Relative values in the chart.

MikhailIsaev · Post by **MikhailIsaev** » Fri Dec 21, 2012 6:10 am

Hi

Is it possible to draw a graph in relative value?

Thank you.

BSOD2600 · Post by **BSOD2600** » Fri Dec 21, 2012 4:46 pm

More detail on what you mean please.

MikhailIsaev · Post by **MikhailIsaev** » Mon Dec 24, 2012 6:01 am

BSOD2600 wrote:More detail on what you mean please.

I apologize for my English.

Talking about recycling port = current speed divided by the maximum speed and multiply by 100%.

Global issues:
Ports can be at different speeds on the same device.

A local problem:
Suppose all the ports of the device with the same maximum rate, then it is likely somewhere in the derivation of the graph should be used to translation for "%".

Helmut Schneider · Post by **Helmut Schneider** » Wed Dec 26, 2012 3:52 pm

+1

Graph 2 values (e.g. 200k and 40k) and also have the percentage between both in the same graph. It would be nice if the percentage value could be graphed relative to the highest data source and not flat lined.

Post by **gandalf** » Sat Dec 29, 2012 5:42 pm

That will be available with the COMPUTE data source. This is code available with 0.8.9, which currently is alpha. Please feel free to download from SVN and test. Don't hesitate to provide feedback in the "Unstable Development Versions" forum
R.

MikhailIsaev · Post by **MikhailIsaev** » Tue Jan 15, 2013 8:29 am

gandalf wrote:That will be available with the COMPUTE data source. This is code available with 0.8.9, which currently is alpha. Please feel free to download from SVN and test. Don't hesitate to provide feedback in the "Unstable Development Versions" forum
R.

Hello!
What is meant by "COMPUTE data source"?

BSOD2600 · Post by **BSOD2600** » Tue Jan 15, 2013 1:30 pm

rrdcreate

COMPUTE

is for storing the result of a formula applied to other data sources in the RRD. This data source is not supplied a value on update, but rather its Primary Data Points (PDPs) are computed from the PDPs of the data sources according to the rpn-expression that defines the formula. Consolidation functions are then applied normally to the PDPs of the COMPUTE data source (that is the rpn-expression is only applied to generate PDPs). In database software, such data sets are referred to as "virtual" or "computed" columns.

MikhailIsaev · Post by **MikhailIsaev** » Wed Jan 16, 2013 4:21 am

BSOD2600 wrote:
COMPUTE

is for storing the result of a formula applied to other data sources in the RRD. This data source is not supplied a value on update, but rather its Primary Data Points (PDPs) are computed from the PDPs of the data sources according to the rpn-expression that defines the formula. Consolidation functions are then applied normally to the PDPs of the COMPUTE data source (that is the rpn-expression is only applied to generate PDPs). In database software, such data sets are referred to as "virtual" or "computed" columns.

Thank you.

MikhailIsaev · Post by **MikhailIsaev** » Wed Jan 16, 2013 7:49 am

BSOD2600 wrote:
COMPUTE

is for storing the result of a formula applied to other data sources in the RRD. This data source is not supplied a value on update, but rather its Primary Data Points (PDPs) are computed from the PDPs of the data sources according to the rpn-expression that defines the formula. Consolidation functions are then applied normally to the PDPs of the COMPUTE data source (that is the rpn-expression is only applied to generate PDPs). In database software, such data sets are referred to as "virtual" or "computed" columns.

The question of "rpn-expression".

Where is will be available for drawing "rpn-expression"?

BSOD2600 · Post by **BSOD2600** » Wed Jan 16, 2013 1:37 pm

Once again, the answer can be found in the rrdtool manual. I strongly suggest you take a read to answer these sorts of questions.

Cacti

Relative values in the chart.

Relative values in the chart.

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