2 * Copyright (c) 1998 Kenneth D. Merry.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. The name of the author may not be used to endorse or promote products
14 * derived from this software without specific prior written permission.
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * Copyright (c) 1980, 1992, 1993
30 * The Regents of the University of California. All rights reserved.
32 * Redistribution and use in source and binary forms, with or without
33 * modification, are permitted provided that the following conditions
35 * 1. Redistributions of source code must retain the above copyright
36 * notice, this list of conditions and the following disclaimer.
37 * 2. Redistributions in binary form must reproduce the above copyright
38 * notice, this list of conditions and the following disclaimer in the
39 * documentation and/or other materials provided with the distribution.
40 * 3. All advertising materials mentioning features or use of this software
41 * must display the following acknowledgement:
42 * This product includes software developed by the University of
43 * California, Berkeley and its contributors.
44 * 4. Neither the name of the University nor the names of its contributors
45 * may be used to endorse or promote products derived from this software
46 * without specific prior written permission.
48 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
49 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
50 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
51 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
52 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
53 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
54 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
55 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
56 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
57 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
61 #include <sys/cdefs.h>
63 __FBSDID("$FreeBSD$");
66 static const char sccsid[] = "@(#)iostat.c 8.1 (Berkeley) 6/6/93";
69 #include <sys/param.h>
70 #include <sys/dkstat.h>
71 #include <sys/sysctl.h>
84 struct statinfo cur, last;
86 static int linesperregion;
88 static int numbers = 0; /* default display bar graphs */
89 static int kbpt = 0; /* default ms/seek shown */
91 static int barlabels(int);
92 static void histogram(long double, int, double);
93 static int numlabels(int);
94 static int devstats(int, int, int);
95 static void stat1(int, int);
100 return (subwin(stdscr, LINES-1-5, 0, 5, 0));
117 if ((num_devices = devstat_getnumdevs(NULL)) < 0)
120 cur.dinfo = (struct devinfo *)malloc(sizeof(struct devinfo));
121 last.dinfo = (struct devinfo *)malloc(sizeof(struct devinfo));
122 bzero(cur.dinfo, sizeof(struct devinfo));
123 bzero(last.dinfo, sizeof(struct devinfo));
126 * This value for maxshowdevs (100) is bogus. I'm not sure exactly
127 * how to calculate it, though.
129 if (dsinit(100, &cur, &last, NULL) != 1)
138 struct devinfo *tmp_dinfo;
141 len = sizeof(cur.cp_time);
142 if (sysctlbyname("kern.cp_time", &cur.cp_time, &len, NULL, 0)
143 || len != sizeof(cur.cp_time)) {
144 perror("kern.cp_time");
147 tmp_dinfo = last.dinfo;
148 last.dinfo = cur.dinfo;
149 cur.dinfo = tmp_dinfo;
151 last.busy_time = cur.busy_time;
154 * Here what we want to do is refresh our device stats.
155 * getdevs() returns 1 when the device list has changed.
156 * If the device list has changed, we want to go through
157 * the selection process again, in case a device that we
158 * were previously displaying has gone away.
160 switch (devstat_getdevs(NULL, &cur)) {
162 errx(1, "%s", devstat_errbuf);
165 cmdiostat("refresh", NULL);
170 num_devices = cur.dinfo->numdevs;
171 generation = cur.dinfo->generation;
183 wmove(wnd, row, 0); wclrtobot(wnd);
184 mvwaddstr(wnd, row++, INSET,
185 "/0 /10 /20 /30 /40 /50 /60 /70 /80 /90 /100");
186 mvwaddstr(wnd, row++, 0, "cpu user|");
187 mvwaddstr(wnd, row++, 0, " nice|");
188 mvwaddstr(wnd, row++, 0, " system|");
189 mvwaddstr(wnd, row++, 0, "interrupt|");
190 mvwaddstr(wnd, row++, 0, " idle|");
192 row = numlabels(row + 1);
194 row = barlabels(row + 1);
201 int i, _col, regions, ndrives;
205 #define DRIVESPERLINE ((wnd->_maxx - INSET) / COLWIDTH)
206 for (ndrives = 0, i = 0; i < num_devices; i++)
207 if (dev_select[i].selected)
209 regions = howmany(ndrives, DRIVESPERLINE);
211 * Deduct -regions for blank line after each scrolling region.
