projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 31cef89c | 1 | static char *sccsid = "@(#)iostat.c 4.2 (Berkeley) 10/19/80"; |
| be974f30 BJ |
2 | /* |
| 3 | * iostat | |
| 4 | */ | |
| 5 | #include <nlist.h> | |
| 6 | #include <sys/dk.h> | |
| 7 | ||
| 8 | struct nlist nl[] = { | |
| 9 | { "_dk_busy" }, | |
| 10 | #define X_DK_BUSY 0 | |
| 11 | { "_dk_time" }, | |
| 12 | #define X_DK_TIME 1 | |
| 13 | { "_dk_xfer" }, | |
| 14 | #define X_DK_XFER 2 | |
| 15 | { "_dk_wds" }, | |
| 16 | #define X_DK_WDS 3 | |
| 17 | { "_tk_nin" }, | |
| 18 | #define X_TK_NIN 4 | |
| 19 | { "_tk_nout" }, | |
| 20 | #define X_TK_NOUT 5 | |
| 21 | { "_dk_seek" }, | |
| 22 | #define X_DK_SEEK 6 | |
| 23 | { "_cp_time" }, | |
| 24 | #define X_CP_TIME 7 | |
| 25 | { "_dk_mspw" }, | |
| 26 | #define X_DK_MSPW 8 | |
| 27 | { 0 }, | |
| 28 | }; | |
| 29 | struct | |
| 30 | { | |
| 31 | int dk_busy; | |
| 32 | long cp_time[CPUSTATES]; | |
| 33 | long dk_time[DK_NDRIVE]; | |
| 34 | long dk_wds[DK_NDRIVE]; | |
| 35 | long dk_seek[DK_NDRIVE]; | |
| 36 | long dk_xfer[DK_NDRIVE]; | |
| 37 | float dk_mspw[DK_NDRIVE]; | |
| 38 | long tk_nin; | |
| 39 | long tk_nout; | |
| 40 | } s, s1; | |
| 41 | ||
| 42 | int mf; | |
| 43 | double etime; | |
| 44 | ||
| 45 | main(argc, argv) | |
| 46 | char *argv[]; | |
| 47 | { | |
| 48 | extern char *ctime(); | |
| 49 | register i; | |
| 50 | int iter; | |
| 51 | double f1, f2; | |
| 52 | long t; | |
| 8b6704d4 | 53 | int tohdr = 1; |
| be974f30 BJ |
54 | |
| 55 | nlist("/vmunix", nl); | |
| 56 | if(nl[X_DK_BUSY].n_type == 0) { | |
| 57 | printf("dk_busy not found in /vmunix namelist\n"); | |
| 58 | exit(1); | |
| 59 | } | |
| 60 | mf = open("/dev/kmem", 0); | |
| 61 | if(mf < 0) { | |
| 62 | printf("cannot open /dev/kmem\n"); | |
| 63 | exit(1); | |
| 64 | } | |
| 65 | iter = 0; | |
| 66 | while (argc>1&&argv[1][0]=='-') { | |
| 67 | argc--; | |
| 68 | argv++; | |
| 69 | } | |
| 70 | lseek(mf, (long)nl[X_DK_MSPW].n_value, 0); | |
| 71 | read(mf, s.dk_mspw, sizeof s.dk_mspw); | |
| 72 | if(argc > 2) | |
| 73 | iter = atoi(argv[2]); | |
| be974f30 | 74 | loop: |
| 8b6704d4 BJ |
75 | if (--tohdr == 0) { |
| 76 | printf(" TTY"); | |
| 77 | for (i = 0; i < DK_NDRIVE; i++) | |
| 78 | if (s.dk_mspw[i] != 0.0) | |
| 79 | printf(" D%d ", i); | |
| 80 | printf(" CPU\n"); | |
| 81 | printf(" tin tout"); | |
| 82 | for (i = 0; i < DK_NDRIVE; i++) | |
| 83 | if (s.dk_mspw[i] != 0.0) | |
| 84 | printf(" sps tps msps "); | |
| 85 | printf(" us ni sy id\n"); | |
| 86 | tohdr = 19; | |
| 87 | } | |
| be974f30 BJ |
88 | lseek(mf, (long)nl[X_DK_BUSY].n_value, 0); |
| 89 | read(mf, &s.dk_busy, sizeof s.dk_busy); | |
| 90 | lseek(mf, (long)nl[X_DK_TIME].n_value, 0); | |
| 91 | read(mf, s.dk_time, sizeof s.dk_time); | |
| 92 | lseek(mf, (long)nl[X_DK_XFER].n_value, 0); | |
| 93 | read(mf, s.dk_xfer, sizeof s.dk_xfer); | |
| 94 | lseek(mf, (long)nl[X_DK_WDS].n_value, 0); | |
| 95 | read(mf, s.dk_wds, sizeof s.dk_wds); | |
