[unix-history] / usr / src / usr.bin / vmstat / vmstat.c

#ifndef lint
static	char *sccsid = "@(#)vmstat.c	4.13 (Berkeley) %G%";
#endif

#include <stdio.h>
#include <sys/param.h>
#include <sys/vm.h>
#include <sys/dk.h>
#include <nlist.h>
#include <sys/buf.h>
#include <sys/dir.h>
#include <sys/nami.h>
#ifdef vax
#include <vaxuba/ubavar.h>
#include <vaxmba/mbavar.h>
#endif
#ifdef sun
#include <sundev/mbvar.h>
#endif

struct nlist nl[] = {
#define	X_CPTIME	0
	{ "_cp_time" },
#define	X_RATE		1
	{ "_rate" },
#define X_TOTAL		2
	{ "_total" },
#define	X_DEFICIT	3
	{ "_deficit" },
#define	X_FORKSTAT	4
	{ "_forkstat" },
#define X_SUM		5
	{ "_sum" },
#define	X_FIRSTFREE	6
	{ "_firstfree" },
#define	X_MAXFREE	7
	{ "_maxfree" },
#define	X_BOOTTIME	8
	{ "_boottime" },
#define	X_DKXFER	9
	{ "_dk_xfer" },
#define X_REC		10
	{ "_rectime" },
#define X_PGIN		11
	{ "_pgintime" },
#define X_HZ		12
	{ "_hz" },
#define	X_PHZ		13
	{ "_phz" },
#define X_NCHSTATS	14
	{ "_nchstats" },
#ifdef vax
#define X_MBDINIT	15
	{ "_mbdinit" },
#define X_UBDINIT	16
	{ "_ubdinit" },
#endif
#ifdef sun
#define X_MBDINIT	15
	{ "_mbdinit" },
#endif
	{ "" },
};

char dr_name[DK_NDRIVE][10];
char dr_unit[DK_NDRIVE];
double	stat1();
int	firstfree, maxfree;
int	hz;
int	phz;
int	HZ;
#ifdef sun
#define	INTS(x)	(x)
#endif
#ifdef vax
#define	INTS(x)	((x) - (hz + phz))
#endif

struct
{
	int	busy;
	long	time[CPUSTATES];
	long	xfer[DK_NDRIVE];
	struct	vmmeter Rate;
	struct	vmtotal	Total;
	struct	vmmeter Sum;
	struct	forkstat Forkstat;
	unsigned rectime;
	unsigned pgintime;
} s, s1, z;
#define	rate		s.Rate
#define	total		s.Total
#define	sum		s.Sum
#define	forkstat	s.Forkstat

struct	vmmeter osum;
int	zero;
int	deficit;
double	etime;
int 	mf;

main(argc, argv)
	int argc;
	char **argv;
{
	time_t now;
	int lines;
	extern char *ctime();
	register i,j;
	int iter, nintv;
	time_t boottime;
	double f1, f2;
	long t;
	extern char _sobuf[];

	setbuf(stdout, _sobuf);
	nlist("/vmunix", nl);
	if(nl[0].n_type == 0) {
		printf("no /vmunix namelist\n");
		exit(1);
	}
	mf = open("/dev/kmem", 0);
	if(mf < 0) {
		printf("cannot open /dev/kmem\n");
		exit(1);
	}
	iter = 0;
	argc--, argv++;
	while (argc>0 && argv[0][0]=='-') {
		char *cp = *argv++;
		argc--;
		while (*++cp) switch (*cp) {

		case 't':
			dotimes();
			exit(0);

		case 'z':
			close(mf);
			mf = open("/dev/kmem", 2);
			lseek(mf, (long)nl[X_SUM].n_value, 0);
			write(mf, &z.Sum, sizeof z.Sum);
			exit(0);

		case 'f':
			doforkst();
			exit(0);
		
		case 's':
			dosum();
			exit(0);

