[unix-history] / usr / src / usr.sbin / iostat / iostat.c

static	char *sccsid = "@(#)iostat.c	4.6 (Berkeley) 81/04/21";
/*
 * iostat
 */
#include <stdio.h>
#include <nlist.h>
#include <sys/types.h>
#include <sys/buf.h>
#include <sys/ubavar.h>
#include <sys/mbavar.h>
#include <sys/dk.h>

struct nlist nl[] = {
	{ "_dk_busy" },
#define	X_DK_BUSY	0
	{ "_dk_time" },
#define	X_DK_TIME	1
	{ "_dk_xfer" },
#define	X_DK_XFER	2
	{ "_dk_wds" },
#define	X_DK_WDS	3
	{ "_tk_nin" },
#define	X_TK_NIN	4
	{ "_tk_nout" },
#define	X_TK_NOUT	5
	{ "_dk_seek" },
#define	X_DK_SEEK	6
	{ "_cp_time" },
#define	X_CP_TIME	7
	{ "_dk_mspw" },
#define	X_DK_MSPW	8
	{ "_mbdinit" },
#define X_MBDINIT	9
	{ "_ubdinit" },
#define X_UBDINIT	10
	{ 0 },
};

char dr_name[DK_NDRIVE][10];

struct
{
	int	dk_busy;
	long	cp_time[CPUSTATES];
	long	dk_time[DK_NDRIVE];
	long	dk_wds[DK_NDRIVE];
	long	dk_seek[DK_NDRIVE];
	long	dk_xfer[DK_NDRIVE];
	float	dk_mspw[DK_NDRIVE];
	long	tk_nin;
	long	tk_nout;
} s, s1;

int	mf;
double	etime;

main(argc, argv)
char *argv[];
{
	extern char *ctime();
	register  i;
	int iter;
	double f1, f2;
	long t;
	int tohdr = 1;

	nlist("/vmunix", nl);
	if(nl[X_DK_BUSY].n_type == 0) {
		printf("dk_busy not found in /vmunix namelist\n");
		exit(1);
	}
	mf = open("/dev/kmem", 0);
	if(mf < 0) {
		printf("cannot open /dev/kmem\n");
		exit(1);
	}
	iter = 0;
	while (argc>1&&argv[1][0]=='-') {
		argc--;
		argv++;
	}
	lseek(mf, (long)nl[X_DK_MSPW].n_value, 0);
	read(mf, s.dk_mspw, sizeof s.dk_mspw);
	for (i = 0; i < DK_NDRIVE; i++)
		sprintf(dr_name[i], "dk%d", i);
	read_names();
	if(argc > 2)
		iter = atoi(argv[2]);
loop:
	if (--tohdr == 0) {
		printf("      tty");
		for (i = 0; i < DK_NDRIVE; i++)
			if (s.dk_mspw[i] != 0.0)
				printf("          %3.3s ", dr_name[i]);
		printf("         cpu\n");
		printf(" tin tout");
		for (i = 0; i < DK_NDRIVE; i++)
			if (s.dk_mspw[i] != 0.0)
				printf(" sps tps msps ");
		printf(" us ni sy id\n");
		tohdr = 19;
	}
	lseek(mf, (long)nl[X_DK_BUSY].n_value, 0);
 	read(mf, &s.dk_busy, sizeof s.dk_busy);
 	lseek(mf, (long)nl[X_DK_TIME].n_value, 0);
 	read(mf, s.dk_time, sizeof s.dk_time);
 	lseek(mf, (long)nl[X_DK_XFER].n_value, 0);
 	read(mf, s.dk_xfer, sizeof s.dk_xfer);
 	lseek(mf, (long)nl[X_DK_WDS].n_value, 0);
 	read(mf, s.dk_wds, sizeof s.dk_wds);
 	lseek(mf, (long)nl[X_TK_NIN].n_value, 0);
 	read(mf, &s.tk_nin, sizeof s.tk_nin);
 	lseek(mf, (long)nl[X_TK_NOUT].n_value, 0);
 	read(mf, &s.tk_nout, sizeof s.tk_nout);
	lseek(mf, (long)nl[X_DK_SEEK].n_value, 0);
	read(mf, s.dk_seek, sizeof s.dk_seek);
	lseek(mf, (long)nl[X_CP_TIME].n_value, 0);
	read(mf, s.cp_time, sizeof s.cp_time);
	lseek(mf, (long)nl[X_DK_MSPW].n_value, 0);
	read(mf, s.dk_mspw, sizeof s.dk_mspw);
	for (i = 0; i < DK_NDRIVE; i++) {
#define X(fld)	t = s.fld[i]; s.fld[i] -= s1.fld[i]; s1.fld[i] = t
		X(dk_xfer); X(dk_seek); X(dk_wds); X(dk_time);
	}
	t = s.tk_nin; s.tk_nin -= s1.tk_nin; s1.tk_nin = t;
	t = s.tk_nout; s.tk_nout -= s1.tk_nout; s1.tk_nout = t;
	etime = 0;
	for(i=0; i<CPUSTATES; i++) {
		X(cp_time);
		etime += s.cp_time[i];
	}
	if (etime == 0.0)
		etime = 1.0;
	etime /= 60.0;
	printf("%4.0f%5.0f", s.tk_nin/etime, s.tk_nout/etime);
	for (i=0; i<DK_NDRIVE; i++)
		if (s.dk_mspw[i] != 0.0)
			stats(i);
	for (i=0; i<CPUSTATES; i++)
		stat1(i);
	printf("\n");
contin:
	--iter;
	if(iter)
	if(argc > 1) {
		sleep(atoi(argv[1]));
		goto loop;
	}
}

