1);
260: allocinfo(&s2);
261: allocinfo(&z);
262: }
263: getinfo(&s2, RUN);
264: copyinfo(&s2, &s1);
265: return(1);
266: }
267:
268: void
269: fetchkre()
270: {
271: time_t now;
272:
273: time(&now);
274: strcpy(buf, ctime(&now));
275: buf[16] = '\0';
276: getinfo(&s, state);
277: }
278:
279: void
280: labelkre()
281: {
282: register int i, j;
283:
284: clear();
285: mvprintw(STATROW, STATCOL + 4, "users Load");
286: mvprintw(MEMROW, MEMCOL, "Mem:KB REAL VIRTUAL");
287: mvprintw(MEMROW + 1, MEMCOL, " Tot Share Tot Share");
288: mvprintw(MEMROW + 2, MEMCOL, "Act");
289: mvprintw(MEMROW + 3, MEMCOL, "All");
290:
291: mvprintw(MEMROW + 1, MEMCOL + 31, "Free");
292:
293: mvprintw(PAGEROW, PAGECOL, " PAGING SWAPPING ");
294: mvprintw(PAGEROW + 1, PAGECOL, " in out in out ");
295: mvprintw(PAGEROW + 2, PAGECOL, "count");
296: mvprintw(PAGEROW + 3, PAGECOL, "pages");
297:
298: mvprintw(INTSROW, INTSCOL + 3, " Interrupts");
299: mvprintw(INTSROW + 1, INTSCOL + 9, "total");
300:
301: mvprintw(VMSTATROW + 0, VMSTATCOL + 10, "cow");
302: mvprintw(VMSTATROW + 1, VMSTATCOL + 10, "objlk");
303: mvprintw(VMSTATROW + 2, VMSTATCOL + 10, "objht");
304: mvprintw(VMSTATROW + 3, VMSTATCOL + 10, "zfod");
305: mvprintw(VMSTATROW + 4, VMSTATCOL + 10, "nzfod");
306: mvprintw(VMSTATROW + 5, VMSTATCOL + 10, "%%zfod");
307: mvprintw(VMSTATROW + 6, VMSTATCOL + 10, "kern");
308: mvprintw(VMSTATROW + 7, VMSTATCOL + 10, "wire");
309: mvprintw(VMSTATROW + 8, VMSTATCOL + 10, "act");
310: mvprintw(VMSTATROW + 9, VMSTATCOL + 10, "inact");
311: mvprintw(VMSTATROW + 10, VMSTATCOL + 10, "free");
312: mvprintw(VMSTATROW + 11, VMSTATCOL + 10, "daefr");
313: mvprintw(VMSTATROW + 12, VMSTATCOL + 10, "prcfr");
314: mvprintw(VMSTATROW + 13, VMSTATCOL + 10, "react");
315: mvprintw(VMSTATROW + 14, VMSTATCOL + 10, "scan");
316: mvprintw(VMSTATROW + 15, VMSTATCOL + 10, "hdrev");
317: if (LINES - 1 > VMSTATROW + 16)
318: mvprintw(VMSTATROW + 16, VMSTATCOL + 10, "intrn");
319:
320: mvprintw(GENSTATROW, GENSTATCOL, " Csw Trp Sys Int Sof Flt");
321:
322: mvprintw(GRAPHROW, GRAPHCOL,
323: " . %% Sys . %% User . %% Nice . %% Idle");
324: mvprintw(PROCSROW, PROCSCOL, "Proc:r p d s w");
325: mvprintw(GRAPHROW + 1, GRAPHCOL,
326: "| | | | | | | | | | |");
327:
328: mvprintw(NAMEIROW, NAMEICOL, "Namei Sys-cache Proc-cache");
329: mvprintw(NAMEIROW + 1, NAMEICOL,
330: " Calls hits %% hits %%");
331: mvprintw(DISKROW, DISKCOL, "Discs");
332: mvprintw(DISKROW + 1, DISKCOL, "seeks");
333: mvprintw(DISKROW + 2, DISKCOL, "xfers");
