/* * 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. */ /* * 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. * 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. */ #include __FBSDID("$FreeBSD$"); #ifdef lint static const char sccsid[] = "@(#)iostat.c 8.1 (Berkeley) 6/6/93"; #endif #include #include #include #include #include #include #include #include #include #include "systat.h" #include "extern.h" #include "devs.h" struct statinfo cur, last; static int linesperregion; static double etime; 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, int); WINDOW * openiostat(void) { return (subwin(stdscr, LINES-3-1, 0, MAINWIN_ROW, 0)); } void closeiostat(WINDOW *w) { if (w == NULL) return; wclear(w); wrefresh(w); delwin(w); } int initiostat(void) { if ((num_devices = devstat_getnumdevs(NULL)) < 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; size_t len; len = sizeof(cur.cp_time); if (sysctlbyname("kern.cp_time", &cur.cp_time, &len, NULL, 0) || len != sizeof(cur.cp_time)) { perror("kern.cp_time"); exit (1); } tmp_dinfo = last.dinfo; last.dinfo = cur.dinfo; cur.dinfo = tmp_dinfo; last.snap_time = cur.snap_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 (devstat_getdevs(NULL, &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, "%s%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, "%s%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) { long t; int i, row, _col; #define X(fld) t = cur.fld[i]; cur.fld[i] -= last.fld[i]; last.fld[i] = t etime = 0; for(i = 0; i < CPUSTATES; i++) { X(cp_time); etime += cur.cp_time[i]; } if (etime == 0.0) etime = 1.0; etime /= hertz; row = 1; for (i = 0; i < CPUSTATES; i++) stat1(row++, i); 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 = cur.snap_time - last.snap_time; if (devstat_compute_statistics(&cur.dinfo->devices[di], &last.dinfo->devices[di], busy_seconds, DSM_KB_PER_TRANSFER, &kb_per_transfer, DSM_TRANSFERS_PER_SECOND, &transfers_per_second, DSM_MB_PER_SECOND, &mb_per_second, DSM_NONE) != 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, int o) { int i; double dtime; dtime = 0.0; for (i = 0; i < CPUSTATES; i++) dtime += cur.cp_time[i]; if (dtime == 0.0) dtime = 1.0; wmove(wnd, row, INSET); #define CPUSCALE 0.5 histogram(100.0 * cur.cp_time[o] / 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; 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, const 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); }