reference:GitHub - raas/mbw: Memory Bandwidth Benchmark
https://github.com/JayHeng/cortex-m-apps
由于RT1170上面没有SDRAM的带宽测试工具，所以通过移植mbw工程至SoC,用于SDRAM的测量。
root@iZuf6anc2b2vgfvms9d7elZ:~# git clone https://github.com/raas/mbw.gitCloning into 'mbw'...remote: Enumerating objects: 113, done.remote: Counting objects: 100% (28/28), done.remote: Compressing objects: 100% (22/22), done.remote: Total 113 (delta 12), reused 13 (delta 6), pack-reused 85Receiving objects: 100% (113/113), 27.80 KiB | 9.27 MiB/s, done.Resolving deltas: 100% (55/55), done.root@iZuf6anc2b2vgfvms9d7elZ:~# cd mbw/root@iZuf6anc2b2vgfvms9d7elZ:~/mbw# lsCMakeLists.txt Makefile mbw.1 mbw.c mbw.spec READMEroot@iZuf6anc2b2vgfvms9d7elZ:~/mbw# makecc mbw.c -o mbwroot@iZuf6anc2b2vgfvms9d7elZ:~/mbw# lsCMakeLists.txt Makefile mbw mbw.1 mbw.c mbw.spec READMEroot@iZuf6anc2b2vgfvms9d7elZ:~/mbw# ./mbw --help./mbw: invalid option -- '-'mbw memory benchmark v1.5, https://github.com/raas/mbwUsage: mbw [options] array_size_in_MiBOptions: -n: number of runs per test (0 to run forever) -a: Don't display average -t0: memcpy test -t1: dumb (b[i]=a[i] style) test -t2: memcpy test with fixed block size -b : block size in bytes for -t2 (default: 262144) -q: quiet (print statistics only)(will then use two arrays, watch out for swapping)'Bandwidth' is amount of data copied over the time this operation took.The default is to run all tests available.root@iZuf6anc2b2vgfvms9d7elZ:~/mbw# ./mbw -q -n 1 2560 Method: MEMCPY Elapsed: 0.29554 MiB: 256.00000 Copy: 866.220 MiB/sAVG Method: MEMCPY Elapsed: 0.29554 MiB: 256.00000 Copy: 866.220 MiB/s0 Method: DUMB Elapsed: 0.54065 MiB: 256.00000 Copy: 473.501 MiB/sAVG Method: DUMB Elapsed: 0.54065 MiB: 256.00000 Copy: 473.501 MiB/s0 Method: MCBLOCK Elapsed: 0.34296 MiB: 256.00000 Copy: 746.438 MiB/sAVG Method: MCBLOCK Elapsed: 0.34296 MiB: 256.00000 Copy: 746.438 MiB/s-n 10表示运行1次，256表示测试所用的内存大小，单位为MB。mbw测试了MEMCPY、DUMB、MCBLOCK等方式的内存带宽。 复制mbw目前至工程
将相关文件添加入工程当中
将添加相关的头文件路径：
增加相关的测试代码如下：
主要的移植工作还是参考他人的修改，理解其中的原理，换到别的平台上面一样可以实现的。
测试日记：
CPU 800M SDRAM 163M 512K0 Method: MEMCPY Elapsed: 0.00806 MiB: 0.50000 Copy: 62.012 MiB/s1 Method: MEMCPY Elapsed: 0.00789 MiB: 0.50000 Copy: 63.379 MiB/s2 Method: MEMCPY Elapsed: 0.00789 MiB: 0.50000 Copy: 63.379 MiB/s3 Method: MEMCPY Elapsed: 0.00763 MiB: 0.50000 Copy: 65.514 MiB/s4 Method: MEMCPY Elapsed: 0.00768 MiB: 0.50000 Copy: 65.138 MiB/s5 Method: MEMCPY Elapsed: 0.00767 MiB: 0.50000 Copy: 65.215 MiB/s6 Method: MEMCPY Elapsed: 0.00765 MiB: 0.50000 Copy: 65.342 MiB/s7 Method: MEMCPY Elapsed: 0.00763 MiB: 0.50000 Copy: 65.496 MiB/s8 Method: MEMCPY Elapsed: 0.00760 MiB: 0.50000 Copy: 65.781 MiB/s9 Method: MEMCPY Elapsed: 0.00773 MiB: 0.50000 Copy: 64.650 MiB/sAVG Method: MEMCPY Elapsed: 0.00774 MiB: 0.50000 Copy: 64.569 MiB/s0 Method: DUMB Elapsed: 0.00764 MiB: 0.50000 Copy: 65.454 MiB/s1 Method: DUMB Elapsed: 0.00759 MiB: 0.50000 Copy: 65.841 MiB/s2 Method: DUMB Elapsed: 0.00769 MiB: 0.50000 Copy: 65.028 MiB/s3 Method: