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On Sun, Apr 11, 2010 at 6:12 AM, Kerin Millar <kerframil@×××××.com> wrote: |
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<SNIP> |
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> |
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> $ paste <(cat /sys/devices/system/cpu/cpu0/cache/index?/type) <(cat |
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> /sys/devices/system/cpu/cpu0/cache/index?/size) | sed -re 's/\W+/: /' |
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> |
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> On my system that results in the following: |
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> |
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> Data: 32K |
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> Instruction: 32K |
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> Unified: 6144K |
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> |
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|
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Interesting how they change across the processor families: |
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|
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i5-661: (2 cores, hyperthreaded) |
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|
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Data: 32K |
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Instruction: 32K |
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Unified: 256K |
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Unified: 4096K |
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|
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i7-920: (4 cores, hyperthreaded) |
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|
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Data: 32K |
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Instruction: 32K |
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Unified: 256K |
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Unified: 8192K |
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i7-980x (6 cores, hyperthreaded) |
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|
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Data: 32K |
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Instruction: 32K |
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Unified: 256K |
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Unified: 12288K |
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|
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So on these newer processors I suspect that these values are for each |
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hyperthread - i.e. repeated internally for each virtual core |
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|
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Data: 32K |
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Instruction: 32K |
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Unified: 256K |
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(possibly shared between physical core and it's associated hyperthread?) |
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|
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and then the final value: |
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|
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Unified: 4096K |
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Unified: 8192K |
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Unified: 12288K |
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|
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is 2048K/physical pair and shared between all the 2-thread cores in the chip. |
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- Mark |
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