Here is another test. You can use xtool without any precompression too.
Code:
xtool+4x4:lzma
Compressed 7,383 files, 31,661,584,708 => 8,601,282,118 bytes. Ratio 27.17%
Compression time: cpu 16.39 sec/real 1506.53 sec = 1%. Speed 21.02 mB/s
All OK
28min
Code:
srep+4x4:lzma
Compressed 7,383 files, 31,661,584,708 => 8,601,527,510 bytes. Ratio 27.17%
Compression time: cpu 24.27 sec/real 2312.41 sec = 1%. Speed 13.69 mB/s
All OK
38min
Code:
[External compressor:xtool]
header = 0
default = -c64mb -t100p
packcmd = "{compressor}.exe" precomp { -moption} --dbase --dedup=3 - - <stdin> <stdout>
unpackcmd = "{compressor}.exe" decode -t100p - - <stdin> <stdout>