/*
 * 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. 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/ttycom.h>

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

struct statinfo cur, last;
uint64_t tk_nin, old_tk_nin, diff_tk_nin;
uint64_t tk_nout, old_tk_nout, diff_tk_nout;
struct kinfo_cputime cp_time, old_cp_time, diff_cp_time;
double cp_time_total;
int num_devices;
struct device_selection *dev_select;
int maxshowdevs;
int dflag = 0, Dflag=0, Iflag = 0, Cflag = 0, Tflag = 0, oflag = 0, Kflag = 0;

/* local function declarations */
static void usage(void);
static void phdr(int signo);
static void devstats(int perf_select);
static void cpustats(void);
static void adddeletion(const char *prefix,
            int num_selected, char ***deletions, int *num_deletions);

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]"
                " [-n devs]\n"
                "\t      [-t type,if,pass] [-w wait] [drives]\n");
}

int
main(int argc, char **argv)
{
        int c;
        int hflag = 0, cflag = 0, wflag = 0, nflag = 0;
        int count = 0, waittime = 0;
        struct devstat_match *matches;
        int num_matches = 0;
        int num_deletions = 0;
        int hz;
        int headercount;
        long generation;
        int num_devices_specified;
        int num_selected, num_selections;
        long select_generation;
        char **deletions;
        char **specified_devices;
        devstat_select_mode select_mode;

        matches = NULL;
        deletions = NULL;
        maxshowdevs = 3;

        while ((c = getopt(argc, argv, "c:CdDhIKM:n:N:ot:Tw:")) != -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 'D':
                                Dflag++;
                                break;
                        case 'h':
                                hflag++;
                                break;
                        case 'I':
                                Iflag++;
                                break;
                        case 'K':
                                Kflag++;
                                break;
                        case 'n':
                                nflag++;
                                maxshowdevs = atoi(optarg);
                                if (maxshowdevs < 0)
                                        errx(1, "number of devices %d is < 0",
                                             maxshowdevs);
                                break;
                        case 'o':
                                oflag++;
                                break;
                        case 't':
                                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;
                        default:
                                usage();
                                exit(1);
                                break;
                }
        }

        argc -= optind;
        argv += optind;

        /*
         * 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);

        /*
         * Figure out how many devices we should display.
         */
        if (nflag == 0) {
                struct winsize ws;

                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;
                }
                if (ioctl(1, TIOCGWINSZ, &ws) >= 0 && ws.ws_col > 80)
                        maxshowdevs += (ws.ws_col - 80) / 17;
        }

        /* 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);
        }

        /*
         * These devices are not usually desired
         */
        if (select_mode == DS_SELECT_ADD) {
                adddeletion("md", num_selected, &deletions, &num_deletions);
                adddeletion("pass", num_selected, &deletions, &num_deletions);
                adddeletion("sg", num_selected, &deletions, &num_deletions);
                if (selectdevs(&dev_select, &num_selected,
                               &num_selections, &select_generation,
                               generation, cur.dinfo->devices, num_devices,
                               matches, num_matches,
                               deletions, num_deletions,
                               DS_SELECT_REMOVE, maxshowdevs, hflag) == -1) {
                        errx(1, "%s", devstat_errbuf);
                }
                select_mode = DS_SELECT_ADDONLY;
        }

        /*
         * 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;

        if (kinfo_get_sched_hz(&hz))
                err(1, "kinfo_get_sched_hz");
        if (kinfo_get_sched_stathz(&hz))
                err(1, "kinfo_get_sched_stathz");

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

        for (headercount = 1;;) {
                struct devinfo *tmp_dinfo;

                if (!--headercount) {
                        phdr(0);
                        headercount = 20;
                }
                if (kinfo_get_tty_tk_nin(&tk_nin))
                        err(1, "kinfo_get_tty_tk_nin");
                if (kinfo_get_tty_tk_nout(&tk_nout))
                        err(1, "kinfo_get_tty_tk_nout");
                if (kinfo_get_sched_cputime(&cp_time))
                        err(1, "kinfo_get_sched_cputime");

                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;
                        }
                }

                diff_tk_nin = tk_nin - old_tk_nin;
                old_tk_nin = tk_nin;
                diff_tk_nout = tk_nout - old_tk_nout;
                old_tk_nout = tk_nout;

                diff_cp_time.cp_user = cp_time.cp_user - old_cp_time.cp_user;
                diff_cp_time.cp_nice = cp_time.cp_nice - old_cp_time.cp_nice;
                diff_cp_time.cp_sys = cp_time.cp_sys - old_cp_time.cp_sys;
                diff_cp_time.cp_intr = cp_time.cp_intr - old_cp_time.cp_intr;
                diff_cp_time.cp_idle = cp_time.cp_idle - old_cp_time.cp_idle;
                cp_time_total = diff_cp_time.cp_user + diff_cp_time.cp_nice +
                    diff_cp_time.cp_sys + diff_cp_time.cp_intr +
                    diff_cp_time.cp_idle;
                old_cp_time = cp_time;

                if (cp_time_total == 0.0)
                        cp_time_total = 1.0;

                if ((dflag == 0) || (Tflag > 0))
                        printf("%4.0f%5.0f", diff_tk_nin / cp_time_total * 1e6, 
                                diff_tk_nout / cp_time_total * 1e6);
                devstats(hflag);
                if ((dflag == 0) || (Cflag > 0))
                        cpustats();
                printf("\n");
                fflush(stdout);

