On 6 Oct 2007 at 10:41, Ralf Gross wrote:

> How can I get information about how often a tape drive started/stopped
> writing to tape? Is there a way to monitor the throughput of the SCSI
> interface to the drive?

On FreeBSD, I'd tell you to look at iostat.  Output looks something 
like this:

$ iostat
      tty           twed0              cd0              sa0           
  cpu
 tin tout  KB/t tps  MB/s   KB/t tps  MB/s   KB/t tps  MB/s  us ni sy 
in id
   0   30 31.02  34  1.03   0.00   0  0.00  62.99   1  0.08   3  0  2 
 0 95

iostat -w 1 will output one of those lines every second.

-- 
Dan Langille - http://www.langille.org/
Available for hire: http://www.freebsddiary.org/dan_langille.php



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