Commit | Line | Data |
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07ed1e09 KM |
1 | /* |
2 | * Copyright (c) 1980 Regents of the University of California. | |
3 | * All rights reserved. The Berkeley software License Agreement | |
4 | * specifies the terms and conditions for redistribution. | |
5 | */ | |
6 | ||
8b38f7fc | 7 | #ifndef lint |
07ed1e09 KM |
8 | static char sccsid[] = "@(#)iostat.c 5.1 (Berkeley) %G%"; |
9 | #endif not lint | |
8b38f7fc SL |
10 | |
11 | /* | |
12 | * iostat | |
13 | */ | |
14 | #include "systat.h" | |
8b38f7fc | 15 | #include <sys/buf.h> |
855ff304 | 16 | |
8b38f7fc SL |
17 | WINDOW * |
18 | openiostat() | |
19 | { | |
8b38f7fc | 20 | |
b5eefd1e | 21 | return (subwin(stdscr, LINES-1-5, 0, 5, 0)); |
8b38f7fc SL |
22 | } |
23 | ||
24 | closeiostat(w) | |
855ff304 | 25 | WINDOW *w; |
8b38f7fc SL |
26 | { |
27 | ||
855ff304 KM |
28 | if (w == NULL) |
29 | return; | |
855ff304 KM |
30 | wclear(w); |
31 | wrefresh(w); | |
b5eefd1e | 32 | delwin(w); |
8b38f7fc SL |
33 | } |
34 | ||
35 | static struct nlist nlst[] = { | |
855ff304 KM |
36 | #define X_DK_BUSY 0 |
37 | { "_dk_busy" }, | |
38 | #define X_DK_TIME 1 | |
39 | { "_dk_time" }, | |
40 | #define X_DK_XFER 2 | |
41 | { "_dk_xfer" }, | |
42 | #define X_DK_WDS 3 | |
43 | { "_dk_wds" }, | |
44 | #define X_DK_SEEK 4 | |
45 | { "_dk_seek" }, | |
46 | #define X_CP_TIME 5 | |
47 | { "_cp_time" }, | |
8b38f7fc | 48 | #ifdef vax |
9c0c7319 | 49 | #define X_MBDINIT 6 |
855ff304 | 50 | { "_mbdinit" }, |
9c0c7319 | 51 | #define X_UBDINIT 7 |
855ff304 | 52 | { "_ubdinit" }, |
8b38f7fc | 53 | #endif |
855ff304 | 54 | { "" }, |
8b38f7fc SL |
55 | }; |
56 | ||
855ff304 KM |
57 | static struct { |
58 | int dk_busy; | |
59 | long cp_time[CPUSTATES]; | |
833d578b SL |
60 | long *dk_time; |
61 | long *dk_wds; | |
62 | long *dk_seek; | |
63 | long *dk_xfer; | |
8b38f7fc SL |
64 | } s, s1; |
65 | ||
855ff304 KM |
66 | static int linesperregion; |
67 | static double etime; | |
68 | static int numbers = 0; /* default display bar graphs */ | |
2a68a21a | 69 | static int msps = 0; /* default ms/seek shown */ |
8b38f7fc SL |
70 | |
71 | initiostat() | |
72 | { | |
855ff304 | 73 | register i; |
8b38f7fc | 74 | |
855ff304 KM |
75 | if (nlst[X_DK_BUSY].n_type == 0) { |
76 | nlist("/vmunix", nlst); | |
77 | if (nlst[X_DK_BUSY].n_type == 0) { | |
78 | error("Disk init information isn't in namelist"); | |
79 | return; | |
80 | } | |
81 | } | |
833d578b SL |
82 | dkinit(); |
83 | if (dk_ndrive) { | |
84 | #define allocate(e, t) \ | |
85 | s./**/e = (t *)calloc(dk_ndrive, sizeof (t)); \ | |
86 | s1./**/e = (t *)calloc(dk_ndrive, sizeof (t)); | |
87 | allocate(dk_time, long); | |
88 | allocate(dk_wds, long); | |
89 | allocate(dk_seek, long); | |
90 | allocate(dk_xfer, long); | |
91 | #undef allocate | |
92 | } | |
8b38f7fc SL |
93 | } |
94 | ||
