Commit | Line | Data |
---|---|---|
0e22e6c5 | 1 | static char *sccsid = "@(#)iostat.c 4.6 (Berkeley) 81/04/21"; |
be974f30 BJ |
2 | /* |
3 | * iostat | |
4 | */ | |
700789be | 5 | #include <stdio.h> |
be974f30 | 6 | #include <nlist.h> |
700789be MT |
7 | #include <sys/types.h> |
8 | #include <sys/buf.h> | |
9 | #include <sys/ubavar.h> | |
10 | #include <sys/mbavar.h> | |
be974f30 BJ |
11 | #include <sys/dk.h> |
12 | ||
13 | struct nlist nl[] = { | |
14 | { "_dk_busy" }, | |
15 | #define X_DK_BUSY 0 | |
16 | { "_dk_time" }, | |
17 | #define X_DK_TIME 1 | |
18 | { "_dk_xfer" }, | |
19 | #define X_DK_XFER 2 | |
20 | { "_dk_wds" }, | |
21 | #define X_DK_WDS 3 | |
22 | { "_tk_nin" }, | |
23 | #define X_TK_NIN 4 | |
24 | { "_tk_nout" }, | |
25 | #define X_TK_NOUT 5 | |
26 | { "_dk_seek" }, | |
27 | #define X_DK_SEEK 6 | |
28 | { "_cp_time" }, | |
29 | #define X_CP_TIME 7 | |
30 | { "_dk_mspw" }, | |
31 | #define X_DK_MSPW 8 | |
700789be MT |
32 | { "_mbdinit" }, |
33 | #define X_MBDINIT 9 | |
34 | { "_ubdinit" }, | |
35 | #define X_UBDINIT 10 | |
be974f30 BJ |
36 | { 0 }, |
37 | }; | |
700789be MT |
38 | |
39 | char dr_name[DK_NDRIVE][10]; | |
40 | ||
be974f30 BJ |
41 | struct |
42 | { | |
43 | int dk_busy; | |
44 | long cp_time[CPUSTATES]; | |
45 | long dk_time[DK_NDRIVE]; | |
46 | long dk_wds[DK_NDRIVE]; | |
47 | long dk_seek[DK_NDRIVE]; | |
48 | long dk_xfer[DK_NDRIVE]; | |
49 | float dk_mspw[DK_NDRIVE]; | |
50 | long tk_nin; | |
51 | long tk_nout; | |
52 | } s, s1; | |
53 | ||
54 | int mf; | |
55 | double etime; | |
56 | ||
57 | main(argc, argv) | |
58 | char *argv[]; | |
59 | { | |
60 | extern char *ctime(); | |
61 | register i; | |
62 | int iter; | |
63 | double f1, f2; | |
64 | long t; | |
8b6704d4 | 65 | int tohdr = 1; |
be974f30 BJ |
66 | |
67 | nlist("/vmunix", nl); | |
68 | if(nl[X_DK_BUSY].n_type == 0) { | |
69 | printf("dk_busy not found in /vmunix namelist\n"); | |
70 | exit(1); | |
71 | } | |
72 | mf = open("/dev/kmem", 0); | |
73 | if(mf < 0) { | |
74 | printf("cannot open /dev/kmem\n"); | |
75 | exit(1); | |
76 | } | |
77 | iter = 0; | |
78 | while (argc>1&&argv[1][0]=='-') { | |
79 | argc--; | |
80 | argv++; | |
81 | } | |
82 | lseek(mf, (long)nl[X_DK_MSPW].n_value, 0); | |
83 | read(mf, s.dk_mspw, sizeof s.dk_mspw); | |
700789be MT |
84 | for (i = 0; i < DK_NDRIVE; i++) |
85 | sprintf(dr_name[i], "dk%d", i); | |
86 | read_names(); | |
be974f30 BJ |
87 | if(argc > 2) |
88 | iter = atoi(argv[2]); | |
be974f30 | 89 | loop: |
8b6704d4 | 90 | if (--tohdr == 0) { |
700789be | 91 | printf(" tty"); |
8b6704d4 BJ |
