X-Git-Url: https://wimlib.net/git/?p=wimlib;a=blobdiff_plain;f=README;h=4ffd1420667a346b4e877e1cc927bdd8acbf8a4e;hp=caf0238df996d1123431f474e1ab98430697be88;hb=bfaa00b42dd66061aea24922b4883b537f8ec665;hpb=14a4edd50c1565b805fd6e456c0ae60621c60e34 diff --git a/README b/README index caf0238d..4ffd1420 100644 --- a/README +++ b/README @@ -1,6 +1,6 @@ WIMLIB -This is wimlib version 1.2.0 (November 2012). wimlib can be used to read, +This is wimlib version 1.2.1 (December 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 systems. @@ -48,12 +48,12 @@ not capture/split/join/append/export/mount a WIM. See `programs/wimapply.c'. 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, especially with multithreaded compression, -available in v1.1.0 and later. +wimlib can create XPRESS or LZX compressed WIM archives. Currently, the 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, especially with multithreaded compression, available in +wimlib v1.1.0 and later. 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 @@ -62,16 +62,13 @@ a compressed Windows PE image (disk usage of about 524 MB, uncompressed WIM size 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 + wimlib imagex (v1.2.1): 138,971,353 bytes 131,379,943 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 - wimlib imagex (v1.1.0, 2 threads): 11 sec 17 sec + wimlib imagex (v1.2.1, 2 threads): 11 sec 17 sec Microsoft imagex.exe: 25 sec 89 sec NTFS SUPPORT