stats(dn)
{
	register i;
	double atime, words, xtime, itime;

	if (s.dk_mspw[dn] == 0.0) {
		printf("%4.0f%4.0f%5.1f ", 0.0, 0.0, 0.0);
		return;
	}
	atime = s.dk_time[dn];
	atime /= 60.0;
	words = s.dk_wds[dn]*32.0;	/* number of words transferred */
	xtime = s.dk_mspw[dn]*words;	/* transfer time */
	itime = atime - xtime;		/* time not transferring */
/*
	printf("\ndn %d, words %8.2f, atime %6.2f, xtime %6.2f, itime %6.2f\n",
	    dn, words, atime, xtime, itime);
*/
	if (xtime < 0)
		itime += xtime, xtime = 0;
	if (itime < 0)
		xtime += itime, itime = 0;
	printf("%4.0f", s.dk_seek[dn]/etime);
	printf("%4.0f", s.dk_xfer[dn]/etime);
	printf("%5.1f ",
	    s.dk_seek[dn] ? itime*1000./s.dk_seek[dn] : 0.0);
/*
	printf("%4.1f",
	    s.dk_xfer[dn] ? xtime*1000./s.dk_xfer[dn] : 0.0);
*/
}

stat1(o)
{
	register i;
	double time;

	time = 0;
	for(i=0; i<CPUSTATES; i++)
		time += s.cp_time[i];
	if (time == 0.0)
		time = 1.0;
	printf("%3.0f", 100*s.cp_time[o]/time);
}

