diff --git a/weed/command/filer.go b/weed/command/filer.go
index 0f1e63df6..4fd2f9c72 100644
--- a/weed/command/filer.go
+++ b/weed/command/filer.go
@@ -52,6 +52,7 @@ type FilerOptions struct {
 	defaultLevelDbDirectory *string
 	concurrentUploadLimitMB *int
 	debug                   *bool
+	debugPort               *int
 }
 
 func init() {
@@ -75,7 +76,8 @@ func init() {
 	f.saveToFilerLimit = cmdFiler.Flag.Int("saveToFilerLimit", 0, "files smaller than this limit will be saved in filer store")
 	f.defaultLevelDbDirectory = cmdFiler.Flag.String("defaultStoreDir", ".", "if filer.toml is empty, use an embedded filer store in the directory")
 	f.concurrentUploadLimitMB = cmdFiler.Flag.Int("concurrentUploadLimitMB", 128, "limit total concurrent upload size")
-	f.debug = cmdFiler.Flag.Bool("debug", false, "generate full goroutine stack dump http://localhost:6060/debug/pprof/goroutine?debug=2")
+	f.debug = cmdFiler.Flag.Bool("debug", false, "serves runtime profiling data, e.g., http://localhost:<debug.port>/debug/pprof/goroutine?debug=2")
+	f.debugPort = cmdFiler.Flag.Int("debug.port", 6060, "http port for debugging")
 
 	// start s3 on filer
 	filerStartS3 = cmdFiler.Flag.Bool("s3", false, "whether to start S3 gateway")
@@ -126,7 +128,7 @@ var cmdFiler = &Command{
 
 func runFiler(cmd *Command, args []string) bool {
 	if *f.debug {
-		go http.ListenAndServe(":6060", nil)
+		go http.ListenAndServe(fmt.Sprintf(":%d", *f.debugPort), nil)
 	}
 
 	util.LoadConfiguration("security", false)
diff --git a/weed/command/server.go b/weed/command/server.go
index 19fe8607b..9bac2be97 100644
--- a/weed/command/server.go
+++ b/weed/command/server.go
@@ -18,6 +18,7 @@ type ServerOptions struct {
 	cpuprofile *string
 	memprofile *string
 	debug      *bool
+	debugPort  *int
 	v          VolumeServerOptions
 }
 
@@ -80,7 +81,8 @@ var (
 func init() {
 	serverOptions.cpuprofile = cmdServer.Flag.String("cpuprofile", "", "cpu profile output file")
 	serverOptions.memprofile = cmdServer.Flag.String("memprofile", "", "memory profile output file")
-	serverOptions.debug = cmdServer.Flag.Bool("debug", false, "generate full goroutine stack dump http://localhost:6060/debug/pprof/goroutine?debug=2")
+	serverOptions.debug = cmdServer.Flag.Bool("debug", false, "serves runtime profiling data, e.g., http://localhost:6060/debug/pprof/goroutine?debug=2")
+	serverOptions.debugPort = cmdServer.Flag.Int("debug.port", 6060, "http port for debugging")
 
 	masterOptions.port = cmdServer.Flag.Int("master.port", 9333, "master server http listen port")
 	masterOptions.metaFolder = cmdServer.Flag.String("master.dir", "", "data directory to store meta data, default to same as -dir specified")
@@ -143,7 +145,7 @@ func init() {
 func runServer(cmd *Command, args []string) bool {
 
 	if *serverOptions.debug {
-		go http.ListenAndServe(":6060", nil)
+		go http.ListenAndServe(fmt.Sprintf(":%d", *serverOptions.debugPort), nil)
 	}
 
 	util.LoadConfiguration("security", false)