Commit | Line | Data |
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8b38f7fc | 1 | #ifndef lint |
b5eefd1e | 2 | static char sccsid[] = "@(#)iostat.c 1.7 (Berkeley) %G%"; |
8b38f7fc SL |
3 | #endif |
4 | ||
5 | /* | |
6 | * iostat | |
7 | */ | |
8 | #include "systat.h" | |
855ff304 | 9 | #include <sys/param.h> |
8b38f7fc | 10 | #include <sys/buf.h> |
855ff304 KM |
11 | #include <sys/file.h> |
12 | #include <nlist.h> | |
13 | ||
8b38f7fc SL |
14 | WINDOW * |
15 | openiostat() | |
16 | { | |
8b38f7fc | 17 | |
b5eefd1e | 18 | return (subwin(stdscr, LINES-1-5, 0, 5, 0)); |
8b38f7fc SL |
19 | } |
20 | ||
21 | closeiostat(w) | |
855ff304 | 22 | WINDOW *w; |
8b38f7fc SL |
23 | { |
24 | ||
855ff304 KM |
25 | if (w == NULL) |
26 | return; | |
855ff304 KM |
27 | wclear(w); |
28 | wrefresh(w); | |
b5eefd1e | 29 | delwin(w); |
8b38f7fc SL |
30 | } |
31 | ||
32 | static struct nlist nlst[] = { | |
855ff304 KM |
33 | #define X_DK_BUSY 0 |
34 | { "_dk_busy" }, | |
35 | #define X_DK_TIME 1 | |
36 | { "_dk_time" }, | |
37 | #define X_DK_XFER 2 | |
38 | { "_dk_xfer" }, | |
39 | #define X_DK_WDS 3 | |
40 | { "_dk_wds" }, | |
41 | #define X_DK_SEEK 4 | |
42 | { "_dk_seek" }, | |
43 | #define X_CP_TIME 5 | |
44 | { "_cp_time" }, | |
8b38f7fc | 45 | #ifdef vax |
9c0c7319 | 46 | #define X_MBDINIT 6 |
855ff304 | 47 | { "_mbdinit" }, |
9c0c7319 | 48 | #define X_UBDINIT 7 |
855ff304 | 49 | { "_ubdinit" }, |
8b38f7fc | 50 | #endif |
855ff304 | 51 | { "" }, |
8b38f7fc SL |
52 | }; |
53 | ||
855ff304 KM |
54 | static struct { |
55 | int dk_busy; | |
56 | long cp_time[CPUSTATES]; | |
57 | long dk_time[DK_NDRIVE]; | |
58 | long dk_wds[DK_NDRIVE]; | |
59 | long dk_seek[DK_NDRIVE]; | |
60 | long dk_xfer[DK_NDRIVE]; | |
8b38f7fc SL |
61 | } s, s1; |
62 | ||
855ff304 KM |
63 | static int linesperregion; |
64 | static double etime; | |
65 | static int numbers = 0; /* default display bar graphs */ | |
2a68a21a | 66 | static int msps = 0; /* default ms/seek shown */ |
855ff304 | 67 | static int dk_select[DK_NDRIVE]; |
8b38f7fc SL |
68 | |
69 | initiostat() | |
70 | { | |
855ff304 | 71 | register i; |
8b38f7fc | 72 | |
855ff304 KM |
73 | if (nlst[X_DK_BUSY].n_type == 0) { |
74 | nlist("/vmunix", nlst); | |
75 | if (nlst[X_DK_BUSY].n_type == 0) { | |
76 | error("Disk init information isn't in namelist"); | |
77 | return; | |
78 | } | |
79 | } | |
80 | if (ndrives == 0) { | |
855ff304 KM |
81 | for (i = 0; i < DK_NDRIVE; i++) |
82 | if (dk_mspw[i] != 0.0) | |
83 | sprintf(dr_name[i], "dk%d", i), ndrives++; | |
84 | #ifdef vax | |
85 | read_names(nlst[X_MBDINIT].n_value, nlst[X_UBDINIT].n_value); | |
86 | #endif | |
87 | } | |
855ff304 KM |
88 | for (i = 0; i < DK_NDRIVE; i++) |
89 | dk_select[i] = 1; | |
8b38f7fc SL |
90 | } |
91 | ||
92 | fetchiostat() | |
93 | { | |
94 | ||
855ff304 KM |
95 | if (nlst[X_DK_BUSY].n_type == 0) |
96 | return; | |
97 | lseek(kmem, (long)nlst[X_DK_BUSY].n_value, L_SET); | |
98 | read(kmem, &s.dk_busy, sizeof s.dk_busy); | |
