# HG changeset patch
# User Matt Mackall <mpm@selenic.com>
# Date 2012-04-14 02:35:48
# Node ID e5750c6716eb775b296f921b63bb57a4422dd9c0
# Parent  b4b0c6931e11cebae8755555033d7f664106c33d

revlog: increase readahead size

diff --git a/mercurial/revlog.py b/mercurial/revlog.py
--- a/mercurial/revlog.py
+++ b/mercurial/revlog.py
@@ -812,7 +812,7 @@ class revlog(object):
         else:
             df = self.opener(self.datafile)
 
-        readahead = max(65536, length)
+        readahead = max(_chunksize, length)
         df.seek(offset)
         d = df.read(readahead)
         df.close()