1 /* -----------------------------------------------------------------------------
2 * $Id: Stats.c,v 1.11 1999/03/04 10:56:51 sof Exp $
4 * (c) The GHC Team, 1998-1999
6 * Statistics and timing-related functions.
8 * ---------------------------------------------------------------------------*/
10 #define NON_POSIX_SOURCE
15 #include "StoragePriv.h"
19 * Ian: For the moment we just want to ignore
23 #ifdef HAVE_SYS_TIMES_H
24 #undef HAVE_SYS_TIMES_H /* <sys/times.h> */
26 #ifdef HAVE_SYS_RESOURCE_H /* <sys/resource.h> */
27 #undef HAVE_SYS_RESOURCE_H
29 #ifdef HAVE_SYS_TIME_H /* <sys/time.h> */
30 #undef HAVE_SYS_TIME_H
32 #ifdef HAVE_SYS_TIMEB_H
33 #undef HAVE_SYS_TIMEB_H /* <sys/timeb.h> */
36 #undef HAVE_UNISTD_H /* <unistd.h> */
50 #endif /* _NEMESIS_OS_ */
59 # ifdef HAVE_SYS_TIMES_H
60 # include <sys/times.h>
64 #ifdef HAVE_SYS_TIME_H
68 #if ! irix_TARGET_OS && ! defined(__MINGW32__)
69 # if defined(HAVE_SYS_RESOURCE_H)
70 # include <sys/resource.h>
74 #ifdef HAVE_SYS_TIMEB_H
75 #include <sys/timeb.h>
87 #define BIG_STRING_LEN 512
89 static double ElapsedTimeStart = 0.0;
90 static double TicksPerSecond = 0.0;
92 static double InitUserTime = 0.0;
93 static double InitElapsedTime = 0.0;
95 static ullong GC_tot_alloc = 0;
96 static ullong GC_tot_copied = 0;
98 static double GC_start_time, GC_tot_time = 0; /* User GC Time */
99 static double GCe_start_time, GCe_tot_time = 0; /* Elapsed GC time */
101 lnat MaxResidency = 0; /* in words; for stats only */
102 lnat ResidencySamples = 0; /* for stats only */
104 static lnat GC_start_faults = 0, GC_end_faults = 0;
106 static double *GC_coll_times;
108 /* ToDo: convert this to use integers? --SDM */
110 /* elapsedtime() -- The current elapsed time in seconds */
113 #define NS_PER_SEC 10000000LL
114 /* Convert FILETIMEs into secs since the Epoch (Jan1-1970) */
115 #define FT2longlong(ll,ft) \
116 (ll)=(ft).dwHighDateTime; \
118 (ll) |= (ft).dwLowDateTime; \
119 (ll) /= (unsigned long long) (NS_PER_SEC / CLOCKS_PER_SEC)
123 /* cygwin32 or mingw32 version */
127 FILETIME creationTime, exitTime, kernelTime, userTime;
128 long long int kT, uT;
131 /* ToDo: pin down elapsed times to just the OS thread(s) that
132 are evaluating/managing Haskell code.
134 if (!GetProcessTimes (GetCurrentProcess(), &creationTime,
135 &exitTime, &kernelTime, &userTime)) {
136 /* Probably on a Win95 box..*/
140 FT2longlong(kT,kernelTime);
141 FT2longlong(uT,userTime);
142 return (((StgDouble)(uT + kT))/TicksPerSecond - ElapsedTimeStart);
150 # if ! (defined(HAVE_TIMES) || defined(HAVE_FTIME))
151 /* We will #ifdef around the fprintf for machines
152 we *know* are unsupported. (WDP 94/05)
154 fprintf(stderr, "NOTE: `elapsedtime' does nothing!\n");
157 # else /* not stumped */
159 /* "ftime" may be nicer, but "times" is more standard;
160 but, on a Sun, if you do not get the SysV one, you are *hosed*...