DUMB Elapsed: 0.00763 MiB: 0.50000 Copy: 65.557 MiB/s4 Method: DUMB Elapsed: 0.00758 MiB: 0.50000 Copy: 65.946 MiB/s5 Method: DUMB Elapsed: 0.00766 MiB: 0.50000 Copy: 65.283 MiB/s6 Method: DUMB Elapsed: 0.00767 MiB: 0.50000 Copy: 65.189 MiB/s7 Method: DUMB Elapsed: 0.00764 MiB: 0.50000 Copy: 65.479 MiB/s8 Method: DUMB Elapsed: 0.00767 MiB: 0.50000 Copy: 65.189 MiB/s9 Method: DUMB Elapsed: 0.00765 MiB: 0.50000 Copy: 65.377 MiB/sAVG Method: DUMB Elapsed: 0.00764 MiB: 0.50000 Copy: 65.433 MiB/s0 Method: MCBLOCK Elapsed: 0.00766 MiB: 0.50000 Copy: 65.266 MiB/s1 Method: MCBLOCK Elapsed: 0.00769 MiB: 0.50000 Copy: 65.028 MiB/s2 Method: MCBLOCK Elapsed: 0.00767 MiB: 0.50000 Copy: 65.198 MiB/s3 Method: MCBLOCK Elapsed: 0.00765 MiB: 0.50000 Copy: 65.325 MiB/s4 Method: MCBLOCK Elapsed: 0.00761 MiB: 0.50000 Copy: 65.746 MiB/s5 Method: MCBLOCK Elapsed: 0.00772 MiB: 0.50000 Copy: 64.784 MiB/s6 Method: MCBLOCK Elapsed: 0.00760 MiB: 0.50000 Copy: 65.764 MiB/s7 Method: MCBLOCK Elapsed: 0.00766 MiB: 0.50000 Copy: 65.240 MiB/s8 Method: MCBLOCK Elapsed: 0.00764 MiB: 0.50000 Copy: 65.428 MiB/s9 Method: MCBLOCK Elapsed: 0.00759 MiB: 0.50000 Copy: 65.894 MiB/sAVG Method: MCBLOCK Elapsed: 0.00765 MiB: 0.50000 Copy: 65.365 MiB/sCPU 800M SDRAM 163M 32M0 Method: MEMCPY Elapsed: 0.25758 MiB: 16.00000 Copy: 62.117 MiB/s1 Method: MEMCPY Elapsed: 0.25740 MiB: 16.00000 Copy: 62.159 MiB/s2 Method: MEMCPY Elapsed: 0.25724 MiB: 16.00000 Copy: 62.199 MiB/s3 Method: MEMCPY Elapsed: 0.25724 MiB: 16.00000 Copy: 62.198 MiB/s4 Method: MEMCPY Elapsed: 0.25732 MiB: 16.00000 Copy: 62.181 MiB/s5 Method: MEMCPY Elapsed: 0.25723 MiB: 16.00000 Copy: 62.202 MiB/s6 Method: MEMCPY Elapsed: 0.25717 MiB: 16.00000 Copy: 62.215 MiB/s7 Method: MEMCPY Elapsed: 0.25723 MiB: 16.00000 Copy: 62.201 MiB/s8 Method: MEMCPY Elapsed: 0.25718 MiB: 16.00000 Copy: 62.212 MiB/s9 Method: MEMCPY Elapsed: 0.25718 MiB: 16.00000 Copy: 62.213 MiB/sAVG Method: MEMCPY Elapsed: 0.25728 MiB: 16.00000 Copy: 62.190 MiB/s0 Method: DUMB Elapsed: 0.25719 MiB: 16.00000 Copy: 62.212 MiB/s1 Method: DUMB Elapsed: 0.25713 MiB: 16.00000 Copy: 62.225 MiB/s2 Method: DUMB Elapsed: 0.25717 MiB: 16.00000 Copy: 62.215 MiB/s3 Method: DUMB Elapsed: 0.25717 MiB: 16.00000 Copy: 62.215 MiB/s4 Method: DUMB Elapsed: 0.25726 MiB: 16.00000 Copy: 62.193 MiB/s5 Method: DUMB Elapsed: 0.25708 MiB: 16.00000 Copy: 62.237 MiB/s6 Method: DUMB Elapsed: 0.25718 MiB: 16.00000 Copy: 62.213 MiB/s7 Method: DUMB Elapsed: 0.25718 MiB: 16.00000 Copy: 62.213 MiB/s8 Method: DUMB Elapsed: 0.25725 MiB: 16.00000 Copy: 62.197 MiB/s9 Method: DUMB Elapsed: 0.25711 MiB: 16.00000 Copy: 62.230 MiB/sAVG Method: DUMB Elapsed: 0.25717 MiB: 16.00000 Copy: 62.215 MiB/s0 Method: MCBLOCK Elapsed: 0.25722 MiB: 16.00000 Copy: 62.204 MiB/s1 Method: MCBLOCK Elapsed: 0.25727 MiB: 16.00000 Copy: 62.191 MiB/s2 Method: MCBLOCK Elapsed: 0.25711 MiB: 16.00000 Copy: 62.230 MiB/s3 Method: MCBLOCK Elapsed: 0.25728 MiB: 16.00000 Copy: 62.190 MiB/s4 Method: MCBLOCK Elapsed: 