Check_MK Werk 5633: It is now possible to sort by the perfometer column

ID: 5633 Title: It is now possible to sort by the perfometer column Component: Multisite Level: 1 Class: New feature Version: 1.5.0i3 The service list status views of Check_MK can now be sorted by the column "Perf-O-Meter". The sorting of the perfometers is sorted by these values: <ol> <li>First sort by the optional perfometer group or perfometer ID</li> <li>Second sort by the sort value of each perfometer</li> </ol> <strong>The Perfometer group / perfometer ID</strong> Each perfometer declaration can have an optional element <tt>sort_group</tt>. This element holds a string that can be used to group different perfometers (that visualize comparable values) together. In case no <tt>sort_group</tt> is defined, the internal ID of the perfometer definition is used. This means that all perfometers which are rendered by the same logical function are sorted together in a perfometer group. <strong>The sort value</strong> The sort value of a perfometer is calculated in different ways for each perfometer type based on the current metrics of this service. <ul> <li><i>Logarithmic</i>: The single logarithmic value displayed by this perfometer is used</li> <li><i>Linear</i>: The first segment of the displayed values is used</li> <li><i>Stacked</i>: The sort value of the first stacked perfometer is used</li> <li><i>Dual<i>: The maximum of both displayed value is used for sorting</li> <ul> The sorting only works for perfometers that are implemented as metric plugin (in <tt>plugins/metrics/</tt>). The legacy perfometers that are implemented as perfometer plugins can not be sorted. Dear check developers: All perfometers that visualize equal types of values have to be sorted together in a sort group. For example all checks that monitor fileystems should have equal perfometers that can be compared to each other and should therefor be sortable by their disk usage.