		default:
			fprintf(stderr, "usage: vmstat [ -fs ] [ interval ] [ count]\n");
			exit(1);
		}
	}
	if(argc > 1)
		iter = atoi(argv[1]);
	lseek(mf, (long)nl[X_FIRSTFREE].n_value, 0);
	read(mf, &firstfree, sizeof firstfree);
	lseek(mf, (long)nl[X_MAXFREE].n_value, 0);
	read(mf, &maxfree, sizeof maxfree);
	lseek(mf, (long)nl[X_BOOTTIME].n_value, 0);
	read(mf, &boottime, sizeof boottime);
	lseek(mf, (long)nl[X_HZ].n_value, 0);
	read(mf, &hz, sizeof hz);
	lseek(mf, (long)nl[X_PHZ].n_value, 0);
	read(mf, &phz, sizeof phz);
	HZ = phz ? phz : hz;
	for (i = 0; i < DK_NDRIVE; i++) {
		strcpy(dr_name[i], "xx");
		dr_unit[i] = i;
	}
	read_names();
	time(&now);
	nintv = now - boottime;
	if (nintv <= 0 || nintv > 60*60*24*365*10) {
		printf("Time makes no sense... namelist must be wrong.\n");
		exit(1);
	}
reprint:
	lines = 20;
	/* s1 = z; */
printf("\
 procs     memory                       page      disk  faults          cpu\n\
 r b w   avm  fre  re at  pi  po  fr  de  sr %c%d %c%d %c%d %c%d  in  sy  cs us sy id\n",
 dr_name[0][0], dr_unit[0], dr_name[1][0], dr_unit[1], dr_name[2][0], dr_unit[2], dr_name[3][0], dr_unit[3]);
loop:
	lseek(mf, (long)nl[X_CPTIME].n_value, 0);
 	read(mf, s.time, sizeof s.time);
	lseek(mf, (long)nl[X_DKXFER].n_value, 0);
	read(mf, s.xfer, sizeof s.xfer);
	if (nintv != 1) {
		lseek(mf, (long)nl[X_SUM].n_value, 0);
		read(mf, &rate, sizeof rate);
	} else {
		lseek(mf, (long)nl[X_RATE].n_value, 0);
		read(mf, &rate, sizeof rate);
	}
	lseek(mf, (long)nl[X_TOTAL].n_value, 0);
	read(mf, &total, sizeof total);
	osum = sum;
	lseek(mf, (long)nl[X_SUM].n_value, 0);
	read(mf, &sum, sizeof sum);
	lseek(mf, (long)nl[X_DEFICIT].n_value, 0);
	read(mf, &deficit, sizeof deficit);
	etime = 0;
	for (i=0; i < DK_NDRIVE; i++) {
		t = s.xfer[i];
		s.xfer[i] -= s1.xfer[i];
		s1.xfer[i] = t;
	}
	for (i=0; i < CPUSTATES; i++) {
		t = s.time[i];
		s.time[i] -= s1.time[i];
		s1.time[i] = t;
		etime += s.time[i];
	}
	if(etime == 0.)
		etime = 1.;
	printf("%2d%2d%2d", total.t_rq, total.t_dw+total.t_pw, total.t_sw);
#define pgtok(a) ((a)*NBPG/1024)
	printf("%6d%5d", pgtok(total.t_avm), pgtok(total.t_free));
	printf("%4d%3d", (rate.v_pgrec - (rate.v_xsfrec+rate.v_xifrec))/nintv,
	    (rate.v_xsfrec+rate.v_xifrec)/nintv);
	printf("%4d", pgtok(rate.v_pgpgin)/nintv);
	printf("%4d%4d%4d%4d", pgtok(rate.v_pgpgout)/nintv,
	    pgtok(rate.v_dfree)/nintv, pgtok(deficit), rate.v_scan/nintv);
	etime /= (float) HZ;
	for(i=0; i<4; i++)
		stats(i);
	printf("%4d%4d%4d", INTS(rate.v_intr/nintv), rate.v_syscall/nintv,
	    rate.v_swtch/nintv);
	for(i=0; i<CPUSTATES; i++) {
		float f = stat1(i);
		if (i == 0) {		/* US+NI */
			i++;
			f += stat1(i);
		}
		printf("%3.0f", f);
	}
	printf("\n");
	fflush(stdout);
contin:
	nintv = 1;
	--iter;
	if(iter)
	if(argc > 0) {
		sleep(atoi(argv[0]));
		if (--lines <= 0)
			goto reprint;
		goto loop;
	}
}

dotimes()
{

	lseek(mf, (long)nl[X_REC].n_value, 0);
	read(mf, &s.rectime, sizeof s.rectime);
	lseek(mf, (long)nl[X_PGIN].n_value, 0);
	read(mf, &s.pgintime, sizeof s.pgintime);
	lseek(mf, (long)nl[X_SUM].n_value, 0);
	read(mf, &sum, sizeof sum);
	printf("%d reclaims, %d total time (usec)\n", sum.v_pgrec, s.rectime);
	printf("average: %d usec / reclaim\n", s.rectime/sum.v_pgrec);
	printf("\n");
	printf("%d page ins, %d total time (msec)\n",sum.v_pgin, s.pgintime/10);
	printf("average: %8.1f msec / page in\n", s.pgintime/(sum.v_pgin*10.0));
}