0.25721 MiB: 16.00000 Copy: 62.205 MiB/s5 Method: MCBLOCK Elapsed: 0.25714 MiB: 16.00000 Copy: 62.222 MiB/s6 Method: MCBLOCK Elapsed: 0.25722 MiB: 16.00000 Copy: 62.205 MiB/s7 Method: MCBLOCK Elapsed: 0.25716 MiB: 16.00000 Copy: 62.219 MiB/s8 Method: MCBLOCK Elapsed: 0.25717 MiB: 16.00000 Copy: 62.214 MiB/s9 Method: MCBLOCK Elapsed: 0.25724 MiB: 16.00000 Copy: 62.198 MiB/sAVG Method: MCBLOCK Elapsed: 0.25720 MiB: 16.00000 Copy: 62.208 MiB/skCLOCK_CpuClk clock 798000000 kCLOCK_ArmPll clock 798000000 kCLOCK_SysPll1 clock 1000000000 kCLOCK_SysPll2 clock 528000000 kCLOCK_SysPll3 clock 480000000 kCLOCK_SysPll2Out clock 528000000 kCLOCK_SysPll2Pfd1 clock 327724128 kCLOCK_SysPll3Pfd0 clock 664615368 kCLOCK_Root_Semc clock 163862064 kCLOCK_Root_Flexspi1 clock 132000000 CPU 1000M SDRAM 163M 512K0 Method: MEMCPY Elapsed: 0.00806 MiB: 0.50000 Copy: 62.019 MiB/s1 Method: MEMCPY Elapsed: 0.00787 MiB: 0.50000 Copy: 63.500 MiB/s2 Method: MEMCPY Elapsed: 0.00788 MiB: 0.50000 Copy: 63.492 MiB/s3 Method: MEMCPY Elapsed: 0.00770 MiB: 0.50000 Copy: 64.935 MiB/s4 Method: MEMCPY Elapsed: 0.00771 MiB: 0.50000 Copy: 64.859 MiB/s5 Method: MEMCPY Elapsed: 0.00770 MiB: 0.50000 Copy: 64.901 MiB/s6 Method: MEMCPY Elapsed: 0.00771 MiB: 0.50000 Copy: 64.868 MiB/s7 Method: MEMCPY Elapsed: 0.00773 MiB: 0.50000 Copy: 64.658 MiB/s8 Method: MEMCPY Elapsed: 0.00757 MiB: 0.50000 Copy: 66.033 MiB/s9 Method: MEMCPY Elapsed: 0.00760 MiB: 0.50000 Copy: 65.764 MiB/sAVG Method: MEMCPY Elapsed: 0.00775 MiB: 0.50000 Copy: 64.483 MiB/s0 Method: DUMB Elapsed: 0.00768 MiB: 0.50000 Copy: 65.121 MiB/s1 Method: DUMB Elapsed: 0.00765 MiB: 0.50000 Copy: 65.359 MiB/s2 Method: DUMB Elapsed: 0.00763 MiB: 0.50000 Copy: 65.574 MiB/s3 Method: DUMB Elapsed: 0.00763 MiB: 0.50000 Copy: 65.531 MiB/s4 Method: DUMB Elapsed: 0.00760 MiB: 0.50000 Copy: 65.781 MiB/s5 Method: DUMB Elapsed: 0.00758 MiB: 0.50000 Copy: 65.972 MiB/s6 Method: DUMB Elapsed: 0.00763 MiB: 0.50000 Copy: 65.496 MiB/s7 Method: DUMB Elapsed: 0.00758 MiB: 0.50000 Copy: 65.937 MiB/s8 Method: DUMB Elapsed: 0.00772 MiB: 0.50000 Copy: 64.784 MiB/s9 Method: DUMB Elapsed: 0.00766 MiB: 0.50000 Copy: 65.308 MiB/sAVG Method: DUMB Elapsed: 0.00764 MiB: 0.50000 Copy: 65.484 MiB/s0 Method: MCBLOCK Elapsed: 0.00763 MiB: 0.50000 Copy: 65.505 MiB/s1 Method: MCBLOCK Elapsed: 0.00769 MiB: 0.50000 Copy: 64.977 MiB/s2 Method: MCBLOCK Elapsed: 0.00774 MiB: 0.50000 Copy: 64.599 MiB/s3 Method: MCBLOCK Elapsed: 0.00759 MiB: 0.50000 Copy: 65.894 MiB/s4 Method: MCBLOCK Elapsed: 0.00769 MiB: 0.50000 Copy: 64.986 MiB/s5 Method: MCBLOCK Elapsed: 0.00767 MiB: 0.50000 Copy: 65.189 MiB/s6 Method: MCBLOCK Elapsed: 0.00763 MiB: 0.50000 Copy: 65.505 MiB/s7 Method: MCBLOCK Elapsed: 0.00771 MiB: 0.50000 Copy: 64.885 MiB/s8 Method: MCBLOCK Elapsed: 0.00766 MiB: 0.50000 Copy: 65.317 MiB/s9 Method: MCBLOCK Elapsed: 0.00763 MiB: 0.50000 Copy: 65.539 MiB/sAVG Method: MCBLOCK Elapsed: 0.00766 MiB: 0.50000 Copy: 65.238 MiB/sCPU 1000M SDRAM 163M 32M0 Method: MEMCPY