#ifdef USE_PAPI /* ugly */
-#include "Papi.h"
+#include <papi.h>
+/* The posix symbols get defined in a header included from papi.h.
+ * undefind them here to allow redefinition in PosixSource.h */
+#undef _POSIX_SOURCE
+#undef _POSIX_C_SOURCE
+#undef _XOPEN_SOURCE
+
+#include "PosixSource.h"
#include "Rts.h"
+
#include "RtsUtils.h"
#include "Stats.h"
-#include "RtsFlags.h"
+#include "Papi.h"
+// used to protect the aggregated counters
+#ifdef THREADED_RTS
+static Mutex papi_counter_mutex;
+#endif
struct _papi_events {
int event_code;
- char * event_name;
+ const char * event_name;
};
-#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) \
- { \
- ullong_format_string(papi_counter(EVENTSET,EVENT),temp,rtsTrue/*commas*/); \
- statsPrintf(" (" #EVENT ") : %s\n",temp); \
- }
-
-/* Report the value of a counter as a percentage of another counter */
-#define PAPI_REPORT_PCT(EVENTSET,EVENT,EVENTTOT) \
- 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.
#define FR_BR_MISCOMPARE 0x40000048
#define DC_ACCESS 0x40000019
#define DC_MISS 0x4000001a
+#define FR_DISPATCH_STALLS 0x40000054
#define FR_DISPATCH_STALLS_BR 0x40000055
+#define FR_DISPATCH_STALLS_FULL_REORDER 0x40000058
+#define FR_DISPATCH_STALLS_FULL_RESERVATION 0x40000059
#define FR_DISPATCH_STALLS_FULL_LS 0x4000005b
-
-/* Number of counted events, computed from size of papi_events */
-#define N_PAPI_EVENTS n_papi_events
+#define DC_L2_REFILL_MOES 0x40001e1b
+#define DC_SYS_REFILL_MOES 0x40001e1c
/* This is bad, it should be in a header */
#define BIG_STRING_LEN 512
+
+#define PAPI_CHECK(CALL) \
+ if((papi_error=(CALL)) != PAPI_OK) { \
+ debugBelch("PAPI function failed in module %s at line %d with error code %d\n", \
+ __FILE__,__LINE__,papi_error); \
+ }
+
/* While PAPI reporting is going on this flag is on */
int papi_is_reporting;
/* Arbitrary, to avoid using malloc */
#define MAX_PAPI_EVENTS 10
+static char papiNativeEventNames[MAX_PAPI_EVENTS][PAPI_MAX_STR_LEN];
-int n_papi_events = 0;
+static nat n_papi_events = 0;
/* Events counted during GC and Mutator execution */
/* There's a trailing comma, do all C compilers accept that? */
static struct _papi_events papi_events[MAX_PAPI_EVENTS];
long_long MutatorCounters[MAX_PAPI_EVENTS];
-long_long GCCounters[MAX_PAPI_EVENTS];
+long_long GC0Counters[MAX_PAPI_EVENTS];
+long_long GC1Counters[MAX_PAPI_EVENTS];
+
+long_long start_mutator_cycles;
+long_long mutator_cycles = 0;
+long_long start_gc_cycles;
+long_long gc0_cycles = 0;
+long_long gc1_cycles = 0;
+
+
+
+static long_long papi_counter(long_long values[],int event);
+static void papi_add_events(int EventSet);
+
+static nat max_hardware_counters = 2;
/* If you want to add events to count, extend the
* init_countable_events and the papi_report function.
* of events simultaneously, you can turn on multiplexing
* to increase that number, though.
*/
+static void papi_add_event(const char *name, int code)
+{
+ if (n_papi_events >= max_hardware_counters) {
+ errorBelch("too many PAPI events for this CPU (max: %d)",
+ max_hardware_counters);
+ stg_exit(EXIT_FAILURE);
+ }
+ papi_events[n_papi_events].event_code = code;
+ papi_events[n_papi_events].event_name = name;
+ n_papi_events++;
+}
+
static void
init_countable_events(void)
{
- PAPI_ADD_EVENT(PAPI_TOT_CYC);
- if(RtsFlags.PapiFlags.eventType==PAPI_FLAG_BRANCH) {
+ max_hardware_counters = PAPI_num_counters();
+
+#define PAPI_ADD_EVENT(EVENT) papi_add_event(#EVENT,EVENT)
+
+ 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) {
+ } else if (RtsFlags.PapiFlags.eventType==PAPI_FLAG_STALLS) {
+ PAPI_ADD_EVENT(FR_DISPATCH_STALLS);
PAPI_ADD_EVENT(FR_DISPATCH_STALLS_BR);
PAPI_ADD_EVENT(FR_DISPATCH_STALLS_FULL_LS);
- }
