summaryrefslogtreecommitdiffstats
path: root/usr.bin/systat/vmstat.c
blob: 8f8f86800252281d87173c09485833e8ceb5034f (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
/*-
 * Copyright (c) 1983, 1989, 1992, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by the University of
 *	California, Berkeley and its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#include <sys/cdefs.h>

__FBSDID("$FreeBSD$");

#ifdef lint
static const char sccsid[] = "@(#)vmstat.c	8.2 (Berkeley) 1/12/94";
#endif

/*
 * Cursed vmstat -- from Robert Elz.
 */

#include <sys/param.h>
#include <sys/stat.h>
#include <sys/time.h>
#include <sys/proc.h>
#include <sys/uio.h>
#include <sys/namei.h>
#include <sys/sysctl.h>
#include <sys/dkstat.h>
#include <sys/vmmeter.h>

#include <vm/vm_param.h>

#include <ctype.h>
#include <err.h>
#include <errno.h>
#include <langinfo.h>
#include <nlist.h>
#include <paths.h>
#include <signal.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
#include <utmp.h>
#include <devstat.h>
#include "systat.h"
#include "extern.h"
#include "devs.h"

static struct Info {
	long	time[CPUSTATES];
	u_int v_swtch;		/* context switches */
	u_int v_trap;		/* calls to trap */
	u_int v_syscall;	/* calls to syscall() */
	u_int v_intr;		/* device interrupts */
	u_int v_soft;		/* software interrupts */
	/*
	 * Virtual memory activity.
	 */
	u_int v_vm_faults;	/* number of address memory faults */
	u_int v_cow_faults;	/* number of copy-on-writes */
	u_int v_zfod;		/* pages zero filled on demand */
	u_int v_ozfod;		/* optimized zero fill pages */
	u_int v_swapin;		/* swap pager pageins */
	u_int v_swapout;	/* swap pager pageouts */
	u_int v_swappgsin;	/* swap pager pages paged in */
	u_int v_swappgsout;	/* swap pager pages paged out */
	u_int v_vnodein;	/* vnode pager pageins */
	u_int v_vnodeout;	/* vnode pager pageouts */
	u_int v_vnodepgsin;	/* vnode_pager pages paged in */
	u_int v_vnodepgsout;	/* vnode pager pages paged out */
	u_int v_intrans;	/* intransit blocking page faults */
	u_int v_reactivated;	/* number of pages reactivated from free list */
	u_int v_pdwakeups;	/* number of times daemon has awaken from sleep */
	u_int v_pdpages;	/* number of pages analyzed by daemon */

	u_int v_dfree;		/* pages freed by daemon */
	u_int v_pfree;		/* pages freed by exiting processes */
	u_int v_tfree;		/* total pages freed */
	/*
	 * Distribution of page usages.
	 */
	u_int v_page_size;	/* page size in bytes */
	u_int v_free_count;	/* number of pages free */
	u_int v_wire_count;	/* number of pages wired down */
	u_int v_active_count;	/* number of pages active */
	u_int v_inactive_count;	/* number of pages inactive */
	u_int v_cache_count;	/* number of pages on buffer cache queue */
	struct	vmtotal Total;
	struct	nchstats nchstats;
	long	nchcount;
	long	*intrcnt;
	int	bufspace;
	int	desiredvnodes;
	long	numvnodes;
	long	freevnodes;
	int	numdirtybuffers;
} s, s1, s2, z;

struct statinfo cur, last, run;

#define	total s.Total
#define	nchtotal s.nchstats
#define	oldnchtotal s1.nchstats

static	enum state { BOOT, TIME, RUN } state = TIME;

static void allocinfo(struct Info *);
static void copyinfo(struct Info *, struct Info *);
static float cputime(int);
static void dinfo(int, int, struct statinfo *, struct statinfo *);
static void getinfo(struct Info *);
static void putint(int, int, int, int);
static void putfloat(double, int, int, int, int, int);
static void putlongdouble(long double, int, int, int, int, int);
static int ucount(void);

static	int ncpu;
static	int ut;
static	char buf[26];
static	time_t t;
static	double etime;
static	int nintr;
static	long *intrloc;
static	char **intrname;
static	int nextintsrow;
static  int extended_vm_stats;

struct	utmp utmp;