Elapsed: 0.25758 MiB: 16.00000 Copy: 62.117 MiB/s1 Method: MEMCPY Elapsed: 0.25740 MiB: 16.00000 Copy: 62.161 MiB/s2 Method: MEMCPY Elapsed: 0.25739 MiB: 16.00000 Copy: 62.162 MiB/s3 Method: MEMCPY Elapsed: 0.25722 MiB: 16.00000 Copy: 62.204 MiB/s4 Method: MEMCPY Elapsed: 0.25723 MiB: 16.00000 Copy: 62.201 MiB/s5 Method: MEMCPY Elapsed: 0.25717 MiB: 16.00000 Copy: 62.217 MiB/s6 Method: MEMCPY Elapsed: 0.25716 MiB: 16.00000 Copy: 62.219 MiB/s7 Method: MEMCPY Elapsed: 0.25711 MiB: 16.00000 Copy: 62.229 MiB/s8 Method: MEMCPY Elapsed: 0.25720 MiB: 16.00000 Copy: 62.208 MiB/s9 Method: MEMCPY Elapsed: 0.25724 MiB: 16.00000 Copy: 62.200 MiB/sAVG Method: MEMCPY Elapsed: 0.25727 MiB: 16.00000 Copy: 62.192 MiB/s0 Method: DUMB Elapsed: 0.25716 MiB: 16.00000 Copy: 62.219 MiB/s1 Method: DUMB Elapsed: 0.25717 MiB: 16.00000 Copy: 62.217 MiB/s2 Method: DUMB Elapsed: 0.25711 MiB: 16.00000 Copy: 62.229 MiB/s3 Method: DUMB Elapsed: 0.25733 MiB: 16.00000 Copy: 62.176 MiB/s4 Method: DUMB Elapsed: 0.25706 MiB: 16.00000 Copy: 62.242 MiB/s5 Method: DUMB Elapsed: 0.25721 MiB: 16.00000 Copy: 62.205 MiB/s6 Method: DUMB Elapsed: 0.25710 MiB: 16.00000 Copy: 62.234 MiB/s7 Method: DUMB Elapsed: 0.25723 MiB: 16.00000 Copy: 62.201 MiB/s8 Method: DUMB Elapsed: 0.25716 MiB: 16.00000 Copy: 62.218 MiB/s9 Method: DUMB Elapsed: 0.25719 MiB: 16.00000 Copy: 62.211 MiB/sAVG Method: DUMB Elapsed: 0.25717 MiB: 16.00000 Copy: 62.215 MiB/s0 Method: MCBLOCK Elapsed: 0.25722 MiB: 16.00000 Copy: 62.205 MiB/s1 Method: MCBLOCK Elapsed: 0.25719 MiB: 16.00000 Copy: 62.211 MiB/s2 Method: MCBLOCK Elapsed: 0.25715 MiB: 16.00000 Copy: 62.220 MiB/s3 Method: MCBLOCK Elapsed: 0.25716 MiB: 16.00000 Copy: 62.217 MiB/s4 Method: MCBLOCK Elapsed: 0.25707 MiB: 16.00000 Copy: 62.239 MiB/s5 Method: MCBLOCK Elapsed: 0.25728 MiB: 16.00000 Copy: 62.189 MiB/s6 Method: MCBLOCK Elapsed: 0.25714 MiB: 16.00000 Copy: 62.223 MiB/s7 Method: MCBLOCK Elapsed: 0.25725 MiB: 16.00000 Copy: 62.197 MiB/s8 Method: MCBLOCK Elapsed: 0.25709 MiB: 16.00000 Copy: 62.234 MiB/s9 Method: MCBLOCK Elapsed: 0.25722 MiB: 16.00000 Copy: 62.204 MiB/sAVG Method: MCBLOCK Elapsed: 0.25718 MiB: 16.00000 Copy: 62.214 MiB/sCPU 800M SDRAM 198M 512K0 Method: MEMCPY Elapsed: 0.00730 MiB: 0.50000 Copy: 68.503 MiB/s1 Method: MEMCPY Elapsed: 0.00714 MiB: 0.50000 Copy: 70.057 MiB/s2 Method: MEMCPY Elapsed: 0.00713 MiB: 0.50000 Copy: 70.136 MiB/s3 Method: MEMCPY Elapsed: 0.00706 MiB: 0.50000 Copy: 70.781 MiB/s4 Method: MEMCPY Elapsed: 0.00698 MiB: 0.50000 Copy: 71.674 MiB/s5 Method: MEMCPY Elapsed: 0.00687 MiB: 0.50000 Copy: 72.812 MiB/s6 Method: MEMCPY Elapsed: 0.00689 MiB: 0.50000 Copy: 72.548 MiB/s7 Method: MEMCPY Elapsed: 0.00690 MiB: 0.50000 Copy: 72.464 MiB/s8 Method: MEMCPY Elapsed: 0.00683 MiB: 0.50000 Copy: 73.217 MiB/s9 Method: MEMCPY Elapsed: 0.00689 MiB: 0.50000 Copy: 72.622 MiB/sAVG Method: MEMCPY Elapsed: 0.00700 MiB: 0.50000 Copy: 71.451 MiB/s0 Method: DUMB Elapsed: 0.00680 MiB: 0.50000 Copy: 73.508 MiB/s1 Method: DUMB