334: mvprintw(DISKROW + 3, DISKCOL, " blks");
335: mvprintw(DISKROW + 4, DISKCOL, " msps");
336: j = 0;
337: for (i = 0; i < dk_ndrive && j < MAXDRIVES; i++)
338: if (dk_select[i]) {
339: mvprintw(DISKROW, DISKCOL + 5 + 5 * j,
340: " %3.3s", dr_name[j]);
341: j++;
342: }
343: for (i = 0; i < nintr; i++) {
344: if (intrloc[i] == 0)
345: continue;
346: mvprintw(intrloc[i], INTSCOL + 9, "%-8.8s", intrname[i]);
347: }
348: }
349:
350: #define X(fld) {t=s.fld[i]; s.fld[i]-=s1.fld[i]; if(state==TIME) s1.fld[i]=t;}
351: #define Y(fld) {t = s.fld; s.fld -= s1.fld; if(state == TIME) s1.fld = t;}
352: #define Z(fld) {t = s.nchstats.fld; s.nchstats.fld -= s1.nchstats.fld; \
353: if(state == TIME) s1.nchstats.fld = t;}
354: #define PUTRATE(fld, l, c, w) \
355: Y(fld); \
356: putint((int)((float)s.fld/etime + 0.5), l, c, w)
357: #define MAXFAIL 5
358:
359: static char cpuchar[CPUSTATES] = { '=' , '>', '-', ' ' };
360: static char cpuorder[CPUSTATES] = { CP_SYS, CP_USER, CP_NICE, CP_IDLE };
361:
362: void
363: showkre()
364: {
365: float f1, f2;
366: int psiz, inttotal;
367: int i, l, c;
368: static int failcnt = 0;
369:
370: for (i = 0; i < dk_ndrive; i++) {
371: X(dk_xfer); X(dk_seek); X(dk_wds); X(dk_time);
372: }
373: etime = 0;
374: for(i = 0; i < CPUSTATES; i++) {
375: X(time);
376: etime += s.time[i];
377: }
378: if (etime < 5.0) { /* < 5 ticks - ignore this trash */
379: if (failcnt++ >= MAXFAIL) {
380: clear();
381: mvprintw(2, 10, "The alternate system clock has died!");
382: mvprintw(3, 10, "Reverting to ``pigs'' display.");
383: move(CMDLINE, 0);
384: refresh();
385: failcnt = 0;
386: sleep(5);
387: command("pigs");
388: }
389: return;
390: }
391: failcnt = 0;
392: etime /= hertz;
393: inttotal = 0;
394: for (i = 0; i < nintr; i++) {
395: if (s.intrcnt[i] == 0)
396: continue;
397: if (intrloc[i] == 0) {
398: if (nextintsrow == LINES)
399: continue;
400: intrloc[i] = nextintsrow++;
401: mvprintw(intrloc[i], INTSCOL + 9, "%-8.8s",
402: intrname[i]);
403: }
404: X(intrcnt);
405: l = (int)((float)s.intrcnt[i]/etime + 0.5);
406: inttotal += l;
407: putint(l, intrloc[i], INTSCOL, 8);
408: }
409: putint(inttotal, INTSROW + 1, INTSCOL, 8);
410: Z(ncs_goodhits); Z(ncs_badhits); Z(ncs_miss);
411: Z(ncs_long); Z(ncs_pass2); Z(ncs_2passes);
412: s.nchcount = nchtotal.ncs_goodhits + nchtotal.ncs_badhits +
413: nchtotal.ncs_miss + nchtotal.ncs_long;
414: if (state == TIME)
415: s1.nchcount = s.nchcount;
416:
417: psiz = 0;
418: f2 = 0.0;
419:
420: /*
421: * Last CPU state not calculated yet.