| 96 | lseek(mf, (long)nl[X_TK_NIN].n_value, 0); | |
| 97 | read(mf, &s.tk_nin, sizeof s.tk_nin); | |
| 98 | lseek(mf, (long)nl[X_TK_NOUT].n_value, 0); | |
| 99 | read(mf, &s.tk_nout, sizeof s.tk_nout); | |
| 100 | lseek(mf, (long)nl[X_DK_SEEK].n_value, 0); | |
| 101 | read(mf, s.dk_seek, sizeof s.dk_seek); | |
| 102 | lseek(mf, (long)nl[X_CP_TIME].n_value, 0); | |
| 103 | read(mf, s.cp_time, sizeof s.cp_time); | |
| 104 | lseek(mf, (long)nl[X_DK_MSPW].n_value, 0); | |
| 105 | read(mf, s.dk_mspw, sizeof s.dk_mspw); | |
| 106 | for (i = 0; i < DK_NDRIVE; i++) { | |
| 107 | #define X(fld) t = s.fld[i]; s.fld[i] -= s1.fld[i]; s1.fld[i] = t | |
| 108 | X(dk_xfer); X(dk_seek); X(dk_wds); X(dk_time); | |
| 109 | } | |
| 110 | t = s.tk_nin; s.tk_nin -= s1.tk_nin; s1.tk_nin = t; | |
| 111 | t = s.tk_nout; s.tk_nout -= s1.tk_nout; s1.tk_nout = t; | |
| 112 | etime = 0; | |
| 113 | for(i=0; i<CPUSTATES; i++) { | |
| 114 | X(cp_time); | |
| 115 | etime += s.cp_time[i]; | |
| 116 | } | |
| 117 | if (etime == 0.0) | |
| 118 | etime = 1.0; | |
| 119 | etime /= 60.0; | |
| 120 | printf("%4.0f%5.0f", s.tk_nin/etime, s.tk_nout/etime); | |
| 121 | for (i=0; i<DK_NDRIVE; i++) | |
| 122 | if (s.dk_mspw[i] != 0.0) | |
| 123 | stats(i); | |
| 124 | for (i=0; i<CPUSTATES; i++) | |
| 125 | stat1(i); | |
| 126 | printf("\n"); | |
| 127 | contin: | |
| 128 | --iter; | |
| 129 | if(iter) | |
| 130 | if(argc > 1) { | |
| 131 | sleep(atoi(argv[1])); | |
| 132 | goto loop; | |
| 133 | } | |
| 134 | } | |
| 135 | ||
| 136 | stats(dn) | |
| 137 | { | |
| 138 | register i; | |
| 139 | double atime, words, xtime, itime; | |
| 140 | ||
| 141 | if (s.dk_mspw[dn] == 0.0) { | |
| 142 | printf("%4.0f%4.0f%5.1f ", 0.0, 0.0, 0.0); | |
| 143 | return; | |
| 144 | } | |
| 145 | atime = s.dk_time[dn]; | |
| 146 | atime /= 60.0; | |
| 147 | words = s.dk_wds[dn]*32.0; /* number of words transferred */ | |
| 148 | xtime = s.dk_mspw[dn]*words; /* transfer time */ | |
| 149 | itime = atime - xtime; /* time not transferring */ | |
| 150 | /* | |
| 151 | printf("\ndn %d, words %8.2f, atime %6.2f, xtime %6.2f, itime %6.2f\n", | |
| 152 | dn, words, atime, xtime, itime); | |
| 153 | */ | |
| 154 | if (xtime < 0) | |
| 155 | itime += xtime, xtime = 0; | |
| 156 | if (itime < 0) | |
| 157 | xtime += itime, itime = 0; | |
| 158 | printf("%4.0f", s.dk_seek[dn]/etime); | |
| 159 | printf("%4.0f", s.dk_xfer[dn]/etime); | |
| 160 | printf("%5.1f ", | |
| 161 | s.dk_seek[dn] ? itime*1000./s.dk_seek[dn] : 0.0); | |
| 162 | /* | |
| 163 | printf("%4.1f", | |
| 164 | s.dk_xfer[dn] ? xtime*1000./s.dk_xfer[dn] : 0.0); | |
| 165 | */ | |
| 166 | } | |
| 167 | ||
| 168 | stat1(o) | |
| 169 | { | |
| 170 | register i; | |
| 171 | double time; | |
| 172 | ||
| 173 | time = 0; | |
| 174 | for(i=0; i<CPUSTATES; i++) | |
| 175 | time += s.cp_time[i]; | |
| 176 | if (time == 0.0) | |
| 177 | time = 1.0; | |
| 178 | printf("%3.0f", 100*s.cp_time[o]/time); | |
| 179 | } |