Elapsed: 0.00687 MiB: 0.50000 Copy: 72.738 MiB/s2 Method: DUMB Elapsed: 0.00681 MiB: 0.50000 Copy: 73.368 MiB/s3 Method: DUMB Elapsed: 0.00685 MiB: 0.50000 Copy: 72.950 MiB/s4 Method: DUMB Elapsed: 0.00686 MiB: 0.50000 Copy: 72.876 MiB/s5 Method: DUMB Elapsed: 0.00692 MiB: 0.50000 Copy: 72.275 MiB/s6 Method: DUMB Elapsed: 0.00687 MiB: 0.50000 Copy: 72.791 MiB/s7 Method: DUMB Elapsed: 0.00688 MiB: 0.50000 Copy: 72.653 MiB/s8 Method: DUMB Elapsed: 0.00680 MiB: 0.50000 Copy: 73.584 MiB/s9 Method: DUMB Elapsed: 0.00685 MiB: 0.50000 Copy: 72.993 MiB/sAVG Method: DUMB Elapsed: 0.00685 MiB: 0.50000 Copy: 72.971 MiB/s0 Method: MCBLOCK Elapsed: 0.00693 MiB: 0.50000 Copy: 72.119 MiB/s1 Method: MCBLOCK Elapsed: 0.00695 MiB: 0.50000 Copy: 71.901 MiB/s2 Method: MCBLOCK Elapsed: 0.00695 MiB: 0.50000 Copy: 71.922 MiB/s3 Method: MCBLOCK Elapsed: 0.00695 MiB: 0.50000 Copy: 71.942 MiB/s4 Method: MCBLOCK Elapsed: 0.00692 MiB: 0.50000 Copy: 72.233 MiB/s5 Method: MCBLOCK Elapsed: 0.00692 MiB: 0.50000 Copy: 72.233 MiB/s6 Method: MCBLOCK Elapsed: 0.00698 MiB: 0.50000 Copy: 71.592 MiB/s7 Method: MCBLOCK Elapsed: 0.00709 MiB: 0.50000 Copy: 70.532 MiB/s8 Method: MCBLOCK Elapsed: 0.00693 MiB: 0.50000 Copy: 72.181 MiB/s9 Method: MCBLOCK Elapsed: 0.00696 MiB: 0.50000 Copy: 71.870 MiB/sAVG Method: MCBLOCK Elapsed: 0.00696 MiB: 0.50000 Copy: 71.849 MiB/sCPU 800M SDRAM 198M 32M0 Method: MEMCPY Elapsed: 0.23245 MiB: 16.00000 Copy: 68.831 MiB/s1 Method: MEMCPY Elapsed: 0.23230 MiB: 16.00000 Copy: 68.878 MiB/s2 Method: MEMCPY Elapsed: 0.23214 MiB: 16.00000 Copy: 68.923 MiB/s3 Method: MEMCPY Elapsed: 0.23214 MiB: 16.00000 Copy: 68.925 MiB/s4 Method: MEMCPY Elapsed: 0.23203 MiB: 16.00000 Copy: 68.957 MiB/s5 Method: MEMCPY Elapsed: 0.23199 MiB: 16.00000 Copy: 68.968 MiB/s6 Method: MEMCPY Elapsed: 0.23211 MiB: 16.00000 Copy: 68.934 MiB/s7 Method: MEMCPY Elapsed: 0.23197 MiB: 16.00000 Copy: 68.974 MiB/s8 Method: MEMCPY Elapsed: 0.23199 MiB: 16.00000 Copy: 68.967 MiB/s9 Method: MEMCPY Elapsed: 0.23210 MiB: 16.00000 Copy: 68.937 MiB/sAVG Method: MEMCPY Elapsed: 0.23212 MiB: 16.00000 Copy: 68.929 MiB/s0 Method: DUMB Elapsed: 0.23133 MiB: 16.00000 Copy: 69.166 MiB/s1 Method: DUMB Elapsed: 0.23156 MiB: 16.00000 Copy: 69.097 MiB/s2 Method: DUMB Elapsed: 0.23126 MiB: 16.00000 Copy: 69.186 MiB/s3 Method: DUMB Elapsed: 0.23128 MiB: 16.00000 Copy: 69.179 MiB/s4 Method: DUMB Elapsed: 0.23134 MiB: 16.00000 Copy: 69.163 MiB/s5 Method: DUMB Elapsed: 0.23120 MiB: 16.00000 Copy: 69.205 MiB/s6 Method: DUMB Elapsed: 0.23129 MiB: 16.00000 Copy: 69.177 MiB/s7 Method: DUMB Elapsed: 0.23118 MiB: 16.00000 Copy: 69.211 MiB/s8 Method: DUMB Elapsed: 0.23117 MiB: 16.00000 Copy: 69.212 MiB/s9 Method: DUMB Elapsed: 0.23131 MiB: 16.00000 Copy: 69.172 MiB/sAVG Method: DUMB Elapsed: 0.23129 MiB: 16.00000 Copy: 69.177 MiB/s0 Method: MCBLOCK Elapsed: 0.23211 MiB: 16.00000 Copy: 68.931 MiB/s1 Method: MCBLOCK Elapsed: 0.23215 MiB: 16.00000 Copy: 68.920 MiB/s2 Method: MCBLOCK Elapsed: 0.23210 MiB: 