diff --git a/processor/tailsamplingprocessor/internal/idbatcher/id_batcher_test.go b/processor/tailsamplingprocessor/internal/idbatcher/id_batcher_test.go
index bb0cda216fad..29dd25b125c8 100644
--- a/processor/tailsamplingprocessor/internal/idbatcher/id_batcher_test.go
+++ b/processor/tailsamplingprocessor/internal/idbatcher/id_batcher_test.go
@@ -101,13 +101,19 @@ func concurrencyTest(t *testing.T, numBatches, newBatchesInitialCapacity, batchC
 		}
 	}()
 
-	ids := generateSequentialIds(10000)
+	ids := generateSequentialIds(100000)
 	wg := &sync.WaitGroup{}
+	// Limit the concurrency here to avoid creating too many goroutines and hit
+	// https://github.com/open-telemetry/opentelemetry-collector-contrib/issues/9126
+	concurrencyLimiter := make(chan struct{}, 128)
+	defer close(concurrencyLimiter)
 	for i := 0; i < len(ids); i++ {
 		wg.Add(1)
+		concurrencyLimiter <- struct{}{}
 		go func(id pcommon.TraceID) {
 			batcher.AddToCurrentBatch(id)
 			wg.Done()
+			<-concurrencyLimiter
 		}(ids[i])
 	}
 
diff --git a/processor/tailsamplingprocessor/processor_test.go b/processor/tailsamplingprocessor/processor_test.go
index f5da628dc503..e01aa6497618 100644
--- a/processor/tailsamplingprocessor/processor_test.go
+++ b/processor/tailsamplingprocessor/processor_test.go
@@ -191,7 +191,7 @@ func TestSequentialTraceArrival(t *testing.T) {
 }
 
 func TestConcurrentTraceArrival(t *testing.T) {
-	traceIds, batches := generateIdsAndBatches(128)
+	traceIds, batches := generateIdsAndBatches(2048)
 
 	var wg sync.WaitGroup
 	cfg := Config{
@@ -208,16 +208,24 @@ func TestConcurrentTraceArrival(t *testing.T) {
 		require.NoError(t, tsp.Shutdown(context.Background()))
 	}()
 
+	// Limit the concurrency here to avoid creating too many goroutines and hit
+	// https://github.com/open-telemetry/opentelemetry-collector-contrib/issues/9126
+	concurrencyLimiter := make(chan struct{}, 128)
+	defer close(concurrencyLimiter)
 	for _, batch := range batches {
 		// Add the same traceId twice.
 		wg.Add(2)
+		concurrencyLimiter <- struct{}{}
 		go func(td ptrace.Traces) {
 			require.NoError(t, tsp.ConsumeTraces(context.Background(), td))
 			wg.Done()
+			<-concurrencyLimiter
 		}(batch)
+		concurrencyLimiter <- struct{}{}
 		go func(td ptrace.Traces) {
 			require.NoError(t, tsp.ConsumeTraces(context.Background(), td))
 			wg.Done()
+			<-concurrencyLimiter
 		}(batch)
 	}