4.5.7 Notes on when a threshold is changed during the specified report interval
If a threshold is changed during the specified report interval and a report is displayed in the window, some limitations apply to the display of report data.
This subsection explains how report data is displayed in comprehensive evaluation tables and performance charts when a threshold is changed during the specified report interval.
- Organization of this subsection
(1) Comprehensive evaluation table that is displayed when a threshold is changed during the specified report interval
If a threshold is changed during the specified report interval, there are limitations to the data that is displayed in a comprehensive evaluation table. The table below describes the data that is displayed in a comprehensive evaluation table.
|
No. |
Evaluation item |
Data that is displayed |
|---|---|---|
|
1 |
Average value |
Displays the average value for the specified report interval. |
|
2 |
SLO compliance rate |
Displays the compliance rate of the thresholds for the specified report interval. For the threshold compliance rate, data is retained at the plotting interval#1 for each specified report interval. Therefore, when the report interval is one month and threshold is not monitored for a 30-minute period, the threshold for that period is not used for the calculation of the threshold compliance rate. However, if a period during which threshold value monitoring was not running is intermixed with periods during which threshold value monitoring was running in a 30-minute interval, the threshold compliance rate is calculated assuming that the threshold compliance was met for the period during which threshold value monitoring was not running. |
|
3 |
Comparison to previous period (percentage)#2 |
Displays the percentage of the average value for the specified report interval compared to that for the previous period. |
- #1
-
The plotting interval depends on the specified report interval. For the correspondence between report interval and plotting interval, see Table 4-6 Relationship between report interval and performance chart's plotting interval.
If the plotting interval is 30 minutes, the ranges are XX:00:00 to XX:29:59 and XX:30:00 to XX:59:59 (in the format hour:minute:second, where XX is 00 to 23).
- #2
-
The displayed table headers depend on the specified report interval. For the table header that is displayed for each report interval, see Table 4-4 Relationship between report interval and previous period to which percentage applies.
(2) Performance chart that is displayed when a threshold is changed during the specified report interval
If a threshold is changed during the specified report interval, there are limitations to the data that is displayed in a performance chart. The table below describes the data that is displayed in a performance chart.
|
No. |
Type of line graph |
Data that is displayed |
|---|---|---|
|
1 |
Threshold-value line |
The thresholds are plotted at the plotting intervals# for the specified report interval, and a line graph is drawn based on those values. For example, if the report interval is one month, the maximum value is displayed for the day on which the threshold is changed. |
|
2 |
Maximum-value line |
The maximum values are plotted at the plotting intervals# for the specified report interval, and a line graph is drawn based on those values. |
|
3 |
Average-value line |
The average values are plotted at the plotting intervals# for the specified report interval, and a line graph is drawn based on those values. |
|
4 |
Minimum-value line |
The minimum values are plotted at the plotting intervals# for the specified report interval, and a line graph is drawn based on those values. |
- #
-
The plotting interval depends on the specified report interval. For the correspondence between the report interval and the plotting interval, see Table 4-6 Relationship between report interval and performance chart's plotting interval.
The following figure shows a comprehensive evaluation table and performance chart example when a threshold was changed during the specified report interval.
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![[Figure]](GRAPHICS/ZU041400.GIF)
This example displays report data beginning on November 1, 2012. It shows that the threshold for monitoring item average response time was changed on November 19, 2012.