99 | lseek(kmem, (long)nlst[X_DK_TIME].n_value, L_SET); | |
100 | read(kmem, s.dk_time, sizeof s.dk_time); | |
101 | lseek(kmem, (long)nlst[X_DK_XFER].n_value, L_SET); | |
102 | read(kmem, s.dk_xfer, sizeof s.dk_xfer); | |
103 | lseek(kmem, (long)nlst[X_DK_WDS].n_value, L_SET); | |
104 | read(kmem, s.dk_wds, sizeof s.dk_wds); | |
105 | lseek(kmem, (long)nlst[X_DK_SEEK].n_value, L_SET); | |
106 | read(kmem, s.dk_seek, sizeof s.dk_seek); | |
107 | lseek(kmem, (long)nlst[X_CP_TIME].n_value, L_SET); | |
108 | read(kmem, s.cp_time, sizeof s.cp_time); | |
8b38f7fc SL |
109 | } |
110 | ||
b5eefd1e SL |
111 | #define INSET 10 |
112 | ||
8b38f7fc SL |
113 | labeliostat() |
114 | { | |
855ff304 | 115 | int row; |
8b38f7fc | 116 | |
855ff304 KM |
117 | if (nlst[X_DK_BUSY].n_type == 0) { |
118 | error("No dk_busy defined."); | |
119 | return; | |
120 | } | |
b5eefd1e SL |
121 | row = 0; |
122 | wmove(wnd, row, 0); wclrtobot(wnd); | |
123 | mvwaddstr(wnd, row++, INSET, | |
959d10ab | 124 | "/0 /10 /20 /30 /40 /50 /60 /70 /80 /90 /100"); |
b5eefd1e SL |
125 | mvwaddstr(wnd, row++, 0, "cpu user|"); |
126 | mvwaddstr(wnd, row++, 0, " nice|"); | |
127 | mvwaddstr(wnd, row++, 0, " system|"); | |
128 | mvwaddstr(wnd, row++, 0, " idle|"); | |
855ff304 KM |
129 | if (numbers) |
130 | row = numlabels(row + 1); | |
131 | else | |
132 | row = barlabels(row + 1); | |
133 | } | |
134 | ||
135 | static | |
136 | numlabels(row) | |
137 | { | |
138 | int i, col, regions; | |
139 | ||
140 | #define COLWIDTH 14 | |
b5eefd1e | 141 | #define DRIVESPERLINE ((wnd->_maxx - INSET) / COLWIDTH) |
855ff304 KM |
142 | regions = howmany(ndrives, DRIVESPERLINE); |
143 | /* | |
144 | * Deduct -regions for blank line after each scrolling region. | |
145 | */ | |
b5eefd1e | 146 | linesperregion = (wnd->_maxy - row - regions) / regions; |
855ff304 KM |
147 | /* |
148 | * Minimum region contains space for two | |
149 | * label lines and one line of statistics. | |
150 | */ | |
151 | if (linesperregion < 3) | |
152 | linesperregion = 3; | |
153 | col = 0; | |
154 | for (i = 0; i < DK_NDRIVE; i++) | |
155 | if (dk_select[i] && dk_mspw[i] != 0.0) { | |
b5eefd1e | 156 | if (col + COLWIDTH >= wnd->_maxx - INSET) { |
855ff304 | 157 | col = 0, row += linesperregion + 1; |
b5eefd1e | 158 | if (row > wnd->_maxy - (linesperregion + 1)) |
855ff304 KM |
159 | break; |
160 | } | |
b5eefd1e SL |
161 | mvwaddstr(wnd, row, col + 4, dr_name[i]); |
162 | mvwaddstr(wnd, row + 1, col, "bps tps msps"); | |
855ff304 KM |
163 | col += COLWIDTH; |
164 | } | |
165 | if (col) | |
166 | row += linesperregion + 1; | |
167 | return (row); | |
168 | } | |
169 | ||
170 | static | |
171 | barlabels(row) | |
172 | int row; | |
173 | { | |
174 | int i; | |
175 | ||
b5eefd1e | 176 | mvwaddstr(wnd, row++, INSET, |
855ff304 KM |
177 | "/0 /5 /10 /15 /20 /25 /30 /35 /40 /45 /50"); |
178 | linesperregion = 2 + msps; | |
179 | for (i = 0; i < DK_NDRIVE; i++) | |
180 | if (dk_select[i] && dk_mspw[i] != 0.0) { | |