dosum()
{
	struct nchstats statbuf;
	long nchtotal;

	lseek(mf, (long)nl[X_SUM].n_value, 0);
	read(mf, &sum, sizeof sum);
	printf("%9d swap ins\n", sum.v_swpin);
	printf("%9d swap outs\n", sum.v_swpout);
	printf("%9d pages swapped in\n", sum.v_pswpin / CLSIZE);
	printf("%9d pages swapped out\n", sum.v_pswpout / CLSIZE);
	printf("%9d total address trans. faults taken\n", sum.v_faults);
	printf("%9d page ins\n", sum.v_pgin);
	printf("%9d page outs\n", sum.v_pgout);
	printf("%9d pages paged in\n", sum.v_pgpgin);
	printf("%9d pages paged out\n", sum.v_pgpgout);
	printf("%9d sequential process pages freed\n", sum.v_seqfree);
	printf("%9d total reclaims (%d%% fast)\n", sum.v_pgrec,
	    (sum.v_fastpgrec * 100) / (sum.v_pgrec == 0 ? 1 : sum.v_pgrec));
	printf("%9d reclaims from free list\n", sum.v_pgfrec);
	printf("%9d intransit blocking page faults\n", sum.v_intrans);
	printf("%9d zero fill pages created\n", sum.v_nzfod / CLSIZE);
	printf("%9d zero fill page faults\n", sum.v_zfod / CLSIZE);
	printf("%9d executable fill pages created\n", sum.v_nexfod / CLSIZE);
	printf("%9d executable fill page faults\n", sum.v_exfod / CLSIZE);
	printf("%9d swap text pages found in free list\n", sum.v_xsfrec);
	printf("%9d inode text pages found in free list\n", sum.v_xifrec);
	printf("%9d file fill pages created\n", sum.v_nvrfod / CLSIZE);
	printf("%9d file fill page faults\n", sum.v_vrfod / CLSIZE);
	printf("%9d pages examined by the clock daemon\n", sum.v_scan);
	printf("%9d revolutions of the clock hand\n", sum.v_rev);
	printf("%9d pages freed by the clock daemon\n", sum.v_dfree / CLSIZE);
	printf("%9d cpu context switches\n", sum.v_swtch);
	printf("%9d device interrupts\n", sum.v_intr);
	printf("%9d pseduo-dma dz interrupts\n", sum.v_pdma);
	printf("%9d traps\n", sum.v_trap);
	printf("%9d system calls\n", sum.v_syscall);
	lseek(mf, (long)nl[X_NCHSTATS].n_value, 0);
	read(mf, &statbuf, sizeof statbuf);
	nchtotal = statbuf.ncs_goodhits + statbuf.ncs_badhits +
		statbuf.ncs_miss + statbuf.ncs_long;
	printf("%9d total name lookups", nchtotal);
	printf(" (cache hits %d%% system %d%% per-process)\n",
		statbuf.ncs_goodhits * 100 / nchtotal,
		statbuf.ncs_pass2 * 100 / nchtotal);
}

doforkst()
{

	lseek(mf, (long)nl[X_FORKSTAT].n_value, 0);
	read(mf, &forkstat, sizeof forkstat);
	printf("%d forks, %d pages, average=%.2f\n",
		forkstat.cntfork, forkstat.sizfork,
		(float) forkstat.sizfork / forkstat.cntfork);
	printf("%d vforks, %d pages, average=%.2f\n",
		forkstat.cntvfork, forkstat.sizvfork,
		(float)forkstat.sizvfork / forkstat.cntvfork);
}

stats(dn)
{

	if (dn >= DK_NDRIVE) {
		printf("  0");
		return;
	}
	printf("%3.0f", s.xfer[dn]/etime);
}

double
stat1(row)
{
	double t;
	register i;

	t = 0;
	for(i=0; i<CPUSTATES; i++)
		t += s.time[i];
	if(t == 0.)
		t = 1.;
	return(s.time[row]*100./t);
}

pct(top, bot)
{

	if (bot == 0)
		return (0);
	return ((top * 100) / bot);
}

#define steal(where, var) lseek(mf, where, 0); read(mf, &var, sizeof var);
/*
 * Read the drive names out of kmem.
 */
#ifdef vax
read_names()
{
	struct mba_device mdev;
	register struct mba_device *mp;
	struct mba_driver mdrv;
	short two_char;
	char *cp = (char *) &two_char;
	struct uba_device udev, *up;
	struct uba_driver udrv;

