Update README

[wimlib] / README

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                                   WIMLIB                                    
 
-This is wimlib version 1.0.1 (September 2012).  wimlib can be used to read,
+This is wimlib version 1.0.3 (September 2012).  wimlib can be used to read,
 write, and mount files in the Windows Imaging Format (WIM files).  These
 files are normally created by using the `imagex.exe' utility on Windows,
 but this library provides a free implementation of imagex for UNIX-based
@@ -75,6 +75,33 @@ details.
 image of Windows PE that can be put on a CD or USB drive, or published on a
 server for PXE booting.  See the main page `doc/mkwinpeiso.1' for more details.
 
+                              COMPRESSION RATIO
+
+wimlib can create XPRESS or LZX compressed WIM archives.  As of wimlib v1.0.3,
+the XPRESS compression ratio is slightly better than that provided by
+Microsoft's software, while the LZX compression ratio is approaching that of
+Microsoft's software but is not quite there yet.  Running time is as good as or
+better than Microsoft's software.
+
+The following tables compare the compression ratio and performance for creating
+a compressed Windows PE image (disk usage of about 524 MB, uncompressed WIM size
+361 MB):
+
+       Table 1. WIM size
+
+                                       XPRESS Compression      LZX Compression
+       wimlib imagex (v1.0.2):         145,283,871 bytes       139,288,293 bytes
+       wimlib imagex (v1.0.3):         139,288,293 bytes       131,379,869 bytes
+       Microsoft imagex.exe:           140,406,981 bytes       127,249,176 bytes
+
+       Table 2. Time to create WIM
+
+                                       XPRESS Compression      LZX Compression
+       wimlib imagex (v1.0.2):         18 sec                  49 sec
+       wimlib imagex (v1.0.3):         19 sec                  30 sec
+       Microsoft imagex.exe:           25 sec                  89 sec
+
+
                                  DEPENDENCIES
 
 * libxml2
@@ -209,9 +236,8 @@ documentation.
 
 The code in ntfs-apply.c and ntfs-capture.c uses the NTFS-3g library, which is a
 library for reading and writing to NTFS filesystems (the filesystem used by
-recent versions of Windows).  Additionally, the code in ntfs-3g-security.c is
-mostly copied from NTFS-3g, but I'm hoping to get rid of this file eventually.
-See http://www.tuxera.com/community/ntfs-3g-download/ for more information.
+recent versions of Windows).  See
+http://www.tuxera.com/community/ntfs-3g-download/ for more information.
 
 lzx-decomp.c, the code to decompress WIM file resources that are compressed
 using LZX compression, is originally based on code from the cabextract project