diff --git a/cmd/containerd-shim/main_unix.go b/cmd/containerd-shim/main_unix.go
index 307d44899..f59a96270 100644
--- a/cmd/containerd-shim/main_unix.go
+++ b/cmd/containerd-shim/main_unix.go
@@ -60,7 +60,7 @@ func init() {
 }
 
 func main() {
-	debug.SetGCPercent(10)
+	debug.SetGCPercent(40)
 	go func() {
 		for range time.Tick(30 * time.Second) {
 			debug.FreeOSMemory()
diff --git a/linux/proc/types.go b/linux/proc/types.go
index 42dae5abf..17c78fe9d 100644
--- a/linux/proc/types.go
+++ b/linux/proc/types.go
@@ -4,6 +4,7 @@ import (
 	google_protobuf "github.com/gogo/protobuf/types"
 )
 
+// Mount holds filesystem mount configuration
 type Mount struct {
 	Type    string
 	Source  string