Return to vmstat.c CVS log

Up to [local] / src / usr.bin / systat

systat(1): vmstat: dinfo(): compute rates using real elapsed time

The "naptime" value is not the real elapsed time.  But showkre() has
the real elapsed time, "etime", so pass that as argument to dinfo().

Link: https://marc.info/?l=openbsd-tech&m=167095169115427&w=2

ok millert@

/*	$OpenBSD: vmstat.c,v 1.96 2022/12/28 20:49:05 cheloha Exp $	*/
/*	$NetBSD: vmstat.c,v 1.5 1996/05/10 23:16:40 thorpej Exp $	*/

/*-
 * 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. 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.
 */

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

#include <sys/types.h>
#include <sys/namei.h>
#include <sys/signal.h>
#include <sys/proc.h>
#include <sys/sched.h>
#include <sys/stat.h>
#include <sys/sysctl.h>
#include <sys/time.h>
#include <sys/vmmeter.h>

#include <ctype.h>
#include <errno.h>
#include <err.h>
#include <paths.h>
#include <signal.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>

#include "systat.h"
#include "dkstats.h"

#define MAXIMUM(a, b)	(((a) > (b)) ? (a) : (b))
#define MINIMUM(a, b)	(((a) < (b)) ? (a) : (b))
#define nitems(_a)	(sizeof((_a)) / sizeof((_a)[0]))

static struct Info {
	struct	cpustats cpustats;
	struct	uvmexp uvmexp;
	struct	vmtotal Total;
	struct	nchstats nchstats;
	long	nchcount;
	uint64_t *intrcnt;
} s, s1, s2, s3, z;

static int ncpu;

extern struct _disk	cur;

#define	cnt s.Cnt
#define oldcnt s1.Cnt
#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, double);
static void getinfo(struct Info *);
void putint(int, int, int, int);
void putintmk(int, int, int, int);
void putuint64(u_int64_t, int, int, int);
void putfloat(double, int, int, int, int, int);
int ucount(void);

void print_vm(void);
int read_vm(void);
int select_vm(void);
int vm_keyboard_callback(int);

static	time_t t;
static	int nintr;
static	long *intrloc;
static	char **intrname;
static	int ipktsrow;

WINDOW *
openkre(void)
{
	return (subwin(stdscr, LINES-1-1, 0, 1, 0));
}

void
closekre(WINDOW *w)
{

	if (w == NULL)
		return;
	wclear(w);
	wrefresh(w);
	delwin(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 34 cols */
#define MEMCOL		 0
#define PAGEROW		 2	/* uses 4 rows and 26 cols */
#define PAGECOL		37
#define INTSROW		 2	/* uses all rows to bottom and 17 cols */
#define INTSCOL		63
#define PROCSROW	 7	/* uses 2 rows and 20 cols */
#define PROCSCOL	 0
#define GENSTATROW	 7	/* uses 2 rows and 35 cols */
#define GENSTATCOL	16
#define VMSTATROW	 7	/* uses 18 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 49 cols */
#define NAMEICOL	 0
#define DISKROW		18	/* uses 5 rows and 50 cols (for 9 drives) */
#define DISKCOL		 0

#define	DRIVESPACE	45	/* max space for drives */


field_def *view_vm_0[] = {
	NULL
};

/* Define view managers */
struct view_manager vmstat_mgr = {
	"VMstat", select_vm, read_vm, NULL, print_header,
	print_vm, vm_keyboard_callback, NULL, NULL
};

field_view views_vm[] = {
	{view_vm_0, "vmstat", '7', &vmstat_mgr},
	{NULL, NULL, 0, NULL}
};

int
initvmstat(void)
{
	field_view *v;
	int mib[4], i;
	size_t size;

	if (!dkinit(1))
		return(0);

	mib[0] = CTL_HW;
	mib[1] = HW_NCPU;
	size = sizeof(ncpu);
	if (sysctl(mib, 2, &ncpu, &size, NULL, 0) == -1)
		return (-1);

	mib[0] = CTL_KERN;
	mib[1] = KERN_INTRCNT;
	mib[2] = KERN_INTRCNT_NUM;
	size = sizeof(nintr);
	if (sysctl(mib, 3, &nintr, &size, NULL, 0) == -1)
		return (-1);