b5eefd1e | 181 | if (row > wnd->_maxy - linesperregion) |
855ff304 | 182 | break; |
b5eefd1e SL |
183 | mvwprintw(wnd, row++, 0, "%3.3s bps|", dr_name[i]); |
184 | mvwaddstr(wnd, row++, 0, " tps|"); | |
855ff304 | 185 | if (msps) |
b5eefd1e | 186 | mvwaddstr(wnd, row++, 0, " msps|"); |
855ff304 KM |
187 | } |
188 | return (row); | |
8b38f7fc SL |
189 | } |
190 | ||
191 | showiostat() | |
192 | { | |
855ff304 KM |
193 | register int i, row, col; |
194 | register long t; | |
8b38f7fc | 195 | |
855ff304 KM |
196 | if (nlst[X_DK_BUSY].n_type == 0) |
197 | return; | |
198 | for (i = 0; i < DK_NDRIVE; i++) { | |
199 | #define X(fld) t = s.fld[i]; s.fld[i] -= s1.fld[i]; s1.fld[i] = t | |
200 | X(dk_xfer); X(dk_seek); X(dk_wds); X(dk_time); | |
201 | } | |
202 | etime = 0; | |
203 | for(i = 0; i < CPUSTATES; i++) { | |
204 | X(cp_time); | |
205 | etime += s.cp_time[i]; | |
206 | } | |
207 | if (etime == 0.0) | |
208 | etime = 1.0; | |
209 | etime /= (float) hz; | |
b5eefd1e | 210 | row = 1; |
855ff304 KM |
211 | for (i = 0; i < CPUSTATES; i++) |
212 | stat1(row++, i); | |
213 | if (!numbers) { | |
214 | row += 2; | |
215 | for (i = 0; i < DK_NDRIVE; i++) | |
216 | if (dk_select[i] && dk_mspw[i] != 0.0) { | |
b5eefd1e | 217 | if (row > wnd->_maxy - linesperregion) |
855ff304 | 218 | break; |
b5eefd1e | 219 | row = stats(row, INSET, i); |
855ff304 KM |
220 | } |
221 | return; | |
222 | } | |
223 | col = 0; | |
224 | wmove(wnd, row + linesperregion, 0); | |
225 | wdeleteln(wnd); | |
226 | wmove(wnd, row + 3, 0); | |
227 | winsertln(wnd); | |
228 | for (i = 0; i < DK_NDRIVE; i++) | |
229 | if (dk_select[i] && dk_mspw[i] != 0.0) { | |
b5eefd1e | 230 | if (col + COLWIDTH >= wnd->_maxx) { |
855ff304 | 231 | col = 0, row += linesperregion + 1; |
b5eefd1e | 232 | if (row > wnd->_maxy - (linesperregion + 1)) |
855ff304 KM |
233 | break; |
234 | wmove(wnd, row + linesperregion, 0); | |
235 | wdeleteln(wnd); | |
236 | wmove(wnd, row + 3, 0); | |
237 | winsertln(wnd); | |
238 | } | |
239 | (void) stats(row + 3, col, i); | |
240 | col += COLWIDTH; | |
241 | } | |
8b38f7fc SL |
242 | } |
243 | ||
855ff304 KM |
244 | static |
245 | stats(row, col, dn) | |
246 | int row, dn; | |
8b38f7fc | 247 | { |
855ff304 KM |
248 | register i; |
249 | double atime, words, xtime, itime; | |
8b38f7fc | 250 | |
855ff304 KM |
251 | atime = s.dk_time[dn]; |
252 | atime /= (float) hz; | |
253 | words = s.dk_wds[dn]*32.0; /* number of words transferred */ | |
254 | xtime = dk_mspw[dn]*words; /* transfer time */ | |
255 | itime = atime - xtime; /* time not transferring */ | |
256 | if (xtime < 0) | |
257 | itime += xtime, xtime = 0; | |
258 | if (itime < 0) | |
259 | xtime += itime, itime = 0; | |
260 | if (numbers) { | |
261 | mvwprintw(wnd, row, col, "%3.0f%4.0f%5.1f", | |
262 | words / 512 / etime, s.dk_xfer[dn] / etime, | |
263 | s.dk_seek[dn] ? itime * 1000. / s.dk_seek[dn] : 0.0); | |
264 | return (row); | |
265 | } | |
266 | wmove(wnd, row++, col); | |