WINDOW *
openkre()
{

	ut = open(_PATH_UTMP, O_RDONLY);
	if (ut < 0)
		error("No utmp");
	return (stdscr);
}

void
closekre(w)
	WINDOW *w;
{

	(void) close(ut);
	if (w == NULL)
		return;
	wclear(w);
	wrefresh(w);
}

/*
 * These constants define where the major pieces are laid out
 */
#define STATROW		 0	/* uses 1 row and 68 cols */
#define STATCOL		 2
#define MEMROW		 2	/* uses 4 rows and 31 cols */
#define MEMCOL		 0
#define PAGEROW		 2	/* uses 4 rows and 26 cols */
#define PAGECOL		46
#define INTSROW		 6	/* uses all rows to bottom and 17 cols */
#define INTSCOL		61
#define PROCSROW	 7	/* uses 2 rows and 20 cols */
#define PROCSCOL	 0
#define GENSTATROW	 7	/* uses 2 rows and 30 cols */
#define GENSTATCOL	20
#define VMSTATROW	 6	/* uses 17 rows and 12 cols */
#define VMSTATCOL	48
#define GRAPHROW	10	/* uses 3 rows and 51 cols */
#define GRAPHCOL	 0
#define NAMEIROW	14	/* uses 3 rows and 38 cols */
#define NAMEICOL	 0
#define DISKROW		18	/* uses 5 rows and 50 cols (for 9 drives) */
#define DISKCOL		 0

#define	DRIVESPACE	 7	/* max # for space */

#define	MAXDRIVES	DRIVESPACE	 /* max # to display */

int
initkre()
{
	char *intrnamebuf, *cp;
	int i;
	size_t sz;

	if ((num_devices = devstat_getnumdevs(NULL)) < 0) {
		warnx("%s", devstat_errbuf);
		return(0);
	}

	cur.dinfo = (struct devinfo *)malloc(sizeof(struct devinfo));
	last.dinfo = (struct devinfo *)malloc(sizeof(struct devinfo));
	run.dinfo = (struct devinfo *)malloc(sizeof(struct devinfo));
	bzero(cur.dinfo, sizeof(struct devinfo));
	bzero(last.dinfo, sizeof(struct devinfo));
	bzero(run.dinfo, sizeof(struct devinfo));

	if (dsinit(MAXDRIVES, &cur, &last, &run) != 1)
		return(0);

	if (nintr == 0) {
		if (sysctlbyname("hw.intrcnt", NULL, &sz, NULL, 0) == -1) {
			error("sysctl(hw.intrcnt...) failed: %s",
			      strerror(errno));
			return (0);
		}
		nintr = sz / sizeof(u_long);
		intrloc = calloc(nintr, sizeof (long));
		intrname = calloc(nintr, sizeof (char *));
		intrnamebuf = sysctl_dynread("hw.intrnames", NULL);
		if (intrnamebuf == NULL || intrname == NULL || 
		    intrloc == NULL) {
			error("Out of memory");
			if (intrnamebuf)
				free(intrnamebuf);
			if (intrname)
				free(intrname);
			if (intrloc)
				free(intrloc);
			nintr = 0;
			return(0);
		}
		for (cp = intrnamebuf, i = 0; i < nintr; i++) {
			intrname[i] = cp;
			cp += strlen(cp) + 1;
		}
		nextintsrow = INTSROW + 2;
		allocinfo(&s);
		allocinfo(&s1);
		allocinfo(&s2);
		allocinfo(&z);
	}
	getinfo(&s2);
	copyinfo(&s2, &s1);
	return(1);
}

void
fetchkre()
{
	time_t now;
	struct tm *tp;
	static int d_first = -1;

	if (d_first < 0)
		d_first = (*nl_langinfo(D_MD_ORDER) == 'd');

	time(&now);
	tp = localtime(&now);
	(void) strftime(buf, sizeof(buf),
			d_first ? "%e %b %R" : "%b %e %R", tp);
	getinfo(&s);
}

void
labelkre()
{
	int i, j;

	clear();
	mvprintw(STATROW, STATCOL + 4, "users    Load");
	mvprintw(MEMROW, MEMCOL, "Mem:KB    REAL            VIRTUAL");
	mvprintw(MEMROW + 1, MEMCOL, "        Tot   Share      Tot    Share");
	mvprintw(MEMROW + 2, MEMCOL, "Act");
	mvprintw(MEMROW + 3, MEMCOL, "All");

	mvprintw(MEMROW + 1, MEMCOL + 41, "Free");

