# Assessment of Application Taxonomy

This document is an assessment of the Application Taxonomy developed by
the Real-Time Task Team led by Terry Bilke.

## Data Rate

The following table is a breakdown showing the number of applications
requiring various rate rates.

  ----------------------------------------------------- -----------------
  Samples per Second                                    Count

  1                                                     5

  10                                                    2

  30                                                    15

  Grand Total                                           22
  ----------------------------------------------------- -----------------

![](media/image1.wmf){width="5.114583333333333in"
height="2.9583333333333335in"}

Majority of applications identified today require 30 samples per second
data rate.

## Data Latency

The following table is a breakdown showing the number of applications
requiring various latency rates.

  -------------------------------------------------- --------------------
  Desired Latency                                    Count

  0.1 Seconds                                        3

  1-2 Minutes                                        2

  1-5 Seconds                                        9

  5-10 Seconds                                       1

  N/A                                                7

  Grand Total                                        22
  -------------------------------------------------- --------------------

![](media/image2.wmf){width="5.114583333333333in"
height="2.9583333333333335in"}

## Data Extract Size

The following table is a breakdown showing the size of the data extract
needed by the application. This was calculated by multiplying the time
window times the sample rate.

![](media/image3.wmf){width="5.114583333333333in"
height="2.9583333333333335in"}

The largest extract is actually a system monitoring application to
determine the system health. I don't see this as an appropriate
requirement to build the data network for. There are other approaches
that probably should be used.

## Most Demanding Applications

The following table is a breakdown showing the number of applications
requiring various latency rates and the sample rates.

  ------------ ---------- --------- ---------- ----------- ----- ----------
  Samples II   0.1        1-2       1-5        5-10        N/A   Grand
               Seconds    Minutes   Seconds    Seconds           Total

  1800 - 6000  2                    3          1           3     9

  18000        1          1         3                      1     6

  86400 -                 1         3                      1     5
  108000                                                         

  0                                                        1     1

  2592000                                                  1     1

  Grand Total  3          2         9          1           7     22
  ------------ ---------- --------- ---------- ----------- ----- ----------

All of the applications requiring 0.1 seconds latency rates are
essentially protection related. For the near term these are out of scope
for the DMTT and it is expected that protection applications would be
handled through dedicated point to point communication.

The three applications that require 108,000 samples are related to
thermal monitoring, voltage stability and finding system anomalies.