base sync fix

benchmark-proxy/main.go

@@ -107,14 +107,14 @@ func parseBatchInfo(body []byte) (*BatchInfo, error) {
 	return nil, fmt.Errorf("invalid JSON-RPC request format")
 }
 
-// calculateBatchDelay determines the appropriate delay for a batch request
+// calculateBatchDelay determines the appropriate delay for a batch request for a specific backend
-func calculateBatchDelay(methods []string, probe *SecondaryProbe, stats *StatsCollector) time.Duration {
+func calculateBatchDelay(methods []string, backendName string, probe *SecondaryProbe, stats *StatsCollector) time.Duration {
 	var maxDelay time.Duration
 
 	for _, method := range methods {
 		var delay time.Duration
 		if probe != nil {
-			delay = probe.getDelayForMethod(method)
+			delay = probe.getDelayForBackendAndMethod(backendName, method)
 		} else {
 			delay = stats.GetPrimaryP75ForMethod(method)
 		}
@@ -1138,6 +1138,24 @@ func (sc *StatsCollector) printSummary() {
 			}
 		}
 
+		if len(sc.secondaryProbe.backendTimings) > 0 {
+			fmt.Printf("Backend-Specific Minimum Latencies:\n")
+			// Sort backend names for consistent output
+			var backendNames []string
+			for backend := range sc.secondaryProbe.backendTimings {
+				backendNames = append(backendNames, backend)
+			}
+			sort.Strings(backendNames)
+			for _, backend := range backendNames {
+				timing := sc.secondaryProbe.backendTimings[backend]
+				fmt.Printf("  %s: %s (+ %s buffer = %s)\n",
+					backend,
+					formatDuration(timing),
+					formatDuration(sc.secondaryProbe.minDelayBuffer),
+					formatDuration(timing+sc.secondaryProbe.minDelayBuffer))
+			}
+		}
+
 		if sc.secondaryProbe.failureCount > 0 {
 			fmt.Printf("Probe Failures: %d consecutive\n", sc.secondaryProbe.failureCount)
 		}
@@ -2283,36 +2301,18 @@ func handleRequest(w http.ResponseWriter, r *http.Request, backends []Backend, c
 		requiresPrimaryDueToBlockTag = batchInfo.RequiresPrimary
 	}
 
-	// Get delay threshold for secondary backends
-	var secondaryDelay time.Duration
-	if batchInfo.IsBatch {
-		// For batch requests, use the maximum delay of all methods
-		secondaryDelay = calculateBatchDelay(batchInfo.Methods, secondaryProbe, statsCollector)
-	} else {
-		// For single requests, use method-specific delay
-		method := batchInfo.Methods[0]
-		if secondaryProbe != nil {
-			secondaryDelay = secondaryProbe.getDelayForMethod(method)
-		} else {
-			secondaryDelay = statsCollector.GetPrimaryP75ForMethod(method)
-		}
-	}
-
 	if enableDetailedLogs {
 		if batchInfo.IsBatch {
-			log.Printf("Batch request: %d requests, methods: %s, max delay: %s (probe-based: %v), block tags: %v",
+			log.Printf("Batch request: %d requests, methods: %s, block tags: %v",
-				batchInfo.RequestCount, formatMethodList(batchInfo.Methods),
+				batchInfo.RequestCount, formatMethodList(batchInfo.Methods), batchInfo.BlockTags)
-				secondaryDelay, secondaryProbe != nil, batchInfo.BlockTags)
 		} else {
 			var blockTagInfo string
 			if len(batchInfo.BlockTags) > 0 {
 				blockTagInfo = fmt.Sprintf(", block tag: %s", batchInfo.BlockTags[0])
 			}
-			log.Printf("Method: %s, Secondary delay: %s (probe-based: %v)%s",
+			log.Printf("Method: %s%s", displayMethod, blockTagInfo)
-				displayMethod, secondaryDelay, secondaryProbe != nil, blockTagInfo)
 		}
 	}
-
 	// Process backends with adaptive delay strategy
 	var wg sync.WaitGroup
 	var primaryWg sync.WaitGroup // Separate wait group for primary backend
@@ -2395,7 +2395,23 @@ func handleRequest(w http.ResponseWriter, r *http.Request, backends []Backend, c
 
 			// If this is a secondary backend, wait for p75 delay
 			if b.Role != "primary" {
-				delayTimer := time.NewTimer(secondaryDelay)
+				// Get backend-specific delay
+				var backendSpecificDelay time.Duration
+				if batchInfo.IsBatch {
+					// For batch requests, use the maximum delay of all methods for this backend
+					backendSpecificDelay = calculateBatchDelay(batchInfo.Methods, b.Name, secondaryProbe, statsCollector)
+				} else if secondaryProbe != nil {
+					backendSpecificDelay = secondaryProbe.getDelayForBackendAndMethod(b.Name, displayMethod)
+				} else {
+					// Fallback to method-based delay if no probe
+					backendSpecificDelay = statsCollector.GetPrimaryP75ForMethod(displayMethod)
+				}
+
+				if enableDetailedLogs {
+					log.Printf("Secondary backend %s waiting %s for method %s", b.Name, backendSpecificDelay, displayMethod)
+				}
+
+				delayTimer := time.NewTimer(backendSpecificDelay)
 				select {
 				case <-delayTimer.C:
 					// Timer expired, primary is slow, proceed with secondary request