	mvprintw(PAGEROW, PAGECOL,     "        VN PAGER  SWAP PAGER ");
	mvprintw(PAGEROW + 1, PAGECOL, "        in  out     in  out ");
	mvprintw(PAGEROW + 2, PAGECOL, "count");
	mvprintw(PAGEROW + 3, PAGECOL, "pages");

	mvprintw(INTSROW, INTSCOL + 3, " Interrupts");
	mvprintw(INTSROW + 1, INTSCOL + 9, "total");

	mvprintw(VMSTATROW + 1, VMSTATCOL + 10, "cow");
	mvprintw(VMSTATROW + 2, VMSTATCOL + 10, "wire");
	mvprintw(VMSTATROW + 3, VMSTATCOL + 10, "act");
	mvprintw(VMSTATROW + 4, VMSTATCOL + 10, "inact");
	mvprintw(VMSTATROW + 5, VMSTATCOL + 10, "cache");
	mvprintw(VMSTATROW + 6, VMSTATCOL + 10, "free");
	mvprintw(VMSTATROW + 7, VMSTATCOL + 10, "daefr");
	mvprintw(VMSTATROW + 8, VMSTATCOL + 10, "prcfr");
	mvprintw(VMSTATROW + 9, VMSTATCOL + 10, "react");
	mvprintw(VMSTATROW + 10, VMSTATCOL + 10, "pdwake");
	mvprintw(VMSTATROW + 11, VMSTATCOL + 10, "pdpgs");
	mvprintw(VMSTATROW + 12, VMSTATCOL + 10, "intrn");
	mvprintw(VMSTATROW + 13, VMSTATCOL + 10, "buf");
	mvprintw(VMSTATROW + 14, VMSTATCOL + 10, "dirtybuf");

	mvprintw(VMSTATROW + 15, VMSTATCOL + 10, "desiredvnodes");
	mvprintw(VMSTATROW + 16, VMSTATCOL + 10, "numvnodes");
	mvprintw(VMSTATROW + 17, VMSTATCOL + 10, "freevnodes");

	mvprintw(GENSTATROW, GENSTATCOL, "  Csw  Trp  Sys  Int  Sof  Flt");

	mvprintw(GRAPHROW, GRAPHCOL,
		"  . %%Sys    . %%Intr   . %%User   . %%Nice   . %%Idle");
	mvprintw(PROCSROW, PROCSCOL, "Proc:r  p  d  s  w");
	mvprintw(GRAPHROW + 1, GRAPHCOL,
		"|    |    |    |    |    |    |    |    |    |    |");

	mvprintw(NAMEIROW, NAMEICOL, "Namei         Name-cache    Dir-cache");
	mvprintw(NAMEIROW + 1, NAMEICOL,
		"    Calls     hits    %%     hits    %%");
	mvprintw(DISKROW, DISKCOL, "Disks");
	mvprintw(DISKROW + 1, DISKCOL, "KB/t");
	mvprintw(DISKROW + 2, DISKCOL, "tps");
	mvprintw(DISKROW + 3, DISKCOL, "MB/s");
	mvprintw(DISKROW + 4, DISKCOL, "%% busy");
	/*
	 * For now, we don't support a fourth disk statistic.  So there's
	 * no point in providing a label for it.  If someone can think of a
	 * fourth useful disk statistic, there is room to add it.
	 */
	/* mvprintw(DISKROW + 4, DISKCOL, " msps"); */
	j = 0;
	for (i = 0; i < num_devices && j < MAXDRIVES; i++)
		if (dev_select[i].selected) {
			char tmpstr[80];
			sprintf(tmpstr, "%s%d", dev_select[i].device_name,
				dev_select[i].unit_number);
			mvprintw(DISKROW, DISKCOL + 5 + 6 * j,
				" %5.5s", tmpstr);
			j++;
		}

	if (j <= 4) {
		/*
		 * room for extended VM stats
		 */
		mvprintw(VMSTATROW + 11, VMSTATCOL - 6, "zfod");
		mvprintw(VMSTATROW + 12, VMSTATCOL - 6, "ofod");
		mvprintw(VMSTATROW + 13, VMSTATCOL - 6, "%%slo-z");
		mvprintw(VMSTATROW + 14, VMSTATCOL - 6, "tfree");
		extended_vm_stats = 1;
	} else {
		extended_vm_stats = 0;
		mvprintw(VMSTATROW + 0, VMSTATCOL + 10, "zfod");
	}

	for (i = 0; i < nintr; i++) {
		if (intrloc[i] == 0)
			continue;
		mvprintw(intrloc[i], INTSCOL + 9, "%-10.10s", intrname[i]);
	}
}