	mp = (struct mba_device *) nl[X_MBDINIT].n_value;
	up = (struct uba_device *) nl[X_UBDINIT].n_value;
	if (up == 0) {
		fprintf(stderr, "vmstat: Disk init info not in namelist\n");
		exit(1);
	}
	if (mp) for (;;) {
		steal(mp++, mdev);
		if (mdev.mi_driver == 0)
			break;
		if (mdev.mi_dk < 0 || mdev.mi_alive == 0)
			continue;
		steal(mdev.mi_driver, mdrv);
		steal(mdrv.md_dname, two_char);
		sprintf(dr_name[mdev.mi_dk], "%c%c", cp[0], cp[1]);
		dr_unit[mdev.mi_dk] = mdev.mi_unit;
	}
	for (;;) {
		steal(up++, udev);
		if (udev.ui_driver == 0)
			break;
		if (udev.ui_dk < 0 || udev.ui_alive == 0)
			continue;
		steal(udev.ui_driver, udrv);
		steal(udrv.ud_dname, two_char);
		sprintf(dr_name[udev.ui_dk], "%c%c", cp[0], cp[1]);
		dr_unit[udev.ui_dk] = udev.ui_unit;
	}
}
#endif

#ifdef sun
read_names()
{
	struct mb_device mdev;
	register struct mb_device *mp;
	struct mb_driver mdrv;
	short two_char;
	char *cp = (char *) &two_char;

