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README.md

Benchmarks

The benchmarks take several hours to run and create hundreds of millions of files. Run at your own risk. :)

Setup

Run all commands in the root of this repository.

cargo install hyperfine ftzz
cargo b --workspace --release
mkdir benches /tmp/empty

My environment

  • Linux: 5.14.0-162.18.1.el9_1.x86_64
  • CPU: Intel i7-7700
  • Memory: 15GiB
  • /dev/sda6 /tmp xfs rw,nosuid,nodev,relatime,attr2,inode64,logbufs=8,logbsize=32k,noquota 0 0

The macOS/Windows implementations are currently equivalent to the *_rayon implementations shown in the benchmarks.

Remove

Run

for num_bytes in {0,1G}; do
  for num_files in {10,10_000,100_000,1M}; do
    hyperfine --warmup 3 -N \
      --export-markdown "benches/remove_${num_files}_files_${num_bytes}_bytes.md" \
      --export-json "benches/remove_${num_files}_files_${num_bytes}_bytes.json" \
      --prepare "ftzz g -n ${num_files} -b ${num_bytes} /tmp/ftzz" \
        "rm -r /tmp/ftzz" \
        "find /tmp/ftzz -delete" \
        "rsync --delete -r /tmp/empty/ /tmp/ftzz" \
        "./target/release/rm_stdlib /tmp/ftzz" \
        "./target/release/rm_rayon /tmp/ftzz" \
        "./target/release/rm_remove_dir_all /tmp/ftzz" \
        "./target/release/rmz /tmp/ftzz"
  done

  hyperfine --warmup 3 -N \
    --export-markdown "benches/remove_100_000_files_${num_bytes}_bytes_0_depth.md" \
    --export-json "benches/remove_100_000_files_${num_bytes}_bytes_0_depth.json" \
    --prepare "ftzz g -n 100_000 -b ${num_bytes} -d 0 /tmp/ftzz" \
      "rm -r /tmp/ftzz" \
      "find /tmp/ftzz -delete" \
      "rsync --delete -r /tmp/empty/ /tmp/ftzz" \
      "perl -e 'for(</tmp/ftzz/*>){unlink}'" \
      "./target/release/rm_stdlib /tmp/ftzz" \
      "./target/release/rm_rayon /tmp/ftzz" \
      "./target/release/rm_remove_dir_all /tmp/ftzz" \
      "./target/release/rmz /tmp/ftzz"

  hyperfine --warmup 3 -N \
    --export-markdown "benches/remove_100_000_files_${num_bytes}_bytes_5_files_per_dir.md" \
    --export-json "benches/remove_100_000_files_${num_bytes}_bytes_5_files_per_dir.json" \
    --prepare "ftzz g -n 100_000 -b ${num_bytes} -r 5 /tmp/ftzz" \
      "rm -r /tmp/ftzz" \
      "find /tmp/ftzz -delete" \
      "rsync --delete -r /tmp/empty/ /tmp/ftzz" \
      "./target/release/rm_stdlib /tmp/ftzz" \
      "./target/release/rm_rayon /tmp/ftzz" \
      "./target/release/rm_remove_dir_all /tmp/ftzz" \
      "./target/release/rmz /tmp/ftzz"
done

Results

remove_1M_files_0_bytes.md

Command Mean [s] Min [s] Max [s] User [s] System [s] Relative
./target/release/rmz /tmp/ftzz 4.711 ± 0.649 4.208 6.099 0.535 18.650 1.00
./target/release/rm_rayon /tmp/ftzz 5.689 ± 0.549 5.007 6.630 1.253 20.088 1.21 ± 0.20
./target/release/rm_stdlib /tmp/ftzz 9.345 ± 0.063 9.282 9.457 0.377 8.708 1.98 ± 0.27
rm -r /tmp/ftzz 9.491 ± 0.059 9.444 9.650 0.465 8.768 2.01 ± 0.28
find /tmp/ftzz -delete 9.535 ± 0.051 9.434 9.620 0.485 8.804 2.02 ± 0.28
rsync --delete -r /tmp/empty/ /tmp/ftzz 11.046 ± 0.049 10.989 11.120 0.911 9.914 2.34 ± 0.32
./target/release/rm_remove_dir_all /tmp/ftzz 12.647 ± 0.088 12.532 12.758 1.376 10.950 2.68 ± 0.37

remove_1M_files_1G_bytes.md

Command Mean [s] Min [s] Max [s] User [s] System [s] Relative
./target/release/rmz /tmp/ftzz 6.559 ± 0.463 5.977 7.689 0.556 28.872 1.00
./target/release/rm_rayon /tmp/ftzz 7.765 ± 0.454 7.047 8.567 1.331 30.759 1.18 ± 0.11
rsync --delete -r /tmp/empty/ /tmp/ftzz 18.924 ± 0.321 18.394 19.428 0.977 16.014 2.89 ± 0.21
./target/release/rm_stdlib /tmp/ftzz 22.892 ± 0.885 21.842 24.252 0.451 17.758 3.49 ± 0.28
find /tmp/ftzz -delete 23.020 ± 0.755 21.342 23.911 0.601 17.805 3.51 ± 0.27
rm -r /tmp/ftzz 23.354 ± 0.990 21.777 24.772 0.563 17.907 3.56 ± 0.29
./target/release/rm_remove_dir_all /tmp/ftzz 26.357 ± 0.758 24.981 27.640 1.505 20.445 4.02 ± 0.31

