4 ms·

zstd -19 linux.tar 462.58s user 0.76s system 100% cpu 217M memory 7:42.56 total % wc -c linux.tar.zst linux.bz3 134980904 linux.tar.zst 129255792 linux.bz3

• 149764 4y ago
  # compression bzip3 -j 4 -e linux-5.18-rc6.tar linux-5.18-rc6.tar.bz3 user: 345.48s system: 0.59s cpu: 373% total: 1:32.75 zstd -19 --long -T4 -f linux-5.18-rc6.tar user: 1270.48s system: 0.89s cpu: 376% total: 5:37.9 > du -b linux-5.18-rc6.tar.* | sort -rn | reln 1.000000 130907738 linux-5.18-rc6.tar.zst 0.994715 130215881 linux-5.18-rc6.tar.bz3 With additional ‘--ultra -22’ tar.zst is smaller, but the compression time sky rockets. # decompression bzip3 -j 4 -d linux-5.18-rc6.tar.bz3 linux-5.18-rc6.tar user: 222.57s system: 0.92s cpu: 362% total: 1:01.69 bzip3 -d linux-5.18-rc6.tar.bz3 linux-5.18-rc6.tar user: 141.29s system: 0.89s cpu: 99% total: 2:22.19 zstd -d -T4 -f linux-5.18-rc6.tar.zst user: 2.26s system: 0.84s cpu: 99% total: 3.102 zstd doesn’t seem to support parallel decoding, but still 20x faster
  • codewiz 4y ago
    Is reln a command to add a column of relative numbers to the left? Neat.
    • 149764 4y ago
      Yes, a small python script.