| 1 | /* authspeed.c,v 3.1 1993/07/06 01:04:54 jbj Exp |
| 2 | * authspeed - figure out how LONG it takes to do an NTP encryption |
| 3 | */ |
| 4 | |
| 5 | #if defined(SYS_HPUX) || defined(SYS_AUX3) || defined(SYS_AUX2) || defined(SOLARIS) || defined(SYS_SVR4) || defined(SYS_PTX) |
| 6 | #define FAKE_RUSAGE |
| 7 | #endif |
| 8 | |
| 9 | #include <stdio.h> |
| 10 | #include <sys/types.h> |
| 11 | #include <sys/time.h> |
| 12 | #include <sys/resource.h> |
| 13 | #ifdef FAKE_RUSAGE |
| 14 | #include <sys/param.h> |
| 15 | #include <sys/times.h> |
| 16 | #endif |
| 17 | |
| 18 | #include "ntp_fp.h" |
| 19 | #include "ntp_stdlib.h" |
| 20 | |
| 21 | #define STREQ(a, b) (*(a) == *(b) && strcmp((a), (b)) == 0) |
| 22 | |
| 23 | #define DEFLOOPS -1 |
| 24 | |
| 25 | #define DEFDELAYLOOPS 20000 |
| 26 | #define DEFCOSTLOOPS 2000 |
| 27 | |
| 28 | char *progname; |
| 29 | int debug; |
| 30 | |
| 31 | struct timeval tstart, tend; |
| 32 | #ifdef FAKE_RUSAGE |
| 33 | struct tms rstart, rend; |
| 34 | #define getrusage(foo, t) times(t) |
| 35 | #define RUSAGE_SELF 0 |
| 36 | #else |
| 37 | struct rusage rstart, rend; |
| 38 | #endif |
| 39 | |
| 40 | l_fp dummy1, dummy2; |
| 41 | U_LONG dummy3; |
| 42 | |
| 43 | U_LONG pkt[15]; |
| 44 | |
| 45 | int totalcost = 0; |
| 46 | double rtime; |
| 47 | double vtime; |
| 48 | |
| 49 | int domd5 = 0; |
| 50 | |
| 51 | static void dodelay P((int)); |
| 52 | static void docheap P((int)); |
| 53 | static void docost P((int)); |
| 54 | static void subtime P((struct timeval *, struct timeval *, double *)); |
| 55 | |
| 56 | /* |
| 57 | * main - parse arguments and handle options |
| 58 | */ |
| 59 | void |
| 60 | main(argc, argv) |
| 61 | int argc; |
| 62 | char *argv[]; |
| 63 | { |
| 64 | int c; |
| 65 | int loops; |
| 66 | int i; |
| 67 | int errflg = 0; |
| 68 | extern int optind; |
| 69 | extern char *optarg; |
| 70 | |
| 71 | progname = argv[0]; |
| 72 | loops = DEFLOOPS; |
| 73 | while ((c = getopt_l(argc, argv, "cdmn:")) != EOF) |
| 74 | switch (c) { |
| 75 | case 'c': |
| 76 | totalcost++; |
| 77 | break; |
| 78 | case 'd': |
| 79 | ++debug; |
| 80 | break; |
| 81 | case 'm': |
| 82 | domd5 = 16; /* offset into list of keys */ |
| 83 | break; |
| 84 | case 'n': |
| 85 | loops = atoi(optarg); |
| 86 | if (loops <= 0) { |
| 87 | (void) fprintf(stderr, |
| 88 | "%s: %s is unlikely to be a useful number of loops\n", |
| 89 | progname, optarg); |
| 90 | errflg++; |
| 91 | } |
| 92 | break; |
| 93 | default: |
| 94 | errflg++; |
| 95 | break; |
| 96 | } |
| 97 | if (errflg || optind == argc) { |
| 98 | (void) fprintf(stderr, |
| 99 | "usage: %s [-d] [-n loops] [ -c ] auth.samplekeys\n", |
| 100 | progname); |
| 101 | exit(2); |
| 102 | } |
| 103 | printf("Compute timing for "); |
| 104 | if (domd5) |
| 105 | printf("MD5"); |
| 106 | else |
| 107 | printf("DES"); |
| 108 | printf(" based authentication.\n"); |
| 109 | |
| 110 | init_auth(); |
| 111 | authreadkeys(argv[optind]); |
| 112 | for (i = 0; i < 16; i++) { |
| 113 | if (!auth_havekey(i + domd5)) { |
| 114 | errflg++; |
| 115 | (void) fprintf(stderr, "%s: key %d missing\n", |
| 116 | progname, i + domd5); |