267 | histogram(words / 512 / etime, 50, 1.0); | |
268 | wmove(wnd, row++, col); | |
269 | histogram(s.dk_xfer[dn] / etime, 50, 1.0); | |
270 | if (msps) { | |
271 | wmove(wnd, row++, col); | |
272 | histogram(s.dk_seek[dn] ? itime * 1000. / s.dk_seek[dn] : 0, | |
273 | 50, 1.0); | |
274 | } | |
275 | return (row); | |
8b38f7fc SL |
276 | } |
277 | ||
855ff304 | 278 | static |
8b38f7fc | 279 | stat1(row, o) |
855ff304 | 280 | int row, o; |
8b38f7fc | 281 | { |
855ff304 KM |
282 | register i; |
283 | double time; | |
8b38f7fc | 284 | |
855ff304 KM |
285 | time = 0; |
286 | for (i = 0; i < CPUSTATES; i++) | |
287 | time += s.cp_time[i]; | |
288 | if (time == 0.0) | |
289 | time = 1.0; | |
b5eefd1e | 290 | wmove(wnd, row, INSET); |
855ff304 KM |
291 | #define CPUSCALE 0.5 |
292 | histogram(100 * s.cp_time[o] / time, 50, CPUSCALE); | |
8b38f7fc SL |
293 | } |
294 | ||
855ff304 KM |
295 | histogram(val, colwidth, scale) |
296 | double val; | |
297 | int colwidth; | |
298 | double scale; | |
8b38f7fc | 299 | { |
855ff304 KM |
300 | char buf[10]; |
301 | register int k; | |
302 | register int v = (int)(val * scale) + 0.5; | |
8b38f7fc | 303 | |
855ff304 KM |
304 | k = MIN(v, colwidth); |
305 | if (v > colwidth) { | |
306 | sprintf(buf, "%4.1f", val); | |
307 | k -= strlen(buf); | |
308 | while (k--) | |
309 | waddch(wnd, 'X'); | |
310 | waddstr(wnd, buf); | |
311 | return; | |
312 | } | |
313 | while (k--) | |
314 | waddch(wnd, 'X'); | |
315 | wclrtoeol(wnd); | |
8b38f7fc SL |
316 | } |
317 | ||
855ff304 KM |
318 | cmdiostat(cmd, args) |
319 | char *cmd, *args; | |
8b38f7fc | 320 | { |
855ff304 | 321 | int i; |
8b38f7fc | 322 | |
855ff304 KM |
323 | if (prefix(cmd, "msps")) { |
324 | msps = !msps; | |
325 | goto fixdisplay; | |
326 | } | |
327 | if (prefix(cmd, "numbers")) { | |
328 | numbers = 1; | |
329 | goto fixdisplay; | |
330 | } | |
331 | if (prefix(cmd, "bars")) { | |
332 | numbers = 0; | |
333 | goto fixdisplay; | |
334 | } | |
b5eefd1e | 335 | if (prefix(cmd, "display") || prefix(cmd, "add")) { |
855ff304 KM |
336 | dkselect(args, 1, dk_select); |
337 | goto fixdisplay; | |
338 | } | |
b5eefd1e | 339 | if (prefix(cmd, "ignore") || prefix(cmd, "delete")) { |
855ff304 KM |
340 | dkselect(args, 0, dk_select); |
341 | goto fixdisplay; | |
342 | } | |
343 | if (prefix(cmd, "drives")) { | |
344 | move(CMDLINE, 0); | |
345 | for (i = 0; i < DK_NDRIVE; i++) | |
346 | if (dk_mspw[i] != 0.0) | |
347 | printw("%s ", dr_name[i]); | |
348 | return (1); | |
349 | } | |
350 | return (0); | |
351 | fixdisplay: | |
352 | wclear(wnd); | |
855ff304 KM |
353 | labeliostat(); |
354 | refresh(); | |
355 | return (1); | |
8b38f7fc | 356 | } |
8b38f7fc | 357 | |
855ff304 KM |
358 | prefix(s1, s2) |
359 | register char *s1, *s2; | |
8b38f7fc | 360 | { |
8b38f7fc | 361 | |
855ff304 KM |
362 | while (*s1 == *s2) { |
363 | if (*s1 == '\0') | |
364 | return (1); | |
365 | s1++, s2++; | |
366 | } | |
367 | return (*s1 == '\0'); | |
8b38f7fc | 368 | } |