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

                sleep(waittime);
        }

        exit(0);
}

static void
adddeletion(const char *prefix, int num_selected,
            char ***deletions, int *num_deletions)
{
        int i;

        for (i = 0; i < num_selected; i++) {
                char tmpstr[80];

                if (strcmp(prefix, dev_select[i].device_name) != 0)
                        continue;
                snprintf(tmpstr, sizeof(tmpstr), "%s%d",
                        dev_select[i].device_name, dev_select[i].unit_number);
                ++*num_deletions;
                *deletions = realloc(*deletions,
                                     *num_deletions * sizeof(char *));
                (*deletions)[*num_deletions - 1] = strdup(tmpstr);
        }
}


static void
phdr(__unused int signo)
{
        int i;
        int printed;

        if ((dflag == 0) || (Tflag > 0))
                printf("      tty");
        for (i = 0, printed=0;(i < num_devices) && (printed < maxshowdevs);i++){
                int di;
                if (dev_select[i].selected != 0) {
                        di = dev_select[i].position;
                        if (oflag > 0)
                                printf("%12.6s%d ", 
                                            cur.dinfo->devices[di].device_name,
                                            cur.dinfo->devices[di].unit_number);
                        else
                                if (Dflag > 0)
                                        printf("%19.6s%d            ",
                                                    cur.dinfo->devices[di].device_name,
                                                    cur.dinfo->devices[di].unit_number);
                                else
                                        printf("%15.6s%d ",
                                                    cur.dinfo->devices[di].device_name,
                                                    cur.dinfo->devices[di].unit_number);
                        printed++;
                }
        }
        if ((dflag == 0) || (Cflag > 0))
                printf("            cpu\n");
        else
                printf("\n");

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

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

}

static void
devstats(int perf_select)
{
        int dn;
        long double kb_per_transfer;
        long double transfers_per_second;
        long double transfers_per_secondr, transfers_per_secondw;
        long double mb_per_second;
        long double mb_per_secondr, mb_per_secondw;
        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;
        
        /*
         * 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;

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

                di = dev_select[dn].position;

                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 (compute_stats_read(&cur.dinfo->devices[di],
                                &last.dinfo->devices[di], busy_seconds,
                                NULL, NULL,
                                NULL, NULL,
                                &transfers_per_secondr, &mb_per_secondr,
                                NULL, NULL)!= 0)
                        errx(1, "%s", devstat_errbuf);
                if (compute_stats_write(&cur.dinfo->devices[di],
                                &last.dinfo->devices[di], busy_seconds,
                                NULL, NULL,
                                NULL, NULL,
                                &transfers_per_secondw, &mb_per_secondw,
                                NULL, NULL)!= 0)
                        errx(1, "%s", devstat_errbuf);

                if (perf_select != 0) {
                        dev_select[dn].bytes = total_bytes;
                        if (dev_select[dn].selected == 0)
                                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("%4.1ju%4.1ju%5.*Lf ",
                                       (uintmax_t)total_blocks,
                                       (uintmax_t)total_transfers,
                                       msdig,
                                       ms_per_transaction);
                } else {
                        if (Iflag == 0) 
                                if (Dflag > 0) {
                                        printf(" %5.2Lf %4.0Lf %6.2Lf %4.0Lf %6.2Lf  ",
                                               kb_per_transfer,
                                               transfers_per_secondr,
                                               mb_per_secondr,
                                               transfers_per_secondw,
                                               mb_per_secondw);
                                } else {
                                        printf(" %5.2Lf %4.0Lf %5.2Lf ",
                                               kb_per_transfer,
                                               transfers_per_second,
                                               mb_per_second);
                                }
                        else {
                                total_mb = total_bytes;
                                total_mb /= 1024 * 1024;

                                printf(" %5.2Lf %3.1ju %5.2Lf ",
                                       kb_per_transfer,
                                       (uintmax_t)total_transfers,
                                       total_mb);
                        }
                }
        }
}

static void
cpustats(void)
{
        if (cp_time_total == 0.0)
                cp_time_total = 1.0;

        printf(" %2.0f", 100. * diff_cp_time.cp_user / cp_time_total);
        printf(" %2.0f", 100. * diff_cp_time.cp_nice / cp_time_total);
        printf(" %2.0f", 100. * diff_cp_time.cp_sys / cp_time_total);
        printf(" %2.0f", 100. * diff_cp_time.cp_intr / cp_time_total);
        printf(" %2.0f", 100. * diff_cp_time.cp_idle / cp_time_total);
}