92 | for (i = 0; i < DK_NDRIVE; i++) |
93 | if (s.dk_mspw[i] != 0.0) | |
700789be MT |
94 | printf(" %3.3s ", dr_name[i]); |
95 | printf(" cpu\n"); | |
8b6704d4 BJ |
96 | printf(" tin tout"); |
97 | for (i = 0; i < DK_NDRIVE; i++) | |
98 | if (s.dk_mspw[i] != 0.0) | |
99 | printf(" sps tps msps "); | |
100 | printf(" us ni sy id\n"); | |
101 | tohdr = 19; | |
102 | } | |
be974f30 BJ |
103 | lseek(mf, (long)nl[X_DK_BUSY].n_value, 0); |
104 | read(mf, &s.dk_busy, sizeof s.dk_busy); | |
105 | lseek(mf, (long)nl[X_DK_TIME].n_value, 0); | |
106 | read(mf, s.dk_time, sizeof s.dk_time); | |
107 | lseek(mf, (long)nl[X_DK_XFER].n_value, 0); | |
108 | read(mf, s.dk_xfer, sizeof s.dk_xfer); | |
109 | lseek(mf, (long)nl[X_DK_WDS].n_value, 0); | |
110 | read(mf, s.dk_wds, sizeof s.dk_wds); | |
111 | lseek(mf, (long)nl[X_TK_NIN].n_value, 0); | |
112 | read(mf, &s.tk_nin, sizeof s.tk_nin); | |
113 | lseek(mf, (long)nl[X_TK_NOUT].n_value, 0); | |
114 | read(mf, &s.tk_nout, sizeof s.tk_nout); | |
115 | lseek(mf, (long)nl[X_DK_SEEK].n_value, 0); | |
116 | read(mf, s.dk_seek, sizeof s.dk_seek); | |
117 | lseek(mf, (long)nl[X_CP_TIME].n_value, 0); | |
118 | read(mf, s.cp_time, sizeof s.cp_time); | |
119 | lseek(mf, (long)nl[X_DK_MSPW].n_value, 0); | |
120 | read(mf, s.dk_mspw, sizeof s.dk_mspw); | |
121 | for (i = 0; i < DK_NDRIVE; i++) { | |
122 | #define X(fld) t = s.fld[i]; s.fld[i] -= s1.fld[i]; s1.fld[i] = t | |
123 | X(dk_xfer); X(dk_seek); X(dk_wds); X(dk_time); | |
124 | } | |
125 | t = s.tk_nin; s.tk_nin -= s1.tk_nin; s1.tk_nin = t; | |
126 | t = s.tk_nout; s.tk_nout -= s1.tk_nout; s1.tk_nout = t; | |
127 | etime = 0; | |
128 | for(i=0; i<CPUSTATES; i++) { | |
129 | X(cp_time); | |
130 | etime += s.cp_time[i]; | |
131 | } | |
132 | if (etime == 0.0) | |
133 | etime = 1.0; | |
134 | etime /= 60.0; | |
135 | printf("%4.0f%5.0f", s.tk_nin/etime, s.tk_nout/etime); | |
136 | for (i=0; i<DK_NDRIVE; i++) | |
137 | if (s.dk_mspw[i] != 0.0) | |
138 | stats(i); | |
139 | for (i=0; i<CPUSTATES; i++) | |
140 | stat1(i); | |
141 | printf("\n"); | |
142 | contin: | |
143 | --iter; | |
144 | if(iter) | |
145 | if(argc > 1) { | |
146 | sleep(atoi(argv[1])); | |
147 | goto loop; | |
148 | } | |
149 | } | |
150 | ||
151 | stats(dn) | |
152 | { | |
153 | register i; | |
154 | double atime, words, xtime, itime; | |
155 | ||
156 | if (s.dk_mspw[dn] == 0.0) { | |
157 | printf("%4.0f%4.0f%5.1f ", 0.0, 0.0, 0.0); | |
158 | return; | |
159 | } | |
160 | atime = s.dk_time[dn]; | |
161 | atime /= 60.0; | |
162 | words = s.dk_wds[dn]*32.0; /* number of words transferred */ | |
