diff --git a/ChangeLog b/ChangeLog
index b08367f1e..89d8e38e5 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,11 @@
+2005-05-11  Richard Frith-Macdonald <rfm@gnu.org>
+
+	* Source/GSFileHandle.m: Increase size of buffer for incoming data ...
+	on modern systems we have more memory and a bugger buffer can make
+	a significant performance improvement when reading large amounts of
+	streamed data.  New define of READ_SIZE for this buffer ... easily
+	adjusted in one place.
+
 2005-05-10  Richard Frith-Macdonald <rfm@gnu.org>
 
 	* Tools/AGSHtml.h:
diff --git a/Source/GSFileHandle.m b/Source/GSFileHandle.m
index b07bb27e4..899eea846 100644
--- a/Source/GSFileHandle.m
+++ b/Source/GSFileHandle.m
@@ -101,6 +101,7 @@
 
 // Maximum data in single I/O operation
 #define	NETBUF_SIZE	4096
+#define	READ_SIZE	NETBUF_SIZE*10
 
 static GSFileHandle*	fh_stdin = nil;
 static GSFileHandle*	fh_stdout = nil;
@@ -1381,7 +1382,7 @@ NSString * const GSSOCKSRecvAddr = @"GSSOCKSRecvAddr";
 
 - (NSData*) availableData
 {
-  char			buf[NETBUF_SIZE];
+  char			buf[READ_SIZE];
   NSMutableData*	d;
   int			len;
 
@@ -1417,7 +1418,7 @@ NSString * const GSSOCKSRecvAddr = @"GSSOCKSRecvAddr";
 
 - (NSData*) readDataToEndOfFile
 {
-  char			buf[NETBUF_SIZE];
+  char			buf[READ_SIZE];
   NSMutableData*	d;
   int			len;
 
@@ -1467,7 +1468,7 @@ NSString * const GSSOCKSRecvAddr = @"GSSOCKSRecvAddr";
     }
   else
     {
-      char	buf[NETBUF_SIZE];
+      char	buf[READ_SIZE];
 
       d = [NSMutableData dataWithCapacity: 0];
       do
@@ -2151,7 +2152,7 @@ NSString * const GSSOCKSRecvAddr = @"GSSOCKSRecvAddr";
       NSMutableData	*item;
       int		length;
       int		received = 0;
-      char		buf[NETBUF_SIZE];
+      char		buf[READ_SIZE];
 
       item = [readInfo objectForKey: NSFileHandleNotificationDataItem];
       /*