95 | fetchiostat() | |
96 | { | |
97 | ||
855ff304 KM |
98 | if (nlst[X_DK_BUSY].n_type == 0) |
99 | return; | |
833d578b | 100 | s.dk_busy = getw(nlst[X_DK_BUSY].n_value); |
855ff304 | 101 | lseek(kmem, (long)nlst[X_DK_TIME].n_value, L_SET); |
833d578b | 102 | read(kmem, s.dk_time, dk_ndrive * sizeof (long)); |
855ff304 | 103 | lseek(kmem, (long)nlst[X_DK_XFER].n_value, L_SET); |
833d578b | 104 | read(kmem, s.dk_xfer, dk_ndrive * sizeof (long)); |
855ff304 | 105 | lseek(kmem, (long)nlst[X_DK_WDS].n_value, L_SET); |
833d578b | 106 | read(kmem, s.dk_wds, dk_ndrive * sizeof (long)); |
855ff304 | 107 | lseek(kmem, (long)nlst[X_DK_SEEK].n_value, L_SET); |
833d578b | 108 | read(kmem, s.dk_seek, dk_ndrive * sizeof (long)); |
855ff304 KM |
109 | lseek(kmem, (long)nlst[X_CP_TIME].n_value, L_SET); |
110 | read(kmem, s.cp_time, sizeof s.cp_time); | |
8b38f7fc SL |
111 | } |
112 | ||
b5eefd1e SL |
113 | #define INSET 10 |
114 | ||
8b38f7fc SL |
115 | labeliostat() |
116 | { | |
855ff304 | 117 | int row; |
8b38f7fc | 118 | |
855ff304 KM |
119 | if (nlst[X_DK_BUSY].n_type == 0) { |
120 | error("No dk_busy defined."); | |
121 | return; | |
122 | } | |
b5eefd1e SL |
123 | row = 0; |
124 | wmove(wnd, row, 0); wclrtobot(wnd); | |
125 | mvwaddstr(wnd, row++, INSET, | |
959d10ab | 126 | "/0 /10 /20 /30 /40 /50 /60 /70 /80 /90 /100"); |
b5eefd1e SL |
127 | mvwaddstr(wnd, row++, 0, "cpu user|"); |
128 | mvwaddstr(wnd, row++, 0, " nice|"); | |
129 | mvwaddstr(wnd, row++, 0, " system|"); | |
130 | mvwaddstr(wnd, row++, 0, " idle|"); | |
855ff304 KM |
131 | if (numbers) |
132 | row = numlabels(row + 1); | |
133 | else | |
134 | row = barlabels(row + 1); | |
135 | } | |
136 | ||
137 | static | |
138 | numlabels(row) | |
139 | { | |
833d578b | 140 | int i, col, regions, ndrives; |
855ff304 KM |
141 | |
142 | #define COLWIDTH 14 | |
b5eefd1e | 143 | #define DRIVESPERLINE ((wnd->_maxx - INSET) / COLWIDTH) |
833d578b SL |
144 | for (ndrives = 0, i = 0; i < dk_ndrive; i++) |
145 | if (dk_select[i]) | |
146 | ndrives++; | |
855ff304 KM |
147 | regions = howmany(ndrives, DRIVESPERLINE); |
148 | /* | |
149 | * Deduct -regions for blank line after each scrolling region. | |
150 | */ | |
b5eefd1e | 151 | linesperregion = (wnd->_maxy - row - regions) / regions; |
855ff304 KM |
152 | /* |
153 | * Minimum region contains space for two | |
154 | * label lines and one line of statistics. | |
155 | */ | |
156 | if (linesperregion < 3) | |
157 | linesperregion = 3; | |
158 | col = 0; | |
833d578b | 159 | for (i = 0; i < dk_ndrive; i++) |
855ff304 | 160 | if (dk_select[i] && dk_mspw[i] != 0.0) { |
b5eefd1e | 161 | if (col + COLWIDTH >= wnd->_maxx - INSET) { |
855ff304 | 162 | col = 0, row += linesperregion + 1; |
b5eefd1e | 163 | if (row > wnd->_maxy - (linesperregion + 1)) |
855ff304 KM |
164 | break; |
165 | } | |
b5eefd1e SL |
166 | mvwaddstr(wnd, row, col + 4, dr_name[i]); |
