MULTIPLE FILE TEST The files in "lha_e138.run" (the distribution archive of LhA 1.38e) were extracted and recompressed with various archivers. Also tested were compressing the complete INCLUDE directory of SAS/C 6.51 (C and ASM header files), and compressing the C directory of SAS/C 6.51 (containing all the compiler's command-line tools). The appropriate commands were used for each archiver in order for it to preserve path names and recurse into subdirectories. For LZX, the "-M5000" option was also used to allow large merged file groups. These results demonstrate that not only is LZX by far the most compressive utility for the Amiga, but that it is, astoundingly, also one of the fastest! [ =================== "LhA 1.38 Distribution Archive" =================== ] Original size: 240262 bytes Program Compressed Compression Decompression size time (s) time (s) ------------ --------------- ------------------ -------------- LZX 1.20r -9 87524 13.52 0.28 LZX 1.20 -3 89024 2.99 0.28 LZX 1.20 -2 89330 2.70 0.28 LZX 1.20 -1 90720 2.32 0.28 Shrink 1.1 97294 8.29 6.80 Zip -9 99905 6.53 0.84 LhA 1.38e -2 102399 3.64 0.38 [ =================== "SAS/C 6.51 Include Directory" ==================== ] Original size: 993828 bytes (361 *.h files) Program Compressed Compression Decompression size time (s) time (s) ------------ --------------- ------------------ -------------- LZX 1.20r -9 258611 81.82 1.20 LZX 1.20 -3 265233 22.74 1.20 LZX 1.20 -2 267633 20.90 1.20 LZX 1.20 -1 271915 19.46 1.20 LhA 1.38e -2 365269 23.35 2.18 Shrink 1.1 368966 40.26 29.16 NOTE: Zip's "-r" option was unable to recurse into all directories and collect only "*.h" files, so Zip has been excluded from this test. [ ====================== "SAS/C 6.51 C Directory" ======================= ] Original size: 1580029 bytes Program Compressed Compression Decompression size time (s) time (s) ------------ --------------- ------------------ -------------- LZX 1.20r -9 717950 72.32 1.95 LZX 1.20 -3 733342 20.33 1.95 LZX 1.20 -2 738318 18.08 1.95 LZX 1.20 -1 751036 16.54 1.97 Shrink 1.1 865286 55.06 61.58 Zip -9 900980 38.20 6.63 LhA 1.38e -2 909071 25.57 2.69