#define X(fld)	{t=s.fld[i]; s.fld[i]-=s1.fld[i]; if(state==TIME) s1.fld[i]=t;}
#define Q(fld)	{t=cur.fld[i]; cur.fld[i]-=last.fld[i]; if(state==TIME) last.fld[i]=t;}
#define Y(fld)	{t = s.fld; s.fld -= s1.fld; if(state == TIME) s1.fld = t;}
#define Z(fld)	{t = s.nchstats.fld; s.nchstats.fld -= s1.nchstats.fld; \
	if(state == TIME) s1.nchstats.fld = t;}
#define PUTRATE(fld, l, c, w) \
	Y(fld); \
	putint((int)((float)s.fld/etime + 0.5), l, c, w)
#define MAXFAIL 5

static	char cpuchar[CPUSTATES] = { '=' , '+', '>', '-', ' ' };
static	char cpuorder[CPUSTATES] = { CP_SYS, CP_INTR, CP_USER, CP_NICE,
				     CP_IDLE };

void
showkre()
{
	float f1, f2;
	int psiz, inttotal;
	int i, j, k, l, lc;
	static int failcnt = 0;
	char intrbuffer[10];

	etime = 0;
	for(i = 0; i < CPUSTATES; i++) {
		X(time);
		Q(cp_time);
		etime += s.time[i];
	}
	if (etime < 5.0) {	/* < 5 ticks - ignore this trash */
		if (failcnt++ >= MAXFAIL) {
			clear();
			mvprintw(2, 10, "The alternate system clock has died!");
			mvprintw(3, 10, "Reverting to ``pigs'' display.");
			move(CMDLINE, 0);
			refresh();
			failcnt = 0;
			sleep(5);
			command("pigs");
		}
		return;
	}
	failcnt = 0;
	etime /= hertz;
	etime /= ncpu;
	inttotal = 0;
	for (i = 0; i < nintr; i++) {
		if (s.intrcnt[i] == 0)
			continue;
		if (intrloc[i] == 0) {
			if (nextintsrow == LINES)
				continue;
			intrloc[i] = nextintsrow++;
			k = 0;
			for (j = 0; j < (int)sizeof(intrbuffer); j++) {
				if (strncmp(&intrname[i][j], "irq", 3) == 0)
					j += 3;
				intrbuffer[k++] = intrname[i][j];
			}
			intrbuffer[k] = '\0';
			mvprintw(intrloc[i], INTSCOL + 9, "%-10.10s",
				intrbuffer);
		}
		X(intrcnt);
		l = (int)((float)s.intrcnt[i]/etime + 0.5);
		inttotal += l;
		putint(l, intrloc[i], INTSCOL + 2, 6);
	}
	putint(inttotal, INTSROW + 1, INTSCOL + 2, 6);
	Z(ncs_goodhits); Z(ncs_badhits); Z(ncs_miss);
	Z(ncs_long); Z(ncs_pass2); Z(ncs_2passes); Z(ncs_neghits);
	s.nchcount = nchtotal.ncs_goodhits + nchtotal.ncs_badhits +
	    nchtotal.ncs_miss + nchtotal.ncs_long + nchtotal.ncs_neghits;
	if (state == TIME)
		s1.nchcount = s.nchcount;

	psiz = 0;
	f2 = 0.0;
	for (lc = 0; lc < CPUSTATES; lc++) {
		i = cpuorder[lc];
		f1 = cputime(i);
		f2 += f1;
		l = (int) ((f2 + 1.0) / 2.0) - psiz;
		if (f1 > 99.9)
			f1 = 99.9;	/* no room to display 100.0 */
		putfloat(f1, GRAPHROW, GRAPHCOL + 10 * lc, 4, 1, 0);
		move(GRAPHROW + 2, psiz);
		psiz += l;
		while (l-- > 0)
			addch(cpuchar[lc]);
	}

