At regular intervals, NSX Advanced Load Balancer Service Engines collect values for a wide range of metrics and sends them to the NSX Advanced Load Balancer Controller. The Controller then aggregates these metric values into several buckets.
The NSX Advanced Load Balancer updates the metrics periodically as defined in the Metric Update Frequency in the virtual service configuration. If a DDoS event is detected by an SE, the SE immediately sends information about the attack to the Controller, instead of locally storing the data until the next polling interval.
The following table lists the increments in which metrics data can be displayed in the web interface. The data granularity per increment and the retention period also are listed.
Metric Increments |
Data Granularity |
Retention Period |
|---|---|---|
Real time* |
5 seconds |
1 hour |
Past 6 hours |
5 minutes |
1 day |
Past day |
5 minutes |
1 day |
Past week |
1 per hour |
1 week |
Past month |
1 per day |
1 year |
Past quarter |
1 per day |
1 year |
Past year |
1 per day |
1 pre year |
Real-time metrics is enabled by default for the first 30 minutes of a virtual service’s life. After these initial 30 minutes, real-time metrics is disabled to conserve resources. Real-time metrics can be re-enabled manually at any time.