remove_100_000_files_0_bytes.md

Command Mean [ms] Min [ms] Max [ms] User [ms] System [ms] Relative
./target/release/rmz /tmp/ftzz 459.3 ± 96.0 369.7 583.3 65.2 1697.5 1.00
./target/release/rm_rayon /tmp/ftzz 648.1 ± 94.7 535.5 811.3 158.6 2121.1 1.41 ± 0.36
./target/release/rm_stdlib /tmp/ftzz 804.2 ± 19.5 777.9 848.2 42.5 723.3 1.75 ± 0.37
find /tmp/ftzz -delete 826.2 ± 22.6 796.3 853.0 55.3 728.1 1.80 ± 0.38
rm -r /tmp/ftzz 873.7 ± 54.2 813.7 968.5 53.2 744.3 1.90 ± 0.41
rsync --delete -r /tmp/empty/ /tmp/ftzz 1012.7 ± 16.8 996.3 1045.1 96.1 846.1 2.21 ± 0.46
./target/release/rm_remove_dir_all /tmp/ftzz 1132.0 ± 46.9 1099.2 1243.2 136.3 945.9 2.46 ± 0.53

remove_100_000_files_0_bytes_0_depth.md

Command Mean [ms] Min [ms] Max [ms] User [ms] System [ms] Relative
./target/release/rmz /tmp/ftzz 830.7 ± 21.7 805.1 863.2 31.6 769.5 1.00
./target/release/rm_stdlib /tmp/ftzz 833.8 ± 26.8 806.7 881.3 34.7 769.5 1.00 ± 0.04
rm -r /tmp/ftzz 847.1 ± 15.3 833.9 871.3 53.1 775.2 1.02 ± 0.03
find /tmp/ftzz -delete 849.7 ± 14.8 835.2 875.2 50.3 781.1 1.02 ± 0.03
rsync --delete -r /tmp/empty/ /tmp/ftzz 978.3 ± 24.4 954.3 1033.6 89.4 819.5 1.18 ± 0.04
perl -e 'for(</tmp/ftzz/*>){unlink}' 1070.0 ± 5.3 1063.0 1078.6 132.8 923.4 1.29 ± 0.03
./target/release/rm_remove_dir_all /tmp/ftzz 1155.9 ± 42.9 1104.6 1256.0 124.8 984.6 1.39 ± 0.06
./target/release/rm_rayon /tmp/ftzz 1193.3 ± 307.0 1082.7 2066.6 102.5 2030.4 1.44 ± 0.37

remove_100_000_files_0_bytes_5_files_per_dir.md

Command Mean [s] Min [s] Max [s] User [s] System [s] Relative
./target/release/rmz /tmp/ftzz 0.640 ± 0.189 0.445 0.950 0.145 2.228 1.00
./target/release/rm_rayon /tmp/ftzz 0.784 ± 0.110 0.670 0.961 0.303 2.610 1.22 ± 0.40
./target/release/rm_stdlib /tmp/ftzz 0.988 ± 0.057 0.940 1.117 0.091 0.832 1.54 ± 0.46
find /tmp/ftzz -delete 1.090 ± 0.021 1.056 1.136 0.164 0.883 1.70 ± 0.50
rm -r /tmp/ftzz 1.123 ± 0.013 1.098 1.141 0.153 0.921 1.75 ± 0.52
rsync --delete -r /tmp/empty/ /tmp/ftzz 1.190 ± 0.020 1.168 1.238 0.168 0.956 1.86 ± 0.55
./target/release/rm_remove_dir_all /tmp/ftzz 1.340 ± 0.031 1.304 1.405 0.224 1.045 2.09 ± 0.62

remove_100_000_files_1G_bytes.md

Command Mean [s] Min [s] Max [s] User [s] System [s] Relative
./target/release/rmz /tmp/ftzz 0.558 ± 0.129 0.400 0.734 0.063 2.339 1.00
./target/release/rm_rayon /tmp/ftzz 0.625 ± 0.116 0.535 0.934 0.141 2.450 1.12 ± 0.33
./target/release/rm_stdlib /tmp/ftzz 1.104 ± 0.014 1.080 1.132 0.043 1.020 1.98 ± 0.46
find /tmp/ftzz -delete 1.128 ± 0.016 1.110 1.155 0.054 1.027 2.02 ± 0.47
rm -r /tmp/ftzz 1.129 ± 0.008 1.117 1.142 0.054 1.035 2.02 ± 0.47
rsync --delete -r /tmp/empty/ /tmp/ftzz 1.311 ± 0.005 1.301 1.317 0.098 1.138 2.35 ± 0.54
./target/release/rm_remove_dir_all /tmp/ftzz 1.454 ± 0.014 1.434 1.478 0.143 1.261 2.60 ± 0.60