	mp = (struct mb_device *) nl[X_MBDINIT].n_value;
	if (mp == 0) {
		fprintf(stderr, "iostat: Disk init info not in namelist\n");
		exit(1);
	}
	for (;;) {
		steal(mp++, mdev);
		if (mdev.md_driver == 0)
			break;
		if (mdev.md_dk < 0 || mdev.md_alive == 0)
			continue;
		steal(mdev.md_driver, mdrv);
		steal(mdrv.mdr_dname, two_char);
		sprintf(dr_name[mdev.md_dk], "%c%c%d", cp[0], cp[1]);
		dr_unit[mdev.md_dk] = mdev.md_unit;
	}
}
#endif
Commit	Line	Data
338c4a5d	1	#ifndef lint
dfdfb4c8	2	static char *sccsid = "@(#)vmstat.c 4.13 (Berkeley) %G%";
338c4a5d SL	3	#endif
338c4a5d SL	4
7f02df2f BJ	5	#include <stdio.h>
	6	#include <sys/param.h>
	7	#include <sys/vm.h>
	8	#include <sys/dk.h>
	9	#include <nlist.h>
61d7d2b3	10	#include <sys/buf.h>
dfdfb4c8 KM	11	#include <sys/dir.h>
dfdfb4c8 KM	12	#include <sys/nami.h>
338c4a5d	13	#ifdef vax
a43be079 SL	14	#include <vaxuba/ubavar.h>
a43be079 SL	15	#include <vaxmba/mbavar.h>
338c4a5d SL	16	#endif
	17	#ifdef sun
	18	#include <sundev/mbvar.h>
	19	#endif
7f02df2f BJ	20
7f02df2f BJ	21	struct nlist nl[] = {
682f1dcb BJ	22	#define X_CPTIME 0
	23	{ "_cp_time" },
	24	#define X_RATE 1
7f02df2f	25	{ "_rate" },
682f1dcb	26	#define X_TOTAL 2
7f02df2f	27	{ "_total" },
682f1dcb	28	#define X_DEFICIT 3
7f02df2f	29	{ "_deficit" },
682f1dcb	30	#define X_FORKSTAT 4
7f02df2f	31	{ "_forkstat" },
682f1dcb	32	#define X_SUM 5
7f02df2f	33	{ "_sum" },
682f1dcb	34	#define X_FIRSTFREE 6
7f02df2f	35	{ "_firstfree" },
682f1dcb	36	#define X_MAXFREE 7
7f02df2f	37	{ "_maxfree" },
a43be079 SL	38	#define X_BOOTTIME 8
a43be079 SL	39	{ "_boottime" },
682f1dcb BJ	40	#define X_DKXFER 9
682f1dcb BJ	41	{ "_dk_xfer" },
338c4a5d	42	#define X_REC 10
7f02df2f	43	{ "_rectime" },
338c4a5d	44	#define X_PGIN 11
7f02df2f	45	{ "_pgintime" },
338c4a5d	46	#define X_HZ 12
61d7d2b3	47	{ "_hz" },
b3a37270 SL	48	#define X_PHZ 13
b3a37270 SL	49	{ "_phz" },
dfdfb4c8 KM	50	#define X_NCHSTATS 14
dfdfb4c8 KM	51	{ "_nchstats" },
338c4a5d	52	#ifdef vax
dfdfb4c8	53	#define X_MBDINIT 15
338c4a5d	54	{ "_mbdinit" },
dfdfb4c8	55	#define X_UBDINIT 16
338c4a5d SL	56	{ "_ubdinit" },
	57	#endif
	58	#ifdef sun
dfdfb4c8	59	#define X_MBDINIT 15
338c4a5d SL	60	{ "_mbdinit" },
	61	#endif
	62	{ "" },
7f02df2f BJ	63	};
7f02df2f BJ	64
61d7d2b3 MT	65	char dr_name[DK_NDRIVE][10];
61d7d2b3 MT	66	char dr_unit[DK_NDRIVE];
7f02df2f BJ	67	double stat1();
7f02df2f BJ	68	int firstfree, maxfree;
61d7d2b3	69	int hz;
b3a37270 SL	70	int phz;
	71	int HZ;
	72	#ifdef sun
	73	#define INTS(x) (x)
	74	#endif
	75	#ifdef vax
	76	#define INTS(x) ((x) - (hz + phz))
	77	#endif
	78
7f02df2f BJ	79	struct
	80	{
	81	int busy;
682f1dcb BJ	82	long time[CPUSTATES];
682f1dcb BJ	83	long xfer[DK_NDRIVE];
7f02df2f BJ	84	struct vmmeter Rate;
	85	struct vmtotal Total;
	86	struct vmmeter Sum;
	87	struct forkstat Forkstat;
7f02df2f BJ	88	unsigned rectime;
7f02df2f BJ	89	unsigned pgintime;
7f02df2f BJ	90	} s, s1, z;
	91	#define rate s.Rate
	92	#define total s.Total
	93	#define sum s.Sum
	94	#define forkstat s.Forkstat
	95
338c4a5d	96	struct vmmeter osum;
7f02df2f BJ	97	int zero;
	98	int deficit;
	99	double etime;
	100	int mf;
	101
	102	main(argc, argv)
338c4a5d SL	103	int argc;
338c4a5d SL	104	char **argv;
7f02df2f BJ	105	{
	106	time_t now;
	107	int lines;
	108	extern char *ctime();
	109	register i,j;
	110	int iter, nintv;
a43be079	111	time_t boottime;
7f02df2f BJ	112	double f1, f2;
	113	long t;
	114	extern char _sobuf[];
	115
	116	setbuf(stdout, _sobuf);
	117	nlist("/vmunix", nl);
	118	if(nl[0].n_type == 0) {
