(0.56) RAM Class: Per-kind segment allocation and sizing #22578
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Introduce distinct segment categories (SUB4G, FREQUENTLY_ACCESSED, INFREQUENTLY_ACCESSED). Separates hot vs. cold J9Class data for better memory efficiency. SUB4G segments are sized in multiples of aligned J9Class headers and tagged with MEMORY_TYPE_RAM_CLASS_SUB4G. Related: eclipse-openj9#20644 Co-authored-by: Nick Kamal <[email protected]> Signed-off-by: Babneet Singh <[email protected]>
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Introduce distinct segment categories (
SUB4G,FREQUENTLY_ACCESSED,INFREQUENTLY_ACCESSED).Separates hot vs. cold
J9Classdata for better memory efficiency.SUB4Gsegments are sized in multiples of alignedJ9Classheadersand tagged with
MEMORY_TYPE_RAM_CLASS_SUB4G.Related: #20644
Depends on eclipse-omr/omr#7916
Depends on eclipse-openj9/openj9-omr#249
Backport of #22530