163 # if defined(HAVE_TIMES) && ! sunos4_TARGET_OS
165 clock_t r = times(&t);
167 return (((double)r)/TicksPerSecond - ElapsedTimeStart);
169 # else /* HAVE_FTIME */
173 return (fabs(t.time + 1e-3*t.millitm - ElapsedTimeStart));
175 # endif /* HAVE_FTIME */
176 # endif /* not stumped */
184 /* ToDo (on NT): better, get this via the performance data
185 that's stored in the registry. */
186 # if !defined(HAVE_GETRUSAGE) || irix_TARGET_OS || defined(_WIN32)
191 getrusage(RUSAGE_SELF, &t);
196 /* ToDo: use gettimeofday on systems that support it (u-sec accuracy) */
203 /* Determine TicksPerSecond ... */
205 ticks = sysconf(_SC_CLK_TCK);
207 fprintf(stderr, "stat_init: bad call to 'sysconf'!\n");
208 stg_exit(EXIT_FAILURE);
210 TicksPerSecond = (double) ticks;
212 /* no "sysconf"; had better guess */
214 TicksPerSecond = (StgDouble) (HZ);
216 #elif defined(CLOCKS_PER_SEC)
217 TicksPerSecond = (StgDouble) (CLOCKS_PER_SEC);
218 #else /* had better guess wildly */
219 /* We will #ifdef around the fprintf for machines
220 we *know* are unsupported. (WDP 94/05)
222 fprintf(stderr, "NOTE: Guessing `TicksPerSecond = 60'!\n");
223 TicksPerSecond = 60.0;
226 ElapsedTimeStart = elapsedtime();
234 FILE *sf = RtsFlags.GcFlags.statsFile;
236 if (RtsFlags.GcFlags.giveStats) {
237 fprintf(sf, " Alloc Collect Live GC GC TOT TOT Page Flts\n");
238 fprintf(sf, " bytes bytes bytes user elap user elap\n");
241 (double *)stgMallocBytes(sizeof(double) * RtsFlags.GcFlags.generations,
243 for (i = 0; i < RtsFlags.GcFlags.generations; i++) {
244 GC_coll_times[i] = 0.0;
252 FILETIME creationTime, exitTime, kernelTime, userTime;
255 /* Convert FILETIMEs into long longs */
257 if (!GetProcessTimes (GetCurrentProcess(), &creationTime,
258 &exitTime, &kernelTime, &userTime)) {
259 /* Probably exec'ing this on a Win95 box..*/
263 FT2longlong(uT,userTime);
264 return (((StgDouble)uT)/TicksPerSecond);
271 # if ! (defined(HAVE_GETRUSAGE) || defined(HAVE_TIMES))
272 /* We will #ifdef around the fprintf for machines
273 we *know* are unsupported. (WDP 94/05)
275 fprintf(stderr, "NOTE: `usertime' does nothing!\n");
278 # else /* not stumped */
280 # if defined(HAVE_TIMES)
284 return(((double)(t.tms_utime))/TicksPerSecond);
286 # else /* HAVE_GETRUSAGE */
289 getrusage(RUSAGE_SELF, &t);
290 return(t.ru_utime.tv_sec + 1e-6*t.ru_utime.tv_usec);
292 # endif /* HAVE_GETRUSAGE */
293 # endif /* not stumped */
295 #endif /* ! _WIN32 */
300 InitUserTime = usertime();
301 InitElapsedTime = elapsedtime();
302 if (InitElapsedTime < 0.0) {
303 InitElapsedTime = 0.0;
307 /* -----------------------------------------------------------------------------
308 Called at the beginning of each GC
309 -------------------------------------------------------------------------- */
311 static nat rub_bell = 0;
316 FILE *sf = RtsFlags.GcFlags.statsFile;
318 nat bell = RtsFlags.GcFlags.ringBell;
322 fprintf(stderr, " GC ");
325 fprintf(stderr, "\007");
330 GC_start_time = usertime();
331 GCe_start_time = elapsedtime();
332 if (RtsFlags.GcFlags.giveStats) {
333 GC_start_faults = pagefaults();
338 /* -----------------------------------------------------------------------------
339 Called at the end of each GC
340 -------------------------------------------------------------------------- */
343 stat_endGC(lnat alloc, lnat collect, lnat live, lnat copied, lnat gen)
345 FILE *sf = RtsFlags.GcFlags.statsFile;
348 double time = usertime();
349 double etime = elapsedtime();
351 if (RtsFlags.GcFlags.giveStats) {
352 nat faults = pagefaults();
354 fprintf(sf, "%9ld %9ld %9ld",
355 alloc*sizeof(W_), collect*sizeof(W_), live*sizeof(W_));
356 fprintf(sf, " %5.2f %5.2f %7.2f %7.2f %4ld %4ld (Gen: %2ld)\n",
357 (time-GC_start_time),
358 (etime-GCe_start_time),
361 faults - GC_start_faults,
362 GC_start_faults - GC_end_faults,
365 GC_end_faults = faults;
369 GC_coll_times[gen] += time-GC_start_time;
371 GC_tot_copied += (ullong) copied;
372 GC_tot_alloc += (ullong) alloc;
373 GC_tot_time += time-GC_start_time;
374 GCe_tot_time += etime-GCe_start_time;
376 if (gen == RtsFlags.GcFlags.generations-1) { /* major GC? */
377 if (live > MaxResidency) {
385 fprintf(stderr, "\b\b\b \b\b\b");
390 /* -----------------------------------------------------------------------------
391 Called at the end of execution
393 NOTE: number of allocations is not entirely accurate: it doesn't
394 take into account the few bytes at the end of the heap that
395 were left unused when the heap-check failed.
