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    # 2018q1 Homework1 (phonebook) contributed by < `sabishi` > 向大家學習 ### Reviewed by `catpig1630` * 可以試著參考 [ryanpatiency](https://hackmd.io/vTQq47OpQXmgCFQabvKPSw?both) 同學的詳細解說完成這份作業 ### Reviewed by `f74034067` * 可以試著從大家都有做的降低 entry size 著手 ## 安裝Lubuntu 17.10 * 準備工作 我使用的是 Sandisk CZ80 16GB 的隨身碟 並用 Rufus 軟體將 Lubuntu17.10(amd64)ISO 光碟開機映像檔製作為 USB 開機碟 * 在安裝過程中遇到的問題 本來想嘗試在 UEFI mode 下安裝,但由於開機時無法進入 Lubuntu 安裝畫面 所以我後來改成 Legacy mode 下安裝,才得以安裝 * 原生的 Windows 10 是安裝在 SSD,lubuntu 是裝在硬碟(切割約 50GB 的磁碟空間) ## 系統環境 ``` lucifer@lucifer-Aspire-E5-575G:~$ uname -r 4.13.0-36-generic lucifer@lucifer-Aspire-E5-575G:~$ lscpu Architecture: x86_64 CPU 作業模式: 32-bit, 64-bit Byte Order: Little Endian CPU(s): 4 On-line CPU(s) list: 0-3 每核心執行緒數: 2 每通訊端核心數: 2 Socket(s): 1 NUMA 節點: 1 供應商識別號: GenuineIntel CPU 家族: 6 型號: 142 Model name: Intel(R) Core(TM) i5-7200U CPU @ 2.50GHz 製程: 9 CPU MHz: 2700.000 CPU max MHz: 3100.0000 CPU min MHz: 400.0000 BogoMIPS: 5424.00 虛擬: VT-x L1d 快取: 32K L1i 快取: 32K L2 快取: 256K L3 快取: 3072K NUMA node0 CPU(s): 0-3 Flags: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc art arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc cpuid aperfmperf tsc_known_freq pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch cpuid_fault epb invpcid_single pti retpoline intel_pt rsb_ctxsw tpr_shadow vnmi flexpriority ept vpid fsgsbase tsc_adjust bmi1 avx2 smep bmi2 erms invpcid mpx rdseed adx smap clflushopt xsaveopt xsavec xgetbv1 xsaves dtherm ida arat pln pts hwp hwp_notify hwp_act_window hwp_epp ``` ## 原始實驗紀錄 * 清空快取 ``` $ echo 1 | sudo tee /proc/sys/vm/drop_caches ``` * 部份輸出 ``` $ sudo make cache-test ``` Performance counter stats for './phonebook_orig' (100 runs): 5,859,068 cache-misses # 95.175 % of all cache refs ( +- 0.07% ) 6,156,071 cache-references ( +- 0.08% ) 345,044,188 instructions # 1.45 insn per cycle ( +- 0.02% ) 237,301,062 cycles ( +- 0.08% ) 0.077279138 seconds time elapsed ( +- 0.48% ) ``` $ sudo make-plot ``` ![image alt](https://i.imgur.com/UbmIaZY.png) ## 學習 C 語言和資料結構 由於我沒有學過任何程式,所以目前作業的部份只能做到這邊 希望趕快對C 語言有些認識及深入了解其他資料結構後,可以再度回來編輯這份文件 :::success 好!我等你 :notes: jserv :::

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