updated documentation for fs.createReadStream

Reviewed-By: James M Snell <[email protected]> PR-URL: nodejs/node-v0.x-archive#25591
nodejs · Aug 4, 2015 · 59c67fe · 59c67fe
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diff --git a/doc/api/fs.markdown b/doc/api/fs.markdown
@@ -775,6 +775,10 @@ on Unix systems, it never was.
 
 Returns a new ReadStream object (See `Readable Stream`).
 
+Be aware that, unlike the default value set for `highWaterMark` on a
+readable stream (16kB), the stream returned by this method has a
+default value of 64kB for the same parameter.
+
 `options` is an object with the following defaults:
 
     { flags: 'r',