	intrloc = calloc(nintr, sizeof(long));
	intrname = calloc(nintr, sizeof(char *));
	if (intrloc == NULL || intrname == NULL)
		err(2, NULL);

	for (i = 0; i < nintr; i++) {
		char name[128];

		mib[0] = CTL_KERN;
		mib[1] = KERN_INTRCNT;
		mib[2] = KERN_INTRCNT_NAME;
		mib[3] = i;
		size = sizeof(name);
		if (sysctl(mib, 4, name, &size, NULL, 0) == -1)
			return (-1);

		intrname[i] = strdup(name);
		if (intrname[i] == NULL)
			return (-1);
	}

	allocinfo(&s);
	allocinfo(&s1);
	allocinfo(&s2);
	allocinfo(&s3);
	allocinfo(&z);

	getinfo(&s2);
	copyinfo(&z, &s1);

	for (v = views_vm; v->name != NULL; v++)
		add_view(v);

	return(1);
}

void
fetchkre(void)
{
	getinfo(&s3);
}

void
labelkre(void)
{
	int i, j, l;

	mvprintw(MEMROW, MEMCOL,     "            memory totals (in KB)");
	mvprintw(MEMROW + 1, MEMCOL, "           real   virtual     free");
	mvprintw(MEMROW + 2, MEMCOL, "Active");
	mvprintw(MEMROW + 3, MEMCOL, "All");

	mvprintw(PAGEROW, PAGECOL, "        PAGING   SWAPPING ");
	mvprintw(PAGEROW + 1, PAGECOL, "        in  out   in  out ");
	mvprintw(PAGEROW + 2, PAGECOL, "ops");
	mvprintw(PAGEROW + 3, PAGECOL, "pages");

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

	j = INTSROW + 2;
	for (i = 0; i < nintr; i++) {
		intrloc[i] = 0;
		if (s.intrcnt[i] == 0 || ipktsrow == LINES)
			continue;
		intrloc[i] = j++;
		mvprintw(intrloc[i], INTSCOL + 9, "%-8.8s", intrname[i]);
	}
	ipktsrow = MAXIMUM(j, MINIMUM(LINES - 3, VMSTATROW + 17));
	if (LINES - 1 > ipktsrow)
		mvprintw(ipktsrow, INTSCOL + 9, "IPKTS");
	if (LINES - 1 > ipktsrow + 1)
		mvprintw(ipktsrow + 1, INTSCOL + 9, "OPKTS");

	mvprintw(VMSTATROW + 0, VMSTATCOL + 10, "forks");
	mvprintw(VMSTATROW + 1, VMSTATCOL + 10, "fkppw");
	mvprintw(VMSTATROW + 2, VMSTATCOL + 10, "fksvm");
	mvprintw(VMSTATROW + 3, VMSTATCOL + 10, "pwait");
	mvprintw(VMSTATROW + 4, VMSTATCOL + 10, "relck");
	mvprintw(VMSTATROW + 5, VMSTATCOL + 10, "rlkok");
	mvprintw(VMSTATROW + 6, VMSTATCOL + 10, "noram");
	mvprintw(VMSTATROW + 7, VMSTATCOL + 10, "ndcpy");
	mvprintw(VMSTATROW + 8, VMSTATCOL + 10, "fltcp");
	mvprintw(VMSTATROW + 9, VMSTATCOL + 10, "zfod");
	mvprintw(VMSTATROW + 10, VMSTATCOL + 10, "cow");
	mvprintw(VMSTATROW + 11, VMSTATCOL + 10, "fmin");
	mvprintw(VMSTATROW + 12, VMSTATCOL + 10, "ftarg");
	mvprintw(VMSTATROW + 13, VMSTATCOL + 10, "itarg");
	mvprintw(VMSTATROW + 14, VMSTATCOL + 10, "wired");
	mvprintw(VMSTATROW + 15, VMSTATCOL + 10, "pdfre");
	if (LINES - 1 > VMSTATROW + 16)
		mvprintw(VMSTATROW + 16, VMSTATCOL + 10, "pdscn");
	if (LINES - 1 > VMSTATROW + 17)
		mvprintw(VMSTATROW + 17, VMSTATCOL + 10, "pzidl");
	if (LINES - 1 > VMSTATROW + 18)
		mvprintw(VMSTATROW + 18, VMSTATCOL + 10, "kmape");