167 | mvwaddstr(wnd, row + 1, col, "bps tps msps"); | |
855ff304 KM |
168 | col += COLWIDTH; |
169 | } | |
170 | if (col) | |
171 | row += linesperregion + 1; | |
172 | return (row); | |
173 | } | |
174 | ||
175 | static | |
176 | barlabels(row) | |
177 | int row; | |
178 | { | |
179 | int i; | |
180 | ||
b5eefd1e | 181 | mvwaddstr(wnd, row++, INSET, |
855ff304 KM |
182 | "/0 /5 /10 /15 /20 /25 /30 /35 /40 /45 /50"); |
183 | linesperregion = 2 + msps; | |
833d578b | 184 | for (i = 0; i < dk_ndrive; i++) |
855ff304 | 185 | if (dk_select[i] && dk_mspw[i] != 0.0) { |
b5eefd1e | 186 | if (row > wnd->_maxy - linesperregion) |
855ff304 | 187 | break; |
b5eefd1e SL |
188 | mvwprintw(wnd, row++, 0, "%3.3s bps|", dr_name[i]); |
189 | mvwaddstr(wnd, row++, 0, " tps|"); | |
855ff304 | 190 | if (msps) |
b5eefd1e | 191 | mvwaddstr(wnd, row++, 0, " msps|"); |
855ff304 KM |
192 | } |
193 | return (row); | |
8b38f7fc SL |
194 | } |
195 | ||
196 | showiostat() | |
197 | { | |
855ff304 KM |
198 | register int i, row, col; |
199 | register long t; | |
8b38f7fc | 200 | |
855ff304 KM |
201 | if (nlst[X_DK_BUSY].n_type == 0) |
202 | return; | |
833d578b | 203 | for (i = 0; i < dk_ndrive; i++) { |
855ff304 KM |
204 | #define X(fld) t = s.fld[i]; s.fld[i] -= s1.fld[i]; s1.fld[i] = t |
205 | X(dk_xfer); X(dk_seek); X(dk_wds); X(dk_time); | |
206 | } | |
207 | etime = 0; | |
208 | for(i = 0; i < CPUSTATES; i++) { | |
209 | X(cp_time); | |
210 | etime += s.cp_time[i]; | |
211 | } | |
212 | if (etime == 0.0) | |
213 | etime = 1.0; | |
214 | etime /= (float) hz; | |
b5eefd1e | 215 | row = 1; |
855ff304 KM |
216 | for (i = 0; i < CPUSTATES; i++) |
217 | stat1(row++, i); | |
218 | if (!numbers) { | |
219 | row += 2; | |
833d578b | 220 | for (i = 0; i < dk_ndrive; i++) |
855ff304 | 221 | if (dk_select[i] && dk_mspw[i] != 0.0) { |
b5eefd1e | 222 | if (row > wnd->_maxy - linesperregion) |
855ff304 | 223 | break; |
b5eefd1e | 224 | row = stats(row, INSET, i); |
855ff304 KM |
225 | } |
226 | return; | |
227 | } | |
228 | col = 0; | |
229 | wmove(wnd, row + linesperregion, 0); | |
230 | wdeleteln(wnd); | |
231 | wmove(wnd, row + 3, 0); | |
232 | winsertln(wnd); | |
833d578b | 233 | for (i = 0; i < dk_ndrive; i++) |
855ff304 | 234 | if (dk_select[i] && dk_mspw[i] != 0.0) { |
b5eefd1e | 235 | if (col + COLWIDTH >= wnd->_maxx) { |
855ff304 | 236 | col = 0, row += linesperregion + 1; |
b5eefd1e | 237 | if (row > wnd->_maxy - (linesperregion + 1)) |
855ff304 KM |
238 | break; |
239 | wmove(wnd, row + linesperregion, 0); | |
240 | wdeleteln(wnd); | |
241 | wmove(wnd, row + 3, 0); | |
242 | winsertln(wnd); | |
243 | } | |
244 | (void) stats(row + 3, col, i); | |
245 | col += COLWIDTH; | |
246 | } | |
8b38f7fc SL |
247 | } |
248 | ||
855ff304 KM |
249 | static |
250 | stats(row, col, dn) | |
251 | int row, dn; | |
8b38f7fc | 252 | { |
