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Metrics resolution

Metrics are collected at three intervals representing low, medium and high resolutions.

The Metrics Resolution settings tab contains three fixed presets (Rare, Standard and Frequent) and an editable custom preset (Custom). Each preset is a group of low, medium and high resolutions. The values are in seconds.

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Time intervals and resolutions

Short time intervals are high resolution metrics. Longer time intervals are low resolution. So:

  • A low resolution interval increases the time between collection, resulting in low-resolution metrics and lower disk usage.
  • A high resolution interval decreases the time between collection, resulting in high-resolution metrics and higher disk usage.

The default values (in seconds) for the fixed presets and their resolution names are:

Editable? Preset Low Medium High
No Rare 300 180 60
No Standard 60 10 5
No Frequent 30 5 1
Yes Custom (defaults) 60 10 5

Values for the Custom preset can be entered as values, or changed with the arrows.

Note

If there is poor network connectivity between PMM Server and PMM Client, or between PMM Client and the database server being monitored, scraping every second may not be possible when the network latency is greater than 1 second.

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