perfsonar-dev - Fw: units expected from RRD MA
Subject: perfsonar development work
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- From: "Vedrin Jeliazkov" <>
- To:
- Subject: Fw: units expected from RRD MA
- Date: Thu, 10 Aug 2006 14:23:19 +0300
[forgot CC: to
]
"Vedrin Jeliazkov"
<>
wrote:
> Hi Loukik,
>
> Loukik Kudarimoti
> <>
> wrote:
>
> > Hi Vedrin and Andreas,
> >
> > I have a query about the units that you assume you are getting from RRD
> > MA. Basically, the response from RRD MA is as below:
> >
> >
> > <nmwg:data id="localhost.7e5caec1:10cf76b6c9d:-7fdf"
> > metadataIdRef="meta1">
> > <nmwg:datum timeValue="1121558400" value="189.25857952114652" />
> > <nmwg:datum timeValue="1121644800" value="157.6300922870065" />
> > <nmwg:datum timeValue="1121731200" value="341.2686134412051" />
> > <nmwg:datum timeValue="1121817600" value="376.50555043698813" />
> > <nmwg:datum timeValue="1121904000" value="320.4919869209144" />
> > </nmwg:data>
> >
> >
> > It doesn't say whether the value is in bits per second, Mbits per second
> > or bytes per second. What do you assume the unit to be in?
>
> PerfsonarUI assumes bytes per second, because this is the most frequent case
> found so far. We had a problem with SEEREN RRD MA, because its data source
> contained bits per second. In the absence of a better solution, the
workaround
> was to change SEEREN's data source to bytes per second.
>
> > do you think
> > it would be better if the response explicitly mentioned the units and
> > also the timeType?
>
> Yes - I would say that units should be reported for all returned numeric
> values. I've commented this on the ML a while ago.
>
> Kind regards,
> Vedrin
>
> PS: Could you please check why
> http://mu.dante.org.uk:8090/axis/services/MeasurementArchiveService doesn't
> respond to perfsonarUI queries since last week or two? What's the current
> version of the RRD MA running there? Apparently Tomcat is running (as
reported
> by SmokePing), but it looks like there's something wrong with the service
> itself (I tried without success the 3 different schemes - perfsonar, NMWG2v2
> and NMWG2v2_netutil).
>
>
- Fw: units expected from RRD MA, Vedrin Jeliazkov, 08/10/2006
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