Home > Workload Solutions > Oracle > White Papers > Oracle Database 19c Best Practices on Dell PowerEdge Servers and PowerStore T Model Arrays > PowerEdge R750xs: Enabling Processor x2APIC Support
The x2APIC BIOS setting is disabled on the PowerEdge R750xs server by default. In this best practice, we enabled the x2APIC setting to evaluate the impact on performance.
Table 14. Best practice category
Category | PowerEdge |
Product | PowerEdge R750xs server |
Type of best practice | Performance Optimization |
Day and value | Day 3, Fine-Tuning |
Overview
The x2APIC is Intel’s Advanced Programmable Interrupt Controller design to improve efficiency in multiprocessor computer systems. An interrupt is a request by the software for the processor to respond to an event. For example, if an operating system requests that the processor suspend current activities and the processor accepts this request, the state of the current activities is saved, and the new request is processed.
The x2APIC is Intel’s most recent Advanced Programmable Interrupt Controller. Enhancements to x2APIC include support for more processors and improved performance. The PowerEdge R750xs used for testing best practices had two Intel® Xeon® Gold 6338 processors each with 32 cores for a total of 64 cores in the server. We also used VMware vSphere 7.3 to virtualize the Oracle database. Enabling x2APIC should create efficiencies for the PowerEdge multi-processor system and optimize the interrupt management of virtual machines.
Recommendation
Overall, the best practice of enabling x2APIC in BIOS can provide a minor improvement in the system performance. Enabling x2APIC is a Day 3, Fine-Tuning recommendation with these considerations:
Additional resources
Setting up BIOS on 15th Generation (15G) Dell PowerEdge Servers