some memory profiling and optimization

cmd/stress/cgr-spansstress/cgr-spansstress.go

@@ -48,15 +48,6 @@ func main() {
 		pprof.StartCPUProfile(f)
 		defer pprof.StopCPUProfile()
 	}
-	if *memprofile != "" {
-		f, err := os.Create(*memprofile)
-		if err != nil {
-			log.Fatal(err)
-		}
-		pprof.WriteHeapProfile(f)
-		f.Close()
-		return
-	}
 	cd := engine.CallDescriptor{
 		TimeStart:    time.Date(2013, time.December, 13, 22, 30, 0, 0, time.UTC),
 		TimeEnd:      time.Date(2013, time.December, 13, 22, 31, 0, 0, time.UTC),
@@ -84,7 +75,18 @@ func main() {
 	j := 0
 	start := time.Now()
 	for i := 0; i < *runs; i++ {
+		runtime.MemProfileRate = 1
 		result, err = cd.GetCost()
+		if *memprofile != "" {
+			runtime.GC()
+			f, err := os.Create(*memprofile)
+			if err != nil {
+				log.Fatal(err)
+			}
+			pprof.WriteHeapProfile(f)
+			f.Close()
+			break
+		}
 		j = i
 	}
 	duration := time.Since(start)

engine/calldesc.go

@@ -266,17 +266,13 @@ func (cd *CallDescriptor) addRatingInfos(ris RatingInfos) bool {
 	return true
 }
 
-/*
-Constructs the key for the storage lookup.
-The prefixLen is limiting the length of the destination prefix.
-*/
+// Constructs the key for the storage lookup.
+// The prefixLen is limiting the length of the destination prefix.
 func (cd *CallDescriptor) GetKey(subject string) string {
 	return fmt.Sprintf("%s:%s:%s:%s", cd.Direction, cd.Tenant, cd.TOR, subject)
 }
 
-/*
-Splits the received timespan into sub time spans according to the activation periods intervals.
-*/
+// Splits the received timespan into sub time spans according to the activation periods intervals.
 func (cd *CallDescriptor) splitInTimeSpans(firstSpan *TimeSpan) (timespans []*TimeSpan) {
 	if firstSpan == nil {
 		firstSpan = &TimeSpan{TimeStart: cd.TimeStart, TimeEnd: cd.TimeEnd, CallDuration: cd.CallDuration}

engine/ratingplan.go

@@ -40,15 +40,16 @@ func (rpr *RPRate) Equal(orpr *RPRate) bool {
 
 type RPRateList []*RPRate
 
-func (rp *RatingPlan) RateIntervalList(dId string) (ril RateIntervalList) {
-	for _, rpr := range rp.DestinationRates[dId] {
-		ril = append(ril, &RateInterval{
+func (rp *RatingPlan) RateIntervalList(dId string) RateIntervalList {
+	ril := make(RateIntervalList, len(rp.DestinationRates[dId]))
+	for i, rpr := range rp.DestinationRates[dId] {
+		ril[i] = &RateInterval{
 			Timing: rp.Timings[rpr.Timing],
 			Rating: rp.Ratings[rpr.Rating],
 			Weight: rpr.Weight,
-		})
+		}
 	}
-	return
+	return ril
 }
 
 /*