Rodrigo Barbosa wrote:
> On Fri, Jun 09, 2006 at 04:15:38PM -0400, Bowie Bailey wrote:
> > Rodrigo Barbosa wrote:
> > > On Fri, Jun 09, 2006 at 03:56:36PM -0400, Bowie Bailey wrote:
> > > > I have a backup spooling onto a DLT drive. Is there any tool
> > > > that will let me monitor the data throughput on the device?
> > >
> > > Throughput on a tape drive is very variable, depending on how you
> > > are writing/reading the data to it.
> > >
> > > So for some meaningful numbers, you would need your backup
> > > solution to provide them.
> >
> > I'm just looking for raw bps flowing to the device. I don't really
> > care about compression and such at the moment, I just want a rough
> > idea of what the drive is doing.
>
> There is no such thing. You "raw bps" will vary greatly depending on
> your blocksize and other factors.
I don't follow. The backup program is writing data to the device.
Regardless of how complex that data stream is, there is a specific
amount of data that is transmitted in a given period of time.
This would be like sticking a meter inline on an ethernet cable and
simply counting bits.
There may or may not be a tool to do this and it may or may not be a
useful measurement, but it should be possible.
--
Bowie
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