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

	mvprintw(GRAPHROW, GRAPHCOL,
	    "    . %%Int    . %%Spn    . %%Sys    . %%Usr    . %%Idle");
	mvprintw(PROCSROW, PROCSCOL, "Proc:r  d  s  w");
	mvprintw(GRAPHROW + 1, GRAPHCOL,
	    "|    |    |    |    |    |    |    |    |    |    |");

	mvprintw(NAMEIROW, NAMEICOL,
	    "Namei         Sys-cache    Proc-cache    No-cache");
	mvprintw(NAMEIROW + 1, NAMEICOL,
	    "    Calls     hits    %%    hits     %%    miss   %%");
	mvprintw(DISKROW, DISKCOL, "Disks");
	mvprintw(DISKROW + 1, DISKCOL, "seeks");
	mvprintw(DISKROW + 2, DISKCOL, "xfers");
	mvprintw(DISKROW + 3, DISKCOL, "speed");
	mvprintw(DISKROW + 4, DISKCOL, "  sec");
	for (i = 0, j = 0; i < cur.dk_ndrive && j < DRIVESPACE; i++)
		if (cur.dk_select[i] && (j + strlen(dr_name[i])) < DRIVESPACE) {
			l = MAXIMUM(5, strlen(dr_name[i]));
			mvprintw(DISKROW, DISKCOL + 5 + j,
			    " %*s", l, dr_name[i]);
			j += 1 + l;
		}
	for (i = 0; i < nintr; i++) {
		if (intrloc[i] == 0)
			continue;
		mvprintw(intrloc[i], INTSCOL + 9, "%-8.8s", intrname[i]);
	}
}

#define X(fld)	{s.fld[i]-=s1.fld[i];}
#define Y(fld)	{s.fld -= s1.fld;}
#define Z(fld)	{s.nchstats.fld -= s1.nchstats.fld;}
#define PUTRATE(fld, l, c, w) \
	do { \
		Y(fld); \
		putint((int)((float)s.fld/etime + 0.5), l, c, w); \
	} while (0)

static	char cpuchar[] = { '|', '@', '=', '>', ' ' };
static	char cpuorder[] = { CP_INTR, CP_SPIN, CP_SYS, CP_USER, CP_IDLE };

void
showkre(void)
{
	static struct timespec prev;
	struct timespec elapsed, now;
	float f1, f2;
	int psiz;
	u_int64_t inttotal, intcnt;
	int i, l, c;
	static int first_run = 0;
	double etime;

	clock_gettime(CLOCK_UPTIME, &now);
	timespecsub(&now, &prev, &elapsed);
	prev = now;
	if (state == TIME) {
		if (!first_run) {
			first_run = 1;
			return;
		}
	}
	etime = elapsed.tv_sec + elapsed.tv_nsec / 1000000000.0;
	for (i = 0; i < CPUSTATES; i++)
		X(cpustats.cs_time);
	inttotal = 0;
	for (i = 0; i < nintr; i++) {
		t = intcnt = s.intrcnt[i];
		s.intrcnt[i] -= s1.intrcnt[i];
		intcnt = (u_int64_t)((float)s.intrcnt[i]/etime + 0.5);
		inttotal += intcnt;
		if (intrloc[i] != 0)
			putuint64(intcnt, intrloc[i], INTSCOL, 8);
	}
	putuint64(inttotal, INTSROW + 1, INTSCOL, 8);
	Z(ncs_goodhits); Z(ncs_badhits); Z(ncs_miss);
	Z(ncs_long); Z(ncs_pass2); Z(ncs_2passes);
	s.nchcount = nchtotal.ncs_goodhits + nchtotal.ncs_badhits +
	    nchtotal.ncs_miss + nchtotal.ncs_long;

	if (LINES - 1 > ipktsrow)
		putint(sum.ifc_ip, ipktsrow, INTSCOL, 8);
	if (LINES - 1 > ipktsrow + 1)
		putint(sum.ifc_op, ipktsrow + 1, INTSCOL, 8);

	psiz = 0;
	f2 = 0.0;

	for (c = 0; c < nitems(cpuorder); c++) {
		i = cpuorder[c];
		f1 = cputime(i);
		if (i == CP_USER)
			f1 += cputime(CP_NICE);
		f2 += f1;
		l = (int) ((f2 + 1.0) / 2.0) - psiz;
		putfloat(f1, GRAPHROW, GRAPHCOL + 1 + (10 * c), 5, 1, 0);
		move(GRAPHROW + 2, psiz);
		psiz += l;
		while (l-- > 0)
			addch(cpuchar[c]);
	}