422: */
423: for (c = 0; c < CPUSTATES - 1; c++) {
424: i = cpuorder[c];
425: f1 = cputime(i);
426: f2 += f1;
427: l = (int) ((f2 + 1.0) / 2.0) - psiz;
428: if (c == 0)
429: putfloat(f1, GRAPHROW, GRAPHCOL + 1, 5, 1, 0);
430: else
431: putfloat(f1, GRAPHROW, GRAPHCOL + 12 * c,
432: 5, 1, 0);
433: move(GRAPHROW + 2, psiz);
434: psiz += l;
435: while (l-- > 0)
436: addch(cpuchar[c]);
437: }
438:
439: putint(ucount(), STATROW, STATCOL, 3);
440: putfloat(avenrun[0], STATROW, STATCOL + 17, 6, 2, 0);
441: putfloat(avenrun[1], STATROW, STATCOL + 23, 6, 2, 0);
442: putfloat(avenrun[2], STATROW, STATCOL + 29, 6, 2, 0);
443: mvaddstr(STATROW, STATCOL + 53, buf);
444: #define pgtokb(pg) ((pg) * cnt.v_page_size / 1024)
445: putint(pgtokb(total.t_arm), MEMROW + 2, MEMCOL + 3, 6);
446: putint(pgtokb(total.t_armshr), MEMROW + 2, MEMCOL + 9, 6);
447: putint(pgtokb(total.t_avm), MEMROW + 2, MEMCOL + 15, 7);
448: putint(pgtokb(total.t_avmshr), MEMROW + 2, MEMCOL + 22, 7);
449: putint(pgtokb(total.t_rm), MEMROW + 3, MEMCOL + 3, 6);
450: putint(pgtokb(total.t_rmshr), MEMROW + 3, MEMCOL + 9, 6);
451: putint(pgtokb(total.t_vm), MEMROW + 3, MEMCOL + 15, 7);
452: putint(pgtokb(total.t_vmshr), MEMROW + 3, MEMCOL + 22, 7);
453: putint(pgtokb(total.t_free), MEMROW + 2, MEMCOL + 29, 6);
454: putint(total.t_rq - 1, PROCSROW + 1, PROCSCOL + 3, 3);
455: putint(total.t_pw, PROCSROW + 1, PROCSCOL + 6, 3);
456: putint(total.t_dw, PROCSROW + 1, PROCSCOL + 9, 3);
457: putint(total.t_sl, PROCSROW + 1, PROCSCOL + 12, 3);
458: putint(total.t_sw, PROCSROW + 1, PROCSCOL + 15, 3);
459: PUTRATE(Cnt.v_cow_faults, VMSTATROW + 0, VMSTATCOL + 3, 6);
460: PUTRATE(Cnt.v_lookups, VMSTATROW + 1, VMSTATCOL + 3, 6);
461: PUTRATE(Cnt.v_hits, VMSTATROW + 2, VMSTATCOL + 3, 6);
462: PUTRATE(Cnt.v_zfod, VMSTATROW + 3, VMSTATCOL + 4, 5);
463: PUTRATE(Cnt.v_nzfod, VMSTATROW + 4, VMSTATCOL + 3, 6);
464: putfloat(cnt.v_nzfod == 0 ? 0.0 : (100.0 * cnt.v_zfod / cnt.v_nzfod),
465: VMSTATROW + 5, VMSTATCOL + 2, 7, 2, 1);
466: putint(pgtokb(cnt.v_kernel_pages), VMSTATROW + 6, VMSTATCOL, 9);
467: putint(pgtokb(cnt.v_wire_count), VMSTATROW + 7, VMSTATCOL, 9);
468: putint(pgtokb(cnt.v_active_count), VMSTATROW + 8, VMSTATCOL, 9);
469: putint(pgtokb(cnt.v_inactive_count), VMSTATROW + 9, VMSTATCOL, 9);
470: putint(pgtokb(cnt.v_free_count), VMSTATROW + 10, VMSTATCOL, 9);
471: PUTRATE(Cnt.v_dfree, VMSTATROW + 11, VMSTATCOL, 9);
472: PUTRATE(Cnt.v_pfree, VMSTATROW + 12, VMSTATCOL, 9);
473: PUTRATE(Cnt.v_reactivated, VMSTATROW + 13, VMSTATCOL, 9);
474: PUTRATE(Cnt.v_scan, VMSTATROW + 14, VMSTATCOL, 9);
475: PUTRATE(Cnt.v_rev, VMSTATROW + 15, VMSTATCOL, 9);
476: if (LINES - 1 > VMSTATROW + 16)
477: PUTRATE(Cnt.v_intrans, VMSTATROW + 16, VMSTATCOL, 9);
478: PUTRATE(Cnt.v_pageins, PAGEROW + 2, PAGECOL + 5, 5);
479: PUTRATE(Cnt.v_pageouts, PAGEROW + 2, PAGECOL + 10, 5);
480: PUTRATE(Cnt.v_swpin, PAGEROW + 2, PAGECOL + 15, 5); /* - */
