How do I run iotop in a Solaris 10 Branded zone ( sparc ) running on Sol 11 GZ ?

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Hi,

Basically we are after the heaviest hitting processes of a particular filesystem in the sol 10 branded zone.

I have been told that iotop is the script to try,

I have downloaded the DTraceToolkit-0.99 toolkit and extracted the contents to a directory -both in the sol 11 GZ and in the Sol 10 Branded Zone.

The problem I have is that - within the zone - iotop appears to simply fail - with the script thrown to the screen with an errort message at the end - as per...

      :::
}

/*
  * Cleanup for Ctrl-C
  */
dtrace:::END
{
        trunc(@out);
}
: "/usr/lib/dtrace/procfs.d", line 316: t_bind_cpu is not a member of struct _kthread