(2Ch) 1st-level data cache: 32-KB, 8-way set associative, 64-byte line size 从上面信息得到当前CPU的cache信息如下: L1 Cache : 32KB , 8路组相连,linesize为 64Byte 64个组 L2 Cache:256KB 8路组相连,linesize为 64Byte 512个组 L3 Cache:6MB 12路组相连,linesize为 64Byte 8192个组 图3 获取...
但是很多情况下cpu只需要这一个cache line的某些word，因此这时候block size的增大意味着更多的带宽被浪费...
L1d cache: 32K L1i cache: 32K L2 cache: 1024K L3 cache: 33792K NUMA node0 CPU(s): 0-95 ---8269CY #lscpu Architecture: x86_64 CPUop-mode(s): 32-bit, 64-bit Byte Order: Little Endian CPU(s): 104 On-line CPU(s) list: 0-103 Thread(s) per core: 2 Core(s) per socket:...
本人vmware虚拟机实验环境kali下查看cpu L3缓存(这里用index2表示)的ways_of_associate是4,关联度就是4;cache line是64byte,那么物理地址的0~5bit就是offset,6~7bit就是index;下面的代码中uintptr_t next_addr = buf + page_size,产生新物理地址时直接在上一个物理地址上加0x1000,低12bit是没变的,offset和...
每次调用CPUID分别在EAX、EBX、ECX、EDX中返回16个ASCII字符,处理器名称/商标字串最多48个字符,前导字符为空格,结束字符为NULL,在寄存器中的排列顺序为little-endian(即低字符在前),下面程序可以在DOS下显示处理器名称/商标字串(使用MASM 6编译)。 .model tiny ...
(2Ch) 1st-level data cache: 32-KB, 8-way set associative, 64-byte line size 从上面信息得到当前CPU的cache信息如下: L1 Cache : 32KB , 8路组相连,linesize为64Byte 64个组 L2 Cache:256KB 8路组相连,linesize为64Byte 512个组 L3 Cache:6MB 12路组相连,linesize为64Byte 8192个组 图3 获取cache...
If the cache line size in Xeon is really 64B instead of 128B(one sector), then thelease significant 6 bits(0..5) instead of 7 bits(0..6) shouldnot be consideredin alias comparison. But that is not VTune does, right? L.Y. Message Edited by mfcking@yahoo.com on ...
Westmere的L3使用了DECTED(double-error-correcting triple-error-detecting,三位错误检测-双位错误恢复)ECC技术来提高成品率(Yield)和可靠性(Reliability),顾名思义,DECTED可以检测到一个缓存线(cache line,64位)中出现的三位错误并可以恢复二位的错误。上图展示了传统的冗余修复方法和DECTED ECC的对比。对于正常工作...
Cache line is 64 bytes. The "second (alternate) sector prefetch" feature causes reads to bring pairs of cache lines into L2, giving some of the effects of doubling cache line size. This would be in effect on your P4, or any model without a BIOS feature deselection. Writes will access...
L2 Cache Line Size: L2 Cache Associativity: L3 Cache Size: 8192 KB Stepping: 9 Model: 158 Family: 6 wine /home/laomai/.wine/drive_c/Program\ Files\ \(x86\)/LTC/LTspiceIV/scad3.exe ** 截图中的 “Simulation Speed: 699.13 μS/S” 就是俺最在乎的仿真速度。