1 files changed, 4 insertions, 0 deletions
diff --git a/README.md b/README.md
index c8e05ab..955258c 100644
--- a/README.md
+++ b/README.md
@@ -128,6 +128,10 @@ lowmemjson.NewEncoder(&lowmemjson.ReEncoder{
 }).Encode(val)
 ```
 
+`*Encoder` and `*ReEncoder` both tend to make many small writes; if
+writes are syscalls, you may want to wrap their output in a
+`bufio.Writer`.
+
 ### Callee API
 
 For defining Go types with custom JSON representations, `lowmemjson`