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测试M4 Pro 大/小核心的访存延迟曲线

L1d: 大核128K,小核64K,均为3周期(非简单pointer chase则4周期)
对4.5 GHz的大核来说,不论是绝对延迟、周期数还是容量,它L1性能都站在处理器的顶端

L2: 大核16+16 MB,从27(近)到90+(远)周期不等;小核4MB 14-15周期。大核L2从带宽上更容易理解结构



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测试M4 Pro 大/小核心的访存延迟曲线

L1d: 大核128K,小核64K,均为3周期(非简单pointer chase则4周期)
对4.5 GHz的大核来说,不论是绝对延迟、周期数还是容量,它L1性能都站在处理器的顶端

L2: 大核16+16 MB,从27(近)到90+(远)周期不等;小核4MB 14-15周期。大核L2从带宽上更容易理解结构

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