View the capacity issues in an NetScaler instance
When a NetScaler instance has consumed most its available capacity, packet-drop may occur while processing the client traffic. This issue causes low performance in a NetScaler instance. By understanding such NetScaler capacity issues, you can proactively allocate additional licenses to steady the NetScaler performance.
In the Circle Pack View, you can view the NetScaler instance capacity issues if exists.
To view NetScaler capacity issues,
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Navigate to Infrastructure > Infrastructure Analytics.
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Select the circle pack view.
Note:
In Infrastructure Analytics, the circle-pack and tabular views display the events and issues that occurred in the last one hour.
The following illustration suggests the capacity issues exist in the selected instance:
The issues are categorized on the following capacity parameters:
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Throughput Limit Reached – The number of packets dropped in the instance after the throughput limit is reached.
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PE CPU Limit Reached - The number of packets dropped on all NICs after the PE CPU limit is reached.
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PPS Limit Reached – The number of packets dropped in the instance after PPS limit is reached.
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SSL Throughput Rate Limit – The number of times the SSL throughput limit reached.
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SSL TPS Rate Limit – The number of times the SSL TPS limit reached.
Related information
View recommended actions to solve capacity issues
The NetScaler Console recommends actions that can solve capacity issues. To view the recommended actions, perform the following steps:
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In Infrastructure > Infrastructure Analytics, select the tabular view.
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Select the instance that has capacity issues and click Details.
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In the instance page, scroll down to the Issues section.
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Select each issue and view the recommended actions to resolve capacity issues.
The NetScaler Console polls these events every five minutes from the NetScaler instance and displays the packet drops or rate-limit counter increments if exists.
The NetScaler Console calculates the instance score on the defined capacity threshold.
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Low threshold – 1 packet drop or rate-limit counter increment
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High threshold – 10000 packets drop or rate-limit counter increment
Therefore, when a NetScaler instance breaches the capacity threshold, the instance score is impacted.
When packets drop or rate-limit counter increments, an event is generated under the
ADCCapacityBreach category. To view these events, navigate to Settings > System Events.