It turns out the one I did not test, was actually the best:
Used: 7z -mx=9 a linux-2.6.16.17.tar.7z linux-2.6.16.17.tar $ du -sk * | sort -n 32392 linux-2.6.16.17.tar.7z 33520 linux-2.6.16.17.tar.lzma 33760 linux-2.6.16.17.tar.rar 38064 linux-2.6.16.17.tar.rz 39472 linux-2.6.16.17.tar.szip 39520 linux-2.6.16.17.tar.bz 39936 linux-2.6.16.17.tar.bz2 40000 linux-2.6.16.17.tar.bicom 40656 linux-2.6.16.17.tar.sit 47664 linux-2.6.16.17.tar.lha 49968 linux-2.6.16.17.tar.dzip 50000 linux-2.6.16.17.tar.gz 51344 linux-2.6.16.17.tar.arj 57552 linux-2.6.16.17.tar.lzo 57984 linux-2.6.16.17.tar.F 81136 linux-2.6.16.17.tar.Z 94544 linux-2.6.16.17.tar.zoo 101216 linux-2.6.16.17.tar.arc 228608 linux-2.6.16.17.tar $ du -sh * | sort -n 32M linux-2.6.16.17.tar.7z 33M linux-2.6.16.17.tar.lzma 33M linux-2.6.16.17.tar.rar 37M linux-2.6.16.17.tar.rz 39M linux-2.6.16.17.tar.bicom 39M linux-2.6.16.17.tar.bz 39M linux-2.6.16.17.tar.bz2 39M linux-2.6.16.17.tar.szip 40M linux-2.6.16.17.tar.sit 47M linux-2.6.16.17.tar.lha 49M linux-2.6.16.17.tar.dzip 49M linux-2.6.16.17.tar.gz 50M linux-2.6.16.17.tar.arj 56M linux-2.6.16.17.tar.lzo 57M linux-2.6.16.17.tar.F 79M linux-2.6.16.17.tar.Z 92M linux-2.6.16.17.tar.zoo 99M linux-2.6.16.17.tar.arc 223M linux-2.6.16.17.tar - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/