{"id":94938,"date":"2026-08-15T18:49:19","date_gmt":"2026-08-15T10:49:19","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/94938.html"},"modified":"2026-08-15T18:49:19","modified_gmt":"2026-08-15T10:49:19","slug":"%e7%94%9f%e4%ba%a7%e5%a4%8d%e7%9b%98%ef%bc%9a%e5%9b%bd%e4%ba%a7%e5%8c%96%e6%9c%8d%e5%8a%a1%e5%99%a8-io-%e7%93%b6%e9%a2%88%e5%af%bc%e8%87%b4%e6%95%b0%e6%8d%ae%e5%ba%93%e6%80%a7%e8%83%bd%e9%9b%aa","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/94938.html","title":{"rendered":"\u751f\u4ea7\u590d\u76d8\uff1a\u56fd\u4ea7\u5316\u670d\u52a1\u5668 IO \u74f6\u9888\u5bfc\u81f4\u6570\u636e\u5e93\u6027\u80fd\u96ea\u5d29\u4f18\u5316\u5b9e\u5f55\uff08\u653f\u52a1\u9879\u76ee\u843d\u5730\uff09"},"content":{"rendered":"

\u6458\u8981<\/h2>\n

\u653f\u52a1\u7cfb\u7edf\u4fe1\u521b\u6539\u9020，\u6570\u636e\u5e93\u4ece x86 \u7269\u7406\u673a\u8fc1\u79fb\u5230\u9cb2\u9e4f 920 \u56fd\u4ea7\u670d\u52a1\u5668 + \u5168\u95ea\u5b58\u50a8，\u672c\u4ee5\u4e3a\u6027\u80fd\u4f1a\u6301\u5e73，\u7ed3\u679c\u4e0a\u7ebf\u9ad8\u5cf0\u671f\u76f4\u63a5\u96ea\u5d29：TPS \u4ece 2000 \u6389\u5230 700，\u5199\u5165\u5ef6\u8fdf\u7ffb 10 \u500d，\u653f\u52a1\u7533\u62a5\u63a5\u53e3\u5927\u9762\u79ef\u8d85\u65f6\u3002\u56e2\u961f\u4e00\u5f00\u59cb\u6b7b\u78d5\u6570\u636e\u5e93\u53c2\u6570\u3001\u4f18\u5316 SQL，\u6298\u817e\u4e09\u5929\u6ca1\u8d77\u8272，\u6700\u540e\u5b9a\u4f4d\u5230\u5e95\u5c42 IO \u6808\u5168\u662f\u9ed8\u8ba4\u914d\u7f6e，\u56fd\u4ea7\u5b58\u50a8 + ARM \u67b6\u6784\u7684\u9002\u914d\u5751\u4e00\u4e2a\u6ca1\u8e29\u5168\u3002<\/p>\n

\u672c\u6587\u57fa\u4e8e\u4e00\u7ebf\u653f\u52a1\u9879\u76ee\u771f\u5b9e\u4f18\u5316\u5b9e\u5f55，\u5b8c\u6574\u8fd8\u539f\u6545\u969c\u6392\u67e5\u5168\u6d41\u7a0b，\u62c6\u89e3\u56fd\u4ea7\u5316\u670d\u52a1\u5668 5 \u5927\u7279\u6709 IO \u5751，\u4ece\u7cfb\u7edf\u5c42\u3001\u5b58\u50a8\u5c42\u3001\u6570\u636e\u5e93\u5c42\u3001\u67b6\u6784\u5c42\u56db\u5c42\u8f93\u51fa\u5168\u94fe\u8def\u4f18\u5316\u65b9\u6848，\u8986\u76d6\u4eba\u5927\u91d1\u4ed3 V9\u3001\u8fbe\u68a6 DM9 \u53cc\u5e93\u4e13\u5c5e\u53c2\u6570，\u9644\u4f18\u5316\u524d\u540e\u5b9e\u6d4b\u5bf9\u6bd4\u3001\u53ef\u76f4\u63a5\u590d\u5236\u7684\u8c03\u4f18\u547d\u4ee4\u3002\u7167\u7740\u505a，\u56fd\u4ea7\u5316\u73af\u5883\u6570\u636e\u5e93 IO \u6027\u80fd\u53ef\u63d0\u5347 2~3 \u500d，\u5ef6\u8fdf\u964d\u4f4e 80% \u4ee5\u4e0a\u3002<\/p>\n