	putint(ucount(), STATROW, STATCOL, 3);
	putfloat(avenrun[0], STATROW, STATCOL + 17, 6, 2, 0);
	putfloat(avenrun[1], STATROW, STATCOL + 23, 6, 2, 0);
	putfloat(avenrun[2], STATROW, STATCOL + 29, 6, 2, 0);
	mvaddstr(STATROW, STATCOL + 53, buf);
#define pgtokb(pg)	((pg) * s.v_page_size / 1024)
	putint(pgtokb(total.t_arm), MEMROW + 2, MEMCOL + 3, 8);
	putint(pgtokb(total.t_armshr), MEMROW + 2, MEMCOL + 11, 8);
	putint(pgtokb(total.t_avm), MEMROW + 2, MEMCOL + 19, 9);
	putint(pgtokb(total.t_avmshr), MEMROW + 2, MEMCOL + 28, 9);
	putint(pgtokb(total.t_rm), MEMROW + 3, MEMCOL + 3, 8);
	putint(pgtokb(total.t_rmshr), MEMROW + 3, MEMCOL + 11, 8);
	putint(pgtokb(total.t_vm), MEMROW + 3, MEMCOL + 19, 9);
	putint(pgtokb(total.t_vmshr), MEMROW + 3, MEMCOL + 28, 9);
	putint(pgtokb(total.t_free), MEMROW + 2, MEMCOL + 37, 8);
	putint(total.t_rq - 1, PROCSROW + 1, PROCSCOL + 3, 3);
	putint(total.t_pw, PROCSROW + 1, PROCSCOL + 6, 3);
	putint(total.t_dw, PROCSROW + 1, PROCSCOL + 9, 3);
	putint(total.t_sl, PROCSROW + 1, PROCSCOL + 12, 3);
	putint(total.t_sw, PROCSROW + 1, PROCSCOL + 15, 3);
	if (extended_vm_stats == 0) {
		PUTRATE(v_zfod, VMSTATROW + 0, VMSTATCOL + 4, 5);
	}
	PUTRATE(v_cow_faults, VMSTATROW + 1, VMSTATCOL + 3, 6);
	putint(pgtokb(s.v_wire_count), VMSTATROW + 2, VMSTATCOL, 9);
	putint(pgtokb(s.v_active_count), VMSTATROW + 3, VMSTATCOL, 9);
	putint(pgtokb(s.v_inactive_count), VMSTATROW + 4, VMSTATCOL, 9);
	putint(pgtokb(s.v_cache_count), VMSTATROW + 5, VMSTATCOL, 9);
	putint(pgtokb(s.v_free_count), VMSTATROW + 6, VMSTATCOL, 9);
	PUTRATE(v_dfree, VMSTATROW + 7, VMSTATCOL, 9);
	PUTRATE(v_pfree, VMSTATROW + 8, VMSTATCOL, 9);
	PUTRATE(v_reactivated, VMSTATROW + 9, VMSTATCOL, 9);
	PUTRATE(v_pdwakeups, VMSTATROW + 10, VMSTATCOL, 9);
	PUTRATE(v_pdpages, VMSTATROW + 11, VMSTATCOL, 9);
	PUTRATE(v_intrans, VMSTATROW + 12, VMSTATCOL, 9);

	if (extended_vm_stats) {
	    PUTRATE(v_zfod, VMSTATROW + 11, VMSTATCOL - 16, 9);
	    PUTRATE(v_ozfod, VMSTATROW + 12, VMSTATCOL - 16, 9);
	    putint(
		((s.v_ozfod < s.v_zfod) ?
		    s.v_ozfod * 100 / s.v_zfod : 
		    0
		),
		VMSTATROW + 13, 
		VMSTATCOL - 16,
		9
	    );
	    PUTRATE(v_tfree, VMSTATROW + 14, VMSTATCOL - 16, 9);
	}

