From 9d72311ba0222b9d0489605b8ec2cec711690993 Mon Sep 17 00:00:00 2001
From: Jesse Glick <jglick@cloudbees.com>
Date: Tue, 21 May 2013 17:42:50 -0400
Subject: [PATCH] [JENKINS-16301] Use a buffered input stream to get somewhat
 better performance.

---
 core/src/main/java/hudson/FilePath.java | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/core/src/main/java/hudson/FilePath.java b/core/src/main/java/hudson/FilePath.java
index 3dabd48108..cee15b41a7 100644
--- a/core/src/main/java/hudson/FilePath.java
+++ b/core/src/main/java/hudson/FilePath.java
@@ -97,6 +97,7 @@ import java.util.zip.GZIPInputStream;
 
 import com.sun.jna.Native;
 import hudson.os.PosixException;
+import java.io.BufferedInputStream;
 import java.util.Enumeration;
 import java.util.logging.Logger;
 import org.apache.tools.ant.taskdefs.Chmod;
@@ -1663,7 +1664,7 @@ public final class FilePath implements Serializable {
         return act(new FileCallable<String>() {
             private static final long serialVersionUID = 1L;
             public String invoke(File f, VirtualChannel channel) throws IOException {
-                return Util.getDigestOf(new FileInputStream(f));
+                return Util.getDigestOf(new BufferedInputStream(new FileInputStream(f)));
             }
         });
     }
-- 
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