| 117 | } |
| 118 | } |
| 119 | |
| 120 | if (errflg) { |
| 121 | (void) fprintf(stderr, |
| 122 | "%s: check syslog for errors, or use file with complete set of keys\n", |
| 123 | progname); |
| 124 | exit(1); |
| 125 | } |
| 126 | |
| 127 | if (loops == DEFLOOPS) { |
| 128 | if (totalcost) |
| 129 | loops = DEFCOSTLOOPS; |
| 130 | else |
| 131 | loops = DEFDELAYLOOPS; |
| 132 | } |
| 133 | |
| 134 | dummy1.l_ui = 0x80808080; |
| 135 | dummy1.l_uf = 0xffffff00; |
| 136 | dummy3 = 0x0aaaaaaa; |
| 137 | |
| 138 | for (i = 0; i < 12; i++) |
| 139 | pkt[i] = i * 0x22222; |
| 140 | |
| 141 | if (totalcost) { |
| 142 | if (totalcost > 1) |
| 143 | docheap(loops); |
| 144 | else |
| 145 | docost(loops); |
| 146 | } else { |
| 147 | dodelay(loops); |
| 148 | } |
| 149 | |
| 150 | printf("total real time: %.3f\n", rtime); |
| 151 | printf("total CPU time: %.3f\n", vtime); |
| 152 | if (totalcost) { |
| 153 | printf("real cost (in seconds): %.6f\n", |
| 154 | rtime/(double)loops); |
| 155 | printf("CPU cost (in seconds): %.6f\n", |
| 156 | vtime/(double)loops); |
| 157 | printf("\nThis includes the cost of a decryption plus the\n"); |
| 158 | printf("the cost of an encryption, i.e. the cost to process\n"); |
| 159 | printf("a single authenticated packet.\n"); |
| 160 | } else { |
| 161 | printf("authdelay in the configuration file\n"); |
| 162 | printf("real authentication delay: %.6f\n", |
| 163 | rtime/(double)loops); |
| 164 | printf("authentication delay in CPU time: %.6f\n", |
| 165 | vtime/(double)loops); |
| 166 | printf("\nThe CPU delay is probably the best bet for\n"); |
| 167 | printf("authdelay in the configuration file\n"); |
| 168 | } |
| 169 | exit(0); |
| 170 | } |
| 171 | |
| 172 | |
| 173 | /* |
| 174 | * dodelay - do the delay measurement |
| 175 | */ |
| 176 | static void |
| 177 | dodelay(loops) |
| 178 | int loops; |
| 179 | { |
| 180 | double vtime1, rtime1, vtime2, rtime2; |
| 181 | register int loopcount; |
| 182 | /* |
| 183 | * If we're attempting to compute the cost of an auth2crypt() |
| 184 | * for first compute the total cost, then compute the |
| 185 | * cost of only doing the first step, auth1crypt(). What |
| 186 | * remains is the cost of auth2crypt. |
| 187 | */ |
| 188 | loopcount = loops; |
| 189 | (void) gettimeofday(&tstart, (struct timezone *)0); |
| 190 | (void) getrusage(RUSAGE_SELF, &rstart); |
| 191 | |
| 192 | while (loopcount-- > 0) { |
| 193 | auth1crypt((loops & 0xf) + domd5, pkt, 48); |
| 194 | L_ADDUF(&dummy1, dummy3); |
| 195 | auth2crypt((loops & 0xf) + domd5, pkt, 48); |
| 196 | } |
| 197 | |
| 198 | (void) getrusage(RUSAGE_SELF, &rend); |
| 199 | (void) gettimeofday(&tend, (struct timezone *)0); |
| 200 | |
| 201 | subtime(&tstart, &tend, &rtime1); |
| 202 | #ifdef FAKE_RUSAGE |
| 203 | vtime1 = (rend.tms_utime - rstart.tms_utime) * 1.0 / HZ; |
| 204 | #else |
| 205 | subtime(&rstart.ru_utime, &rend.ru_utime, &vtime1); |
| 206 | #endif |
| 207 | printf("Time for full encryptions is %f rusage %f real\n", vtime1, rtime1); |
| 208 | loopcount = loops; |
| 209 | (void) gettimeofday(&tstart, (struct timezone *)0); |
| 210 | (void) getrusage(RUSAGE_SELF, &rstart); |
