-
+/* -----------------------------------------------------------------------------
+ * (c) The GHC Team 2006
+ *
+ * Initialization and use of the PAPI performance monitoring library
+ *
+ *
+ * For adding events or add your processor counters modify
+ *
+ * init_countable_events
+ * papi_report
+ *
+ * ---------------------------------------------------------------------------*/
+
+
+#ifdef USE_PAPI /* ugly */
#include "Papi.h"
#include "Rts.h"
#include "RtsUtils.h"
#include "Stats.h"
+#include "RtsFlags.h"
-/* These constants specify which events to keep track of.
- * Probably it is better to count one set of events at a time.
- * The reason is that processors have limited counters and
- * multiplexing is not enabled (yet).
- */
-#define PAPI_COUNT_BRANCHES 0
-/* The one below is Opteron specific.
- */
-#define PAPI_COUNT_STALLS 0
-#define PAPI_COUNT_DCACHE1_MISSES 1
-#define PAPI_COUNT_DCACHE2_MISSES 0
-
struct _papi_events {
int event_code;
char * event_name;
};
-#define PAPI_ADD_EVENT(EVENT) { EVENT, #EVENT }
-
-/* Beware, these counters are Opteron specific */
-#define FR_BR 0x40000040
-#define FR_BR_MIS 0x40000041
-#define FR_BR_MISCOMPARE 0x40000048
-#define DC_ACCESS 0x40000019
-#define DC_MISS 0x4000001a
-#define FR_DISPATCH_STALLS_BR 0x40000055
-#define FR_DISPATCH_STALLS_FULL_LS 0x4000005b
+#define PAPI_ADD_EVENT(EVENT) \
+ { \
+ ASSERT(n_papi_events<MAX_PAPI_EVENTS); \
+ papi_events[n_papi_events].event_code = EVENT; \
+ papi_events[n_papi_events].event_name = #EVENT; \
+ n_papi_events++; \
+ }
/* Report the value of a counter */
#define PAPI_REPORT(EVENTSET,EVENT) \
statsPrintf(" (" #EVENT ") %% of (" #EVENTTOT ") : %.1f%%\n", \
papi_counter(EVENTSET,EVENT)*100.0/papi_counter(EVENTSET,EVENTTOT))
+/* Beware, these counters are Opteron specific
+ * I obtained the numbers using the papi_avail
+ * and papi_native_avail utilities.
+ * This is certainly not the official PAPI way
+ * of doing things.
+ */
+#define FR_BR 0x40000040
+#define FR_BR_MIS 0x40000041
+#define FR_BR_MISCOMPARE 0x40000048
+#define DC_ACCESS 0x40000019
+#define DC_MISS 0x4000001a
+#define FR_DISPATCH_STALLS_BR 0x40000055
+#define FR_DISPATCH_STALLS_FULL_LS 0x4000005b
+#define DC_L2_REFILL_MOES 0x40001e1b
+#define DC_SYS_REFILL_MOES 0x40001e1c
+
/* Number of counted events, computed from size of papi_events */
-#define N_PAPI_EVENTS ((int)(sizeof(papi_events)/sizeof(struct _papi_events)))
+#define N_PAPI_EVENTS n_papi_events
/* This is bad, it should be in a header */
#define BIG_STRING_LEN 512
int papi_error;
+/* Arbitrary, to avoid using malloc */
+#define MAX_PAPI_EVENTS 10
+
+int n_papi_events = 0;
-/* If you want to add events to count, extend the
- * papi_events array and the papi_report function.
- */
/* Events counted during GC and Mutator execution */
/* There's a trailing comma, do all C compilers accept that? */
-static struct _papi_events papi_events[] = {
- PAPI_ADD_EVENT(PAPI_TOT_CYC),
-#if PAPI_COUNT_BRANCHES
- PAPI_ADD_EVENT(FR_BR),
- PAPI_ADD_EVENT(FR_BR_MIS),
- /* Docs are wrong? Opteron does not count indirect branch misses apparently */
- PAPI_ADD_EVENT(FR_BR_MISCOMPARE),
-#endif
-#if PAPI_COUNT_STALLS
- PAPI_ADD_EVENT(FR_DISPATCH_STALLS_BR),
- PAPI_ADD_EVENT(FR_DISPATCH_STALLS_FULL_LS),
-#endif
-#if PAPI_COUNT_DCACHE1_MISSES
- PAPI_ADD_EVENT(PAPI_L1_DCA),
- PAPI_ADD_EVENT(PAPI_L1_DCM),
-#endif
-#if PAPI_COUNT_DCACHE2_MISSES
- PAPI_ADD_EVENT(PAPI_L2_DCA),
- PAPI_ADD_EVENT(PAPI_L2_DCM),
-#endif
+static struct _papi_events papi_events[MAX_PAPI_EVENTS];
+long_long MutatorCounters[MAX_PAPI_EVENTS];
+long_long GCCounters[MAX_PAPI_EVENTS];
+
+long_long start_mutator_cycles;
+long_long start_gc_cycles;
+long_long mutator_cycles;
+long_long gc_cycles;
+
+
+
+/* If you want to add events to count, extend the
+ * init_countable_events and the papi_report function.