- if(RtsFlags.PapiFlags.eventType==PAPI_FLAG_CACHE_L1) {
+ } else 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) {
+ } else if (RtsFlags.PapiFlags.eventType==PAPI_FLAG_CACHE_L2) {
PAPI_ADD_EVENT(PAPI_L2_DCA);
PAPI_ADD_EVENT(PAPI_L2_DCM);
+ } else 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);
+ } else if (RtsFlags.PapiFlags.eventType==PAPI_USER_EVENTS) {
+ nat i;
+ char *name;
+ char *asciiEventCode;
+ int code;
+ for (i = 0; i < RtsFlags.PapiFlags.numUserEvents; i++) {
+ if(RtsFlags.PapiFlags.userEventsKind[i] == PAPI_PRESET_EVENT_KIND) {
+ name = RtsFlags.PapiFlags.userEvents[i];
+ PAPI_CHECK(PAPI_event_name_to_code(name, &code))
+ }
+ else { // PAPI_NATIVE_EVENT_KIND
+ asciiEventCode = RtsFlags.PapiFlags.userEvents[i];
+ name = papiNativeEventNames[i];
+ code = strtol(asciiEventCode, NULL, 16 /* hex number expected */);
+ PAPI_CHECK(PAPI_event_code_to_name(code, name))
+ }
+ papi_add_event(name, code);
+ }
+ } else {
+ // PAPI_ADD_EVENT(PAPI_L1_DCA); // L1 data cache accesses
+ // PAPI_ADD_EVENT(PAPI_L1_ICR); // L1 instruction cache reads
+ // PAPI_ADD_EVENT(PAPI_L1_ICM); // L1 instruction cache misses
+ // PAPI_ADD_EVENT(PAPI_L1_STM); // L1 store misses
+ // PAPI_ADD_EVENT(PAPI_L1_DCM); // L1 data cache misses
+ // PAPI_ADD_EVENT(PAPI_L1_LDM); // L1 load misses
+ // PAPI_ADD_EVENT(PAPI_L2_TCM); // L2 cache misses
+ // PAPI_ADD_EVENT(PAPI_L2_STM); // L2 store misses
+ // PAPI_ADD_EVENT(PAPI_L2_DCW); // L2 data cache writes
+ // PAPI_ADD_EVENT(PAPI_L2_DCR); // L2 data cache reads
+ // PAPI_ADD_EVENT(PAPI_L2_TCW); // L2 cache writes
+ // PAPI_ADD_EVENT(PAPI_L2_TCR); // L2 cache reads
+ // PAPI_ADD_EVENT(PAPI_CA_CLN); // exclusive access to clean cache line
+ // PAPI_ADD_EVENT(PAPI_TLB_DM); // TLB misses
+ PAPI_ADD_EVENT(PAPI_TOT_INS); // Total instructions
+ PAPI_ADD_EVENT(PAPI_TOT_CYC); // Total instructions
+ // PAPI_ADD_EVENT(PAPI_CA_SHR); // exclusive access to shared cache line
+ // PAPI_ADD_EVENT(PAPI_RES_STL); // Cycles stalled on any resource
+
}
+
+ // We might also consider:
+ // PAPI_BR_MSP Conditional branch instructions mispredicted
+ // PAPI_RES_STL Cycles stalled on any resource
};
+
+static void
+papi_report_event(const char *name, StgWord64 value)
+{
+ static char temp[BIG_STRING_LEN];
+ showStgWord64(value,temp,rtsTrue/*commas*/);
+ statsPrintf(" %15s %15s\n", name, temp);
+}
+
/* This function reports counters for GC and mutator */
-void
-papi_report(long_long PapiCounters[])
+static void
+papi_report(long_long counters[])
{
- char temp[BIG_STRING_LEN];
+ nat i;
- /* I need to improve formatting aesthetics */
- PAPI_REPORT(PapiCounters,PAPI_TOT_CYC);
+/* Report the value of a counter as a percentage of another counter */
+#define PAPI_REPORT_PCT(EVENTSET,EVENT,EVENTTOT) \
+ statsPrintf(" " #EVENT " %% of " #EVENTTOT " : %.1f%%\n", \
+ papi_counter(EVENTSET,EVENT)*100.0/papi_counter(EVENTSET,EVENTTOT))
- 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);
+ for (i = 0; i < n_papi_events; i++)
+ {
+ papi_report_event(papi_events[i].event_name, counters[i]);
}
- 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_BRANCH) {
+ PAPI_REPORT_PCT(counters,FR_BR_MIS,FR_BR);
+ PAPI_REPORT_PCT(counters,FR_BR_MISCOMPARE,FR_BR);
}
- 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);
+ else if (RtsFlags.PapiFlags.eventType==PAPI_FLAG_CACHE_L1) {
+ PAPI_REPORT_PCT(counters,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);
+ else if (RtsFlags.PapiFlags.eventType==PAPI_FLAG_CACHE_L2) {
+ PAPI_REPORT_PCT(counters,PAPI_L2_DCM,PAPI_L2_DCA);
}
-
}
-
+void
+papi_stats_report (void)
+{
+ statsPrintf(" Mutator CPU counters\n");
+ papi_report_event("CYCLES", mutator_cycles);
