path: root/util/diskstat.c

#ifndef FreeBSD
    #include <stdio.h>
    int main(int argc, char **argv)
    {
    puts("sorry, this program is designed for FreeBSD only");
    return 0;
    }
#else
/*
 * Copyright (c) 1997, 1998  Kenneth D. Merry.
 * 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. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
 *
 * $FreeBSD: src/usr.sbin/iostat/iostat.c,v 1.17.2.2 2001/07/19 04:15:42 kris Exp $
 */
/*
 * Parts of this program are derived from the original FreeBSD iostat
 * program:
 */
/*-
 * Copyright (c) 1986, 1991, 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.
 */
/*
 * Ideas for the new iostat statistics output modes taken from the NetBSD
 * version of iostat:
 */
/*
 * Copyright (c) 1996 John M. Vinopal
 * 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 for the NetBSD Project
 *      by John M. Vinopal.
 * 4. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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/param.h>
#include <sys/errno.h>
#include <sys/dkstat.h>

#include <err.h>
#include <ctype.h>
#include <fcntl.h>
#include <kvm.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <limits.h>
#include <devstat.h>

struct nlist namelist[] = {
#define X_TK_NIN    0
    { "_tk_nin" },
#define X_TK_NOUT   1
    { "_tk_nout" },
#define X_CP_TIME   2
    { "_cp_time" },
#define X_HZ        3
    { "_hz" },
#define X_STATHZ    4
    { "_stathz" },
#define X_END       4
    { NULL },
};

struct statinfo cur, last;
int num_devices;
struct device_selection *dev_select;
int maxshowdevs;
int dflag = 1, Iflag = 0, Cflag = 0, Tflag = 0, oflag = 0, Kflag = 0, Bflag = 1, qflag = 0, sflag = 0, aflag = 0, fflag = 1;

#define nlread(x, v) \
    kvm_read(kd, namelist[x].n_value, &(v), sizeof(v))

/* local function declarations */
static void usage(void);
static void phdr(int signo);
static void devstats(int perf_select);
static void cpustats(void);
static void printresult(int p);

static void
usage(void)
{
    /*
     * We also support the following 'traditional' syntax:
     * iostat [drives] [wait [count]]
     * This isn't mentioned in the man page, or the usage statement,
     * but it is supported.
     */
    fprintf(stderr, "usage: iostat [-CdhIKoT?] [-c count] [-M core]"
        " [-n devs] [-N system]\n"
        "\t      [-t type,if,pass] [-w wait] [drives]\n");
}

char firsttime = 1;
int
main(int argc, char **argv)
{
    int c;
    register int i;
    int tflag = 0, hflag = 0, cflag = 0, wflag = 1, nflag = 0;
    int count = 0, waittime = 2;
    char *memf = NULL, *nlistf = NULL;
    struct devstat_match *matches;
    int num_matches = 0;
        char errbuf[_POSIX2_LINE_MAX];
    kvm_t    *kd;
    int hz, stathz;
    int headercount;
    long generation;
    int num_devices_specified;
    int num_selected, num_selections;
    long select_generation;
    char **specified_devices;
    devstat_select_mode select_mode;

    matches = NULL;
    maxshowdevs = 10;

