Oracle SuperCluster T5-8 User Manual

Configuring CPU and Memory Resources (osc-setcoremem)
These points provide important information related to the use of osc-setcoremem:
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The final CPU and memory layout for a dedicated domain is optimized for locality to
minimize accesses to non-local resources.
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The granularity of CPU and memory migration is 1 core and 16GB.
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Empty dedicated domains (domains with zero cores and zero memory) are not supported.
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The tool tracks resource allocation and ensures that the selections you make are valid. See
“Minimum and Maximum Resources (Dedicated Domains)” on page 173.
■
Affected dedicated domains must be rebooted after any change.
The tool enables you to change the CPU and memory allocations in one of two levels of
granularity:
■
Socket granularity – The tool automatically allocates each domain a minimum of one
socket, then enables you to allocate remaining sockets to the domains. See “Change CPU/
Memory Allocations (Socket Granularity)” on page 182.
■
Core granularity – The tool automatically allocates each domain a minimum number of
cores, then enables you to allocate additional cores in one-core increments. See “Change
CPU/Memory Allocations (Core Granularity)” on page 186.
If you configure the CPU and memory resources so that some resources are not allocated
to any domain, those unallocated resources are parked. Parked resources are placed in a
logical CPU and memory repository and are available for I/O Domains. See “Park Cores and
Memory” on page 190.
You can park resources from dedicated domains anytime, but you cannot move parked
resources to dedicated domains once I/O Domains are created.
Also see “Supported Domain Configurations” on page 174.
Related Information
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“Minimum and Maximum Resources (Dedicated Domains)” on page 173
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“Supported Domain Configurations” on page 174
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“Plan CPU and Memory Allocations” on page 175
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“Display the Current Domain Configuration (osc-setcoremem)” on page 178
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“Display the Current Domain Configuration (ldm)” on page 180
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“Change CPU/Memory Allocations (Socket Granularity)” on page 182
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“Change CPU/Memory Allocations (Core Granularity)” on page 186
■
“Park Cores and Memory” on page 190
172 Oracle SuperCluster T5-8 Owner's Guide • May 2016

Oracle SuperCluster T5-8 Specifications

General

Brand	Oracle
Model	SuperCluster T5-8
Category	Server
Language	English