Is this linux specific?
I don't have a linux box handy to check, but I'd imagine iostat would do
exactly that.

On solaris, I use iostat with the "-xnp" args and follow it with the
interval time and number of intervals.

For example:
> iostat -xnp 5 100

Gives me 100 shots on 5 second intervals of all the tape devices, read
and write in separate columns, as well as waits, and reads/writes per
second.


Paul
-- 


> -----Original Message-----
> From: veritas-bu-bounces at mailman.eng.auburn.edu 
> [mailto:veritas-bu-bounces at mailman.eng.auburn.edu] On Behalf 
> Of Darren Dunham
> Sent: October 11, 2006 2:17 PM
> To: veritas-bu at mailman.eng.auburn.edu
> Subject: [Veritas-bu] Viewing vault duplication performance.
> 
> 
> I'm testing some vault duplication on a Linux master server.  Since
> 'iostat' doesn't seem to show tape activity, is there any other way
> of calculating the speed?
> 
> A completed duplication shows elapsed time, but not data transferred.
> Is there some log file that would contain the amount that was moved?
> 
> NBU 6.0/MP3 Linux
> 
> Thanks!
> 
> -- 
> Darren Dunham                                           
> ddunham at taos.com
> Senior Technical Consultant         TAOS            
> http://www.taos.com/
> Got some Dr Pepper?                           San Francisco, 
> CA bay area
>          < This line left intentionally blank to confuse you. >
> _______________________________________________
> Veritas-bu maillist  -  Veritas-bu at mailman.eng.auburn.edu
> http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
> 
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