	putint(s.bufspace/1024, VMSTATROW + 13, VMSTATCOL, 9);
	putint(s.numdirtybuffers, VMSTATROW + 14, VMSTATCOL, 9);
	putint(s.desiredvnodes, VMSTATROW + 15, VMSTATCOL, 9);
	putint(s.numvnodes, VMSTATROW + 16, VMSTATCOL, 9);
	putint(s.freevnodes, VMSTATROW + 17, VMSTATCOL, 9);
	PUTRATE(v_vnodein, PAGEROW + 2, PAGECOL + 5, 5);
	PUTRATE(v_vnodeout, PAGEROW + 2, PAGECOL + 10, 5);
	PUTRATE(v_swapin, PAGEROW + 2, PAGECOL + 17, 5);
	PUTRATE(v_swapout, PAGEROW + 2, PAGECOL + 22, 5);
	PUTRATE(v_vnodepgsin, PAGEROW + 3, PAGECOL + 5, 5);
	PUTRATE(v_vnodepgsout, PAGEROW + 3, PAGECOL + 10, 5);
	PUTRATE(v_swappgsin, PAGEROW + 3, PAGECOL + 17, 5);
	PUTRATE(v_swappgsout, PAGEROW + 3, PAGECOL + 22, 5);
	PUTRATE(v_swtch, GENSTATROW + 1, GENSTATCOL, 5);
	PUTRATE(v_trap, GENSTATROW + 1, GENSTATCOL + 5, 5);
	PUTRATE(v_syscall, GENSTATROW + 1, GENSTATCOL + 10, 5);
	PUTRATE(v_intr, GENSTATROW + 1, GENSTATCOL + 15, 5);
	PUTRATE(v_soft, GENSTATROW + 1, GENSTATCOL + 20, 5);
	PUTRATE(v_vm_faults, GENSTATROW + 1, GENSTATCOL + 25, 5);
	mvprintw(DISKROW, DISKCOL + 5, "                              ");
	for (i = 0, lc = 0; i < num_devices && lc < MAXDRIVES; i++)
		if (dev_select[i].selected) {
			char tmpstr[80];
			sprintf(tmpstr, "%s%d", dev_select[i].device_name,
				dev_select[i].unit_number);
			mvprintw(DISKROW, DISKCOL + 5 + 6 * lc,
				" %5.5s", tmpstr);
			switch(state) {
			case TIME:
				dinfo(i, ++lc, &cur, &last);
				break;
			case RUN:
				dinfo(i, ++lc, &cur, &run);
				break;
			case BOOT:
				dinfo(i, ++lc, &cur, NULL);
				break;
			}
		}
	putint(s.nchcount, NAMEIROW + 2, NAMEICOL, 9);
	putint((nchtotal.ncs_goodhits + nchtotal.ncs_neghits),
	   NAMEIROW + 2, NAMEICOL + 9, 9);
#define nz(x)	((x) ? (x) : 1)
	putfloat((nchtotal.ncs_goodhits+nchtotal.ncs_neghits) *
	   100.0 / nz(s.nchcount),
	   NAMEIROW + 2, NAMEICOL + 19, 4, 0, 1);
	putint(nchtotal.ncs_pass2, NAMEIROW + 2, NAMEICOL + 23, 9);
	putfloat(nchtotal.ncs_pass2 * 100.0 / nz(s.nchcount),
	   NAMEIROW + 2, NAMEICOL + 33, 4, 0, 1);
#undef nz
}

int
cmdkre(cmd, args)
	const char *cmd, *args;
{
	int retval;

	if (prefix(cmd, "run")) {
		retval = 1;
		copyinfo(&s2, &s1);
		switch (devstat_getdevs(NULL, &run)) {
		case -1:
			errx(1, "%s", devstat_errbuf);
			break;
		case 1:
			num_devices = run.dinfo->numdevs;
			generation = run.dinfo->generation;
			retval = dscmd("refresh", NULL, MAXDRIVES, &cur);
			if (retval == 2)
				labelkre();
			break;
		default:
			break;
		}
		state = RUN;
		return (retval);
	}
	if (prefix(cmd, "boot")) {
		state = BOOT;
		copyinfo(&z, &s1);
		return (1);
	}
	if (prefix(cmd, "time")) {
		state = TIME;
		return (1);
	}
	if (prefix(cmd, "zero")) {
		retval = 1;
		if (state == RUN) {
			getinfo(&s1);
			switch (devstat_getdevs(NULL, &run)) {
			case -1:
				errx(1, "%s", devstat_errbuf);
				break;
			case 1:
				num_devices = run.dinfo->numdevs;
				generation = run.dinfo->generation;
				retval = dscmd("refresh",NULL, MAXDRIVES, &cur);
				if (retval == 2)
					labelkre();
				break;
			default:
				break;
			}
		}
		return (retval);
	}
	retval = dscmd(cmd, args, MAXDRIVES, &cur);

	if (retval == 2)
		labelkre();

	return(retval);
}

/* calculate number of users on the system */
static int
ucount()
{
	int nusers = 0;

	if (ut < 0)
		return (0);
	while (read(ut, &utmp, sizeof(utmp)))
		if (utmp.ut_name[0] != '\0')
			nusers++;

	lseek(ut, 0L, L_SET);
	return (nusers);
}

static float
cputime(indx)
	int indx;
{
	double lt;
	int i;

	lt = 0;
	for (i = 0; i < CPUSTATES; i++)
		lt += s.time[i];
	if (lt == 0.0)
		lt = 1.0;
	return (s.time[indx] * 100.0 / lt);
}