/*
 * Read the drive names out of kmem.
 * ARGH ARGH ARGH ARGH !!!!!!!!!!!!
 */

#define steal(where, var) lseek(mf, where, 0); read(mf, &var, sizeof var);
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, "iostat: Disk init info not in namelist\n");
		exit(1);
	}
	if (mp)
	while(1)
	{
		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%d", cp[0], cp[1], mdev.mi_unit);
	}
	while(1)
	{
		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%d", cp[0], cp[1], udev.ui_unit);
	}
}
Commit	Line	Data
0e22e6c5	1	static char *sccsid = "@(#)iostat.c 4.6 (Berkeley) 81/04/21";
be974f30 BJ	2	/*
	3	* iostat
	4	*/
700789be	5	#include <stdio.h>
be974f30	6	#include <nlist.h>
700789be MT	7	#include <sys/types.h>
	8	#include <sys/buf.h>
	9	#include <sys/ubavar.h>
	10	#include <sys/mbavar.h>
be974f30 BJ	11	#include <sys/dk.h>
	12
	13	struct nlist nl[] = {
	14	{ "_dk_busy" },
	15	#define X_DK_BUSY 0
	16	{ "_dk_time" },
	17	#define X_DK_TIME 1
	18	{ "_dk_xfer" },
	19	#define X_DK_XFER 2
	20	{ "_dk_wds" },
	21	#define X_DK_WDS 3
	22	{ "_tk_nin" },
	23	#define X_TK_NIN 4
	24	{ "_tk_nout" },
	25	#define X_TK_NOUT 5
	26	{ "_dk_seek" },
	27	#define X_DK_SEEK 6
	28	{ "_cp_time" },
	29	#define X_CP_TIME 7
	30	{ "_dk_mspw" },
	31	#define X_DK_MSPW 8
700789be MT	32	{ "_mbdinit" },
	33	#define X_MBDINIT 9
	34	{ "_ubdinit" },
	35	#define X_UBDINIT 10
be974f30 BJ	36	{ 0 },
be974f30 BJ	37	};
700789be MT	38
	39	char dr_name[DK_NDRIVE][10];
	40
be974f30 BJ	41	struct
	42	{
	43	int dk_busy;
	44	long cp_time[CPUSTATES];
	45	long dk_time[DK_NDRIVE];
	46	long dk_wds[DK_NDRIVE];
	47	long dk_seek[DK_NDRIVE];
	48	long dk_xfer[DK_NDRIVE];
	49	float dk_mspw[DK_NDRIVE];
	50	long tk_nin;
	51	long tk_nout;
	52	} s, s1;
	53
	54	int mf;
	55	double etime;
	56
	57	main(argc, argv)
	58	char *argv[];
	59	{
	60	extern char *ctime();
	61	register i;
	62	int iter;
	63	double f1, f2;
	64	long t;
8b6704d4	65	int tohdr = 1;
be974f30 BJ	66
	67	nlist("/vmunix", nl);
	68	if(nl[X_DK_BUSY].n_type == 0) {
	69	printf("dk_busy not found in /vmunix namelist\n");
	70	exit(1);
	71	}
	72	mf = open("/dev/kmem", 0);
	73	if(mf < 0) {
	74	printf("cannot open /dev/kmem\n");
	75	exit(1);
	76	}
	77	iter = 0;
	78	while (argc>1&&argv[1][0]=='-') {
	79	argc--;
	80	argv++;
	81	}
	82	lseek(mf, (long)nl[X_DK_MSPW].n_value, 0);
	83	read(mf, s.dk_mspw, sizeof s.dk_mspw);
700789be MT	84	for (i = 0; i < DK_NDRIVE; i++)
	85	sprintf(dr_name[i], "dk%d", i);
	86	read_names();
be974f30 BJ	87	if(argc > 2)
be974f30 BJ	88	iter = atoi(argv[2]);
be974f30	89	loop:
8b6704d4	90	if (--tohdr == 0) {
700789be	91	printf(" tty");
8b6704d4 BJ	92	for (i = 0; i < DK_NDRIVE; i++)
8b6704d4 BJ	93	if (s.dk_mspw[i] != 0.0)
700789be MT	94	printf(" %3.3s ", dr_name[i]);
700789be MT	95	printf(" cpu\n");
8b6704d4 BJ	96	printf(" tin tout");
	97	for (i = 0; i < DK_NDRIVE; i++)
	98	if (s.dk_mspw[i] != 0.0)
	99	printf(" sps tps msps ");
	100	printf(" us ni sy id\n");
	101	tohdr = 19;
	102	}
be974f30 BJ	103	lseek(mf, (long)nl[X_DK_BUSY].n_value, 0);
	104	read(mf, &s.dk_busy, sizeof s.dk_busy);
	105	lseek(mf, (long)nl[X_DK_TIME].n_value, 0);
	106	read(mf, s.dk_time, sizeof s.dk_time);
	107	lseek(mf, (long)nl[X_DK_XFER].n_value, 0);
	108	read(mf, s.dk_xfer, sizeof s.dk_xfer);
	109	lseek(mf, (long)nl[X_DK_WDS].n_value, 0);
	110	read(mf, s.dk_wds, sizeof s.dk_wds);
	111	lseek(mf, (long)nl[X_TK_NIN].n_value, 0);
	112	read(mf, &s.tk_nin, sizeof s.tk_nin);
	113	lseek(mf, (long)nl[X_TK_NOUT].n_value, 0);
	114	read(mf, &s.tk_nout, sizeof s.tk_nout);