    while ((c = getopt(argc, argv, "c:CdhIKM:n:N:ot:Tw:?qsaf:")) != -1) {
        switch(c) {
            case 'c':
                cflag++;
                count = atoi(optarg);
                if (count < 1)
                    errx(1, "count %d is < 1", count);
                break;
            case 'C':
                Cflag++;
                break;
            case 'd':
                dflag++;
                break;
            case 'h':
                hflag++;
                break;
            case 'I':
                Iflag++;
                break;
            case 'K':
                Kflag++;
                break;
            case 'M':
                memf = optarg;
                break;
            case 'n':
                nflag++;
                maxshowdevs = atoi(optarg);
                if (maxshowdevs < 0)
                    errx(1, "number of devices %d is < 0",
                         maxshowdevs);
                break;
            case 'N':
                nlistf = optarg;
                break;
            case 'o':
                oflag++;
                break;
            case 't':
                tflag++;
                if (buildmatch(optarg, &matches, 
                           &num_matches) != 0)
                    errx(1, "%s", devstat_errbuf);
                break;
            case 'T':
                Tflag++;
                break;
            case 'w':
                wflag++;
                waittime = atoi(optarg);
                if (waittime < 1)
                    errx(1, "wait time is < 1");
                break;
                case 'q': /* statistics only */
                    qflag++;
                break;
                case 's': /* scsi only */
                    sflag++;
                    break;
                case 'a': /* average only */
                    aflag++;
                    break;
                case 'f': /* factor output */
                    fflag = atoi(optarg);
                    break;
            default:
                usage();
                exit(1);
                break;
        }
    }

    argc -= optind;
    argv += optind;

    /*
     * Discard setgid privileges if not the running kernel so that bad
     * guys can't print interesting stuff from kernel memory.
     */
    if (nlistf != NULL || memf != NULL)
        setgid(getgid());

    /*
     * Make sure that the userland devstat version matches the kernel
     * devstat version.  If not, exit and print a message informing 
     * the user of his mistake.
     */
    if (checkversion() < 0)
        errx(1, "%s", devstat_errbuf);

#if 0
    /*
     * Figure out how many devices we should display.
     */
    if (nflag == 0) {
        if (oflag > 0) {
            if ((dflag > 0) && (Cflag == 0) && (Tflag == 0))
                maxshowdevs = 5;
            else if ((dflag > 0) && (Tflag > 0) && (Cflag == 0))
                maxshowdevs = 5;
            else
                maxshowdevs = 4;
        } else {
            if ((dflag > 0) && (Cflag == 0))
                maxshowdevs = 4;        
            else
                maxshowdevs = 3;
        }
    }
#endif

    signal(SIGINT, printresult);
    /* find out how many devices we have */
    if ((num_devices = getnumdevs()) < 0)
        err(1, "can't get number of devices");

    if ((cur.dinfo = (struct devinfo *)malloc(sizeof(struct devinfo))) ==
         NULL)
        err(1, "devinfo malloc failed");
    if ((last.dinfo = (struct devinfo *)malloc(sizeof(struct devinfo))) ==
         NULL)
        err(1, "devinfo malloc failed");
    bzero(cur.dinfo, sizeof(struct devinfo));
    bzero(last.dinfo, sizeof(struct devinfo));

    /*
     * Grab all the devices.  We don't look to see if the list has
     * changed here, since it almost certainly has.  We only look for
     * errors.
     */
    if (getdevs(&cur) == -1)
        errx(1, "%s", devstat_errbuf);

    num_devices = cur.dinfo->numdevs;
    generation = cur.dinfo->generation;

    /*
     * If the user specified any devices on the command line, see if
     * they are in the list of devices we have now.
     */
    if ((specified_devices = (char **)malloc(sizeof(char *))) == NULL)
        err(1, "specified_devices malloc failed");
    for (num_devices_specified = 0; *argv; ++argv) {
        if (isdigit(**argv))
            break;
        num_devices_specified++;
        specified_devices = (char **)realloc(specified_devices,
                             sizeof(char *) *
                             num_devices_specified);
        specified_devices[num_devices_specified - 1] = *argv;

    }
    if (nflag == 0 && maxshowdevs < num_devices_specified)
        maxshowdevs = num_devices_specified;

    dev_select = NULL;

    if ((num_devices_specified == 0) && (num_matches == 0))
        select_mode = DS_SELECT_ADD;
    else
        select_mode = DS_SELECT_ONLY;

    /*
     * At this point, selectdevs will almost surely indicate that the
     * device list has changed, so we don't look for return values of 0
     * or 1.  If we get back -1, though, there is an error.
     */
    if (selectdevs(&dev_select, &num_selected,
               &num_selections, &select_generation,
               generation, cur.dinfo->devices, num_devices,
               matches, num_matches,
               specified_devices, num_devices_specified,
               select_mode, maxshowdevs, hflag) == -1)
        errx(1, "%s", devstat_errbuf);

