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Cats

Name: Anonymous 2011-09-26 2:54

Tell me about your cat(s), /prog/.

Name: Anonymous 2011-09-26 10:26

mercury tmp # time dd if=/dev/zero bs=4096 count=1048576 | cat > /dev/null
1048576+0 records in
1048576+0 records out
4294967296 bytes (4.3 GB) copied, 1.77577 s, 2.4 GB/s

real    0m1.776s
user    0m0.218s
sys     0m1.576s
mercury tmp # time dd if=/dev/zero bs=4096 count=1048576 | ./a.out > /dev/null
1048576+0 records in
1048576+0 records out
4294967296 bytes (4.3 GB) copied, 59.5882 s, 72.1 MB/s

real    0m59.590s
user    0m57.176s
sys     0m2.389s


I do wonder why GNU cat is so much faster than my cat.

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