remove_100_000_files_1G_bytes_0_depth.md

Command Mean [s] Min [s] Max [s] User [s] System [s] Relative
./target/release/rm_rayon /tmp/ftzz 1.087 ± 0.005 1.081 1.097 0.092 2.516 1.00
./target/release/rmz /tmp/ftzz 1.115 ± 0.025 1.090 1.173 0.028 1.048 1.03 ± 0.02
./target/release/rm_stdlib /tmp/ftzz 1.124 ± 0.038 1.094 1.208 0.034 1.044 1.03 ± 0.04
rm -r /tmp/ftzz 1.129 ± 0.017 1.102 1.158 0.052 1.046 1.04 ± 0.02
find /tmp/ftzz -delete 1.137 ± 0.011 1.120 1.156 0.057 1.048 1.05 ± 0.01
rsync --delete -r /tmp/empty/ /tmp/ftzz 1.251 ± 0.019 1.235 1.301 0.087 1.093 1.15 ± 0.02
perl -e 'for(</tmp/ftzz/*>){unlink}' 1.354 ± 0.008 1.342 1.367 0.130 1.192 1.24 ± 0.01
./target/release/rm_remove_dir_all /tmp/ftzz 1.470 ± 0.031 1.438 1.537 0.127 1.285 1.35 ± 0.03

remove_100_000_files_1G_bytes_5_files_per_dir.md

Command Mean [s] Min [s] Max [s] User [s] System [s] Relative
./target/release/rmz /tmp/ftzz 0.508 ± 0.034 0.483 0.600 0.115 2.352 1.00
./target/release/rm_rayon /tmp/ftzz 0.683 ± 0.059 0.599 0.779 0.261 2.828 1.34 ± 0.15
./target/release/rm_stdlib /tmp/ftzz 1.246 ± 0.033 1.209 1.327 0.102 1.082 2.45 ± 0.18
find /tmp/ftzz -delete 1.387 ± 0.034 1.354 1.462 0.169 1.159 2.73 ± 0.19
rm -r /tmp/ftzz 1.402 ± 0.023 1.372 1.451 0.163 1.182 2.76 ± 0.19
rsync --delete -r /tmp/empty/ /tmp/ftzz 1.485 ± 0.012 1.460 1.501 0.168 1.237 2.92 ± 0.20
./target/release/rm_remove_dir_all /tmp/ftzz 1.632 ± 0.026 1.598 1.689 0.230 1.338 3.21 ± 0.22

remove_10_000_files_0_bytes.md

Command Mean [ms] Min [ms] Max [ms] User [ms] System [ms] Relative
./target/release/rmz /tmp/ftzz 33.9 ± 1.1 32.1 36.3 9.2 145.0 1.00
./target/release/rm_rayon /tmp/ftzz 40.1 ± 2.3 37.2 48.1 18.6 160.0 1.18 ± 0.08
./target/release/rm_stdlib /tmp/ftzz 77.2 ± 1.3 75.3 80.0 7.2 68.4 2.28 ± 0.08
find /tmp/ftzz -delete 85.4 ± 1.3 84.0 88.5 10.1 73.0 2.52 ± 0.09
rm -r /tmp/ftzz 86.1 ± 1.5 84.8 89.2 11.3 73.0 2.54 ± 0.09
./target/release/rm_remove_dir_all /tmp/ftzz 110.8 ± 1.5 109.1 113.8 18.2 90.2 3.27 ± 0.12
rsync --delete -r /tmp/empty/ /tmp/ftzz 138.6 ± 1.3 136.8 143.0 14.1 83.7 4.09 ± 0.14

remove_10_000_files_1G_bytes.md

Command Mean [ms] Min [ms] Max [ms] User [ms] System [ms] Relative
./target/release/rmz /tmp/ftzz 45.4 ± 1.8 43.7 50.0 7.3 297.6 1.00
./target/release/rm_rayon /tmp/ftzz 51.6 ± 1.2 50.0 53.8 18.6 310.4 1.14 ± 0.05
./target/release/rm_stdlib /tmp/ftzz 171.2 ± 1.5 168.9 173.8 5.5 162.0 3.77 ± 0.15
find /tmp/ftzz -delete 179.9 ± 0.9 178.7 181.4 12.2 163.8 3.96 ± 0.16
rm -r /tmp/ftzz 181.5 ± 1.3 180.1 184.6 12.4 165.4 4.00 ± 0.16
./target/release/rm_remove_dir_all /tmp/ftzz 208.0 ± 1.5 206.0 209.9 17.3 186.1 4.58 ± 0.19
rsync --delete -r /tmp/empty/ /tmp/ftzz 233.8 ± 0.9 232.5 235.1 14.4 176.7 5.15 ± 0.21

remove_10_files_0_bytes.md

Command Mean [ms] Min [ms] Max [ms] User [ms] System [ms] Relative
./target/release/rmz /tmp/ftzz 1.1 ± 0.1 1.0 1.4 0.6 1.6 1.00
./target/release/rm_remove_dir_all /tmp/ftzz 1.3 ± 0.0 1.2 1.4 0.4 0.8 1.18 ± 0.07
./target/release/rm_rayon /tmp/ftzz 1.5 ± 0.4 1.2 3.5 1.2 2.9 1.39 ± 0.34
./target/release/rm_stdlib /tmp/ftzz 2.8 ± 0.1 2.5 3.2 0.7 1.9 2.53 ± 0.16
rm -r /tmp/ftzz 3.5 ± 0.1 3.3 3.7 1.0 2.3 3.25 ± 0.20
find /tmp/ftzz -delete 4.2 ± 0.3 3.5 4.8 1.0 2.6 3.85 ± 0.38
rsync --delete -r /tmp/empty/ /tmp/ftzz 46.8 ± 0.1 46.5 47.0 2.4 5.1 42.89 ± 2.40

