INTRODUCTION
-This is wimlib version 1.5.3 (December 2013). wimlib is a C library for
+This is wimlib version 1.6.0 (January 2014). wimlib is a C library for
creating, modifying, extracting, and mounting files in the Windows Imaging
Format (WIM files). These files are normally created using the ImageX
(imagex.exe) or Dism (Dism.exe) utilities on Windows, but wimlib is distributed
COMPRESSION RATIO
-wimlib (and wimlib-imagex) can create XPRESS, LZX, or LZMS compressed WIM archives.
-The following tables compare the compression ratio and performance for creating
-a compressed x86_64 Windows PE image. Note: these timings were done on Windows
-so that the times would be fully comparable; however, wimlib may have even
-better performance on other operating systems such as Linux. Timings were done
-with 2 CPUs available, both of which automatically are used by wimlib for both
-XPRESS and LZX, and also by imagex.exe but apparently only for LZX. Results for
-LZMS compression are excluded because the creation of LZMS compressed WIM
-archives is not yet recommended.
+wimlib (and wimlib-imagex) can create XPRESS, LZX, or LZMS compressed WIM
+archives. The following tables compare the compression ratio and performance
+for creating a compressed x86_64 Windows PE image with XPRESS and LZX. Note:
+these timings were done on Windows so that the times would be fully comparable;
+however, wimlib may have even better performance on other operating systems such
+as Linux. Timings were done with 2 CPUs available, both of which automatically
+are used by wimlib for both XPRESS and LZX, and also by imagex.exe but
+apparently only for LZX.
Table 1. WIM size
faster LZX compressor is used; it will produce results in between those given
for XPRESS and LZX above.
-Note: if the absolute maximum (but still compatible; i.e. not changing the
+Note: if the absolute maximum but still compatible (i.e. not changing the
compression chunk size) LZX compression ratio is desired, `wimlib-imagex
optimize WIMFILE --recompress --compress-slow' on one of the above
LZX-compressed WIMs produces a WIM of 187,089,943 bytes in about 400 seconds.
(https://code.google.com/p/libdivsufsort/) and algorithms from 7-Zip as well as
several published papers.
-lz77.c contains a hash-table-based LZ77 matchfinder that is based on code from
-zlib but has been rewritten. This code is applicable to XPRESS, LZX, and LZMS,
-all of which are partly based on LZ77 compression.
+lz_hash.c contains a hash-table-based LZ77 matchfinder that is based on code
+from zlib but has been rewritten. This code is applicable to XPRESS, LZX, and
+LZMS, all of which are partly based on LZ77 compression.
A limited number of other free programs can handle some parts of the WIM
file format:
git://wimlib.net / wimlib / blobdiff