	119	printf("no /vmunix namelist\n");
	120	exit(1);
	121	}
	122	mf = open("/dev/kmem", 0);
	123	if(mf < 0) {
	124	printf("cannot open /dev/kmem\n");
	125	exit(1);
	126	}
	127	iter = 0;
	128	argc--, argv++;
	129	while (argc>0 && argv[0][0]=='-') {
	130	char cp = argv++;
	131	argc--;
	132	while (++cp) switch (cp) {
	133
7f02df2f BJ	134	case 't':
	135	dotimes();
	136	exit(0);
338c4a5d	137
7f02df2f BJ	138	case 'z':
	139	close(mf);
	140	mf = open("/dev/kmem", 2);
	141	lseek(mf, (long)nl[X_SUM].n_value, 0);
	142	write(mf, &z.Sum, sizeof z.Sum);
	143	exit(0);
	144
	145	case 'f':
	146	doforkst();
	147	exit(0);
	148
	149	case 's':
	150	dosum();
	151	exit(0);
	152
7f02df2f BJ	153	default:
	154	fprintf(stderr, "usage: vmstat [ -fs ] [ interval ] [ count]\n");
	155	exit(1);
	156	}
	157	}
	158	if(argc > 1)
	159	iter = atoi(argv[1]);
	160	lseek(mf, (long)nl[X_FIRSTFREE].n_value, 0);
	161	read(mf, &firstfree, sizeof firstfree);
	162	lseek(mf, (long)nl[X_MAXFREE].n_value, 0);
	163	read(mf, &maxfree, sizeof maxfree);
a43be079 SL	164	lseek(mf, (long)nl[X_BOOTTIME].n_value, 0);
a43be079 SL	165	read(mf, &boottime, sizeof boottime);
61d7d2b3 MT	166	lseek(mf, (long)nl[X_HZ].n_value, 0);
61d7d2b3 MT	167	read(mf, &hz, sizeof hz);
b3a37270 SL	168	lseek(mf, (long)nl[X_PHZ].n_value, 0);
	169	read(mf, &phz, sizeof phz);
	170	HZ = phz ? phz : hz;
513dfff1	171	for (i = 0; i < DK_NDRIVE; i++) {
4a072e2d	172	strcpy(dr_name[i], "xx");
61d7d2b3 MT	173	dr_unit[i] = i;
	174	}
	175	read_names();
7f02df2f	176	time(&now);
a43be079	177	nintv = now - boottime;
7f02df2f BJ	178	if (nintv <= 0 \|\| nintv > 60602436510) {
	179	printf("Time makes no sense... namelist must be wrong.\n");
	180	exit(1);
	181	}
	182	reprint:
	183	lines = 20;
	184	/* s1 = z; */
7f02df2f	185	printf("\
513dfff1	186	procs memory page disk faults cpu\n\
b3a37270	187	r b w avm fre re at pi po fr de sr %c%d %c%d %c%d %c%d in sy cs us sy id\n",
338c4a5d	188	dr_name[0][0], dr_unit[0], dr_name[1][0], dr_unit[1], dr_name[2][0], dr_unit[2], dr_name[3][0], dr_unit[3]);
7f02df2f	189	loop:
682f1dcb BJ	190	lseek(mf, (long)nl[X_CPTIME].n_value, 0);
	191	read(mf, s.time, sizeof s.time);
	192	lseek(mf, (long)nl[X_DKXFER].n_value, 0);
	193	read(mf, s.xfer, sizeof s.xfer);
7f02df2f BJ	194	if (nintv != 1) {
	195	lseek(mf, (long)nl[X_SUM].n_value, 0);
	196	read(mf, &rate, sizeof rate);
	197	} else {
	198	lseek(mf, (long)nl[X_RATE].n_value, 0);
	199	read(mf, &rate, sizeof rate);
	200	}
	201	lseek(mf, (long)nl[X_TOTAL].n_value, 0);
	202	read(mf, &total, sizeof total);
338c4a5d SL	203	osum = sum;
	204	lseek(mf, (long)nl[X_SUM].n_value, 0);
	205	read(mf, &sum, sizeof sum);
7f02df2f BJ	206	lseek(mf, (long)nl[X_DEFICIT].n_value, 0);
7f02df2f BJ	207	read(mf, &deficit, sizeof deficit);
682f1dcb	208	etime = 0;
7f02df2f	209	for (i=0; i < DK_NDRIVE; i++) {
682f1dcb BJ	210	t = s.xfer[i];
	211	s.xfer[i] -= s1.xfer[i];
	212	s1.xfer[i] = t;
7f02df2f BJ	213	}
7f02df2f BJ	214	for (i=0; i < CPUSTATES; i++) {
682f1dcb BJ	215	t = s.time[i];
	216	s.time[i] -= s1.time[i];
	217	s1.time[i] = t;
	218	etime += s.time[i];
7f02df2f	219	}
7f02df2f BJ	220	if(etime == 0.)
7f02df2f BJ	221	etime = 1.;
61d7d2b3	222	printf("%2d%2d%2d", total.t_rq, total.t_dw+total.t_pw, total.t_sw);
338c4a5d SL	223	#define pgtok(a) ((a)*NBPG/1024)
338c4a5d SL	224	printf("%6d%5d", pgtok(total.t_avm), pgtok(total.t_free));
b3a37270 SL	225	printf("%4d%3d", (rate.v_pgrec - (rate.v_xsfrec+rate.v_xifrec))/nintv,
b3a37270 SL	226	(rate.v_xsfrec+rate.v_xifrec)/nintv);
