Splunk® Supported Add-ons

Splunk Add-on for Microsoft Cloud Services

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Performance reference for the Azure Event Hub input in the Splunk Add-on for Microsoft Cloud Services

The following is reference information about Splunk's performance testing of the Azure Event Hub input in the Splunk Add-on for Microsoft Cloud Services. The testing occurred with version 4.1.0, when the Azure Event Hub input was first introduced. Use this information to enhance the performance of your own Azure Event Hub data collection tasks.

Many factors impact performance results, including file size, file compression, event size, deployment architecture, batch size for event hub file size, and hardware. Results represent reference information and do not represent performance in all environments.

Testing Architecture

Splunk tested the performance of the Event Hub input using a single-instance Splunk Enterprise 8.1.0 on a m5.4xlarge instance to ensure CPU, memory, storage, and network do not introduce any bottlenecks. Instance specs:


Testing Parameters Splunk Enterprise testing environment Splunk Cloud testing environment
2 TB (24 MB/s) 8 TB (92.5 MB/s)
Deployment 1 Single-instance Splunk Enterprise deployment 2 Inputs Data Managers (IDM), 3 indexers, 1 search head
Instance Type m5.4xlarge (vcpu 16/64 GiB ram) c5.9large (vcpu 36/72 GiB ram)
Modinputs 10 10 per IDM
Parallel Pipelines 2 8 on IDM
Azure Configuration
Bandwidth 20 TU 20 TU
IAM role assignments for Namespace EventHubs Data Owner or EventHubs Data Receiver EventHubs Data Owner or EventHubs Data Receiver
Namespaces 1 2
Eventhubs 1 1 per namespace
Partitions ~ 10 or 12 10 per eventhub
Last modified on 14 May, 2021
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This documentation applies to the following versions of Splunk® Supported Add-ons: released


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