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Performance Counter Metrics

Field Name Normalization

The names of performance counters may contain characters which are invalid for field names on some backends. Valid field name characters are letters, numbers and underscore ([a-zA-Z0-9_]). Field names must begin with a letter.

uberAgent checks KV events (key=value) if a transformation is required and performs the steps as follows:

  1. Normalize field names by replacing invalid characters with an underscore.
  2. Check if the field name starts with a character. Otherwise, add uA_ to the beginning.
  3. Remove all duplicate underscore characters.

This is done for every type of receiver to make sure the field names are identical in every backend. This also applies to field names sent via a custom script.

For instance:

Original input field: \Process(explorer)\Handle Count
After replacement:    uA_Process_explorer_Handle_Count

Performance Counters

uberAgent can optionally collect the values of any Windows performance counters.


  • Source type: uberAgent:System:PerformanceCounter
  • Used in dashboards: n/a
  • Enabled through configuration setting: Performance Counters
  • Related configuration settings: n/a

List of Fields in the Raw Agent Data

Field Description Data type Unit Example
<CounterName> Perfomance counter name String \System\System Up Time


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