    /*
     * Look for the traditional wait time and count arguments.
     */
    if (*argv) {
        waittime = atoi(*argv);

        /* Let the user know he goofed, but keep going anyway */
        if (wflag != 0) 
            warnx("discarding previous wait interval, using"
                  " %d instead", waittime);
        wflag++;

        if (*++argv) {
            count = atoi(*argv);
            if (cflag != 0)
                warnx("discarding previous count, using %d"
                      " instead", count);
            cflag++;
        } else
            count = -1;
    }

    /*
     * If the user specified a count, but not an interval, we default
     * to an interval of 1 second.
     */
    if ((wflag == 0) && (cflag > 0))
        waittime = 1;

    /*
     * If the user specified a wait time, but not a count, we want to
     * go on ad infinitum.  This can be redundant if the user uses the
     * traditional method of specifying the wait, since in that case we
     * already set count = -1 above.  Oh well.
     */
    if ((wflag > 0) && (cflag == 0))
        count = -1;

    kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, errbuf);

    if (kd == 0)
        errx(1, "kvm_openfiles: %s", errbuf);

    if (kvm_nlist(kd, namelist) == -1)
        errx(1, "kvm_nlist: %s", kvm_geterr(kd));

    (void)nlread(X_HZ, hz);
    (void)nlread(X_STATHZ, stathz);
    if (stathz)
        hz = stathz;

    /*
     * If the user stops the program (control-Z) and then resumes it,
     * print out the header again.
     */
    (void)signal(SIGCONT, phdr);

    for (headercount = 1;;) {
        struct devinfo *tmp_dinfo;
        long tmp;
        double etime;

        if (!--headercount) {
            phdr(0);
            headercount = 20;
        }
        (void)kvm_read(kd, namelist[X_TK_NIN].n_value,
            &cur.tk_nin, sizeof(cur.tk_nin));
        (void)kvm_read(kd, namelist[X_TK_NOUT].n_value,
            &cur.tk_nout, sizeof(cur.tk_nout));
        (void)kvm_read(kd, namelist[X_CP_TIME].n_value,
            cur.cp_time, sizeof(cur.cp_time));

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

        last.busy_time = cur.busy_time;

        /*
         * Here what we want to do is refresh our device stats.
         * getdevs() returns 1 when the device list has changed.
         * If the device list has changed, we want to go through
         * the selection process again, in case a device that we
         * were previously displaying has gone away.
         */
        switch (getdevs(&cur)) {
        case -1:
            errx(1, "%s", devstat_errbuf);
            break;
        case 1: {
            int retval;

            num_devices = cur.dinfo->numdevs;
            generation = cur.dinfo->generation;
            retval = selectdevs(&dev_select, &num_selected,
                        &num_selections, &select_generation,
                        generation, cur.dinfo->devices,
                        num_devices, matches, num_matches,
                        specified_devices,
                        num_devices_specified,
                        select_mode, maxshowdevs, hflag);
            switch(retval) {
            case -1:
                errx(1, "%s", devstat_errbuf);
                break;
            case 1:
                phdr(0);
                headercount = 20;
                break;
            default:
                break;
            }
            break;
        }
        default:
            break;
        }

        /*
         * We only want to re-select devices if we're in 'top'
         * mode.  This is the only mode where the devices selected
         * could actually change.
         */
        if (hflag > 0) {
            int retval;
            retval = selectdevs(&dev_select, &num_selected,
                        &num_selections, &select_generation,
                        generation, cur.dinfo->devices,
                        num_devices, matches, num_matches,
                        specified_devices,
                        num_devices_specified,
                        select_mode, maxshowdevs, hflag);
            switch(retval) {
            case -1:
                errx(1,"%s", devstat_errbuf);
                break;
            case 1:
                phdr(0);
                headercount = 20;
                break;
            default:
                break;
            }
        }

        tmp = cur.tk_nin;
        cur.tk_nin -= last.tk_nin;
        last.tk_nin = tmp;
        tmp = cur.tk_nout;
        cur.tk_nout -= last.tk_nout;
        last.tk_nout = tmp;

        etime = 0.0;