| 211 | |
| 212 | while (loopcount-- > 0) { |
| 213 | auth1crypt((loops & 0xf) + domd5, pkt, 48); |
| 214 | } |
| 215 | |
| 216 | (void) getrusage(RUSAGE_SELF, &rend); |
| 217 | (void) gettimeofday(&tend, (struct timezone *)0); |
| 218 | |
| 219 | subtime(&tstart, &tend, &rtime2); |
| 220 | #ifdef FAKE_RUSAGE |
| 221 | vtime2 = (rend.tms_utime - rstart.tms_utime) * 1.0 / HZ; |
| 222 | #else |
| 223 | subtime(&rstart.ru_utime, &rend.ru_utime, &vtime2); |
| 224 | #endif |
| 225 | |
| 226 | printf("Time for auth1crypt is %f rusage %f real\n", vtime2, rtime2); |
| 227 | vtime = vtime1 - vtime2; |
| 228 | rtime = rtime1 - rtime2; |
| 229 | } |
| 230 | |
| 231 | |
| 232 | /* |
| 233 | * docheap - do the cost measurement the cheap way |
| 234 | */ |
| 235 | static void |
| 236 | docheap(loops) |
| 237 | register int loops; |
| 238 | { |
| 239 | |
| 240 | (void) authhavekey(3 + domd5); |
| 241 | |
| 242 | (void) gettimeofday(&tstart, (struct timezone *)0); |
| 243 | (void) getrusage(RUSAGE_SELF, &rstart); |
| 244 | |
| 245 | while (loops-- > 0) { |
| 246 | auth1crypt(3 + domd5, pkt, 48); |
| 247 | L_ADDUF(&dummy1, dummy3); |
| 248 | auth2crypt(3 + domd5, pkt, 48); |
| 249 | (void) authdecrypt(3 + domd5, pkt, 48); |
| 250 | } |
| 251 | |
| 252 | (void) getrusage(RUSAGE_SELF, &rend); |
| 253 | (void) gettimeofday(&tend, (struct timezone *)0); |
| 254 | |
| 255 | subtime(&tstart, &tend, &rtime); |
| 256 | #ifdef FAKE_RUSAGE |
| 257 | vtime = (rend.tms_utime - rstart.tms_utime) * 1.0 / HZ; |
| 258 | #else |
| 259 | subtime(&rstart.ru_utime, &rend.ru_utime, &vtime); |
| 260 | #endif |
| 261 | } |
| 262 | |
| 263 | |
| 264 | /* |
| 265 | * docost - do the cost measurement |
| 266 | */ |
| 267 | static void |
| 268 | docost(loops) |
| 269 | register int loops; |
| 270 | { |
| 271 | |
| 272 | (void) gettimeofday(&tstart, (struct timezone *)0); |
| 273 | (void) getrusage(RUSAGE_SELF, &rstart); |
| 274 | |
| 275 | while (loops-- > 0) { |
| 276 | auth1crypt((loops & 0xf) + domd5, pkt, 48); |
| 277 | L_ADDUF(&dummy1, dummy3); |
| 278 | auth2crypt((loops & 0xf) + domd5, pkt, 48); |
| 279 | (void) authdecrypt(((loops+1) & 0xf) + domd5, pkt, 48); |
| 280 | } |
| 281 | |
| 282 | (void) getrusage(RUSAGE_SELF, &rend); |
| 283 | (void) gettimeofday(&tend, (struct timezone *)0); |
| 284 | |
| 285 | subtime(&tstart, &tend, &rtime); |
| 286 | #ifdef FAKE_RUSAGE |
| 287 | vtime = (rend.tms_utime - rstart.tms_utime) * 1.0 / HZ; |
| 288 | #else |
| 289 | subtime(&rstart.ru_utime, &rend.ru_utime, &vtime); |
| 290 | #endif |
| 291 | } |
| 292 | |
| 293 | |
| 294 | /* |
| 295 | * subtime - subtract two struct timevals, return double result |
| 296 | */ |
| 297 | static void |
| 298 | subtime(tvs, tve, res) |
| 299 | struct timeval *tvs, *tve; |
| 300 | double *res; |
| 301 | { |
| 302 | LONG sec; |
| 303 | LONG usec; |
| 304 | |
| 305 | sec = tve->tv_sec - tvs->tv_sec; |
| 306 | usec = tve->tv_usec - tvs->tv_usec; |
| 307 | |
| 308 | if (usec < 0) { |
| 309 | usec += 1000000; |
| 310 | sec--; |
| 311 | } |
| 312 | |
| 313 | *res = (double)sec + (double)usec/1000000.; |
| 314 | return; |
| 315 | } |