CPU Core Monitoring extension
- Latest Dynatrace
- Extension
Monitor CPU utilization per core on Linux and Windows hosts, tracking user, kernel, and IRQ time.
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Overview
The CPU Core Monitoring extension collects per-core CPU utilization metrics on OneAgent-monitored Linux and Windows hosts, including user time, kernel time, IRQ time, and additional time components.
Use cases
- Monitor utilization for each CPU core.
- Identify high CPU utilization on specific CPU cores.
- Break down the components of CPU core utilization:
- See percentages of
user time,kernel time,IRQ timeand more.
- See percentages of
Compatibility information
This extension is compatible with Linux and Windows OneAgent hosts only.
Activation and setup
Activate the extension in your environment from 
Dynatrace Hub, and configure which OneAgent hosts to monitor.
Details
Licensing and costs
There is no charge to use the extension. You are only charged for the data that the extension ingests.
The CPU Core Monitoring extension ingests custom metrics, which consume Davis Data Units (DDUs) (Dynatrace classic license) or Metrics powered by Grail (DPS), according to your license model.
If all feature sets are enabled and the extension runs every minute, the approximate number of metric data points per minute is:
For Linux hosts:
(10 * <# of CPU cores>) + 1
For Windows hosts:
(6 * <# of CPU cores>) + 1
Dynatrace Platform Subscription
In the Dynatrace Platform Subscription, metric ingestion consumes Metrics powered by Grail according to the number of ingested metric data points.
To calculate the approximate yearly consumption, apply the following calculation: <metric data points per minute> * 60 minutes * 24 hours * 365 days.
Dynatrace classic license
In the classic licensing model, metric ingestion consumes Davis Data Units (DDUs) at the rate of .001 DDUs per metric data point. Multiply the above formula for annual data points by .001 to estimate annual DDU usage.
The DDU cost above does not include any possible log events or custom events that are triggered by the extension. For more information, see DDU events.
FAQ
Why are there different metrics available for Linux and Windows?
Windows and Linux expose different subsets of CPU core metrics, which the extension takes into account.