16.00000 Copy: 68.936 MiB/s3 Method: MCBLOCK Elapsed: 0.23212 MiB: 16.00000 Copy: 68.930 MiB/s4 Method: MCBLOCK Elapsed: 0.23205 MiB: 16.00000 Copy: 68.950 MiB/s5 Method: MCBLOCK Elapsed: 0.23210 MiB: 16.00000 Copy: 68.936 MiB/s6 Method: MCBLOCK Elapsed: 0.23217 MiB: 16.00000 Copy: 68.914 MiB/s7 Method: MCBLOCK Elapsed: 0.23205 MiB: 16.00000 Copy: 68.950 MiB/s8 Method: MCBLOCK Elapsed: 0.23208 MiB: 16.00000 Copy: 68.941 MiB/s9 Method: MCBLOCK Elapsed: 0.23216 MiB: 16.00000 Copy: 68.917 MiB/sAVG Method: MCBLOCK Elapsed: 0.23211 MiB: 16.00000 Copy: 68.933 MiB/skCLOCK_CpuClk clock 798000000 kCLOCK_ArmPll clock 798000000 kCLOCK_SysPll1 clock 1000000000 kCLOCK_SysPll2 clock 528000000 kCLOCK_SysPll3 clock 480000000 kCLOCK_SysPll2Out clock 528000000 kCLOCK_SysPll2Pfd1 clock 594000000 kCLOCK_SysPll3Pfd0 clock 664615368 kCLOCK_Root_Semc clock 198000000 kCLOCK_Root_Flexspi1 clock 132000000 CPU 1000M SDRAM 198M 32M0 Method: MEMCPY Elapsed: 0.23045 MiB: 16.00000 Copy: 69.431 MiB/s1 Method: MEMCPY Elapsed: 0.23029 MiB: 16.00000 Copy: 69.479 MiB/s2 Method: MEMCPY Elapsed: 0.23026 MiB: 16.00000 Copy: 69.486 MiB/s3 Method: MEMCPY Elapsed: 0.23006 MiB: 16.00000 Copy: 69.546 MiB/s4 Method: MEMCPY Elapsed: 0.23015 MiB: 16.00000 Copy: 69.520 MiB/s5 Method: MEMCPY Elapsed: 0.23009 MiB: 16.00000 Copy: 69.538 MiB/s6 Method: MEMCPY Elapsed: 0.23009 MiB: 16.00000 Copy: 69.539 MiB/s7 Method: MEMCPY Elapsed: 0.22996 MiB: 16.00000 Copy: 69.576 MiB/s8 Method: MEMCPY Elapsed: 0.23010 MiB: 16.00000 Copy: 69.534 MiB/s9 Method: MEMCPY Elapsed: 0.23007 MiB: 16.00000 Copy: 69.546 MiB/sAVG Method: MEMCPY Elapsed: 0.23015 MiB: 16.00000 Copy: 69.520 MiB/s0 Method: DUMB Elapsed: 0.22888 MiB: 16.00000 Copy: 69.906 MiB/s1 Method: DUMB Elapsed: 0.22887 MiB: 16.00000 Copy: 69.909 MiB/s2 Method: DUMB Elapsed: 0.22882 MiB: 16.00000 Copy: 69.924 MiB/s3 Method: DUMB Elapsed: 0.22901 MiB: 16.00000 Copy: 69.866 MiB/s4 Method: DUMB Elapsed: 0.22879 MiB: 16.00000 Copy: 69.933 MiB/s5 Method: DUMB Elapsed: 0.22892 MiB: 16.00000 Copy: 69.894 MiB/s6 Method: DUMB Elapsed: 0.22883 MiB: 16.00000 Copy: 69.922 MiB/s7 Method: DUMB Elapsed: 0.22893 MiB: 16.00000 Copy: 69.889 MiB/s8 Method: DUMB Elapsed: 0.22887 MiB: 16.00000 Copy: 69.908 MiB/s9 Method: DUMB Elapsed: 0.22891 MiB: 16.00000 Copy: 69.895 MiB/sAVG Method: DUMB Elapsed: 0.22888 MiB: 16.00000 Copy: 69.905 MiB/s0 Method: MCBLOCK Elapsed: 0.23009 MiB: 16.00000 Copy: 69.537 MiB/s1 Method: MCBLOCK Elapsed: 0.23010 MiB: 16.00000 Copy: 69.536 MiB/s2 Method: MCBLOCK Elapsed: 0.23008 MiB: 16.00000 Copy: 69.541 MiB/s3 Method: MCBLOCK Elapsed: 0.23005 MiB: 16.00000 Copy: 69.551 MiB/s4 Method: MCBLOCK Elapsed: 0.22999 MiB: 16.00000 Copy: 69.568 MiB/s5 Method: MCBLOCK Elapsed: 0.23010 MiB: 16.00000 Copy: 69.534 MiB/s6 Method: MCBLOCK Elapsed: 0.22998 MiB: 16.00000 Copy: 69.572 MiB/s7 Method: MCBLOCK Elapsed: 0.23016 MiB: 16.00000 Copy: 69.518 MiB/s8 Method: MCBLOCK Elapsed: 0.23002 MiB: 16.00000 Copy: 69.560 MiB/s9 Method: MCBLOCK Elapsed: 