Best Practice 15.3 – Modify SAP parameters to align with hardware selection
Tuning SAP application parameters can help improve the performance of the application. These parameters are often dependent on the underlying hardware configuration and operating system type.
Suggestion 15.3.1 – Allow SAP to self-tune according to
PHYS_MEMSIZE
For recent versions of SAP software, using kernel release 7.40 or higher, self-tuning of certain parameters is possible and recommended. For instance, many parameters are derived via formulas related to the main memory available on an instance (PHYS_MEMSIZE). This allows for automatic tuning of memory parameters when resizing an EC2 instance underlying the SAP software to meet changing performance requirements.
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SAP Documentation: SAP Memory Management: Parameter Reference
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SAP Note: 2085980 – New features in memory management as of Kernel Release 7.40
[Requires SAP Portal Access]
Suggestion 15.3.2 – Review SAP swap space and maximum memory use
When running SAP on AWS, overutilized swap space on disk can cause I/O credit exhaustion on Amazon EBS and lead to performance degradation. Evaluate the different EBS storage options available on AWS and configure swap space to meet your performance needs.
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SAP Note: 1597355 - Swap-space recommendation for Linux
[Requires SAP Portal Access] -
SAP Documentation: Swap Space Requirements
