# time lzma -d debian-m5-v3b.img.ext2.lzma real 35m 33.60s user 3m 34.21s sys 0m 43.21s
# time lzma -d debian-m5-v3b.img.ext2.lzma real 6m 58.61s user 3m 28.24s sys 0m 33.10s
# time lzma -d debian-m5-v3b.img.ext2.lzma real 7m 24.63s user 3m 28.71s sys 0m 33.59s