static void
putint(n, l, lc, w)
	int n, l, lc, w;
{
	char b[128];

	move(l, lc);
	if (n == 0) {
		while (w-- > 0)
			addch(' ');
		return;
	}
	snprintf(b, sizeof(b), "%*d", w, n);
	if ((int)strlen(b) > w) {
		while (w-- > 0)
			addch('*');
		return;
	}
	addstr(b);
}

static void
putfloat(f, l, lc, w, d, nz)
	double f;
	int l, lc, w, d, nz;
{
	char b[128];

	move(l, lc);
	if (nz && f == 0.0) {
		while (--w >= 0)
			addch(' ');
		return;
	}
	snprintf(b, sizeof(b), "%*.*f", w, d, f);
	if ((int)strlen(b) > w)
		snprintf(b, sizeof(b), "%*.0f", w, f);
	if ((int)strlen(b) > w) {
		while (--w >= 0)
			addch('*');
		return;
	}
	addstr(b);
}

static void
putlongdouble(f, l, lc, w, d, nz)
	long double f;
	int l, lc, w, d, nz;
{
	char b[128];

	move(l, lc);
	if (nz && f == 0.0) {
		while (--w >= 0)
			addch(' ');
		return;
	}
	sprintf(b, "%*.*Lf", w, d, f);
	if ((int)strlen(b) > w)
		sprintf(b, "%*.0Lf", w, f);
	if ((int)strlen(b) > w) {
		while (--w >= 0)
			addch('*');
		return;
	}
	addstr(b);
}

static void
getinfo(ls)
	struct Info *ls;
{
	struct devinfo *tmp_dinfo;
	size_t size;
	int mib[2];

	GETSYSCTL("kern.cp_time", ls->time);
	GETSYSCTL("kern.cp_time", cur.cp_time);
	GETSYSCTL("vm.stats.sys.v_swtch", ls->v_swtch);
	GETSYSCTL("vm.stats.sys.v_trap", ls->v_trap);
	GETSYSCTL("vm.stats.sys.v_syscall", ls->v_syscall);
	GETSYSCTL("vm.stats.sys.v_intr", ls->v_intr);
	GETSYSCTL("vm.stats.sys.v_soft", ls->v_soft);
	GETSYSCTL("vm.stats.vm.v_vm_faults", ls->v_vm_faults);
	GETSYSCTL("vm.stats.vm.v_cow_faults", ls->v_cow_faults);
	GETSYSCTL("vm.stats.vm.v_zfod", ls->v_zfod);
	GETSYSCTL("vm.stats.vm.v_ozfod", ls->v_ozfod);
	GETSYSCTL("vm.stats.vm.v_swapin", ls->v_swapin);
	GETSYSCTL("vm.stats.vm.v_swapout", ls->v_swapout);
	GETSYSCTL("vm.stats.vm.v_swappgsin", ls->v_swappgsin);
	GETSYSCTL("vm.stats.vm.v_swappgsout", ls->v_swappgsout);
	GETSYSCTL("vm.stats.vm.v_vnodein", ls->v_vnodein);
	GETSYSCTL("vm.stats.vm.v_vnodeout", ls->v_vnodeout);
	GETSYSCTL("vm.stats.vm.v_vnodepgsin", ls->v_vnodepgsin);
	GETSYSCTL("vm.stats.vm.v_vnodepgsout", ls->v_vnodepgsout);
	GETSYSCTL("vm.stats.vm.v_intrans", ls->v_intrans);
	GETSYSCTL("vm.stats.vm.v_reactivated", ls->v_reactivated);
	GETSYSCTL("vm.stats.vm.v_pdwakeups", ls->v_pdwakeups);
	GETSYSCTL("vm.stats.vm.v_pdpages", ls->v_pdpages);
	GETSYSCTL("vm.stats.vm.v_dfree", ls->v_dfree);
	GETSYSCTL("vm.stats.vm.v_pfree", ls->v_pfree);
	GETSYSCTL("vm.stats.vm.v_tfree", ls->v_tfree);
	GETSYSCTL("vm.stats.vm.v_page_size", ls->v_page_size);
	GETSYSCTL("vm.stats.vm.v_free_count", ls->v_free_count);
	GETSYSCTL("vm.stats.vm.v_wire_count", ls->v_wire_count);
	GETSYSCTL("vm.stats.vm.v_active_count", ls->v_active_count);
	GETSYSCTL("vm.stats.vm.v_inactive_count", ls->v_inactive_count);
	GETSYSCTL("vm.stats.vm.v_cache_count", ls->v_cache_count);
	GETSYSCTL("vfs.bufspace", ls->bufspace);
	GETSYSCTL("kern.maxvnodes", ls->desiredvnodes);
	GETSYSCTL("vfs.numvnodes", ls->numvnodes);
	GETSYSCTL("vfs.freevnodes", ls->freevnodes);
	GETSYSCTL("vfs.cache.nchstats", ls->nchstats);
	GETSYSCTL("vfs.numdirtybuffers", ls->numdirtybuffers);
	getsysctl("hw.intrcnt", ls->intrcnt, nintr * sizeof(u_long));

