PCP Vector¶
Query Formats¶
Time Series¶
Returns the data as time series. For metrics with instance domains, each instance is shown as a separate target (i.e., line in a line graph). If there are multiple queries defined, all values will be combined in the same graph.
Heatmap¶
Transforms the data for the heatmap panel.
Instance names have to be in the following format: <lower_bound>-<upper_bound>, for example, 512-1023 (the bcc PMDA produces histograms in this format).
The following settings have to be set in the heatmap panel options:
| Setting | Value |
|---|---|
| Format | Time Series Buckets |
| Bucket bound | Upper |
Table¶
Transforms the data for the table panel. Two or more queries are required, and it will transform every metric into a column, and every instance into a row. The latest values of the currently selected timeframe will be displayed.
Legend Format Templating¶
The following variables can be used in the legend format box:
| Variable | Description | Example |
|---|---|---|
$expr |
query expression | rate(disk.dm.avactive) |
$metric |
metric name | disk.dev.read |
$metric0 |
last part of metric name | read |
$instance |
instance name | sda |
$some_label |
label value | anything |