481: PUTRATE(Cnt.v_swpout, PAGEROW + 2, PAGECOL + 20, 5); /* - */
482: PUTRATE(Cnt.v_pgpgin, PAGEROW + 3, PAGECOL + 5, 5); /* ? */
483: PUTRATE(Cnt.v_pgpgout, PAGEROW + 3, PAGECOL + 10, 5); /* ? */
484: PUTRATE(Cnt.v_pswpin, PAGEROW + 3, PAGECOL + 15, 5); /* - */
485: PUTRATE(Cnt.v_pswpout, PAGEROW + 3, PAGECOL + 20, 5); /* - */
486: PUTRATE(Cnt.v_swtch, GENSTATROW + 1, GENSTATCOL, 5);
487: PUTRATE(Cnt.v_trap, GENSTATROW + 1, GENSTATCOL + 5, 5);
488: PUTRATE(Cnt.v_syscall, GENSTATROW + 1, GENSTATCOL + 10, 5);
489: PUTRATE(Cnt.v_intr, GENSTATROW + 1, GENSTATCOL + 15, 5);
490: PUTRATE(Cnt.v_soft, GENSTATROW + 1, GENSTATCOL + 20, 5);
491: PUTRATE(Cnt.v_faults, GENSTATROW + 1, GENSTATCOL + 25, 5);
492: mvprintw(DISKROW, DISKCOL + 5, " ");
493: for (i = 0, c = 0; i < dk_ndrive && c < MAXDRIVES; i++)
494: if (dk_select[i]) {
495: mvprintw(DISKROW, DISKCOL + 5 + 5 * c,
496: " %3.3s", dr_name[i]);
497: dinfo(i, ++c);
498: }
499: putint(s.nchcount, NAMEIROW + 2, NAMEICOL, 9);
500: putint(nchtotal.ncs_goodhits, NAMEIROW + 2, NAMEICOL + 9, 9);
501: #define nz(x) ((x) ? (x) : 1)
502: putfloat(nchtotal.ncs_goodhits * 100.0 / nz(s.nchcount),
503: NAMEIROW + 2, NAMEICOL + 19, 4, 0, 1);
504: putint(nchtotal.ncs_pass2, NAMEIROW + 2, NAMEICOL + 23, 9);
505: putfloat(nchtotal.ncs_pass2 * 100.0 / nz(s.nchcount),
506: NAMEIROW + 2, NAMEICOL + 34, 4, 0, 1);
507: #undef nz
508: }
509:
510: int
511: cmdkre(cmd, args)
512: char *cmd, *args;
513: {
514:
515: if (prefix(cmd, "run")) {
516: copyinfo(&s2, &s1);
517: state = RUN;
518: return (1);
519: }
520: if (prefix(cmd, "boot")) {
521: state = BOOT;
522: copyinfo(&z, &s1);
523: return (1);
524: }
525: if (prefix(cmd, "time")) {
526: state = TIME;
527: return (1);
528: }
529: if (prefix(cmd, "zero")) {
530: if (state == RUN)
531: getinfo(&s1, RUN);
532: return (1);
533: }
534: return (dkcmd(cmd, args));
535: }
536:
537: /* calculate number of users on the system */
538: static int
539: ucount()
540: {
541: register int nusers = 0;
542:
543: if (ut < 0)
544: return (0);
545: while (read(ut, &utmp, sizeof(utmp)))
546: if (utmp.ut_name[0] != '\0')
547: nusers++;
548:
549: lseek(ut, 0L, L_SET);
550: return (nusers);
551: }
552:
553: static float
554: cputime(indx)
555: int indx;
556: {
557: double t;
558: register int i;
559:
560: t = 0;
561: for (i = 0; i < CPUSTATES; i++)
562: t += s.time[i];
563: if (t == 0.0)
564: t = 1.0;
565: return (s.time[indx] * 100.0 / t);
566: }
567:
568: static void
569: putint(n, l, c, w)
570: int n, l, c, w;
571: {
572: char b[128];
573:
574: move(l, c);
575: if (n == 0) {
576: while (w-- > 0)
577: addch(' ');
578: return;
579: }
580: sprintf(b, "%*d", w, n);
581: if (strlen(b) > w) {
582: while (w-- > 0)
583: addch('*');
584: return;
585: }
586: addstr(b);
587: }
588:
589: static void
590: putfloat(f, l, c, w, d, nz)
591: double f;
592: int l, c, w, d, nz;
593: {
594: char b[128];
595:
596: move(l, c);
597: if (nz && f == 0.0) {