remove_10_files_1G_bytes.md

Command Mean [ms] Min [ms] Max [ms] User [ms] System [ms] Relative
./target/release/rm_rayon /tmp/ftzz 15.9 ± 1.1 14.1 17.7 1.0 69.2 1.00
./target/release/rmz /tmp/ftzz 17.3 ± 0.6 16.2 18.3 0.7 61.5 1.09 ± 0.08
./target/release/rm_stdlib /tmp/ftzz 48.4 ± 0.3 47.4 49.1 0.3 47.4 3.04 ± 0.20
./target/release/rm_remove_dir_all /tmp/ftzz 48.5 ± 0.3 47.5 48.8 0.3 47.6 3.05 ± 0.20
rm -r /tmp/ftzz 49.0 ± 1.9 48.0 57.7 0.5 47.7 3.08 ± 0.24
find /tmp/ftzz -delete 51.2 ± 8.9 48.9 91.1 0.3 48.0 3.22 ± 0.60
rsync --delete -r /tmp/empty/ /tmp/ftzz 90.3 ± 0.2 90.0 90.8 1.5 48.5 5.68 ± 0.38

Copy

Setup

cargo install fcp xcp
git clone https://github.com/wheybags/wcp.git && mkdir wcp/build && (cd wcp/build && cmake .. -DCMAKE_BUILD_TYPE=Release && make)

Run

for num_bytes in {0,1G}; do
  for num_files in {10,10_000,100_000,1M}; do
    hyperfine --warmup 3 -N \
      --export-markdown "benches/copy_${num_files}_files_${num_bytes}_bytes.md" \
      --export-json "benches/copy_${num_files}_files_${num_bytes}_bytes.json" \
      --setup "ftzz g -n ${num_files} -b ${num_bytes} /tmp/ftzz" \
      --prepare "rm -rf /tmp/ftzzz" --cleanup "rm -r /tmp/ftzz" \
        "cp -r /tmp/ftzz /tmp/ftzzz" \
        "fcp /tmp/ftzz /tmp/ftzzz" \
        "xcp -r /tmp/ftzz /tmp/ftzzz" \
        "./wcp/build/wcp /tmp/ftzz /tmp/ftzzz" \
        "rsync -rlp --inplace /tmp/ftzz /tmp/ftzzz" \
        "sh -c '(cd /tmp/ftzz; tar cf - .) | (mkdir /tmp/ftzzz; cd /tmp/ftzzz; tar xf -)'" \
        "./target/release/cp_stdlib /tmp/ftzz /tmp/ftzzz" \
        "./target/release/cp_rayon /tmp/ftzz /tmp/ftzzz" \
        "./target/release/cpz /tmp/ftzz /tmp/ftzzz"
  done

  hyperfine --warmup 3 -N \
    --export-markdown "benches/copy_100_000_files_${num_bytes}_bytes_0_depth.md" \
    --export-json "benches/copy_100_000_files_${num_bytes}_bytes_0_depth.json" \
    --setup "ftzz g -n 100_000 -b ${num_bytes} -d 0 /tmp/ftzz" \
    --prepare "rm -rf /tmp/ftzzz" --cleanup "rm -r /tmp/ftzz" \
      "cp -r /tmp/ftzz /tmp/ftzzz" \
      "fcp /tmp/ftzz /tmp/ftzzz" \
      "xcp -r /tmp/ftzz /tmp/ftzzz" \
      "./wcp/build/wcp /tmp/ftzz /tmp/ftzzz" \
      "rsync -rlp --inplace /tmp/ftzz /tmp/ftzzz" \
      "sh -c '(cd /tmp/ftzz; tar cf - .) | (mkdir /tmp/ftzzz; cd /tmp/ftzzz; tar xf -)'" \
      "./target/release/cp_stdlib /tmp/ftzz /tmp/ftzzz" \
      "./target/release/cp_rayon /tmp/ftzz /tmp/ftzzz" \
      "./target/release/cpz /tmp/ftzz /tmp/ftzzz"

  hyperfine --warmup 3 -N \
    --export-markdown "benches/copy_100_000_files_${num_bytes}_bytes_5_files_per_dir.md" \
    --export-json "benches/copy_100_000_files_${num_bytes}_bytes_5_files_per_dir.json" \
    --setup "ftzz g -n 100_000 -b ${num_bytes} -r 5 /tmp/ftzz" \
    --prepare "rm -rf /tmp/ftzzz" --cleanup "rm -r /tmp/ftzz" \
      "cp -r /tmp/ftzz /tmp/ftzzz" \
      "fcp /tmp/ftzz /tmp/ftzzz" \
      "xcp -r /tmp/ftzz /tmp/ftzzz" \
      "./wcp/build/wcp /tmp/ftzz /tmp/ftzzz" \
      "rsync -rlp --inplace /tmp/ftzz /tmp/ftzzz" \
      "sh -c '(cd /tmp/ftzz; tar cf - .) | (mkdir /tmp/ftzzz; cd /tmp/ftzzz; tar xf -)'" \
      "./target/release/cp_stdlib /tmp/ftzz /tmp/ftzzz" \
      "./target/release/cp_rayon /tmp/ftzz /tmp/ftzzz" \
      "./target/release/cpz /tmp/ftzz /tmp/ftzzz"
done