163 | xtime = s.dk_mspw[dn]*words; /* transfer time */ | |
164 | itime = atime - xtime; /* time not transferring */ | |
165 | /* | |
166 | printf("\ndn %d, words %8.2f, atime %6.2f, xtime %6.2f, itime %6.2f\n", | |
167 | dn, words, atime, xtime, itime); | |
168 | */ | |
169 | if (xtime < 0) | |
170 | itime += xtime, xtime = 0; | |
171 | if (itime < 0) | |
172 | xtime += itime, itime = 0; | |
173 | printf("%4.0f", s.dk_seek[dn]/etime); | |
174 | printf("%4.0f", s.dk_xfer[dn]/etime); | |
175 | printf("%5.1f ", | |
176 | s.dk_seek[dn] ? itime*1000./s.dk_seek[dn] : 0.0); | |
177 | /* | |
178 | printf("%4.1f", | |
179 | s.dk_xfer[dn] ? xtime*1000./s.dk_xfer[dn] : 0.0); | |
180 | */ | |
181 | } | |
182 | ||
183 | stat1(o) | |
184 | { | |
185 | register i; | |
186 | double time; | |
187 | ||
188 | time = 0; | |
189 | for(i=0; i<CPUSTATES; i++) | |
190 | time += s.cp_time[i]; | |
191 | if (time == 0.0) | |
192 | time = 1.0; | |
193 | printf("%3.0f", 100*s.cp_time[o]/time); | |
194 | } | |
700789be MT |
195 | |
196 | /* | |
197 | * Read the drive names out of kmem. | |
198 | * ARGH ARGH ARGH ARGH !!!!!!!!!!!! | |
199 | */ | |
200 | ||
201 | #define steal(where, var) lseek(mf, where, 0); read(mf, &var, sizeof var); | |
202 | read_names() | |
203 | { | |
204 | struct mba_device mdev; | |
205 | register struct mba_device *mp; | |
206 | struct mba_driver mdrv; | |
207 | short two_char; | |
208 | char *cp = (char *) &two_char; | |
209 | struct uba_device udev, *up; | |
210 | struct uba_driver udrv; | |
211 | ||
212 | mp = (struct mba_device *) nl[X_MBDINIT].n_value; | |
213 | up = (struct uba_device *) nl[X_UBDINIT].n_value; | |
0e22e6c5 | 214 | if (up == 0) |
700789be MT |
215 | { |
216 | fprintf(stderr, "iostat: Disk init info not in namelist\n"); | |
217 | exit(1); | |
218 | } | |
0e22e6c5 | 219 | if (mp) |
700789be MT |
220 | while(1) |
221 | { | |
222 | steal(mp++, mdev); | |
223 | if (mdev.mi_driver == 0) | |
224 | break; | |
225 | if (mdev.mi_dk < 0 || mdev.mi_alive == 0) | |
226 | continue; | |
227 | steal(mdev.mi_driver, mdrv); | |
228 | steal(mdrv.md_dname, two_char); | |
229 | sprintf(dr_name[mdev.mi_dk], "%c%c%d", cp[0], cp[1], mdev.mi_unit); | |
230 | } | |
231 | while(1) | |
232 | { | |
233 | steal(up++, udev); | |
234 | if (udev.ui_driver == 0) | |
235 | break; | |
236 | if (udev.ui_dk < 0 || udev.ui_alive == 0) | |
237 | continue; | |
238 | steal(udev.ui_driver, udrv); | |
239 | steal(udrv.ud_dname, two_char); | |
240 | sprintf(dr_name[udev.ui_dk], "%c%c%d", cp[0], cp[1], udev.ui_unit); | |
241 | } | |
242 | } |