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@wtnabe
Created July 31, 2010 12:08
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comparison bzip2 and pbzip2 with unix pipeline
$ time find pctraining | cpio -o | bzip2 > pctraining.cpio.bz2
find pctraining 0.00s user 0.01s system 59% cpu 0.025 total
cpio -o 0.11s user 0.20s system 5% cpu 5.455 total
bzip2 > pctraining.cpio.bz2 5.06s user 0.08s system 91% cpu 5.604 total
$ time find pctraining | cpio -o | pbzip2 > pctraining.cpio.pbz2
find pctraining 0.00s user 0.01s system 52% cpu 0.026 total
cpio -o 0.10s user 0.19s system 15% cpu 1.940 total
pbzip2 > pctraining.cpio.pbz2 3.64s user 0.20s system 160% cpu 2.397 total
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