#define pgtokb(pg)	((pg) * (s.uvmexp.pagesize / 1024))

	putint(pgtokb(s.uvmexp.active), MEMROW + 2, MEMCOL + 7, 8);
	putint(pgtokb(s.uvmexp.active + s.uvmexp.swpginuse),    /* XXX */
	    MEMROW + 2, MEMCOL + 17, 8);
	putint(pgtokb(s.uvmexp.npages - s.uvmexp.free), MEMROW + 3, MEMCOL + 7, 8);
	putint(pgtokb(s.uvmexp.npages - s.uvmexp.free + s.uvmexp.swpginuse),
	    MEMROW + 3, MEMCOL + 17, 8);
	putint(pgtokb(s.uvmexp.free), MEMROW + 2, MEMCOL + 26, 8);
	putint(pgtokb(s.uvmexp.free + s.uvmexp.swpages - s.uvmexp.swpginuse),
	    MEMROW + 3, MEMCOL + 26, 8);
	putint(total.t_rq - 1, PROCSROW + 1, PROCSCOL + 3, 3);

	putint(total.t_dw, PROCSROW + 1, PROCSCOL + 6, 3);
	putint(total.t_sl, PROCSROW + 1, PROCSCOL + 9, 3);
	putint(total.t_sw, PROCSROW + 1, PROCSCOL + 12, 3);
	PUTRATE(uvmexp.forks, VMSTATROW + 0, VMSTATCOL + 3, 6);
	PUTRATE(uvmexp.forks_ppwait, VMSTATROW + 1, VMSTATCOL + 3, 6);
	PUTRATE(uvmexp.forks_sharevm, VMSTATROW + 2, VMSTATCOL + 3, 6);
	PUTRATE(uvmexp.fltpgwait, VMSTATROW + 3, VMSTATCOL + 4, 5);
	PUTRATE(uvmexp.fltrelck, VMSTATROW + 4, VMSTATCOL + 3, 6);
	PUTRATE(uvmexp.fltrelckok, VMSTATROW + 5, VMSTATCOL + 3, 6);
	PUTRATE(uvmexp.fltnoram, VMSTATROW + 6, VMSTATCOL + 3, 6);
	PUTRATE(uvmexp.fltamcopy, VMSTATROW + 7, VMSTATCOL + 3, 6);
	PUTRATE(uvmexp.flt_prcopy, VMSTATROW + 8, VMSTATCOL + 3, 6);
	PUTRATE(uvmexp.flt_przero, VMSTATROW + 9, VMSTATCOL + 3, 6);
	PUTRATE(uvmexp.flt_acow, VMSTATROW + 10, VMSTATCOL, 9);
	putint(s.uvmexp.freemin, VMSTATROW + 11, VMSTATCOL, 9);
	putint(s.uvmexp.freetarg, VMSTATROW + 12, VMSTATCOL, 9);
	putint(s.uvmexp.inactarg, VMSTATROW + 13, VMSTATCOL, 9);
	putint(s.uvmexp.wired, VMSTATROW + 14, VMSTATCOL, 9);
	PUTRATE(uvmexp.pdfreed, VMSTATROW + 15, VMSTATCOL, 9);
	if (LINES - 1 > VMSTATROW + 16)
		PUTRATE(uvmexp.pdscans, VMSTATROW + 16, VMSTATCOL, 9);
	if (LINES - 1 > VMSTATROW + 17)
		PUTRATE(uvmexp.zeropages, VMSTATROW + 17, VMSTATCOL, 9);
	if (LINES - 1 > VMSTATROW + 18)
		putint(s.uvmexp.kmapent, VMSTATROW + 18, VMSTATCOL, 9);

