top io mode
jhell
jhell at DataIX.net
Thu Nov 25 16:03:42 UTC 2010
On 11/25/2010 06:28, Adam Vande More wrote:
> 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?
>
Is this on ZFS ?
If that is the case it is a known problem that needs the following patch
to fix the issue.
http://people.freebsd.org/~avg/zfs-ru.diff
I believe it is planned to be MFC'd but am not quite sure so I have CC'd
Andriy and he should be able to advise further.
Regards,
--
jhell,v
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