+ * Be aware that your processor can count a limited number
+ * of events simultaneously, you can turn on multiplexing
+ * to increase that number, though.
+ */
+static void
+init_countable_events(void)
+{
+ PAPI_ADD_EVENT(PAPI_TOT_INS);
+ if(RtsFlags.PapiFlags.eventType==PAPI_FLAG_BRANCH) {
+ PAPI_ADD_EVENT(FR_BR);
+ PAPI_ADD_EVENT(FR_BR_MIS);
+ /* Docs are wrong? Opteron does not count indirect branch misses exclusively */
+ PAPI_ADD_EVENT(FR_BR_MISCOMPARE);
+ }
+ if(RtsFlags.PapiFlags.eventType==PAPI_FLAG_STALLS) {
+ PAPI_ADD_EVENT(FR_DISPATCH_STALLS_BR);
+ PAPI_ADD_EVENT(FR_DISPATCH_STALLS_FULL_LS);
+ }
+ if(RtsFlags.PapiFlags.eventType==PAPI_FLAG_CACHE_L1) {
+ PAPI_ADD_EVENT(PAPI_L1_DCA);
+ PAPI_ADD_EVENT(PAPI_L1_DCM);
+ }
+ if(RtsFlags.PapiFlags.eventType==PAPI_FLAG_CACHE_L2) {
+ PAPI_ADD_EVENT(PAPI_L2_DCA);
+ PAPI_ADD_EVENT(PAPI_L2_DCM);
+ }
+ if(RtsFlags.PapiFlags.eventType==PAPI_FLAG_CB_EVENTS) {
+ PAPI_ADD_EVENT(DC_L2_REFILL_MOES);
+ PAPI_ADD_EVENT(DC_SYS_REFILL_MOES);
+ PAPI_ADD_EVENT(FR_BR_MIS);
+ }
};
-long_long MutatorCounters[N_PAPI_EVENTS];
-long_long GCCounters[N_PAPI_EVENTS];
+static char temp[BIG_STRING_LEN];
+
+void
+papi_mut_cycles()
+{
+ ullong_format_string(mutator_cycles,temp,rtsTrue/*commas*/);
+ statsPrintf(" (MUT_CYCLES) : %s\n",temp);
+}
+
+void
+papi_gc_cycles()
+{
+ ullong_format_string(gc_cycles,temp,rtsTrue/*commas*/);
+ statsPrintf(" (GC_CYCLES) : %s\n",temp);
+}
+
+/* This function reports counters for GC and mutator */
+void
+papi_report(long_long PapiCounters[])
+{
+
+ /* I need to improve formatting aesthetics */
+ PAPI_REPORT(PapiCounters,PAPI_TOT_INS);
+
+ if(RtsFlags.PapiFlags.eventType==PAPI_FLAG_BRANCH) {
+ PAPI_REPORT(PapiCounters,FR_BR);
+ PAPI_REPORT(PapiCounters,FR_BR_MIS);
+ PAPI_REPORT_PCT(PapiCounters,FR_BR_MIS,FR_BR);
+ PAPI_REPORT_PCT(PapiCounters,FR_BR_MISCOMPARE,FR_BR);
+ }
+
+ if(RtsFlags.PapiFlags.eventType==PAPI_FLAG_STALLS) {
+ PAPI_REPORT(PapiCounters,FR_DISPATCH_STALLS_BR);
+ //PAPI_REPORT_PCT(PapiCounters,FR_DISPATCH_STALLS_BR,PAPI_TOT_CYC);
+ PAPI_REPORT(PapiCounters,FR_DISPATCH_STALLS_FULL_LS);
+ //PAPI_REPORT_PCT(PapiCounters,FR_DISPATCH_STALLS_FULL_LS,PAPI_TOT_CYC);
+ }
+
+ if(RtsFlags.PapiFlags.eventType==PAPI_FLAG_CACHE_L1) {
+ PAPI_REPORT(PapiCounters,PAPI_L1_DCA);
+ PAPI_REPORT(PapiCounters,PAPI_L1_DCM);
+ PAPI_REPORT_PCT(PapiCounters,PAPI_L1_DCM,PAPI_L1_DCA);
+ }
+
+ if(RtsFlags.PapiFlags.eventType==PAPI_FLAG_CACHE_L2) {
+ PAPI_REPORT(PapiCounters,PAPI_L2_DCA);
+ PAPI_REPORT(PapiCounters,PAPI_L2_DCM);
+ PAPI_REPORT_PCT(PapiCounters,PAPI_L2_DCM,PAPI_L2_DCA);
+ }
+
+ if(RtsFlags.PapiFlags.eventType==PAPI_FLAG_CB_EVENTS) {
+ PAPI_REPORT(PapiCounters,DC_L2_REFILL_MOES);
+ PAPI_REPORT(PapiCounters,DC_SYS_REFILL_MOES);
+ PAPI_REPORT(PapiCounters,FR_BR_MIS);
+ }
+
+}
+
+
+
+void
+papi_init_eventsets(void)
