/* $NetBSD: iostat.c,v 1.37.38.2 2019/01/30 13:46:25 martin 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. */ #include #ifndef lint #if 0 static char sccsid[] = "@(#)iostat.c 8.1 (Berkeley) 6/6/93"; #endif __RCSID("$NetBSD: iostat.c,v 1.37.38.2 2019/01/30 13:46:25 martin Exp $"); #endif /* not lint */ #include #include #include "systat.h" #include "extern.h" #include "drvstats.h" static int linesperregion; static int numbers = 0; /* default display bar graphs */ static int secs = 0; /* default seconds shown */ static int read_write = 0; /* default read/write 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, -1, 0, 5, 0)); } void closeiostat(WINDOW *w) { if (w == NULL) return; wclear(w); wrefresh(w); delwin(w); } int initiostat(void) { drvinit(1); cpureadstats(); drvreadstats(); return(1); } void fetchiostat(void) { cpureadstats(); if (ndrive != 0) drvreadstats(); } #define INSET 14 void labeliostat(void) { int row; if (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 col, regions; size_t i, ndrives; #define COLWIDTH (9 + secs * 5 + 1 + read_write * 9 + 1) #define DRIVESPERLINE ((getmaxx(wnd) + 1) / COLWIDTH) for (ndrives = 0, i = 0; i < ndrive; i++) if (cur.select[i]) ndrives++; regions = howmany(ndrives, DRIVESPERLINE); /* * Deduct -regions for blank line after each scrolling region. */ linesperregion = (getmaxy(wnd) - row - regions + 1) / 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 < ndrive; i++) if (cur.select[i]) { if (col + COLWIDTH - 1 > getmaxx(wnd)) { col = 0, row += linesperregion + 1; if (row > getmaxy(wnd) - (linesperregion)) break; } mvwprintw(wnd, row, col + 5, "%s", cur.name[i]); if (read_write) mvwprintw(wnd, row, col + 11 + secs * 5, "(write)"); mvwprintw(wnd, row + 1, col, " kBps %s", read_write ? "r/s" : "tps"); if (secs) waddstr(wnd, " sec"); if (read_write) waddstr(wnd, " kBps w/s"); col += COLWIDTH; } if (col) row += linesperregion + 1; return (row); } static int barlabels(int row) { size_t i; mvwaddstr(wnd, row++, INSET, "/0 /10 /20 /30 /40 /50 /60 /70 /80 /90 /100"); linesperregion = 2 + secs + (read_write ? 2 : 0); for (i = 0; i < ndrive; i++) { if (cur.select[i]) { if (row > getmaxy(wnd) - linesperregion) break; mvwprintw(wnd, row++, 0, "%7.7s kBps|", cur.name[i]); mvwaddstr(wnd, row++, 0, " tps|"); if (read_write) { mvwprintw(wnd, row++, 0, " (write) kBps|"); mvwaddstr(wnd, row++, 0, " tps|"); } if (secs) mvwaddstr(wnd, row++, 0, " msec|"); } } return (row); } void showiostat(void) { int row, col; size_t i; if (ndrive == 0) return; cpuswap(); drvswap(); etime = cur.cp_etime; 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 < ndrive; i++) if (cur.select[i]) { 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 < ndrive; i++) if (cur.select[i]) { if (col + COLWIDTH - 1 > 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, dtime, rwords, wwords; uint64_t rxfer; /* elapsed time for disk stats */ dtime = etime; if (cur.timestamp[dn].tv_sec || cur.timestamp[dn].tv_usec) dtime = (double)cur.timestamp[dn].tv_sec + ((double)cur.timestamp[dn].tv_usec / (double)1000000); /* time busy in disk activity */ atime = (double)cur.time[dn].tv_sec + ((double)cur.time[dn].tv_usec / (double)1000000); /* # of k transferred */ rwords = cur.rbytes[dn] / 1024.0; wwords = cur.wbytes[dn] / 1024.0; rxfer = cur.rxfer[dn]; if (!read_write) { rwords += wwords; rxfer += cur.wxfer[dn]; } if (numbers) { mvwprintw(wnd, row, col, "%5.0f%4.0f", rwords / dtime, rxfer / dtime); if (secs) wprintw(wnd, "%5.1f", atime / dtime); if (read_write) wprintw(wnd, " %5.0f%4.0f", wwords / dtime, cur.wxfer[dn] / dtime); return (row); } wmove(wnd, row++, col); histogram(rwords / dtime, 50, 0.5); wmove(wnd, row++, col); histogram(rxfer / dtime, 50, 0.5); if (read_write) { wmove(wnd, row++, col); histogram(wwords / dtime, 50, 0.5); wmove(wnd, row++, col); histogram(cur.wxfer[dn] / dtime, 50, 0.5); } if (secs) { wmove(wnd, row++, col); atime *= 1000; /* In milliseconds */ histogram(atime / dtime, 50, 0.5); } return (row); } static void stat1(int row, int o) { size_t i; double total_time; total_time = 0; for (i = 0; i < CPUSTATES; i++) total_time += cur.cp_time[i]; if (total_time == 0.0) total_time = 1.0; wmove(wnd, row, INSET); #define CPUSCALE 0.5 histogram(100.0 * cur.cp_time[o] / total_time, 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); } 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(); } void iostat_rw(char *args) { read_write ^= 1; wclear(wnd); labeliostat(); refresh(); } void iostat_all(char *args) { read_write = 0; wclear(wnd); labeliostat(); refresh(); }