213 linesperregion = (wnd->_maxy - row - regions) / regions;
215 * Minimum region contains space for two
216 * label lines and one line of statistics.
218 if (linesperregion < 3)
221 for (i = 0; i < num_devices; i++)
222 if (dev_select[i].selected) {
223 if (_col + COLWIDTH >= wnd->_maxx - INSET) {
224 _col = INSET, row += linesperregion + 1;
225 if (row > wnd->_maxy - (linesperregion + 1))
228 sprintf(tmpstr, "%s%d", dev_select[i].device_name,
229 dev_select[i].unit_number);
230 mvwaddstr(wnd, row, _col + 4, tmpstr);
231 mvwaddstr(wnd, row + 1, _col, " KB/t tps MB/s ");
235 row += linesperregion + 1;
246 mvwaddstr(wnd, row++, INSET,
247 "/0 /10 /20 /30 /40 /50 /60 /70 /80 /90 /100");
248 linesperregion = 2 + kbpt;
249 for (i = 0; i < num_devices; i++)
250 if (dev_select[i].selected) {
251 if (row > wnd->_maxy - linesperregion)
253 sprintf(tmpstr, "%s%d", dev_select[i].device_name,
254 dev_select[i].unit_number);
255 mvwprintw(wnd, row++, 0, "%-5.5s MB/s|",
257 mvwaddstr(wnd, row++, 0, " tps|");
259 mvwaddstr(wnd, row++, 0, " KB/t|");
271 #define X(fld) t = cur.fld[i]; cur.fld[i] -= last.fld[i]; last.fld[i] = t
273 for(i = 0; i < CPUSTATES; i++) {
275 etime += cur.cp_time[i];
281 for (i = 0; i < CPUSTATES; i++)
285 for (i = 0; i < num_devices; i++)
286 if (dev_select[i].selected) {
287 if (row > wnd->_maxy - linesperregion)
289 row = devstats(row, INSET, i);
294 wmove(wnd, row + linesperregion, 0);
296 wmove(wnd, row + 3, 0);
298 for (i = 0; i < num_devices; i++)
299 if (dev_select[i].selected) {
300 if (_col + COLWIDTH >= wnd->_maxx - INSET) {
301 _col = INSET, row += linesperregion + 1;
302 if (row > wnd->_maxy - (linesperregion + 1))
304 wmove(wnd, row + linesperregion, 0);
306 wmove(wnd, row + 3, 0);
309 (void) devstats(row + 3, _col, i);
315 devstats(row, _col, dn)
318 long double transfers_per_second;
319 long double kb_per_transfer, mb_per_second;
320 long double busy_seconds;
323 di = dev_select[dn].position;
325 busy_seconds = devstat_compute_etime(cur.busy_time, last.busy_time);
327 if (devstat_compute_statistics(&cur.dinfo->devices[di],
328 &last.dinfo->devices[di], busy_seconds,
329 DSM_KB_PER_TRANSFER, &kb_per_transfer,
330 DSM_TRANSFERS_PER_SECOND, &transfers_per_second,
331 DSM_MB_PER_SECOND, &mb_per_second, DSM_NONE) != 0)
332 errx(1, "%s", devstat_errbuf);
335 mvwprintw(wnd, row, _col, " %5.2Lf %3.0Lf %5.2Lf ",
336 kb_per_transfer, transfers_per_second,
340 wmove(wnd, row++, _col);
341 histogram(mb_per_second, 50, .5);
342 wmove(wnd, row++, _col);
343 histogram(transfers_per_second, 50, .5);
345 wmove(wnd, row++, _col);
346 histogram(kb_per_transfer, 50, .5);
361 for (i = 0; i < CPUSTATES; i++)
362 dtime += cur.cp_time[i];
365 wmove(wnd, row, INSET);
367 histogram(100.0 * cur.cp_time[o] / dtime, 50, CPUSCALE);
371 histogram(val, colwidth, scale)
378 int v = (int)(val * scale) + 0.5;
380 k = MIN(v, colwidth);
382 snprintf(buf, sizeof(buf), "%5.2Lf", val);
396 const char *cmd, *args;
399 if (prefix(cmd, "kbpt"))
401 else if (prefix(cmd, "numbers"))
403 else if (prefix(cmd, "bars"))
405 else if (!dscmd(cmd, args, 100, &cur))