hyperfine --warmup 3 -N \
  --export-markdown "benches/copy_100_000_files_1G_bytes_0_depth_0_entropy.md" \
  --export-json "benches/copy_100_000_files_1G_bytes_0_depth_0_entropy.json" \
  --setup "ftzz g -n 100_000 -b 1G -d 0 --fill-byte 0 /tmp/ftzz" \
  --prepare "rm -rf /tmp/ftzzz" --cleanup "rm -r /tmp/ftzz" \
    "cp -r /tmp/ftzz /tmp/ftzzz" \
    "fcp /tmp/ftzz /tmp/ftzzz" \
    "xcp -r /tmp/ftzz /tmp/ftzzz" \
    "./wcp/build/wcp /tmp/ftzz /tmp/ftzzz" \
    "rsync -rlp --inplace /tmp/ftzz /tmp/ftzzz" \
    "sh -c '(cd /tmp/ftzz; tar cf - .) | (mkdir /tmp/ftzzz; cd /tmp/ftzzz; tar xf -)'" \
    "./target/release/cp_stdlib /tmp/ftzz /tmp/ftzzz" \
    "./target/release/cp_rayon /tmp/ftzz /tmp/ftzzz" \
    "./target/release/cpz /tmp/ftzz /tmp/ftzzz"

Results

copy_1M_files_0_bytes.md

Command Mean [s] Min [s] Max [s] User [s] System [s] Relative
./target/release/cpz /tmp/ftzz /tmp/ftzzz 5.076 ± 0.976 4.283 6.700 2.769 23.713 1.00
./target/release/cp_rayon /tmp/ftzz /tmp/ftzzz 5.854 ± 0.310 5.542 6.429 5.287 29.890 1.15 ± 0.23
fcp /tmp/ftzz /tmp/ftzzz 11.801 ± 0.085 11.727 11.993 5.376 59.341 2.33 ± 0.45
xcp -r /tmp/ftzz /tmp/ftzzz 11.829 ± 0.066 11.733 11.920 5.420 39.040 2.33 ± 0.45
sh -c '(cd /tmp/ftzz; tar cf - .) | (mkdir /tmp/ftzzz; cd /tmp/ftzzz; tar xf -)' 15.019 ± 0.079 14.915 15.131 3.893 14.808 2.96 ± 0.57
cp -r /tmp/ftzz /tmp/ftzzz 18.436 ± 0.097 18.313 18.622 2.836 15.261 3.63 ± 0.70
./target/release/cp_stdlib /tmp/ftzz /tmp/ftzzz 19.496 ± 0.090 19.346 19.609 3.217 15.928 3.84 ± 0.74
rsync -rlp --inplace /tmp/ftzz /tmp/ftzzz 28.195 ± 0.159 27.929 28.439 6.635 23.035 5.55 ± 1.07

copy_1M_files_1G_bytes.md

Command Mean [s] Min [s] Max [s] User [s] System [s] Relative
./target/release/cpz /tmp/ftzz /tmp/ftzzz 7.593 ± 0.735 7.141 9.648 3.151 40.109 1.00
./target/release/cp_rayon /tmp/ftzz /tmp/ftzzz 8.827 ± 0.796 8.104 10.143 5.482 46.376 1.16 ± 0.15
xcp -r /tmp/ftzz /tmp/ftzzz 13.374 ± 0.149 13.103 13.559 6.218 46.409 1.76 ± 0.17
fcp /tmp/ftzz /tmp/ftzzz 13.459 ± 0.087 13.349 13.636 5.837 68.041 1.77 ± 0.17
sh -c '(cd /tmp/ftzz; tar cf - .) | (mkdir /tmp/ftzzz; cd /tmp/ftzzz; tar xf -)' 23.669 ± 1.371 21.564 25.593 5.858 22.336 3.12 ± 0.35
cp -r /tmp/ftzz /tmp/ftzzz 28.173 ± 0.091 28.047 28.343 2.950 24.495 3.71 ± 0.36
./target/release/cp_stdlib /tmp/ftzz /tmp/ftzzz 28.945 ± 0.121 28.744 29.084 3.394 24.931 3.81 ± 0.37
rsync -rlp --inplace /tmp/ftzz /tmp/ftzzz 89.173 ± 1.821 87.317 94.034 12.557 55.997 11.74 ± 1.16

copy_100_000_files_0_bytes.md

Command Mean [s] Min [s] Max [s] User [s] System [s] Relative
./target/release/cpz /tmp/ftzz /tmp/ftzzz 0.379 ± 0.009 0.373 0.397 0.261 1.910 1.00
./target/release/cp_rayon /tmp/ftzz /tmp/ftzzz 0.487 ± 0.018 0.471 0.535 0.513 2.604 1.28 ± 0.06
fcp /tmp/ftzz /tmp/ftzzz 0.597 ± 0.016 0.581 0.629 0.554 3.073 1.57 ± 0.05
xcp -r /tmp/ftzz /tmp/ftzzz 0.957 ± 0.015 0.939 0.982 0.529 3.295 2.52 ± 0.07
sh -c '(cd /tmp/ftzz; tar cf - .) | (mkdir /tmp/ftzzz; cd /tmp/ftzzz; tar xf -)' 1.302 ± 0.022 1.277 1.332 0.389 1.274 3.43 ± 0.10
cp -r /tmp/ftzz /tmp/ftzzz 1.632 ± 0.023 1.611 1.682 0.277 1.323 4.30 ± 0.11
./target/release/cp_stdlib /tmp/ftzz /tmp/ftzzz 1.730 ± 0.009 1.719 1.750 0.308 1.389 4.56 ± 0.11
rsync -rlp --inplace /tmp/ftzz /tmp/ftzzz 2.838 ± 0.019 2.803 2.864 0.638 2.141 7.49 ± 0.18