0.23013 MiB: 16.00000 Copy: 69.525 MiB/sAVG Method: MCBLOCK Elapsed: 0.23007 MiB: 16.00000 Copy: 69.544 MiB/sCPU 1000M SDRAM 198M 512K0 Method: MEMCPY Elapsed: 0.00722 MiB: 0.50000 Copy: 69.262 MiB/s1 Method: MEMCPY Elapsed: 0.00721 MiB: 0.50000 Copy: 69.367 MiB/s2 Method: MEMCPY Elapsed: 0.00706 MiB: 0.50000 Copy: 70.862 MiB/s3 Method: MEMCPY Elapsed: 0.00691 MiB: 0.50000 Copy: 72.401 MiB/s4 Method: MEMCPY Elapsed: 0.00690 MiB: 0.50000 Copy: 72.422 MiB/s5 Method: MEMCPY Elapsed: 0.00690 MiB: 0.50000 Copy: 72.474 MiB/s6 Method: MEMCPY Elapsed: 0.00690 MiB: 0.50000 Copy: 72.495 MiB/s7 Method: MEMCPY Elapsed: 0.00691 MiB: 0.50000 Copy: 72.317 MiB/s8 Method: MEMCPY Elapsed: 0.00677 MiB: 0.50000 Copy: 73.866 MiB/s9 Method: MEMCPY Elapsed: 0.00678 MiB: 0.50000 Copy: 73.735 MiB/sAVG Method: MEMCPY Elapsed: 0.00696 MiB: 0.50000 Copy: 71.888 MiB/s0 Method: DUMB Elapsed: 0.00677 MiB: 0.50000 Copy: 73.877 MiB/s1 Method: DUMB Elapsed: 0.00686 MiB: 0.50000 Copy: 72.876 MiB/s2 Method: DUMB Elapsed: 0.00675 MiB: 0.50000 Copy: 74.085 MiB/s3 Method: DUMB Elapsed: 0.00676 MiB: 0.50000 Copy: 73.921 MiB/s4 Method: DUMB Elapsed: 0.00687 MiB: 0.50000 Copy: 72.823 MiB/s5 Method: DUMB Elapsed: 0.00685 MiB: 0.50000 Copy: 72.950 MiB/s6 Method: DUMB Elapsed: 0.00678 MiB: 0.50000 Copy: 73.703 MiB/s7 Method: DUMB Elapsed: 0.00681 MiB: 0.50000 Copy: 73.400 MiB/s8 Method: DUMB Elapsed: 0.00686 MiB: 0.50000 Copy: 72.939 MiB/s9 Method: DUMB Elapsed: 0.00678 MiB: 0.50000 Copy: 73.790 MiB/sAVG Method: DUMB Elapsed: 0.00681 MiB: 0.50000 Copy: 73.433 MiB/s0 Method: MCBLOCK Elapsed: 0.00684 MiB: 0.50000 Copy: 73.057 MiB/s1 Method: MCBLOCK Elapsed: 0.00687 MiB: 0.50000 Copy: 72.748 MiB/s2 Method: MCBLOCK Elapsed: 0.00685 MiB: 0.50000 Copy: 73.003 MiB/s3 Method: MCBLOCK Elapsed: 0.00692 MiB: 0.50000 Copy: 72.275 MiB/s4 Method: MCBLOCK Elapsed: 0.00692 MiB: 0.50000 Copy: 72.296 MiB/s5 Method: MCBLOCK Elapsed: 0.00694 MiB: 0.50000 Copy: 72.046 MiB/s6 Method: MCBLOCK Elapsed: 0.00685 MiB: 0.50000 Copy: 73.014 MiB/s7 Method: MCBLOCK Elapsed: 0.00687 MiB: 0.50000 Copy: 72.780 MiB/s8 Method: MCBLOCK Elapsed: 0.00686 MiB: 0.50000 Copy: 72.918 MiB/s9 Method: MCBLOCK Elapsed: 0.00688 MiB: 0.50000 Copy: 72.696 MiB/sAVG Method: MCBLOCK Elapsed: 0.00688 MiB: 0.50000 Copy: 72.682 MiB/s版内的内存：CPU 800M 512K0 Method: MEMCPY Elapsed: 0.00186 MiB: 0.50000 Copy: 268.384 MiB/s1 Method: MEMCPY Elapsed: 0.00182 MiB: 0.50000 Copy: 274.424 MiB/s2 Method: MEMCPY Elapsed: 0.00179 MiB: 0.50000 Copy: 278.862 MiB/s3 Method: MEMCPY Elapsed: 0.00179 MiB: 0.50000 Copy: 279.330 MiB/s4 Method: MEMCPY Elapsed: 0.00179 MiB: 0.50000 Copy: 279.174 MiB/s5 Method: MEMCPY Elapsed: 0.00179 MiB: 0.50000 Copy: 279.174 MiB/s6 Method: MEMCPY Elapsed: 0.00179 MiB: 0.50000 Copy: 278.707 MiB/s7 Method: MEMCPY Elapsed: 0.00176 MiB: 0.50000 Copy: 283.607 MiB/s8 Method: MEMCPY Elapsed: 0.00176 MiB: 0.50000 Copy: 283.447 MiB/s9 Method: MEMCPY Elapsed: 0.00176 MiB: 0.50000 Copy: 284.414 MiB/sAVG Method: MEMCPY