855ff304 KM |
253 | register i; |
254 | double atime, words, xtime, itime; | |
8b38f7fc | 255 | |
855ff304 KM |
256 | atime = s.dk_time[dn]; |
257 | atime /= (float) hz; | |
258 | words = s.dk_wds[dn]*32.0; /* number of words transferred */ | |
259 | xtime = dk_mspw[dn]*words; /* transfer time */ | |
260 | itime = atime - xtime; /* time not transferring */ | |
261 | if (xtime < 0) | |
262 | itime += xtime, xtime = 0; | |
263 | if (itime < 0) | |
264 | xtime += itime, itime = 0; | |
265 | if (numbers) { | |
266 | mvwprintw(wnd, row, col, "%3.0f%4.0f%5.1f", | |
267 | words / 512 / etime, s.dk_xfer[dn] / etime, | |
268 | s.dk_seek[dn] ? itime * 1000. / s.dk_seek[dn] : 0.0); | |
269 | return (row); | |
270 | } | |
271 | wmove(wnd, row++, col); | |
272 | histogram(words / 512 / etime, 50, 1.0); | |
273 | wmove(wnd, row++, col); | |
274 | histogram(s.dk_xfer[dn] / etime, 50, 1.0); | |
275 | if (msps) { | |
276 | wmove(wnd, row++, col); | |
277 | histogram(s.dk_seek[dn] ? itime * 1000. / s.dk_seek[dn] : 0, | |
278 | 50, 1.0); | |
279 | } | |
280 | return (row); | |
8b38f7fc SL |
281 | } |
282 | ||
855ff304 | 283 | static |
8b38f7fc | 284 | stat1(row, o) |
855ff304 | 285 | int row, o; |
8b38f7fc | 286 | { |
855ff304 KM |
287 | register i; |
288 | double time; | |
8b38f7fc | 289 | |
855ff304 KM |
290 | time = 0; |
291 | for (i = 0; i < CPUSTATES; i++) | |
292 | time += s.cp_time[i]; | |
293 | if (time == 0.0) | |
294 | time = 1.0; | |
b5eefd1e | 295 | wmove(wnd, row, INSET); |
855ff304 KM |
296 | #define CPUSCALE 0.5 |
297 | histogram(100 * s.cp_time[o] / time, 50, CPUSCALE); | |
8b38f7fc SL |
298 | } |
299 | ||
855ff304 KM |
300 | histogram(val, colwidth, scale) |
301 | double val; | |
302 | int colwidth; | |
303 | double scale; | |
8b38f7fc | 304 | { |
855ff304 KM |
305 | char buf[10]; |
306 | register int k; | |
307 | register int v = (int)(val * scale) + 0.5; | |
8b38f7fc | 308 | |
855ff304 KM |
309 | k = MIN(v, colwidth); |
310 | if (v > colwidth) { | |
311 | sprintf(buf, "%4.1f", val); | |
312 | k -= strlen(buf); | |
313 | while (k--) | |
314 | waddch(wnd, 'X'); | |
315 | waddstr(wnd, buf); | |
316 | return; | |
317 | } | |
318 | while (k--) | |
319 | waddch(wnd, 'X'); | |
320 | wclrtoeol(wnd); | |
8b38f7fc SL |
321 | } |
322 | ||
855ff304 KM |
323 | cmdiostat(cmd, args) |
324 | char *cmd, *args; | |
8b38f7fc | 325 | { |
855ff304 | 326 | int i; |
8b38f7fc | 327 | |
833d578b | 328 | if (prefix(cmd, "msps")) |
855ff304 | 329 | msps = !msps; |
833d578b | 330 | else if (prefix(cmd, "numbers")) |
855ff304 | 331 | numbers = 1; |
833d578b | 332 | else if (prefix(cmd, "bars")) |
855ff304 | 333 | numbers = 0; |
833d578b SL |
334 | else if (!dkcmd(cmd, args)) |
335 | return (0); | |
855ff304 | 336 | wclear(wnd); |
855ff304 KM |
337 | labeliostat(); |
338 | refresh(); | |
339 | return (1); | |
8b38f7fc | 340 | } |