/* $NetBSD: iostat.c,v 1.18 2001/01/16 02:50:30 cgd Exp $ */ /* * 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. 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. */ #include #ifndef lint #if 0 static char sccsid[] = "@(#)iostat.c 8.1 (Berkeley) 6/6/93"; #endif __RCSID("$NetBSD: iostat.c,v 1.18 2001/01/16 02:50:30 cgd Exp $"); #endif /* not lint */ #include #include #include "systat.h" #include "extern.h" #include "dkstats.h" static int linesperregion; static double etime; static int numbers = 0; /* default display bar graphs */ static int secs = 0; /* default seconds shown */ static int barlabels(int); static void histogram(double, int, double); static int numlabels(int); static int stats(int, int, int); static void stat1(int, int); 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) { dkinit(1, egid); dkreadstats(); return(1); } void fetchiostat(void) { if (dk_ndrive == 0) return; dkreadstats(); } #define INSET 14 void labeliostat(void) { int row; if (dk_ndrive == 0) { error("No drives defined."); return; } 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; #define COLWIDTH 14 #define DRIVESPERLINE ((getmaxx(wnd) - INSET) / COLWIDTH) for (ndrives = 0, i = 0; i < dk_ndrive; i++) if (cur.dk_select[i]) ndrives++; regions = howmany(ndrives, DRIVESPERLINE); /* * Deduct -regions for blank line after each scrolling region. */ linesperregion = (getmaxy(wnd) - row - regions) / regions; /* * Minimum region contains space for two * label lines and one line of statistics. */ if (linesperregion < 3) linesperregion = 3; col = 0; for (i = 0; i < dk_ndrive; i++) if (cur.dk_select[i] /*&& cur.dk_bytes[i] != 0.0*/) { if (col + COLWIDTH >= getmaxx(wnd) - INSET) { col = 0, row += linesperregion + 1; if (row > getmaxy(wnd) - (linesperregion + 1)) break; } mvwaddstr(wnd, row, col + 4, cur.dk_name[i]); mvwaddstr(wnd, row + 1, col, "KBps tps sec"); col += COLWIDTH; } if (col) row += linesperregion + 1; return (row); } static int barlabels(int row) { int i; mvwaddstr(wnd, row++, INSET, "/0 /10 /20 /30 /40 /50 /60 /70 /80 /90 /100"); linesperregion = 2 + secs; for (i = 0; i < dk_ndrive; i++) if (cur.dk_select[i] /*&& cur.dk_bytes[i] != 0.0*/) { if (row > getmaxy(wnd) - linesperregion) break; mvwprintw(wnd, row++, 0, "%7.7s KBps|", cur.dk_name[i]); mvwaddstr(wnd, row++, 0, " tps|"); if (secs) mvwaddstr(wnd, row++, 0, " msec|"); } return (row); } void showiostat(void) { int i, row, col; if (dk_ndrive == 0) return; dkswap(); etime = 0; for(i = 0; i < CPUSTATES; i++) { etime += cur.cp_time[i]; } if (etime == 0.0) etime = 1.0; etime /= (float) hz; row = 1; /* * Interrupt CPU state not calculated yet. */ for (i = 0; i < CPUSTATES; i++) stat1(row++, i); if (!numbers) { row += 2; for (i = 0; i < dk_ndrive; i++) if (cur.dk_select[i] /*&& cur.dk_bytes[i] != 0.0*/) { if (row > getmaxy(wnd) - linesperregion) break; row = stats(row, INSET, i); } return; } col = 0; wmove(wnd, row + linesperregion, 0); wdeleteln(wnd); wmove(wnd, row + 3, 0); winsertln(wnd); for (i = 0; i < dk_ndrive; i++) if (cur.dk_select[i] /*&& cur.dk_bytes[i] != 0.0*/) { if (col + COLWIDTH >= getmaxx(wnd)) { col = 0, row += linesperregion + 1; if (row > getmaxy(wnd) - (linesperregion + 1)) break; wmove(wnd, row + linesperregion, 0); wdeleteln(wnd); wmove(wnd, row + 3, 0); winsertln(wnd); } (void) stats(row + 3, col, i); col += COLWIDTH; } } static int stats(int row, int col, int dn) { double atime, words; /* time busy in disk activity */ atime = (double)cur.dk_time[dn].tv_sec + ((double)cur.dk_time[dn].tv_usec / (double)1000000); words = cur.dk_bytes[dn] / 1024.0; /* # of K transferred */ if (numbers) { mvwprintw(wnd, row, col, " %3.0f%4.0f%5.1f", words / etime, cur.dk_xfer[dn] / etime, atime / etime); return (row); } wmove(wnd, row++, col); histogram(words / etime, 50, 0.5); wmove(wnd, row++, col); histogram(cur.dk_xfer[dn] / etime, 50, 0.5); if (secs) { wmove(wnd, row++, col); atime *= 1000; /* In milliseconds */ histogram(atime / etime, 50, 0.5); } return (row); } static void stat1(int row, int o) { int i; double time; time = 0; for (i = 0; i < CPUSTATES; i++) time += cur.cp_time[i]; if (time == 0.0) time = 1.0; wmove(wnd, row, INSET); #define CPUSCALE 0.5 histogram(100.0 * cur.cp_time[o] / time, 50, CPUSCALE); } static void histogram(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, "%4.1f", val); k -= strlen(buf); while (k--) waddch(wnd, 'X'); waddstr(wnd, buf); wclrtoeol(wnd); return; } wclrtoeol(wnd); whline(wnd, 'X', k); } void iostat_bars(char *args) { numbers = 0; wclear(wnd); labeliostat(); refresh(); } void iostat_numbers(char *args) { numbers = 1; wclear(wnd); labeliostat(); refresh(); } void iostat_secs(char *args) { secs = !secs; wclear(wnd); labeliostat(); refresh(); }