Elapsed: 0.00179 MiB: 0.50000 Copy: 278.878 MiB/s0 Method: DUMB Elapsed: 0.00173 MiB: 0.50000 Copy: 289.017 MiB/s1 Method: DUMB Elapsed: 0.00173 MiB: 0.50000 Copy: 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Method: MCBLOCK Elapsed: 0.00177 MiB: 0.50000 Copy: 282.167 MiB/s7 Method: MCBLOCK Elapsed: 0.00180 MiB: 0.50000 Copy: 278.396 MiB/s8 Method: MCBLOCK Elapsed: 0.00177 MiB: 0.50000 Copy: 282.965 MiB/s9 Method: MCBLOCK Elapsed: 0.00180 MiB: 0.50000 Copy: 277.778 MiB/sAVG Method: MCBLOCK Elapsed: 0.00178 MiB: 0.50000 Copy: 280.473 MiB/sCPU 1000M 512K0 Method: MEMCPY Elapsed: 0.00176 MiB: 0.50000 Copy: 283.768 MiB/s1 Method: MEMCPY Elapsed: 0.00175 MiB: 0.50000 Copy: 285.388 MiB/s2 Method: MEMCPY Elapsed: 0.00175 MiB: 0.50000 Copy: 285.714 MiB/s3 Method: MEMCPY Elapsed: 0.00174 MiB: 0.50000 Copy: 287.853 MiB/s4 Method: MEMCPY Elapsed: 0.00175 MiB: 0.50000 Copy: 286.041 MiB/s5 Method: MEMCPY Elapsed: 0.00175 MiB: 0.50000 Copy: 286.533 MiB/s6 Method: MEMCPY Elapsed: 0.00175 MiB: 0.50000 Copy: 286.369 MiB/s7 Method: MEMCPY Elapsed: 0.00175 MiB: 0.50000 Copy: 285.878 MiB/s8 Method: MEMCPY Elapsed: 0.00175 MiB: 0.50000 Copy: 285.878 MiB/s9 Method: MEMCPY Elapsed: 0.00175 MiB: 0.50000 Copy: 286.205 MiB/sAVG Method: MEMCPY Elapsed: 0.00175 MiB: 0.50000 Copy: 285.959 MiB/s0 Method: DUMB Elapsed: 0.00170 MiB: 0.50000 Copy: 294.985 MiB/s1 Method: DUMB Elapsed: 0.00170 MiB: 0.50000 Copy: 294.985 MiB/s2 Method: DUMB Elapsed: 0.00170 MiB: 0.50000 Copy: 294.811 MiB/s3 Method: DUMB Elapsed: 0.00170 MiB: 0.50000 Copy: 294.638 MiB/s4 Method: DUMB Elapsed: 0.00170 MiB: 0.50000 Copy: 294.638 MiB/s5 Method: DUMB Elapsed: 0.00170 MiB: 0.50000 Copy: 294.985 MiB/s6 Method: DUMB Elapsed: 0.00170 MiB: 0.50000 Copy: 294.638 MiB/s7 Method: DUMB Elapsed: 0.00170 MiB: 0.50000 Copy: 294.985 MiB/s8 Method: DUMB Elapsed: 0.00170 MiB: 0.50000 Copy: 294.811 MiB/s9 Method: DUMB Elapsed: 0.00170 MiB: 0.50000 Copy: 294.985 MiB/sAVG Method: DUMB Elapsed: 0.00170 MiB: 0.50000 Copy: 294.846 MiB/s0 Method: MCBLOCK Elapsed: 0.00176 MiB: 0.50000 Copy: 284.091 MiB/s1 Method: MCBLOCK Elapsed: 0.00175 MiB: 0.50000 Copy: 285.551 MiB/s2 Method: MCBLOCK Elapsed: 0.00176 MiB: 0.50000 Copy: 284.576 MiB/s3 Method: MCBLOCK Elapsed: 0.00175 MiB: 0.50000 Copy: 285.388 MiB/s4 Method: MCBLOCK Elapsed: 0.00176 MiB: 0.50000 Copy: 284.576 MiB/s5 Method: MCBLOCK Elapsed: 0.00175 MiB: 0.50000 Copy: 285.388 MiB/s6 Method: MCBLOCK Elapsed: 0.00175 MiB: 0.50000 Copy: 284.900 MiB/s7 Method: MCBLOCK Elapsed: 0.00175 MiB: 0.50000 Copy: 285.388 MiB/s8 Method: MCBLOCK Elapsed: 0.00176 MiB: 0.50000 Copy: 284.738 MiB/s9 Method: MCBLOCK Elapsed: 0.00175 MiB: 0.50000 Copy: 285.551 MiB/sAVG Method: MCBLOCK Elapsed: 0.00175 MiB: 0.50000 Copy: 285.014 MiB/s工具的移植，无非就是时钟接口及内存分配等接口的重新实现。片内及片外的内存到底相差多少，经过测试之后，可以有很明显的数定进行比较。对于我们进行程序优化是相当有益的。下面是本人整理的表格，分享给大家。
希望对各位读者帮助。
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“嵌入式实操”一个分享开发实践经验的地方。
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