+{
+
+ init_countable_events();
+
+ /* One event set for the mutator and another for the GC */
+ PAPI_CHECK( PAPI_create_eventset(&MutatorEvents));
+ PAPI_CHECK( PAPI_create_eventset(&GCEvents));
+
+ /* Both sets contain the same events */
+ papi_add_events(MutatorEvents);
+ papi_add_events(GCEvents);
+
+}
/* Extract the value corresponding to an event */
long_long
return 0;
}
-/* This function reports counters for GC and mutator */
-void
-papi_report(long_long PapiCounters[])
-{
- char temp[BIG_STRING_LEN];
-
- /* I need to improve formatting aesthetics */
- PAPI_REPORT(PapiCounters,PAPI_TOT_CYC);
-#if PAPI_COUNT_BRANCHES
- PAPI_REPORT(PapiCounters,FR_BR);
- PAPI_REPORT(PapiCounters,FR_BR_MIS);
- PAPI_REPORT_PCT(PapiCounters,FR_BR_MIS,FR_BR);
- PAPI_REPORT_PCT(PapiCounters,FR_BR_MISCOMPARE,FR_BR);
-#endif
-#if PAPI_COUNT_STALLS
- PAPI_REPORT(PapiCounters,FR_DISPATCH_STALLS_BR);
- PAPI_REPORT_PCT(PapiCounters,FR_DISPATCH_STALLS_BR,PAPI_TOT_CYC);
- PAPI_REPORT(PapiCounters,FR_DISPATCH_STALLS_FULL_LS);
- PAPI_REPORT_PCT(PapiCounters,FR_DISPATCH_STALLS_FULL_LS,PAPI_TOT_CYC);
-#endif
-#if PAPI_COUNT_DCACHE1_MISSES
- PAPI_REPORT(PapiCounters,PAPI_L1_DCA);
- PAPI_REPORT(PapiCounters,PAPI_L1_DCM);
- PAPI_REPORT_PCT(PapiCounters,PAPI_L1_DCM,PAPI_L1_DCA);
-#endif
-#if PAPI_COUNT_DCACHE2_MISSES
- PAPI_REPORT(PapiCounters,PAPI_L2_DCA);
- PAPI_REPORT(PapiCounters,PAPI_L2_DCM);
- PAPI_REPORT_PCT(PapiCounters,PAPI_L2_DCM,PAPI_L2_DCA);
-#endif
-}
-
/* Add the events of papi_events into an event set */
void
papi_add_events(int EventSet)
}
}
-void
-papi_init_eventsets(void)
-{
-
- /* One event set for the mutator and another for the GC */
- PAPI_CHECK( PAPI_create_eventset(&MutatorEvents));
- PAPI_CHECK( PAPI_create_eventset(&GCEvents));
-
- /* Both sets contain the same events */
- papi_add_events(MutatorEvents);
- papi_add_events(GCEvents);
-
-}
+/* We should be using elapsed cycles
+ * to be consistent with time metric chosen in Stats.c (Elapsed time).
+ * This is an approximation to the cycles that the program spends.
+ * Note that the counters, in contrast, are virtual and user space.
+ */
+#define PAPI_cycles PAPI_get_virt_cyc
void
papi_start_mutator_count(void)
{
PAPI_CHECK( PAPI_start(MutatorEvents));
+ start_mutator_cycles = PAPI_cycles();
}
void
papi_stop_mutator_count(void)
{
+ mutator_cycles += PAPI_cycles() - start_mutator_cycles;
PAPI_CHECK( PAPI_accum(MutatorEvents,MutatorCounters));
PAPI_CHECK( PAPI_stop(MutatorEvents,NULL));
}
papi_start_gc_count(void)
{
PAPI_CHECK( PAPI_start(GCEvents));
+ start_gc_cycles = PAPI_cycles();
}
void
papi_stop_gc_count(void)
{
+ gc_cycles += PAPI_cycles() - start_gc_cycles;
PAPI_CHECK( PAPI_accum(GCEvents,GCCounters));
PAPI_CHECK( PAPI_stop(GCEvents,NULL));
}
+
+
+#endif /* USE_PAPI */
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