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Power10 Quick Start Guide – IBM i Performance Tips

How To


Summary

This article provides a brief guide to optimizing performance for Power10 systems running IBM i.

Steps

IBM i
Ensure the IBM i operating system level is current. Fix Central provides the latest updates for IBM i, VIOS, HMC and firmware. https://www.ibm.com/support/fixcentral/

Firmware
Ensure the system firmware level is current. Fix Central provides the latest updates for IBM i, VIOS, HMC and firmware. https://www.ibm.com/support/fixcentral/

Virtual Processors – shared vs dedicated processors
Utilize dedicated processors for optimal partition level performance.

Memory DIMMs
Follow proper memory plug-in rules. If possible, fully populate memory DIMM slots and utilize similar sized memory DIMMs.

Processor SMT level
To take full advantage of the performance of Power10 CPUs, we recommend clients utilize the IBM i default processor multitasking settings, which will maximize the SMT level for the LPAR configuration.

Partition Placement
Current FW levels ensure optimal placement of the partitions. However, if frequent DLPAR operations are executed on partitions on the CEC, it is recommended the use DPO to optimize placement
EnergyScale
For the best CPU processor speed, ensure that Maximum Performance is set (default for IBM Power E1080). This setting is configurable in the ASMI.
Storage and Networking I/O
VIOS provides flexible storage and networking functionality. For the best possible performance, utilize native IBM i interfaces for I/O.

Related Information

IBM i on Power - Performance FAQ

Document Location

Worldwide

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Document Information

Modified date:
04 June 2024

UID

ibm17155098

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