	size = sizeof(ls->Total);
	mib[0] = CTL_VM;
	mib[1] = VM_METER;
	if (sysctl(mib, 2, &ls->Total, &size, NULL, 0) < 0) {
		error("Can't get kernel info: %s\n", strerror(errno));
		bzero(&ls->Total, sizeof(ls->Total));
	}
	size = sizeof(ncpu);
	if (sysctlbyname("hw.ncpu", &ncpu, &size, NULL, 0) < 0 ||
	    size != sizeof(ncpu))
		ncpu = 1;

	tmp_dinfo = last.dinfo;
	last.dinfo = cur.dinfo;
	cur.dinfo = tmp_dinfo;

	last.busy_time = cur.busy_time;
	switch (devstat_getdevs(NULL, &cur)) {
	case -1:
		errx(1, "%s", devstat_errbuf);
		break;
	case 1:
		num_devices = cur.dinfo->numdevs;
		generation = cur.dinfo->generation;
		cmdkre("refresh", NULL);
		break;
	default:
		break;
	}
}

static void
allocinfo(ls)
	struct Info *ls;
{

	ls->intrcnt = (long *) calloc(nintr, sizeof(long));
	if (ls->intrcnt == NULL)
		errx(2, "out of memory");
}

static void
copyinfo(from, to)
	struct Info *from, *to;
{
	long *intrcnt;

	/*
	 * time, wds, seek, and xfer are malloc'd so we have to
	 * save the pointers before the structure copy and then
	 * copy by hand.
	 */
	intrcnt = to->intrcnt;
	*to = *from;

	bcopy(from->intrcnt, to->intrcnt = intrcnt, nintr * sizeof (int));
}

static void
dinfo(dn, lc, now, then)
	int dn, lc;
	struct statinfo *now, *then;
{
	long double transfers_per_second;
	long double kb_per_transfer, mb_per_second;
	long double elapsed_time, device_busy;
	int di;

	di = dev_select[dn].position;

	elapsed_time = devstat_compute_etime(now->busy_time,
	    then ? then->busy_time : now->dinfo->devices[di].dev_creation_time);

	device_busy =  devstat_compute_etime(now->dinfo->devices[di].busy_time,
	    then ? then->dinfo->devices[di].busy_time :
	    now->dinfo->devices[di].dev_creation_time);

	if (devstat_compute_statistics(&now->dinfo->devices[di], then ?
	    &then->dinfo->devices[di] : NULL, elapsed_time,
	    DSM_KB_PER_TRANSFER, &kb_per_transfer, DSM_TRANSFERS_PER_SECOND,
	    &transfers_per_second, DSM_MB_PER_SECOND, &mb_per_second,
	    DSM_NONE) != 0)
		errx(1, "%s", devstat_errbuf);

	if ((device_busy == 0) && (transfers_per_second > 5))
		/* the device has been 100% busy, fake it because
		 * as long as the device is 100% busy the busy_time
		 * field in the devstat struct is not updated */
		device_busy = elapsed_time;
	if (device_busy > elapsed_time)
		/* this normally happens after one or more periods
		 * where the device has been 100% busy, correct it */
		device_busy = elapsed_time;

	lc = DISKCOL + lc * 6;
	putlongdouble(kb_per_transfer, DISKROW + 1, lc, 5, 2, 0);
	putlongdouble(transfers_per_second, DISKROW + 2, lc, 5, 0, 0);
	putlongdouble(mb_per_second, DISKROW + 3, lc, 5, 2, 0);
	putlongdouble(device_busy * 100 / elapsed_time, DISKROW + 4, lc, 5, 0, 0);
}
OpenPOWER on IntegriCloud