diff --git a/Makefile b/Makefile
index 614ff1e..cd1c5e5 100644
--- a/Makefile
+++ b/Makefile
@@ -2,7 +2,7 @@ SOURCE = emitter.go gor.go gor_stat.go input_dummy.go input_file.go input_raw.go
 SOURCE_PATH = /go/src/github.com/buger/gor/
 PORT = 8000
 FADDR = :8000
-RUN = docker run -v `pwd`:$(SOURCE_PATH) -p 0.0.0.0:$(PORT):$(PORT) -t -i gor:go
+RUN = docker run -v `pwd`:$(SOURCE_PATH) -p 0.0.0.0:$(PORT):$(PORT) -i -t gor
 BENCHMARK = BenchmarkRAWInput
 TEST = TestRawListenerBench
 VERSION = DEV-$(shell date +%s)
@@ -12,6 +12,9 @@ FADDR = ":8000"
 
 release: release-x64 release-mac
 
+release-bin:
+	docker run -v `pwd`:$(SOURCE_PATH) -t --env GOOS=linux --env GOARCH=amd64  -i gor go build -tags netgo $(LDFLAGS)
+
 release-x64:
 	docker run -v `pwd`:$(SOURCE_PATH) -t --env GOOS=linux --env GOARCH=amd64  -i gor go build -tags netgo $(LDFLAGS) && tar -czf gor_$(VERSION)_x64.tar.gz gor && rm gor
 
diff --git a/emitter.go b/emitter.go
index e22595a..5741345 100644
--- a/emitter.go
+++ b/emitter.go
@@ -47,6 +47,8 @@ func CopyMulty(src io.Reader, writers ...io.Writer) (err error) {
 	filteredRequests := make(map[string]time.Time)
 	filteredRequestsLastCleanTime := time.Now()
 
+	i := 0
+
 	for {
 		nr, er := src.Read(buf)
 
@@ -115,17 +117,22 @@ func CopyMulty(src io.Reader, writers ...io.Writer) (err error) {
 			err = er
 			break
 		}
-	}
 
-	// Clean up filtered requests for which we didn't get a response to filter
-	now := time.Now()
-	if now.Sub(filteredRequestsLastCleanTime) > 60 * time.Second {
-		for k, v := range filteredRequests {
-			if now.Sub(v) > 60 * time.Second {
-				delete(filteredRequests, k)
+		// Run GC on each 1000 request
+		if i % 1000 == 0 {
+			// Clean up filtered requests for which we didn't get a response to filter
+			now := time.Now()
+			if now.Sub(filteredRequestsLastCleanTime) > 60 * time.Second {
+				for k, v := range filteredRequests {
+					if now.Sub(v) > 60 * time.Second {
+						delete(filteredRequests, k)
+					}
+				}
+				filteredRequestsLastCleanTime = time.Now()
 			}
 		}
-		filteredRequestsLastCleanTime = time.Now()
+
+		i++
 	}
 
 	return err