Processor cache

Represents a processor cache, including its level, associativity, line size, capacity, and type

Original source

The macOS cache information are provided by MacOsProcessorCache, which inherits ProcessorCache

KInfo's source

val processorCaches: List<ProcessorCache> = hardware.processorInfo.processorCaches
val sample: ProcessorCache = processorCaches.first()

The examples require a non-empty processor cache list; check it before calling first(). The native cache queries do not distinguish performance levels

Properties

level

The cache level, such as 1 for L1 or 2 for L2

val level: Byte = sample.level

println(level) // e.g. 1

associativity

The cache associativity, or 0 when unavailable. The macOS L3 mapping uses 0

val associativity: Byte = sample.associativity

println(associativity) // e.g. 0

lineSize

The global cache line size in bytes, or 0 when unavailable

val lineSize: Short = sample.lineSize

println(lineSize) // e.g. 128

cacheSize

The cache capacity in bytes. Only entries with a positive mapped capacity are included

val cacheSize: Int = sample.cacheSize

println(cacheSize) // e.g. 131072

type

The cache type. macOS maps L1 instruction and data caches to INSTRUCTION and DATA, and L2/L3 caches to UNIFIED

val type: CacheType = sample.type

println(type) // e.g. Instruction