	PUTRATE(uvmexp.pageins, PAGEROW + 2, PAGECOL + 5, 5);
	PUTRATE(uvmexp.pdpageouts, PAGEROW + 2, PAGECOL + 10, 5);
	PUTRATE(uvmexp.pgswapin, PAGEROW + 3, PAGECOL + 5, 5);
	PUTRATE(uvmexp.pgswapout, PAGEROW + 3, PAGECOL + 10, 5);

	PUTRATE(uvmexp.swtch, GENSTATROW + 1, GENSTATCOL, 6);
	PUTRATE(uvmexp.traps, GENSTATROW + 1, GENSTATCOL + 6, 6);
	PUTRATE(uvmexp.syscalls, GENSTATROW + 1, GENSTATCOL + 12, 6);
	PUTRATE(uvmexp.intrs, GENSTATROW + 1, GENSTATCOL + 18, 6);
	PUTRATE(uvmexp.softs, GENSTATROW + 1, GENSTATCOL + 24, 6);
	PUTRATE(uvmexp.faults, GENSTATROW + 1, GENSTATCOL + 30, 5);
	mvprintw(DISKROW, DISKCOL + 5, "                              ");
	for (i = 0, c = 0; i < cur.dk_ndrive && c < DRIVESPACE; i++)
		if (cur.dk_select[i] && (c + strlen(dr_name[i])) < DRIVESPACE) {
			l = MAXIMUM(5, strlen(dr_name[i]));
			mvprintw(DISKROW, DISKCOL + 5 + c,
			    " %*s", l, dr_name[i]);
			c += 1 + l;
			dinfo(i, c, etime);
		}
	/* and pad the DRIVESPACE */
	l = DRIVESPACE - c;
	for (i = 0; i < 5; i++)
		mvprintw(DISKROW + i, DISKCOL + 5 + c, "%*s", l, "");

	putint(s.nchcount, NAMEIROW + 2, NAMEICOL, 9);
	putint(nchtotal.ncs_goodhits, NAMEIROW + 2, NAMEICOL + 10, 8);
#define nz(x)	((x) ? (x) : 1)
	putfloat(nchtotal.ncs_goodhits * 100.0 / nz(s.nchcount),
	    NAMEIROW + 2, NAMEICOL + 19, 4, 0, 1);
	putint(nchtotal.ncs_pass2, NAMEIROW + 2, NAMEICOL + 24, 7);
	putfloat(nchtotal.ncs_pass2 * 100.0 / nz(s.nchcount),
	    NAMEIROW + 2, NAMEICOL + 33, 4, 0, 1);
	putint(nchtotal.ncs_miss + nchtotal.ncs_long - nchtotal.ncs_pass2,
	   NAMEIROW + 2, NAMEICOL + 38, 7);
	putfloat((nchtotal.ncs_miss + nchtotal.ncs_long - nchtotal.ncs_pass2) *
	    100.0 / nz(s.nchcount), NAMEIROW + 2, NAMEICOL + 45, 4, 0, 1);
#undef nz

}

int
vm_keyboard_callback(int ch)
{
	switch(ch) {
	case 'r':
		copyinfo(&s2, &s1);
		state = RUN;
		break;
	case 'b':
		state = BOOT;
		copyinfo(&z, &s1);
		break;
	case 't':
		state = TIME;
		break;
	case 'z':
		if (state == RUN)
			getinfo(&s1);
		break;
	}
	return (keyboard_callback(ch));
}


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

	tm = 0;
	for (i = 0; i < nitems(s.cpustats.cs_time); i++)
		tm += s.cpustats.cs_time[i];
	if (tm == 0.0)
		tm = 1.0;
	return (s.cpustats.cs_time[indx] * 100.0 / tm);
}

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

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

void
putintmk(int n, int l, int c, int w)
{
	char b[128];

	move(l, c);
	if (n == 0) {
		while (w-- > 0)
			addch(' ');
		return;
	}
	if (n > 9999 * 1024)
		snprintf(b, sizeof b, "%*dG", w - 1, n / 1024 / 1024);
	else if (n > 9999)
		snprintf(b, sizeof b, "%*dM", w - 1, n / 1024);
	else
		snprintf(b, sizeof b, "%*dK", w - 1, n);
	if (strlen(b) > w) {
		while (w-- > 0)
			addch('*');
		return;
	}
	addstr(b);
}

void
putuint64(u_int64_t n, int l, int c, int w)
{
	char b[128];