copy_100_000_files_0_bytes_0_depth.md

Command Mean [s] Min [s] Max [s] User [s] System [s] Relative
xcp -r /tmp/ftzz /tmp/ftzzz 1.133 ± 0.014 1.109 1.161 0.474 3.606 1.00
fcp /tmp/ftzz /tmp/ftzzz 1.260 ± 0.010 1.247 1.280 0.412 6.386 1.11 ± 0.02
./target/release/cp_rayon /tmp/ftzz /tmp/ftzzz 1.270 ± 0.010 1.256 1.287 0.390 6.620 1.12 ± 0.02
./target/release/cpz /tmp/ftzz /tmp/ftzzz 1.365 ± 0.005 1.357 1.373 0.167 1.171 1.20 ± 0.02
sh -c '(cd /tmp/ftzz; tar cf - .) | (mkdir /tmp/ftzzz; cd /tmp/ftzzz; tar xf -)' 1.406 ± 0.012 1.389 1.428 0.339 1.394 1.24 ± 0.02
cp -r /tmp/ftzz /tmp/ftzzz 1.618 ± 0.012 1.594 1.636 0.255 1.335 1.43 ± 0.02
./target/release/cp_stdlib /tmp/ftzz /tmp/ftzzz 1.735 ± 0.008 1.725 1.751 0.287 1.418 1.53 ± 0.02
rsync -rlp --inplace /tmp/ftzz /tmp/ftzzz 2.157 ± 0.030 2.117 2.216 0.581 2.057 1.90 ± 0.04

copy_100_000_files_0_bytes_5_files_per_dir.md

Command Mean [s] Min [s] Max [s] User [s] System [s] Relative
./target/release/cpz /tmp/ftzz /tmp/ftzzz 0.413 ± 0.013 0.404 0.440 0.318 2.214 1.00
./target/release/cp_rayon /tmp/ftzz /tmp/ftzzz 0.493 ± 0.008 0.484 0.509 0.576 2.661 1.19 ± 0.04
fcp /tmp/ftzz /tmp/ftzzz 0.505 ± 0.009 0.496 0.523 0.672 2.700 1.22 ± 0.05
xcp -r /tmp/ftzz /tmp/ftzzz 0.844 ± 0.033 0.804 0.897 0.723 2.841 2.04 ± 0.10
sh -c '(cd /tmp/ftzz; tar cf - .) | (mkdir /tmp/ftzzz; cd /tmp/ftzzz; tar xf -)' 1.319 ± 0.018 1.297 1.350 0.463 1.371 3.19 ± 0.11
cp -r /tmp/ftzz /tmp/ftzzz 1.737 ± 0.008 1.729 1.757 0.318 1.385 4.20 ± 0.14
./target/release/cp_stdlib /tmp/ftzz /tmp/ftzzz 1.791 ± 0.012 1.767 1.805 0.336 1.419 4.33 ± 0.14
rsync -rlp --inplace /tmp/ftzz /tmp/ftzzz 3.028 ± 0.023 2.991 3.064 0.787 2.217 7.33 ± 0.24

copy_100_000_files_1G_bytes.md

Command Mean [s] Min [s] Max [s] User [s] System [s] Relative
./target/release/cpz /tmp/ftzz /tmp/ftzzz 0.711 ± 0.129 0.618 1.064 0.317 3.421 1.00
./target/release/cp_rayon /tmp/ftzz /tmp/ftzzz 0.819 ± 0.042 0.763 0.878 0.551 4.251 1.15 ± 0.22
fcp /tmp/ftzz /tmp/ftzzz 0.858 ± 0.030 0.811 0.897 0.591 4.541 1.21 ± 0.22
xcp -r /tmp/ftzz /tmp/ftzzz 1.110 ± 0.016 1.079 1.129 0.610 3.930 1.56 ± 0.28
sh -c '(cd /tmp/ftzz; tar cf - .) | (mkdir /tmp/ftzzz; cd /tmp/ftzzz; tar xf -)' 2.437 ± 0.061 2.377 2.565 0.726 2.784 3.43 ± 0.63
cp -r /tmp/ftzz /tmp/ftzzz 2.453 ± 0.016 2.430 2.478 0.289 2.108 3.45 ± 0.63
./target/release/cp_stdlib /tmp/ftzz /tmp/ftzzz 2.550 ± 0.029 2.513 2.616 0.331 2.161 3.59 ± 0.65
rsync -rlp --inplace /tmp/ftzz /tmp/ftzzz 10.653 ± 0.120 10.454 10.842 4.030 6.585 14.99 ± 2.73