\u653f\u52a1\u9009\u91d1\u4ed3，\u91d1\u878d\u9009\u8fbe\u68a6；MySQL \u8fc1\u79fb\u9009\u91d1\u4ed3，Oracle \u8fc1\u79fb\u9009\u8fbe\u68a6\u3002\u5168\u6587\u65e0\u7a7a\u6cdb\u7406\u8bba，\u6240\u6709\u53c2\u6570\u5747\u7ecf\u8fc7\u56fd\u4ea7 ARM \u670d\u52a1\u5668 + \u5168\u95ea\u5b58\u50a8\u751f\u4ea7\u538b\u6d4b\u9a8c\u8bc1\u3002<\/p>\n

\n

\u4e00\u3001\u751f\u4ea7\u60ca\u9b42：\u8fc1\u5230\u56fd\u4ea7\u670d\u52a1\u5668，\u6570\u636e\u5e93\u6027\u80fd\u76f4\u63a5\u8170\u65a9<\/h3>\n

📌 \u6545\u969c\u80cc\u666f：\u67d0\u5730\u5e02\u653f\u52a1\u670d\u52a1\u7cfb\u7edf\u4fe1\u521b\u6539\u9020，\u6570\u636e\u5e93\u4ece x86 Intel \u670d\u52a1\u5668 + SAS \u5b58\u50a8，\u8fc1\u79fb\u81f3\u9cb2\u9e4f 920 \u56fd\u4ea7\u670d\u52a1\u5668 + \u56fd\u4ea7\u5168\u95ea SSD \u5b58\u50a8，\u6570\u636e\u5e93\u4e3a\u4eba\u5927\u91d1\u4ed3 V9，\u6570\u636e\u91cf\u7ea6 800G，\u65e5\u5e38 TPS \u5cf0\u503c 2000 \u5de6\u53f3\u3002<\/p>\n

1.1 \u5b8c\u6574\u6545\u969c\u65f6\u95f4\u7ebf<\/h4>\n\n\u65f6\u95f4\u70b9\u4e8b\u4ef6\u6392\u67e5\u64cd\u4f5c<\/tr>\n\n\n\n\n\n\n\n
\u4e0a\u7ebf\u5f53\u5929<\/td>\n\u4f4e\u5cf0\u671f\u8fd0\u884c\u6b63\u5e38，\u54cd\u5e94\u7565\u6162\u4f46\u53ef\u63a5\u53d7<\/td>\n\u8ba4\u4e3a\u662f\u9002\u914d\u671f\u6b63\u5e38\u73b0\u8c61，\u672a\u6df1\u7a76<\/td>\n<\/tr>\n
\u6b21\u65e5\u65e9\u9ad8\u5cf0<\/td>\n\u4e1a\u52a1\u7533\u62a5\u91cf\u4e0a\u6da8，TPS \u4ece\u9884\u671f 2000 \u6389\u5230 700，\u63a5\u53e3\u5e73\u5747\u5ef6\u8fdf\u4ece 30ms \u6da8\u5230 300ms<\/td>\n\u6392\u67e5 SQL\u3001\u7d22\u5f15，\u672a\u89c1\u660e\u663e\u6162 SQL<\/td>\n<\/tr>\n
\u9ad8\u5cf0\u6301\u7eed\u671f<\/td>\n\u5199\u5165\u63a5\u53e3\u5927\u9762\u79ef\u8d85\u65f6，99 \u5206\u4f4d\u5ef6\u8fdf\u8d85 1 \u79d2<\/td>\n\u8c03\u5927\u6570\u636e\u5e93\u7f13\u51b2\u533a\u3001\u4f18\u5316\u68c0\u67e5\u70b9，\u6536\u6548\u751a\u5fae<\/td>\n<\/tr>\n
\u7b2c\u4e8c\u5929<\/td>\n\u56e2\u961f\u6b7b\u78d5\u6570\u636e\u5e93\u53c2\u6570\u3001\u52a0\u7d22\u5f15\u3001\u4f18\u5316 SQL，\u6027\u80fd\u65e0\u672c\u8d28\u63d0\u5347<\/td>\n\u6000\u7591\u56fd\u4ea7\u6570\u636e\u5e93\u6027\u80fd\u4e0d\u884c，\u51c6\u5907\u56de\u9000 x86<\/td>\n<\/tr>\n
\u7b2c\u4e09\u5929<\/td>\n\u8f6c\u5411\u5e95\u5c42\u6392\u67e5，iostat \u53d1\u73b0 IO await \u9ad8\u8fbe 8ms，% util \u5e38\u5e74\u6253\u6ee1<\/td>\n\u5b9a\u4f4d\u6838\u5fc3\u74f6\u9888\u5728\u5b58\u50a8 IO \u6808，\u6570\u636e\u5e93\u80cc\u4e86\u9505<\/td>\n<\/tr>\n
\u4f18\u5316\u7a97\u53e3\u671f<\/td>\n\u9010\u5c42\u4f18\u5316 IO \u8c03\u5ea6\u3001\u5b58\u50a8\u7f13\u5b58\u3001\u6587\u4ef6\u7cfb\u7edf\u3001\u6570\u636e\u5e93\u53c2\u6570<\/td>\n\u4f18\u5316\u5b8c\u6210\u540e\u6027\u80fd\u53cd\u8d85 x86 \u539f\u73af\u5883<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