338c4a5d SL	227	printf("%4d", pgtok(rate.v_pgpgin)/nintv);
	228	printf("%4d%4d%4d%4d", pgtok(rate.v_pgpgout)/nintv,
	229	pgtok(rate.v_dfree)/nintv, pgtok(deficit), rate.v_scan/nintv);
b3a37270	230	etime /= (float) HZ;
7f02df2f BJ	231	for(i=0; i<4; i++)
7f02df2f BJ	232	stats(i);
b3a37270 SL	233	printf("%4d%4d%4d", INTS(rate.v_intr/nintv), rate.v_syscall/nintv,
b3a37270 SL	234	rate.v_swtch/nintv);
7f02df2f BJ	235	for(i=0; i<CPUSTATES; i++) {
	236	float f = stat1(i);
	237	if (i == 0) { /* US+NI */
	238	i++;
	239	f += stat1(i);
	240	}
	241	printf("%3.0f", f);
	242	}
	243	printf("\n");
	244	fflush(stdout);
	245	contin:
	246	nintv = 1;
	247	--iter;
	248	if(iter)
	249	if(argc > 0) {
	250	sleep(atoi(argv[0]));
	251	if (--lines <= 0)
	252	goto reprint;
	253	goto loop;
	254	}
	255	}
	256
7f02df2f BJ	257	dotimes()
	258	{
	259
	260	lseek(mf, (long)nl[X_REC].n_value, 0);
	261	read(mf, &s.rectime, sizeof s.rectime);
	262	lseek(mf, (long)nl[X_PGIN].n_value, 0);
	263	read(mf, &s.pgintime, sizeof s.pgintime);
	264	lseek(mf, (long)nl[X_SUM].n_value, 0);
	265	read(mf, &sum, sizeof sum);
	266	printf("%d reclaims, %d total time (usec)\n", sum.v_pgrec, s.rectime);
	267	printf("average: %d usec / reclaim\n", s.rectime/sum.v_pgrec);
	268	printf("\n");
	269	printf("%d page ins, %d total time (msec)\n",sum.v_pgin, s.pgintime/10);
	270	printf("average: %8.1f msec / page in\n", s.pgintime/(sum.v_pgin*10.0));
	271	}
7f02df2f BJ	272
	273	dosum()
	274	{
dfdfb4c8 KM	275	struct nchstats statbuf;
dfdfb4c8 KM	276	long nchtotal;
7f02df2f BJ	277
	278	lseek(mf, (long)nl[X_SUM].n_value, 0);
	279	read(mf, &sum, sizeof sum);
	280	printf("%9d swap ins\n", sum.v_swpin);
	281	printf("%9d swap outs\n", sum.v_swpout);
	282	printf("%9d pages swapped in\n", sum.v_pswpin / CLSIZE);
	283	printf("%9d pages swapped out\n", sum.v_pswpout / CLSIZE);
	284	printf("%9d total address trans. faults taken\n", sum.v_faults);
	285	printf("%9d page ins\n", sum.v_pgin);
	286	printf("%9d page outs\n", sum.v_pgout);
513dfff1 BJ	287	printf("%9d pages paged in\n", sum.v_pgpgin);
	288	printf("%9d pages paged out\n", sum.v_pgpgout);
	289	printf("%9d sequential process pages freed\n", sum.v_seqfree);
e23f616a SL	290	printf("%9d total reclaims (%d%% fast)\n", sum.v_pgrec,
e23f616a SL	291	(sum.v_fastpgrec * 100) / (sum.v_pgrec == 0 ? 1 : sum.v_pgrec));
7f02df2f BJ	292	printf("%9d reclaims from free list\n", sum.v_pgfrec);
	293	printf("%9d intransit blocking page faults\n", sum.v_intrans);
	294	printf("%9d zero fill pages created\n", sum.v_nzfod / CLSIZE);
	295	printf("%9d zero fill page faults\n", sum.v_zfod / CLSIZE);
	296	printf("%9d executable fill pages created\n", sum.v_nexfod / CLSIZE);
	297	printf("%9d executable fill page faults\n", sum.v_exfod / CLSIZE);
	298	printf("%9d swap text pages found in free list\n", sum.v_xsfrec);
	299	printf("%9d inode text pages found in free list\n", sum.v_xifrec);
	300	printf("%9d file fill pages created\n", sum.v_nvrfod / CLSIZE);
	301	printf("%9d file fill page faults\n", sum.v_vrfod / CLSIZE);
	302	printf("%9d pages examined by the clock daemon\n", sum.v_scan);
	303	printf("%9d revolutions of the clock hand\n", sum.v_rev);
	304	printf("%9d pages freed by the clock daemon\n", sum.v_dfree / CLSIZE);
	305	printf("%9d cpu context switches\n", sum.v_swtch);
	306	printf("%9d device interrupts\n", sum.v_intr);
	307	printf("%9d pseduo-dma dz interrupts\n", sum.v_pdma);
	308	printf("%9d traps\n", sum.v_trap);
	309	printf("%9d system calls\n", sum.v_syscall);
dfdfb4c8 KM	310	lseek(mf, (long)nl[X_NCHSTATS].n_value, 0);