598: while (--w >= 0)
599: addch(' ');
600: return;
601: }
602: sprintf(b, "%*.*f", w, d, f);
603: if (strlen(b) > w) {
604: while (--w >= 0)
605: addch('*');
606: return;
607: }
608: addstr(b);
609: }
610:
611: static void
612: getinfo(s, st)
613: struct Info *s;
614: enum state st;
615: {
616: int mib[2];
617: size_t size;
618: extern int errno;
619:
620: NREAD(X_CPTIME, s->time, sizeof s->time);
621: NREAD(X_CNT, &s->Cnt, sizeof s->Cnt);
622: NREAD(X_DK_BUSY, &s->dk_busy, LONG);
623: NREAD(X_DK_TIME, s->dk_time, dk_ndrive * LONG);
624: NREAD(X_DK_XFER, s->dk_xfer, dk_ndrive * LONG);
625: NREAD(X_DK_WDS, s->dk_wds, dk_ndrive * LONG);
626: NREAD(X_DK_SEEK, s->dk_seek, dk_ndrive * LONG);
627: NREAD(X_NCHSTATS, &s->nchstats, sizeof s->nchstats);
628: NREAD(X_INTRCNT, s->intrcnt, nintr * LONG);
629: size = sizeof(s->Total);
630: mib[0] = CTL_VM;
631: mib[1] = VM_METER;
632: if (sysctl(mib, 2, &s->Total, &size, NULL, 0) < 0) {
633: error("Can't get kernel info: %s\n", strerror(errno));
634: bzero(&s->Total, sizeof(s->Total));
635: }
636: }
637:
638: static void
639: allocinfo(s)
640: struct Info *s;
641: {
642:
643: s->intrcnt = (long *) malloc(nintr * sizeof(long));
644: if (s->intrcnt == NULL)
645: errx(2, "out of memory");
646: }
647:
648: static void
649: copyinfo(from, to)
650: register struct Info *from, *to;
651: {
652: long *time, *wds, *seek, *xfer;
653: long *intrcnt;
654:
655: /*
656: * time, wds, seek, and xfer are malloc'd so we have to
657: * save the pointers before the structure copy and then
658: * copy by hand.
659: */
660: time = to->dk_time; wds = to->dk_wds; seek = to->dk_seek;
661: xfer = to->dk_xfer; intrcnt = to->intrcnt;
662: *to = *from;
663: bcopy(from->dk_time, to->dk_time = time, dk_ndrive * sizeof (long));
664: bcopy(from->dk_wds, to->dk_wds = wds, dk_ndrive * sizeof (long));
665: bcopy(from->dk_seek, to->dk_seek = seek, dk_ndrive * sizeof (long));
666: bcopy(from->dk_xfer, to->dk_xfer = xfer, dk_ndrive * sizeof (long));
667: bcopy(from->intrcnt, to->intrcnt = intrcnt, nintr * sizeof (int));
668: }
669:
670: static void
671: dinfo(dn, c)
672: int dn, c;
673: {
674: double words, atime, itime, xtime;
675:
676: c = DISKCOL + c * 5;
677: atime = s.dk_time[dn];
678: atime /= hertz;
679: words = s.dk_wds[dn]*32.0; /* number of words transferred */
680: xtime = dk_mspw[dn]*words; /* transfer time */
681: itime = atime - xtime; /* time not transferring */
682: if (xtime < 0)
683: itime += xtime, xtime = 0;
684: if (itime < 0)
685: xtime += itime, itime = 0;
686: putint((int)((float)s.dk_seek[dn]/etime+0.5), DISKROW + 1, c, 5);
687: putint((int)((float)s.dk_xfer[dn]/etime+0.5), DISKROW + 2, c, 5);
688: putint((int)(words/etime/512.0 + 0.5), DISKROW + 3, c, 5);
689: if (s.dk_seek[dn])
690: putfloat(itime*1000.0/s.dk_seek[dn], DISKROW + 4, c, 5, 1, 1);
691: else
692: putint(0, DISKROW + 4, c, 5);
693: }
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