IO script

[Wenji Huang]

Hi,

  Just as discussion at last conference call, Dtrace provides good 
toolkit for users. see            

       http://www.opensolaris.org/os/community/dtrace/dtracetoolkit/
       http://prefetch.net/articles/solaris.dtracetopten.html

  If systemtap has same facility, it is very helpful to widen the use.

  Based on idea from Dtrace, I created two scripts which can illustrate 
disk I/O status.

  Please kindly review it. If possible, we maybe collect/create some 
useful stap scripts as toolkit embedded in source.

Regards,
Wenji

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