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

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

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

static void
getinfo(struct Info *si)
{
	static int cpustats_mib[3] = { CTL_KERN, KERN_CPUSTATS, 0 };
	static int nchstats_mib[2] = { CTL_KERN, KERN_NCHSTATS };
	static int uvmexp_mib[2] = { CTL_VM, VM_UVMEXP };
	static int vmtotal_mib[2] = { CTL_VM, VM_METER };
	struct cpustats cs;
	int mib[4], i, j;
	size_t size;

	dkreadstats();

	for (i = 0; i < nintr; i++) {
		mib[0] = CTL_KERN;
		mib[1] = KERN_INTRCNT;
		mib[2] = KERN_INTRCNT_CNT;
		mib[3] = i;
		size = sizeof(si->intrcnt[i]);
		if (sysctl(mib, 4, &si->intrcnt[i], &size, NULL, 0) == -1) {
			si->intrcnt[i] = 0;
		}
	}

	memset(&si->cpustats.cs_time, 0, sizeof(si->cpustats.cs_time));
	for (i = 0; i < ncpu; i++) {
		cpustats_mib[2] = i;
		size = sizeof(cs);
		if (sysctl(cpustats_mib, 3, &cs, &size, NULL, 0) == -1) {
			error("Can't get KERN_CPUSTATS: %s\n", strerror(errno));
			memset(&si->cpustats, 0, sizeof(si->cpustats));
		}
		if ((cs.cs_flags & CPUSTATS_ONLINE) == 0)
			continue;	/* omit totals for offline CPUs */
		for (j = 0; j < nitems(cs.cs_time); j++)
			si->cpustats.cs_time[j] += cs.cs_time[j];
	}

	size = sizeof(si->nchstats);
	if (sysctl(nchstats_mib, 2, &si->nchstats, &size, NULL, 0) == -1) {
		error("Can't get KERN_NCHSTATS: %s\n", strerror(errno));
		memset(&si->nchstats, 0, sizeof(si->nchstats));
	}

	size = sizeof(si->uvmexp);
	if (sysctl(uvmexp_mib, 2, &si->uvmexp, &size, NULL, 0) == -1) {
		error("Can't get VM_UVMEXP: %s\n", strerror(errno));
		memset(&si->uvmexp, 0, sizeof(si->uvmexp));
	}

	size = sizeof(si->Total);
	if (sysctl(vmtotal_mib, 2, &si->Total, &size, NULL, 0) == -1) {
		error("Can't get VM_METER: %s\n", strerror(errno));
		memset(&si->Total, 0, sizeof(si->Total));
	}
}

static void
allocinfo(struct Info *si)
{
	memset(si, 0, sizeof(*si));
	si->intrcnt = calloc(nintr, sizeof(*si->intrcnt));
	if (si->intrcnt == NULL)
		err(2, NULL);
}

static void
copyinfo(struct Info *from, struct Info *to)
{
	uint64_t *intrcnt;

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

static void
dinfo(int dn, int c, double etime)
{
	double words, atime;

	c += DISKCOL;

	/* time busy in disk activity */
	atime = (double)cur.dk_time[dn].tv_sec +
	    ((double)cur.dk_time[dn].tv_usec / (double)1000000);

	/* # of K transferred */
	words = (cur.dk_rbytes[dn] + cur.dk_wbytes[dn]) / 1024.0;

	putint((int)((float)cur.dk_seek[dn]/etime+0.5), DISKROW + 1, c, 5);
	putint((int)((float)(cur.dk_rxfer[dn] + cur.dk_wxfer[dn])/etime+0.5),
	    DISKROW + 2, c, 5);
	putintmk((int)(words/etime + 0.5), DISKROW + 3, c, 5);
	putfloat(atime/etime, DISKROW + 4, c, 5, 1, 1);
}



int
select_vm(void)
{
	num_disp = 0;
	return (0);
}

int
read_vm(void)
{
	if (state == TIME)
		copyinfo(&s3, &s1);
	fetchkre();
	fetchifstat();
	if (state == TIME)
		dkswap();
	num_disp = 0;
	return 0;
}


void
print_vm(void)
{
	copyinfo(&s3, &s);
	labelkre();
	showkre();
}