copy_100_000_files_1G_bytes_0_depth.md

Command Mean [s] Min [s] Max [s] User [s] System [s] Relative
xcp -r /tmp/ftzz /tmp/ftzzz 1.209 ± 0.020 1.181 1.244 0.524 4.290 1.00
./target/release/cp_rayon /tmp/ftzz /tmp/ftzzz 1.340 ± 0.005 1.334 1.350 0.402 6.999 1.11 ± 0.02
fcp /tmp/ftzz /tmp/ftzzz 1.358 ± 0.015 1.338 1.391 0.432 6.779 1.12 ± 0.02
./target/release/cpz /tmp/ftzz /tmp/ftzzz 2.080 ± 0.012 2.064 2.099 0.206 1.820 1.72 ± 0.03
./target/release/cp_stdlib /tmp/ftzz /tmp/ftzzz 2.371 ± 0.020 2.348 2.408 0.288 2.030 1.96 ± 0.04
sh -c '(cd /tmp/ftzz; tar cf - .) | (mkdir /tmp/ftzzz; cd /tmp/ftzzz; tar xf -)' 2.422 ± 0.026 2.386 2.477 0.638 2.749 2.00 ± 0.04
cp -r /tmp/ftzz /tmp/ftzzz 2.464 ± 0.037 2.432 2.541 0.268 2.133 2.04 ± 0.05
rsync -rlp --inplace /tmp/ftzz /tmp/ftzzz 9.292 ± 0.080 9.164 9.382 3.508 5.456 7.69 ± 0.14

copy_100_000_files_1G_bytes_0_depth_0_entropy.md

Command Mean [s] Min [s] Max [s] User [s] System [s] Relative
xcp -r /tmp/ftzz /tmp/ftzzz 1.200 ± 0.018 1.178 1.230 0.539 4.253 1.00
./target/release/cp_rayon /tmp/ftzz /tmp/ftzzz 1.346 ± 0.010 1.332 1.361 0.407 7.095 1.12 ± 0.02
fcp /tmp/ftzz /tmp/ftzzz 1.409 ± 0.033 1.345 1.451 0.448 6.888 1.17 ± 0.03
./target/release/cpz /tmp/ftzz /tmp/ftzzz 2.086 ± 0.015 2.057 2.104 0.212 1.819 1.74 ± 0.03
cp -r /tmp/ftzz /tmp/ftzzz 2.331 ± 0.019 2.308 2.366 0.275 2.004 1.94 ± 0.03
./target/release/cp_stdlib /tmp/ftzz /tmp/ftzzz 2.364 ± 0.008 2.356 2.380 0.296 2.013 1.97 ± 0.03
sh -c '(cd /tmp/ftzz; tar cf - .) | (mkdir /tmp/ftzzz; cd /tmp/ftzzz; tar xf -)' 2.406 ± 0.034 2.366 2.488 0.628 2.734 2.00 ± 0.04
rsync -rlp --inplace /tmp/ftzz /tmp/ftzzz 9.245 ± 0.059 9.144 9.332 3.526 5.482 7.70 ± 0.13

copy_100_000_files_1G_bytes_5_files_per_dir.md

Command Mean [s] Min [s] Max [s] User [s] System [s] Relative
./target/release/cp_rayon /tmp/ftzz /tmp/ftzzz 0.733 ± 0.028 0.714 0.812 0.598 3.970 1.00
fcp /tmp/ftzz /tmp/ftzzz 0.766 ± 0.027 0.742 0.826 0.695 4.110 1.05 ± 0.05
./target/release/cpz /tmp/ftzz /tmp/ftzzz 0.775 ± 0.063 0.691 0.880 0.385 3.810 1.06 ± 0.10
xcp -r /tmp/ftzz /tmp/ftzzz 1.050 ± 0.025 1.021 1.094 0.745 3.788 1.43 ± 0.07
sh -c '(cd /tmp/ftzz; tar cf - .) | (mkdir /tmp/ftzzz; cd /tmp/ftzzz; tar xf -)' 2.359 ± 0.033 2.324 2.406 0.771 2.752 3.22 ± 0.13
cp -r /tmp/ftzz /tmp/ftzzz 2.506 ± 0.017 2.480 2.526 0.338 2.110 3.42 ± 0.13
./target/release/cp_stdlib /tmp/ftzz /tmp/ftzzz 2.540 ± 0.018 2.501 2.559 0.366 2.116 3.46 ± 0.14
rsync -rlp --inplace /tmp/ftzz /tmp/ftzzz 9.930 ± 0.168 9.748 10.341 4.235 6.487 13.54 ± 0.57

copy_10_000_files_0_bytes.md

Command Mean [ms] Min [ms] Max [ms] User [ms] System [ms] Relative
./target/release/cpz /tmp/ftzz /tmp/ftzzz 33.6 ± 0.4 33.1 34.7 28.8 186.4 1.00
./target/release/cp_rayon /tmp/ftzz /tmp/ftzzz 43.7 ± 0.5 42.9 45.3 55.6 243.4 1.30 ± 0.02
fcp /tmp/ftzz /tmp/ftzzz 45.7 ± 0.7 44.9 48.0 61.5 249.9 1.36 ± 0.03
xcp -r /tmp/ftzz /tmp/ftzzz 78.2 ± 5.3 71.6 96.4 59.0 271.6 2.33 ± 0.16
sh -c '(cd /tmp/ftzz; tar cf - .) | (mkdir /tmp/ftzzz; cd /tmp/ftzzz; tar xf -)' 119.5 ± 1.7 116.7 122.6 44.7 118.7 3.55 ± 0.07
cp -r /tmp/ftzz /tmp/ftzzz 159.8 ± 2.5 156.7 164.3 29.7 126.2 4.75 ± 0.09
./target/release/cp_stdlib /tmp/ftzz /tmp/ftzzz 164.0 ± 1.5 162.2 167.9 31.2 129.0 4.87 ± 0.07
rsync -rlp --inplace /tmp/ftzz /tmp/ftzzz 321.1 ± 3.0 316.5 324.9 73.3 208.2 9.55 ± 0.15