396 -------------------------------------------------------------------------- */
401 FILE *sf = RtsFlags.GcFlags.statsFile;
404 char temp[BIG_STRING_LEN];
405 double time = usertime();
406 double etime = elapsedtime();
407 double MutTime, MutElapsedTime;
409 /* avoid divide by zero if time is measured as 0.00 seconds -- SDM */
410 if (time == 0.0) time = 0.0001;
411 if (etime == 0.0) etime = 0.0001;
414 fprintf(sf, "%9ld %9.9s %9.9s",
415 (lnat)alloc*sizeof(W_), "", "");
416 fprintf(sf, " %5.2f %5.2f\n\n", 0.0, 0.0);
418 GC_tot_alloc += alloc;
420 ullong_format_string(GC_tot_alloc*sizeof(W_), temp, rtsTrue/*commas*/);
421 fprintf(sf, "%11s bytes allocated in the heap\n", temp);
423 ullong_format_string(GC_tot_copied*sizeof(W_), temp, rtsTrue/*commas*/);
424 fprintf(sf, "%11s bytes copied during GC\n", temp);
426 if ( ResidencySamples > 0 ) {
427 ullong_format_string(MaxResidency*sizeof(W_), temp, rtsTrue/*commas*/);
428 fprintf(sf, "%11s bytes maximum residency (%ld sample(s))\n",
434 { /* Count garbage collections */
436 for (g = 0; g < RtsFlags.GcFlags.generations; g++) {
437 fprintf(sf, "%11d collections in generation %d (%6.2fs)\n",
438 generations[g].collections, g, GC_coll_times[g]);
441 fprintf(sf,"\n%11ld Mb total memory in use\n\n",
442 mblocks_allocated * MBLOCK_SIZE / (1024 * 1024));
444 MutTime = time - GC_tot_time - InitUserTime;
445 if (MutTime < 0) { MutTime = 0; }
446 MutElapsedTime = etime - GCe_tot_time - InitElapsedTime;
447 if (MutElapsedTime < 0) { MutElapsedTime = 0; } /* sometimes -0.00 */
449 fprintf(sf, " INIT time %6.2fs (%6.2fs elapsed)\n",
450 InitUserTime, InitElapsedTime);
451 fprintf(sf, " MUT time %6.2fs (%6.2fs elapsed)\n",
452 MutTime, MutElapsedTime);
453 fprintf(sf, " GC time %6.2fs (%6.2fs elapsed)\n",
454 GC_tot_time, GCe_tot_time);
455 fprintf(sf, " Total time %6.2fs (%6.2fs elapsed)\n\n",
458 fprintf(sf, " %%GC time %5.1f%% (%.1f%% elapsed)\n\n",
459 GC_tot_time*100./time, GCe_tot_time*100./etime);
461 if (time - GC_tot_time == 0.0)
462 ullong_format_string(0, temp, rtsTrue/*commas*/);
464 ullong_format_string((ullong)(GC_tot_alloc*sizeof(W_)/
465 (time - GC_tot_time)),
466 temp, rtsTrue/*commas*/);
468 fprintf(sf, " Alloc rate %s bytes per MUT second\n\n", temp);
470 fprintf(sf, " Productivity %5.1f%% of total user, %.1f%% of total elapsed\n\n",
471 (time - GC_tot_time - InitUserTime) * 100. / time,
472 (time - GC_tot_time - InitUserTime) * 100. / etime);
478 /* -----------------------------------------------------------------------------
481 Produce some detailed info on the state of the generational GC.
482 -------------------------------------------------------------------------- */
484 stat_describe_gens(void)
486 nat g, s, mut, mut_once, lge, live;
491 fprintf(stderr, " Gen Steps Max Mutable Mut-Once Step Blocks Live Large\n Blocks Closures Closures Objects\n");
493 for (g = 0; g < RtsFlags.GcFlags.generations; g++) {
494 for (m = generations[g].mut_list, mut = 0; m != END_MUT_LIST;
497 for (m = generations[g].mut_once_list, mut_once = 0; m != END_MUT_LIST;
500 fprintf(stderr, "%8d %8d %8d %9d %9d", g, generations[g].n_steps,
501 generations[g].max_blocks, mut, mut_once);
503 for (s = 0; s < generations[g].n_steps; s++) {
504 step = &generations[g].steps[s];
505 for (bd = step->large_objects, lge = 0; bd; bd = bd->link)
508 if (RtsFlags.GcFlags.generations == 1) {
513 for (; bd; bd = bd->link) {
514 live += (bd->free - bd->start) * sizeof(W_);
517 fprintf(stderr,"%46s","");
519 fprintf(stderr,"%6d %8d %8d %8d\n", s, step->n_blocks,
523 fprintf(stderr,"\n");