/* $OpenBSD: iostat.c,v 1.24 2006/03/31 04:10:59 deraadt Exp $ */ /* $NetBSD: iostat.c,v 1.5 1996/05/10 23:16:35 thorpej 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. 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. */ #ifndef lint #if 0 static char sccsid[] = "@(#)iostat.c 8.1 (Berkeley) 6/6/93"; #endif static char rcsid[] = "$OpenBSD: iostat.c,v 1.24 2006/03/31 04:10:59 deraadt Exp $"; #endif /* not lint */ #include #include #include #include #include #include #include #include "systat.h" #include "extern.h" #include "dkstats.h" extern struct _disk cur, last; static int linesperregion; static double etime; static int numbers = 0; /* default display bar graphs */ static int secs = 0; /* default seconds shown */ static int split = 0; /* whether to split r/w stats */ 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); dkreadstats(); return (1); } void fetchiostat(void) { if (cur.dk_ndrive == 0) return; dkreadstats(); } #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; if (cur.dk_ndrive == 0) { mvwaddstr(wnd, row++, INSET, "No drives attached."); return (row); } #define COLWIDTH (split ? 30 : 17) #define DRIVESPERLINE ((wnd->_maxx - INSET) / COLWIDTH) for (ndrives = 0, i = 0; i < cur.dk_ndrive; i++) if (cur.dk_select[i]) 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 < cur.dk_ndrive; i++) if (cur.dk_select[i] /*&& cur.dk_bytes[i] != 0.0*/) { if (col + COLWIDTH >= wnd->_maxx) { col = INSET, row += linesperregion + 1; if (row > wnd->_maxy - (linesperregion + 1)) break; } mvwaddstr(wnd, row, col + 4, cur.dk_name[i]); if (split) mvwaddstr(wnd, row + 1, col, " rKBps wKBps " "rtps wtps sec"); else mvwaddstr(wnd, row + 1, col, " KBps tps sec"); col += COLWIDTH; } if (col) row += linesperregion + 1; return (row); } static int barlabels(int row) { int i; if (cur.dk_ndrive == 0) { mvwaddstr(wnd, row++, INSET, "No drives attached."); return (row); } 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 > wnd->_maxy - linesperregion) break; if (split) { mvwprintw(wnd, row++, 0, "%4.4s rKps|", cur.dk_name[i]); mvwaddstr(wnd, row++, 0, " wKps|"); mvwaddstr(wnd, row++, 0, " rtps|"); mvwaddstr(wnd, row++, 0, " wtps|"); } else { mvwprintw(wnd, row++, 0, "%4.4s Kps|", 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; 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 (last.dk_ndrive != cur.dk_ndrive) labeliostat(); if (cur.dk_ndrive == 0) return; if (!numbers) { row += 2; for (i = 0; i < cur.dk_ndrive; i++) if (cur.dk_select[i] /*&& cur.dk_bytes[i] != 0.0*/) { if (row > wnd->_maxy - linesperregion) break; row = stats(row, INSET, i); } return; } col = INSET; wmove(wnd, row + linesperregion, 0); wdeleteln(wnd); wmove(wnd, row + 3, 0); winsertln(wnd); for (i = 0; i < cur.dk_ndrive; i++) if (cur.dk_select[i] /*&& cur.dk_bytes[i] != 0.0*/) { if (col + COLWIDTH >= wnd->_maxx) { 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) stats(row + 3, col, i); col += COLWIDTH; } } static int stats(int row, int col, int dn) { double atime, rwords, wwords; /* time busy in disk activity */ atime = (double)cur.dk_time[dn].tv_sec + ((double)cur.dk_time[dn].tv_usec / (double)1000000); rwords = cur.dk_rbytes[dn] / 1024.0; /* # of K read */ wwords = cur.dk_wbytes[dn] / 1024.0; /* # of K written */ if (numbers) { if (split) mvwprintw(wnd, row, col, "%6.0f%6.0f%5.0f%5.0f%5.1f", rwords / etime, wwords / etime, cur.dk_rxfer[dn] / etime, cur.dk_wxfer[dn] / etime, atime / etime); else mvwprintw(wnd, row, col, "%5.0f%4.0f%5.1f", (rwords + wwords) / etime, (cur.dk_rxfer[dn] + cur.dk_wxfer[dn]) / etime, atime / etime); return (row); } if (split) { wmove(wnd, row++, col); histogram(rwords / etime, 50, 0.5); wmove(wnd, row++, col); histogram(wwords / etime, 50, 0.5); wmove(wnd, row++, col); histogram(cur.dk_rxfer[dn] / etime, 50, 0.5); wmove(wnd, row++, col); histogram(cur.dk_wxfer[dn] / etime, 50, 0.5); } else { wmove(wnd, row++, col); histogram((rwords + wwords) / etime, 50, 0.5); wmove(wnd, row++, col); histogram((cur.dk_rxfer[dn] + cur.dk_wxfer[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 tim; tim = 0; for (i = 0; i < CPUSTATES; i++) tim += cur.cp_time[i]; if (tim == 0.0) tim = 1.0; wmove(wnd, row, INSET); #define CPUSCALE 0.5 histogram(100.0 * cur.cp_time[o] / tim, 50, CPUSCALE); } static void histogram(double val, int colwidth, double scale) { int v = (int)(val * scale + 0.5); int factor = 1; int y, x; while (v > colwidth) { v = (v + 5) / 10; factor *= 10; } getyx(wnd, y, x); wclrtoeol(wnd); whline(wnd, 'X', v); if (factor != 1) mvwprintw(wnd, y, x + colwidth + 1, "* %d ", factor); } int cmdiostat(char *cmd, char *args) { if (prefix(cmd, "secs")) secs = !secs; else if (prefix(cmd, "numbers")) numbers = 1; else if (prefix(cmd, "bars")) numbers = 0; else if (prefix(cmd, "split")) split = ~split; else if (!dkcmd(cmd, args)) return (0); wclear(wnd); labeliostat(); refresh(); return (1); }