+ papi_report(MutatorCounters);
+
+ statsPrintf("\n GC(0) CPU counters\n");
+ papi_report_event("CYCLES", gc0_cycles);
+ papi_report(GC0Counters);
+
+ statsPrintf("\n GC(1) CPU counters\n");
+ papi_report_event("CYCLES", gc1_cycles);
+ papi_report(GC1Counters);
+}
+
+void
+papi_init_eventset (int *event_set)
+{
+ PAPI_register_thread();
+ PAPI_CHECK( PAPI_create_eventset(event_set));
+ papi_add_events(*event_set);
+}
void
-papi_init_eventsets(void)
+papi_init (void)
{
+ /* Initialise the performance tracking library */
+ int ver;
+ if ((ver = PAPI_library_init(PAPI_VER_CURRENT)) != PAPI_VER_CURRENT) {
+ if (ver > 0) {
+ errorBelch("PAPI_library_init: wrong version: %x", ver);
+ stg_exit(EXIT_FAILURE);
+ } else {
+ sysErrorBelch("PAPI_library_init");
+ stg_exit(EXIT_FAILURE);
+ }
+ }
- init_countable_events();
+#ifdef THREADED_RTS
+ {
+ int err;
+ if ((err = PAPI_thread_init(osThreadId)) < 0) {
+ barf("PAPI_thread_init: %d",err);
+ }
- /* One event set for the mutator and another for the GC */
- PAPI_CHECK( PAPI_create_eventset(&MutatorEvents));
- PAPI_CHECK( PAPI_create_eventset(&GCEvents));
+ initMutex(&papi_counter_mutex);
+ }
+#endif
- /* Both sets contain the same events */
- papi_add_events(MutatorEvents);
- papi_add_events(GCEvents);
+ init_countable_events();
+ papi_init_eventset(&MutatorEvents);
+ papi_init_eventset(&GCEvents);
}
/* Extract the value corresponding to an event */
-long_long
+static long_long
papi_counter(long_long values[],int event)
{
- int i;
- for(i=0;i<N_PAPI_EVENTS;i++) {
+ nat i;
+ for(i=0;i<n_papi_events;i++) {
if(papi_events[i].event_code==event) {
return values[i];
}
}
/* Add the events of papi_events into an event set */
-void
+static void
papi_add_events(int EventSet)
{
- int i;
- for(i=0;i<N_PAPI_EVENTS;i++) {
+ nat i;
+ for(i=0;i<n_papi_events;i++) {
if((papi_error=PAPI_add_event(EventSet,
papi_events[i].event_code))
!= PAPI_OK)
}
}
+/* 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)
{
+ ACQUIRE_LOCK(&papi_counter_mutex);
PAPI_CHECK( PAPI_start(MutatorEvents));
+ start_mutator_cycles = PAPI_cycles();
+ RELEASE_LOCK(&papi_counter_mutex);
}
void
papi_stop_mutator_count(void)
{
+ ACQUIRE_LOCK(&papi_counter_mutex);
+ mutator_cycles += PAPI_cycles() - start_mutator_cycles;
PAPI_CHECK( PAPI_accum(MutatorEvents,MutatorCounters));
PAPI_CHECK( PAPI_stop(MutatorEvents,NULL));
+ RELEASE_LOCK(&papi_counter_mutex);
}
void
papi_start_gc_count(void)
{
- PAPI_CHECK( PAPI_start(GCEvents));
+ ACQUIRE_LOCK(&papi_counter_mutex);
+ PAPI_CHECK( PAPI_start(GCEvents));
+ start_gc_cycles = PAPI_cycles();
+ RELEASE_LOCK(&papi_counter_mutex);
+}
+
+void
+papi_stop_gc0_count(void)
+{
+ ACQUIRE_LOCK(&papi_counter_mutex);
+ PAPI_CHECK( PAPI_accum(GCEvents,GC0Counters));
+ PAPI_CHECK( PAPI_stop(GCEvents,NULL));
+ gc0_cycles += PAPI_cycles() - start_gc_cycles;
+ RELEASE_LOCK(&papi_counter_mutex);
+}
+
+
+void
+papi_stop_gc1_count(void)
+{
+ ACQUIRE_LOCK(&papi_counter_mutex);
+ PAPI_CHECK( PAPI_accum(GCEvents,GC1Counters));
+ PAPI_CHECK( PAPI_stop(GCEvents,NULL));
+ gc1_cycles += PAPI_cycles() - start_gc_cycles;
+ RELEASE_LOCK(&papi_counter_mutex);
}
+
void
-papi_stop_gc_count(void)
+papi_thread_start_gc1_count(int event_set)
{
- PAPI_CHECK( PAPI_accum(GCEvents,GCCounters));
- PAPI_CHECK( PAPI_stop(GCEvents,NULL));
+ ACQUIRE_LOCK(&papi_counter_mutex);
+ PAPI_CHECK( PAPI_start(event_set));
+ RELEASE_LOCK(&papi_counter_mutex);
}
+void
+papi_thread_stop_gc1_count(int event_set)
+{
+ ACQUIRE_LOCK(&papi_counter_mutex);
+ PAPI_CHECK( PAPI_accum(event_set,GC1Counters));
+ PAPI_CHECK( PAPI_stop(event_set,NULL));
+ RELEASE_LOCK(&papi_counter_mutex);
+}
#endif /* USE_PAPI */
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