copy_10_000_files_1G_bytes.md

Command Mean [ms] Min [ms] Max [ms] User [ms] System [ms] Relative
./target/release/cpz /tmp/ftzz /tmp/ftzzz 55.0 ± 2.9 52.0 59.7 34.0 313.3 1.00
./target/release/cp_rayon /tmp/ftzz /tmp/ftzzz 66.2 ± 3.7 62.9 72.7 55.6 374.0 1.20 ± 0.09
fcp /tmp/ftzz /tmp/ftzzz 67.9 ± 4.0 63.7 75.4 63.6 380.9 1.23 ± 0.10
xcp -r /tmp/ftzz /tmp/ftzzz 142.2 ± 44.9 93.2 197.6 72.8 379.1 2.59 ± 0.83
cp -r /tmp/ftzz /tmp/ftzzz 231.3 ± 2.5 228.8 235.2 30.9 194.4 4.21 ± 0.23
./target/release/cp_stdlib /tmp/ftzz /tmp/ftzzz 234.7 ± 2.7 231.4 240.0 36.0 192.6 4.27 ± 0.23
sh -c '(cd /tmp/ftzz; tar cf - .) | (mkdir /tmp/ftzzz; cd /tmp/ftzzz; tar xf -)' 676.7 ± 4.2 670.8 683.0 185.0 915.5 12.31 ± 0.66
rsync -rlp --inplace /tmp/ftzz /tmp/ftzzz 2572.6 ± 26.8 2535.0 2626.5 2714.9 1197.5 46.78 ± 2.55

copy_10_files_0_bytes.md

Command Mean [ms] Min [ms] Max [ms] User [ms] System [ms] Relative
./target/release/cp_rayon /tmp/ftzz /tmp/ftzzz 2.7 ± 0.3 2.3 3.7 2.3 5.2 1.00
./target/release/cp_stdlib /tmp/ftzz /tmp/ftzzz 2.7 ± 0.1 2.6 3.3 0.7 1.8 1.01 ± 0.11
fcp /tmp/ftzz /tmp/ftzzz 2.8 ± 0.1 2.5 3.2 2.2 5.4 1.03 ± 0.13
./target/release/cpz /tmp/ftzz /tmp/ftzzz 2.9 ± 0.2 2.6 3.5 1.4 4.8 1.08 ± 0.14
cp -r /tmp/ftzz /tmp/ftzzz 3.4 ± 0.4 3.0 4.0 0.9 2.3 1.26 ± 0.20
xcp -r /tmp/ftzz /tmp/ftzzz 3.6 ± 0.4 3.2 4.6 1.7 3.2 1.33 ± 0.21
sh -c '(cd /tmp/ftzz; tar cf - .) | (mkdir /tmp/ftzzz; cd /tmp/ftzzz; tar xf -)' 9.6 ± 1.4 6.7 10.9 6.6 7.8 3.56 ± 0.64
rsync -rlp --inplace /tmp/ftzz /tmp/ftzzz 47.7 ± 0.1 47.2 48.0 3.2 5.7 17.77 ± 1.96

copy_10_files_1G_bytes.md

Command Mean [ms] Min [ms] Max [ms] User [ms] System [ms] Relative
./target/release/cpz /tmp/ftzz /tmp/ftzzz 1.3 ± 0.2 1.1 2.2 0.8 2.1 1.00
fcp /tmp/ftzz /tmp/ftzzz 1.5 ± 0.1 1.3 1.9 1.1 3.1 1.11 ± 0.15
./target/release/cp_rayon /tmp/ftzz /tmp/ftzzz 1.9 ± 0.2 1.5 7.6 1.4 3.9 1.39 ± 0.23
cp -r /tmp/ftzz /tmp/ftzzz 1.9 ± 0.4 1.6 2.7 0.5 1.3 1.40 ± 0.31
./target/release/cp_stdlib /tmp/ftzz /tmp/ftzzz 3.0 ± 0.1 2.8 3.2 0.7 2.1 2.23 ± 0.26
xcp -r /tmp/ftzz /tmp/ftzzz 3.4 ± 0.4 2.7 11.4 1.8 3.6 2.55 ± 0.40
sh -c '(cd /tmp/ftzz; tar cf - .) | (mkdir /tmp/ftzzz; cd /tmp/ftzzz; tar xf -)' 304.3 ± 14.9 297.9 346.4 83.4 449.5 225.47 ± 27.89
rsync -rlp --inplace /tmp/ftzz /tmp/ftzzz 1042.4 ± 1.7 1040.5 1045.6 1529.1 350.0 772.37 ± 87.80