系统架构师.doc

181750391440000/ * 1260000/2007.07 - Intel2007.07 - CPU1.Linux kernel memcpy memmove .Linus Torvalds : The code looks clever and nice !a. memcpy in Linux kernelPatch: /lkml/2010/11/1/464commit id: 59daa706fbec745684702741b9f5373142dd9fdc x86 CPU (memory false dependence) ,3 Linux kernel 8b. memmove in Linux kernelPatch: /lkml/2010/9/16/502commit id: 3b4b682becdfa9f42321aa024d5cc84f71f06d8cfast mov decode2007.07 - CPU2. Gcc Library, Intel icc Library (Icc 12.0) , Open Solaris Libraryx86 SSE- memcpy/memmove, memset, memcmp, strlen ,strncmp , strncpy. CPU Cache memory 27Gcc Library, Intel Icc Library (Icc 12.0) , Open Solaris Library. memcpy/memmove, memcmp, memset CPU:16Corei7 Atom() 32bit 64bit H.J a. 64bit memcpy/memmove for Atom, Core2 and Core i7/p.lib.glibc.alpha/15278patch Atom, Core 2 and Core i764bit memcpy/memmove Atom Core2 memcpy 3 4Corei71memmove Atom 3, Core2 4, Corei7 2b. 64bit memcmp for Core i7/ml/libc-alpha/2010-04/msg00030.html SSE4Corei7 memcmp3c. 64bit strcmp/ml/libc-alpha/2009-07/msg00063.htmlSSE2SSSE3strcmp 32007.07 - CPUd.64bit strcpy/source/xref/onnv/onnv-gate/usr/src/lib/libc/amd64/gen/strcpy.s Gcc Library Opensolaris Library.e.32bit memset/memcpy Atom, Core2 and Corei7/ml/libc-alpha/2010-01/msg00016.html34benchmark 10%15%f.32bit memcmp/strcmp/strncmp Atom, Core2 and Corei7./ml/libc-alpha/2010-02/msg00028.html memcmp 3,strcmp 7, strncmp 5g.64bit AVX memcpy has been done, aligned and unaligned cases get CPU processor limit 16bytes per cycle, improve performance for big size over 8M up to 20% by avoiding load issue out-of-order2007.07 - CPU3.AMD cycleAMD Bulldozer features, Decoupled Queue, Inclusive cache (L2), Instruction Bytes Buffer,Two Level BTB and Sub Caches for L3. features CPU2006 Specjbb2005 benchmarks., hybrid distributed cache system.4.Hybrid Cache ResearchLast Level Cachehybrid cache CPU2006benchmarksbenchmarkShared LLC40% Private LLC 76%, 7%2004.10 - 2007.071000-20002004.10 - 2007.071Callix RTOS Embos + Arm 9PLC(Programble Logic Controler),Boot up, 200%2 W3100A2005.05 - 1994.07 - 1998.07 CPU (x86 )Linux and tcp/ipCPU6 Linux kernel, glibc, Intel proprietary IA optimized library, Fedora, Android, Meego , Windows IT :CPU Intel x86 CPU Core i7 Atom , cac