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Converting counters to rates [message #200848] Tue, 14 November 2006 23:46 Go to next message
Eclipse User
Originally posted by: owen.discobabe.net

Hi,

I have a data source containing a timestamp and the number of bytes
transmitted in the lifetime of a network interface at the given
timestamp. I would like to generate a chart showing time on the X-axis
(so far, so good) but bandwidth on the y-axis. Basically, I'd like to
plot not the raw bytes-out counter but number of bytes per 1-second
interval.

What would be the easiest way to do that with BIRT? I got excited when I
saw the "grouping" but it doesn't appear to do what I want. Any help
greatly appreciated.

Cheers,
Owen
Re: Converting counters to rates [message #200978 is a reply to message #200848] Wed, 15 November 2006 14:54 Go to previous message
Eclipse User
Originally posted by: owen.discobabe.net

Hi,

As a follow up, I had a look at how rrdtool solves this problem and it
has a concept of COUNTER and DERIVE, the latter being useful for just
the problem I describe. I tried googling for BIRT and DERIVE to see if
had anything similar but no luck. Any ideas?

Cheers,
Owen

Owen Fraser-Green wrote:
> Hi,
>
> I have a data source containing a timestamp and the number of bytes
> transmitted in the lifetime of a network interface at the given
> timestamp. I would like to generate a chart showing time on the X-axis
> (so far, so good) but bandwidth on the y-axis. Basically, I'd like to
> plot not the raw bytes-out counter but number of bytes per 1-second
> interval.
>
> What would be the easiest way to do that with BIRT? I got excited when I
> saw the "grouping" but it doesn't appear to do what I want. Any help
> greatly appreciated.
>
> Cheers,
> Owen
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