#define X(fld)  tmp = cur.fld[i]; cur.fld[i] -= last.fld[i]; last.fld[i] = tmp

        for (i = 0; i < CPUSTATES; i++) {
            X(cp_time);
            etime += cur.cp_time[i];
        }
        if (etime == 0.0)
            etime = 1.0;
        etime /= (float)hz;
        if ((dflag == 0) || (Tflag > 0))
            printf("%4.0f%5.0f", cur.tk_nin / etime, 
                cur.tk_nout/etime);
        devstats(hflag);
        if ((dflag == 0) || (Cflag > 0))
            cpustats();
        if( !qflag ) printf("\n");
        fflush(stdout);

        if (count >= 0 && --count <= 0)
            break;

        sleep(waittime);
        firsttime = 0;
    }

    printresult(0);
    exit(0);
}

static void
phdr(int signo)
{
    register int i;
    int printed;
    if( firsttime ){
        for( i = 0 ; i < num_devices ; ++i ){
        int di = dev_select[i].position;
        if( strcmp(cur.dinfo->devices[di].device_name, "ad") != 0 &&
            strcmp(cur.dinfo->devices[di].device_name, "da") != 0 ){
            maxshowdevs = i;
            break;
        }
        }
    }

    if( qflag )
        return;
    if ((dflag == 0) || (Tflag > 0))
        (void)printf("      tty");
    for (i = 0, printed=0;(i < num_devices) && (printed < maxshowdevs);i++){
        int di;
        if ((dev_select[i].selected != 0)
         && (dev_select[i].selected <= maxshowdevs)) {
            di = dev_select[i].position;
            if (oflag > 0)
                (void)printf("%12.6s%d ", 
                        cur.dinfo->devices[di].device_name,
                        cur.dinfo->devices[di].unit_number);
            else
                printf("%6s%d",
                        cur.dinfo->devices[di].device_name,
                        cur.dinfo->devices[di].unit_number);
            printed++;
        }
    }
    if ((dflag == 0) || (Cflag > 0))
        (void)printf("            cpu\n");
    else
        (void)printf("\n");

    if ((dflag == 0) || (Tflag > 0))
        (void)printf(" tin tout");

    for (i=0, printed = 0;(i < num_devices) && (printed < maxshowdevs);i++){
        if ((dev_select[i].selected != 0)
         && (dev_select[i].selected <= maxshowdevs)) {
            if (oflag > 0) {
                if (Iflag == 0)
                    (void)printf(" sps tps msps ");
                else
                    (void)printf(" blk xfr msps ");
            } else {
                if(Bflag)
                printf("   busy");
                else if (Iflag == 0)
                printf("  KB/t tps  MB/s ");
                else
                printf("  KB/t xfrs   MB ");
            }
            printed++;
        }
    }
    if ((dflag == 0) || (Cflag > 0))
        (void)printf(" us ni sy in id\n");
    else 
        printf("\n");

}

int     counttimes = -1;
float   busydata[1024];
int sf(const void *a, const void *b)
{
    if( busydata[*(int *)b] > busydata[*(int *)a] )
    return 1;
    return -1;
}

static void printresult(int p)
{
    int     dn, id[1024], i;
    if( counttimes > 0 ){
    if( aflag ){
        float  dat = 0;
        int    nDrivers = 0;
        for( i = 0 ; i < maxshowdevs ; ++i )
        if( !sflag ||
            strcmp(cur.dinfo->devices[i].device_name, "da") == 0 ){
            dat += busydata[i];
            ++nDrivers;
        }
        printf("%f\n", dat * fflag / nDrivers / counttimes);
    }
    else{
        printf("\n");
        for( i = 0 ; i < maxshowdevs ; ++i )
        id[i] = i;
        qsort(id, maxshowdevs, sizeof(int), sf);
        