	115	lseek(mf, (long)nl[X_DK_SEEK].n_value, 0);
	116	read(mf, s.dk_seek, sizeof s.dk_seek);
	117	lseek(mf, (long)nl[X_CP_TIME].n_value, 0);
	118	read(mf, s.cp_time, sizeof s.cp_time);
	119	lseek(mf, (long)nl[X_DK_MSPW].n_value, 0);
	120	read(mf, s.dk_mspw, sizeof s.dk_mspw);
	121	for (i = 0; i < DK_NDRIVE; i++) {
	122	#define X(fld) t = s.fld[i]; s.fld[i] -= s1.fld[i]; s1.fld[i] = t
	123	X(dk_xfer); X(dk_seek); X(dk_wds); X(dk_time);
	124	}
	125	t = s.tk_nin; s.tk_nin -= s1.tk_nin; s1.tk_nin = t;
	126	t = s.tk_nout; s.tk_nout -= s1.tk_nout; s1.tk_nout = t;
	127	etime = 0;
	128	for(i=0; i<CPUSTATES; i++) {
	129	X(cp_time);
	130	etime += s.cp_time[i];
	131	}
	132	if (etime == 0.0)
	133	etime = 1.0;
	134	etime /= 60.0;
	135	printf("%4.0f%5.0f", s.tk_nin/etime, s.tk_nout/etime);
	136	for (i=0; i<DK_NDRIVE; i++)
	137	if (s.dk_mspw[i] != 0.0)
	138	stats(i);
	139	for (i=0; i<CPUSTATES; i++)
	140	stat1(i);
	141	printf("\n");
	142	contin:
	143	--iter;
	144	if(iter)
	145	if(argc > 1) {
	146	sleep(atoi(argv[1]));
	147	goto loop;
	148	}
	149	}
	150
	151	stats(dn)
	152	{
	153	register i;
	154	double atime, words, xtime, itime;
	155
	156	if (s.dk_mspw[dn] == 0.0) {
	157	printf("%4.0f%4.0f%5.1f ", 0.0, 0.0, 0.0);
	158	return;
	159	}
	160	atime = s.dk_time[dn];
	161	atime /= 60.0;
	162	words = s.dk_wds[dn]32.0; / number of words transferred */
	163	xtime = s.dk_mspw[dn]words; / transfer time */
	164	itime = atime - xtime; /* time not transferring */
	165	/*
	166	printf("\ndn %d, words %8.2f, atime %6.2f, xtime %6.2f, itime %6.2f\n",
167	dn, words, atime, xtime, itime);
168	*/
169	if (xtime < 0)
170	itime += xtime, xtime = 0;
171	if (itime < 0)
172	xtime += itime, itime = 0;
173	printf("%4.0f", s.dk_seek[dn]/etime);
174	printf("%4.0f", s.dk_xfer[dn]/etime);
175	printf("%5.1f ",
176	s.dk_seek[dn] ? itime*1000./s.dk_seek[dn] : 0.0);
177	/*
178	printf("%4.1f",
179	s.dk_xfer[dn] ? xtime*1000./s.dk_xfer[dn] : 0.0);
180	*/
181	}
182
183	stat1(o)
184	{
185	register i;
186	double time;
187
188	time = 0;
189	for(i=0; i<CPUSTATES; i++)
190	time += s.cp_time[i];
191	if (time == 0.0)
192	time = 1.0;
193	printf("%3.0f", 100*s.cp_time[o]/time);
194	}
700789be MT	195
	196	/*
	197	* Read the drive names out of kmem.
	198	* ARGH ARGH ARGH ARGH !!!!!!!!!!!!
	199	*/
	200
	201	#define steal(where, var) lseek(mf, where, 0); read(mf, &var, sizeof var);
	202	read_names()
	203	{
	204	struct mba_device mdev;
	205	register struct mba_device *mp;
	206	struct mba_driver mdrv;
	207	short two_char;
	208	char cp = (char ) &two_char;
	209	struct uba_device udev, *up;
	210	struct uba_driver udrv;
	211
	212	mp = (struct mba_device *) nl[X_MBDINIT].n_value;
	213	up = (struct uba_device *) nl[X_UBDINIT].n_value;
0e22e6c5	214	if (up == 0)
700789be MT	215	{
	216	fprintf(stderr, "iostat: Disk init info not in namelist\n");
	217	exit(1);
	218	}
0e22e6c5	219	if (mp)
700789be MT	220	while(1)
	221	{
	222	steal(mp++, mdev);
	223	if (mdev.mi_driver == 0)
	224	break;
	225	if (mdev.mi_dk < 0 \|\| mdev.mi_alive == 0)
	226	continue;
	227	steal(mdev.mi_driver, mdrv);
	228	steal(mdrv.md_dname, two_char);
	229	sprintf(dr_name[mdev.mi_dk], "%c%c%d", cp[0], cp[1], mdev.mi_unit);
	230	}
	231	while(1)
	232	{
	233	steal(up++, udev);
	234	if (udev.ui_driver == 0)
	235	break;
	236	if (udev.ui_dk < 0 \|\| udev.ui_alive == 0)
	237	continue;
	238	steal(udev.ui_driver, udrv);
	239	steal(udrv.ud_dname, two_char);
	240	sprintf(dr_name[udev.ui_dk], "%c%c%d", cp[0], cp[1], udev.ui_unit);
	241	}
	242	}