- wimlib-imagex (v1.4.0, 2 threads): 18 sec 51 sec
- Microsoft imagex.exe: 25 sec 93 sec
-
-The above LZX values are using the default LZX compressor. wimlib v1.5.2
-introduced a new experimental LZX compressor which can be enabled by passing
-'--compress-slow' to `wimlib-imagex capture' or `wimlib-imagex optimize'. This
-compressor is much slower but compresses the data slightly more --- currently
-usually to within a fraction of a percent of the results from imagex.exe.
+ wimlib-imagex (v1.5.3): 73 sec 202 sec
+ Microsoft imagex.exe (Windows 7): 90 sec 149 sec
+
+The above LZX data are using explicitly specified maximum compression
+('--compress=maximum') as of wimlib v1.5.3. If `wimlib-imagex capture' or
+`wimlib-imagex capture' is instead run with no '--compress' argument, then a
+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) 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.