top io mode

Adam Vande More amvandemore at
Thu Nov 25 11:28:31 UTC 2010

top io doesn't seem to display stats when dealing direct with a block device
like so:

dd if=/dev/ada0 of=/dev/null

However if dd runs on a regular file eg

dd if=test.file of=/dev/null

then stats are reported in top.

Is this the expected behavior?

Adam Vande More

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