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atusi@osol:/pool1/data$ pfexec dd if=/pool1/data/4gb.img of=/dev/null ^C5799408+0 records in 5799407+0 records out 2969296384 bytes (3.0 GB) copied, 17.6815 s, 168 MB/s
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atusi@osol:/pool1/data$ pfexec dd if=/pool1/data/4gb.img of=/dev/null bs=1M count=4000 4000+0 records in 4000+0 records out 4194304000 bytes (4.2 GB) copied, 1.77588 s, 2.4 GB/s
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