	311	read(mf, &statbuf, sizeof statbuf);
	312	nchtotal = statbuf.ncs_goodhits + statbuf.ncs_badhits +
	313	statbuf.ncs_miss + statbuf.ncs_long;
	314	printf("%9d total name lookups", nchtotal);
	315	printf(" (cache hits %d%% system %d%% per-process)\n",
	316	statbuf.ncs_goodhits * 100 / nchtotal,
	317	statbuf.ncs_pass2 * 100 / nchtotal);
7f02df2f BJ	318	}
7f02df2f BJ	319
7f02df2f BJ	320	doforkst()
	321	{
	322
	323	lseek(mf, (long)nl[X_FORKSTAT].n_value, 0);
	324	read(mf, &forkstat, sizeof forkstat);
	325	printf("%d forks, %d pages, average=%.2f\n",
	326	forkstat.cntfork, forkstat.sizfork,
	327	(float) forkstat.sizfork / forkstat.cntfork);
	328	printf("%d vforks, %d pages, average=%.2f\n",
	329	forkstat.cntvfork, forkstat.sizvfork,
	330	(float)forkstat.sizvfork / forkstat.cntvfork);
	331	}
	332
	333	stats(dn)
	334	{
	335
	336	if (dn >= DK_NDRIVE) {
	337	printf(" 0");
	338	return;
	339	}
682f1dcb	340	printf("%3.0f", s.xfer[dn]/etime);
7f02df2f BJ	341	}
	342
	343	double
	344	stat1(row)
	345	{
682f1dcb BJ	346	double t;
682f1dcb BJ	347	register i;
7f02df2f BJ	348
	349	t = 0;
	350	for(i=0; i<CPUSTATES; i++)
682f1dcb BJ	351	t += s.time[i];
	352	if(t == 0.)
	353	t = 1.;
	354	return(s.time[row]*100./t);
7f02df2f BJ	355	}
	356
	357	pct(top, bot)
	358	{
	359
	360	if (bot == 0)
	361	return (0);
	362	return ((top * 100) / bot);
	363	}
61d7d2b3	364
338c4a5d	365	#define steal(where, var) lseek(mf, where, 0); read(mf, &var, sizeof var);
61d7d2b3 MT	366	/*
61d7d2b3 MT	367	* Read the drive names out of kmem.
61d7d2b3	368	*/
338c4a5d	369	#ifdef vax
61d7d2b3 MT	370	read_names()
	371	{
	372	struct mba_device mdev;
	373	register struct mba_device *mp;
	374	struct mba_driver mdrv;
	375	short two_char;
	376	char cp = (char ) &two_char;
	377	struct uba_device udev, *up;
	378	struct uba_driver udrv;
	379
	380	mp = (struct mba_device *) nl[X_MBDINIT].n_value;
	381	up = (struct uba_device *) nl[X_UBDINIT].n_value;
93ca0bfe	382	if (up == 0) {
338c4a5d	383	fprintf(stderr, "vmstat: Disk init info not in namelist\n");
61d7d2b3 MT	384	exit(1);
61d7d2b3 MT	385	}
93ca0bfe	386	if (mp) for (;;) {
61d7d2b3 MT	387	steal(mp++, mdev);
	388	if (mdev.mi_driver == 0)
	389	break;
	390	if (mdev.mi_dk < 0 \|\| mdev.mi_alive == 0)
	391	continue;
	392	steal(mdev.mi_driver, mdrv);
	393	steal(mdrv.md_dname, two_char);
	394	sprintf(dr_name[mdev.mi_dk], "%c%c", cp[0], cp[1]);
	395	dr_unit[mdev.mi_dk] = mdev.mi_unit;
	396	}
93ca0bfe	397	for (;;) {
61d7d2b3 MT	398	steal(up++, udev);
	399	if (udev.ui_driver == 0)
	400	break;
	401	if (udev.ui_dk < 0 \|\| udev.ui_alive == 0)
	402	continue;
	403	steal(udev.ui_driver, udrv);
	404	steal(udrv.ud_dname, two_char);
	405	sprintf(dr_name[udev.ui_dk], "%c%c", cp[0], cp[1]);
	406	dr_unit[udev.ui_dk] = udev.ui_unit;
	407	}
	408	}
338c4a5d SL	409	#endif
	410
	411	#ifdef sun
	412	read_names()
	413	{
	414	struct mb_device mdev;
	415	register struct mb_device *mp;
	416	struct mb_driver mdrv;
	417	short two_char;
	418	char cp = (char ) &two_char;
	419
	420	mp = (struct mb_device *) nl[X_MBDINIT].n_value;
	421	if (mp == 0) {
	422	fprintf(stderr, "iostat: Disk init info not in namelist\n");
	423	exit(1);
	424	}
	425	for (;;) {
	426	steal(mp++, mdev);
	427	if (mdev.md_driver == 0)
	428	break;
	429	if (mdev.md_dk < 0 \|\| mdev.md_alive == 0)
	430	continue;
	431	steal(mdev.md_driver, mdrv);
	432	steal(mdrv.mdr_dname, two_char);
	433	sprintf(dr_name[mdev.md_dk], "%c%c%d", cp[0], cp[1]);
	434	dr_unit[mdev.md_dk] = mdev.md_unit;
	435	}
	436	}
	437	#endif