/* * Copyright (c) 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.bin/systat/iostat.c,v 1.9.2.1 2000/07/02 10:03:17 ps Exp $ * * @(#)iostat.c 8.1 (Berkeley) 6/6/93 */ /* * Copyright (c) 1980, 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. */ #include #include #include #include #include #include #include "systat.h" #include "extern.h" #include "devs.h" struct statinfo cur, last; static struct kinfo_cputime cp_time; static int linesperregion; static int numbers = 0; /* default display bar graphs */ static int kbpt = 0; /* default ms/seek shown */ static int barlabels(int); static void histogram(long double, int, double); static int numlabels(int); static int devstats(int, int, int); static void stat1(int, uint64_t, uint64_t); WINDOW * openiostat(void) { return (subwin(stdscr, LINES-1-5, 0, 5, 0)); } void closeiostat(WINDOW *w) { if (w == NULL) return; wclear(w); wrefresh(w); delwin(w); } int initiostat(void) { if ((num_devices = getnumdevs()) < 0) return(0); cur.dinfo = (struct devinfo *)malloc(sizeof(struct devinfo)); last.dinfo = (struct devinfo *)malloc(sizeof(struct devinfo)); bzero(cur.dinfo, sizeof(struct devinfo)); bzero(last.dinfo, sizeof(struct devinfo)); /* * This value for maxshowdevs (100) is bogus. I'm not sure exactly * how to calculate it, though. */ if (dsinit(100, &cur, &last, NULL) != 1) return(0); return(1); } void fetchiostat(void) { struct devinfo *tmp_dinfo; 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: cmdiostat("refresh", NULL); break; default: break; } num_devices = cur.dinfo->numdevs; generation = cur.dinfo->generation; } #define INSET 10 void labeliostat(void) { int row; row = 0; wmove(wnd, row, 0); wclrtobot(wnd); mvwaddstr(wnd, row++, INSET, "/0 /10 /20 /30 /40 /50 /60 /70 /80 /90 /100"); mvwaddstr(wnd, row++, 0, "cpu user|"); mvwaddstr(wnd, row++, 0, " nice|"); mvwaddstr(wnd, row++, 0, " system|"); mvwaddstr(wnd, row++, 0, "interrupt|"); mvwaddstr(wnd, row++, 0, " idle|"); if (numbers) row = numlabels(row + 1); else row = barlabels(row + 1); } static int numlabels(int row) { int i, _col, regions, ndrives; char tmpstr[10]; #define COLWIDTH 17 #define DRIVESPERLINE ((wnd->_maxx - INSET) / COLWIDTH) for (ndrives = 0, i = 0; i < num_devices; i++) if (dev_select[i].selected) ndrives++; regions = howmany(ndrives, DRIVESPERLINE); /* * Deduct -regions for blank line after each scrolling region. */ linesperregion = (wnd->_maxy - row - regions) / regions; /* * Minimum region contains space for two * label lines and one line of statistics. */ if (linesperregion < 3) linesperregion = 3; _col = INSET; for (i = 0; i < num_devices; i++) if (dev_select[i].selected) { if (_col + COLWIDTH >= wnd->_maxx - INSET) { _col = INSET, row += linesperregion + 1; if (row > wnd->_maxy - (linesperregion + 1)) break; } sprintf(tmpstr, "%.6s%d", dev_select[i].device_name, dev_select[i].unit_number); mvwaddstr(wnd, row, _col + 4, tmpstr); mvwaddstr(wnd, row + 1, _col, " KB/t tps MB/s "); _col += COLWIDTH; } if (_col) row += linesperregion + 1; return (row); } static int barlabels(int row) { int i; char tmpstr[10]; mvwaddstr(wnd, row++, INSET, "/0 /10 /20 /30 /40 /50 /60 /70 /80 /90 /100"); linesperregion = 2 + kbpt; for (i = 0; i < num_devices; i++) if (dev_select[i].selected) { if (row > wnd->_maxy - linesperregion) break; sprintf(tmpstr, "%.4s%d", dev_select[i].device_name, dev_select[i].unit_number); mvwprintw(wnd, row++, 0, "%-5.5s MB/s|", tmpstr); mvwaddstr(wnd, row++, 0, " tps|"); if (kbpt) mvwaddstr(wnd, row++, 0, " KB/t|"); } return (row); } void showiostat(void) { int i, row, _col; struct kinfo_cputime diff_cp_time; uint64_t cp_total; 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; old_cp_time = cp_time; row = 1; cp_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; stat1(row++, diff_cp_time.cp_user, cp_total); stat1(row++, diff_cp_time.cp_nice, cp_total); stat1(row++, diff_cp_time.cp_sys, cp_total); stat1(row++, diff_cp_time.cp_intr, cp_total); stat1(row++, diff_cp_time.cp_idle, cp_total); if (!numbers) { row += 2; for (i = 0; i < num_devices; i++) if (dev_select[i].selected) { if (row > wnd->_maxy - linesperregion) break; row = devstats(row, INSET, i); } return; } _col = INSET; wmove(wnd, row + linesperregion, 0); wdeleteln(wnd); wmove(wnd, row + 3, 0); winsertln(wnd); for (i = 0; i < num_devices; i++) if (dev_select[i].selected) { if (_col + COLWIDTH >= wnd->_maxx - INSET) { _col = INSET, row += linesperregion + 1; if (row > wnd->_maxy - (linesperregion + 1)) break; wmove(wnd, row + linesperregion, 0); wdeleteln(wnd); wmove(wnd, row + 3, 0); winsertln(wnd); } (void) devstats(row + 3, _col, i); _col += COLWIDTH; } } static int devstats(int row, int _col, int dn) { long double transfers_per_second; long double kb_per_transfer, mb_per_second; long double busy_seconds; int di; di = dev_select[dn].position; busy_seconds = compute_etime(cur.busy_time, last.busy_time); if (compute_stats(&cur.dinfo->devices[di], &last.dinfo->devices[di], busy_seconds, NULL, NULL, NULL, &kb_per_transfer, &transfers_per_second, &mb_per_second, NULL, NULL) != 0) errx(1, "%s", devstat_errbuf); if (numbers) { mvwprintw(wnd, row, _col, " %5.2Lf %3.0Lf %5.2Lf ", kb_per_transfer, transfers_per_second, mb_per_second); return(row); } wmove(wnd, row++, _col); histogram(mb_per_second, 50, .5); wmove(wnd, row++, _col); histogram(transfers_per_second, 50, .5); if (kbpt) { wmove(wnd, row++, _col); histogram(kb_per_transfer, 50, .5); } return(row); } static void stat1(int row, uint64_t difference, uint64_t total) { double dtime; if (total > 0) dtime = 100.0 * difference / total; else dtime = 0; wmove(wnd, row, INSET); #define CPUSCALE 0.5 histogram(dtime, 50, CPUSCALE); } static void histogram(long double val, int colwidth, double scale) { char buf[10]; int k; int v = (int)(val * scale) + 0.5; if (val <= 0) v = 0; k = MIN(v, colwidth); if (v > colwidth) { snprintf(buf, sizeof(buf), "%5.2Lf", val); k -= strlen(buf); while (k--) waddch(wnd, 'X'); waddstr(wnd, buf); return; } while (k--) waddch(wnd, 'X'); wclrtoeol(wnd); } int cmdiostat(const char *cmd, char *args) { if (prefix(cmd, "kbpt")) kbpt = !kbpt; else if (prefix(cmd, "numbers")) numbers = 1; else if (prefix(cmd, "bars")) numbers = 0; else if (!dscmd(cmd, args, 100, &cur)) return (0); wclear(wnd); labeliostat(); refresh(); return (1); }