        printf("--- diskstat statistics (%d samples)---\n", counttimes);
        for (dn = 0; dn < maxshowdevs; dn++)
        printf(" %s%d: %10f%%\n", 
               cur.dinfo->devices[ id[dn] ].device_name,
               cur.dinfo->devices[ id[dn] ].unit_number,
               (float)busydata[ id[dn] ] / counttimes);
        printf("\n");
    }
    }
    exit(0);
}

static void
devstats(int perf_select)
{
    register int dn;
    long double transfers_per_second;
    long double kb_per_transfer, mb_per_second;
    u_int64_t total_bytes, total_transfers, total_blocks;
    long double busy_seconds;
    long double total_mb;
    long double blocks_per_second, ms_per_transaction;
    long double device_busy;

    /*
     * Calculate elapsed time up front, since it's the same for all
     * devices.
     */
    busy_seconds = compute_etime(cur.busy_time, last.busy_time);

    for (dn = 0; dn < num_devices; dn++) {
        int     di;
        float   thisbusy;

        if (((perf_select == 0) && (dev_select[dn].selected == 0))
         || (dev_select[dn].selected > maxshowdevs))
            continue;

        di = dev_select[dn].position;

        device_busy = compute_etime(cur.dinfo->devices[di].busy_time,
                        last.dinfo->devices[di].busy_time);

        if (compute_stats(&cur.dinfo->devices[di],
                  &last.dinfo->devices[di], busy_seconds,
                  &total_bytes, &total_transfers,
                  &total_blocks, &kb_per_transfer,
                  &transfers_per_second, &mb_per_second, 
                  &blocks_per_second, &ms_per_transaction)!= 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 = busy_seconds;
        if (device_busy > busy_seconds)
            /* this normally happens after one or more periods
             * where the device has been 100% busy, correct it */
            device_busy = busy_seconds;

        thisbusy = (firsttime) ? 0 : device_busy * 100 / busy_seconds;
        busydata[dn] += thisbusy;


        if (perf_select != 0) {
            dev_select[dn].bytes = total_bytes;
            if ((dev_select[dn].selected == 0)
             || (dev_select[dn].selected > maxshowdevs))
                continue;
        }

        if (Kflag) {
            int block_size = cur.dinfo->devices[di].block_size;
            total_blocks = total_blocks * (block_size ?
                               block_size : 512) / 1024;
        }

        if (oflag > 0) {
            int msdig = (ms_per_transaction < 100.0) ? 1 : 0;

            if (Iflag == 0)
                printf("%4.0Lf%4.0Lf%5.*Lf ",
                       blocks_per_second,
                       transfers_per_second,
                       msdig,
                       ms_per_transaction);
            else 
                printf("%4.1qu%4.1qu%5.*Lf ",
                       total_blocks,
                       total_transfers,
                       msdig,
                       ms_per_transaction);
        } else if( !qflag ) {
            
            if (Bflag)
            printf(" %5.1f%%", thisbusy);
            else if (Iflag == 0){
                printf(" %5.2Lf %3.0Lf %5.2Lf ", 
                       kb_per_transfer,
                       transfers_per_second,
                       mb_per_second);

            }
            else {
                total_mb = total_bytes;
                total_mb /= 1024 * 1024;

                printf(" %5.2Lf %3.1qu %5.2Lf ", 
                       kb_per_transfer,
                       total_transfers,
                       total_mb);
            }
        }
    }
    ++counttimes;
}

static void
cpustats(void)
{
    register int state;
    double time;

    time = 0.0;

    for (state = 0; state < CPUSTATES; ++state)
        time += cur.cp_time[state];
    for (state = 0; state < CPUSTATES; ++state)
        printf("%3.0f",
               100. * cur.cp_time[state] / (time ? time : 1));
}
#endif // FreeBSD