1.2 \u6838\u5fc3\u6545\u969c\u73b0\u8c61<\/h4>\n
  • \u5199\u5165\u5ef6\u8fdf\u98d9\u5347：\u8bfb\u64cd\u4f5c\u57fa\u672c\u6b63\u5e38，\u5199\u5165\u5ef6\u8fdf\u7ffb 10 \u500d，TPS \u4e0a\u4e0d\u53bb<\/li>\n
  • CPU \u4e0d\u9ad8 IO \u6ee1：\u6570\u636e\u5e93 CPU \u4f7f\u7528\u7387\u4e0d\u5230 30%，\u4f46\u78c1\u76d8 % util \u957f\u671f 100%，IO \u7b49\u5f85\u5360\u6bd4\u6781\u9ad8<\/li>\n
  • \u53c2\u6570\u4f18\u5316\u65e0\u6548：\u8c03\u5927\u5185\u5b58\u3001\u6539\u68c0\u67e5\u70b9\u3001\u4f18\u5316 SQL，\u90fd\u53ea\u80fd\u8f7b\u5fae\u6539\u5584，\u89e3\u51b3\u4e0d\u4e86\u6839\u672c\u95ee\u9898<\/li>\n
  • \u4f4e\u5cf0\u6b63\u5e38\u9ad8\u5cf0\u5d29：\u5e76\u53d1\u4f4e\u7684\u65f6\u5019\u4e00\u5207\u6b63\u5e38，\u4e00\u4e0a\u91cf\u5c31\u96ea\u5d29，\u5178\u578b\u7684 IO \u541e\u5410\u91cf\u74f6\u9888<\/li>\n

    1.3 \u6700\u5927\u7684\u8bef\u533a<\/h4>\n

    \u5f88\u591a\u56e2\u961f\u8fc1\u4fe1\u521b，\u9047\u5230\u6027\u80fd\u95ee\u9898\u7b2c\u4e00\u53cd\u5e94\u662f\u300c\u56fd\u4ea7\u6570\u636e\u5e93\u4e0d\u884c\u300d\u300cARM \u6027\u80fd\u5dee\u300d，\u5b9e\u9645\u4e0a 80% \u7684\u573a\u666f\u90fd\u662f\u5e95\u5c42 IO \u6808\u6ca1\u505a\u9002\u914d，\u8fd8\u5728\u7528\u673a\u68b0\u76d8\u7684\u9ed8\u8ba4\u914d\u7f6e\u8dd1\u5168\u95ea SSD，\u6570\u636e\u5e93\u548c CPU \u7eaf\u7eaf\u80cc\u9505\u3002<\/p>\n

    \n

    \u4e8c\u3001\u6392\u67e5\u5168\u6d41\u7a0b：\u4ece\u5e94\u7528\u5230\u5e95\u5c42，\u4e00\u6b65\u6b65\u5b9a\u4f4d IO \u74f6\u9888<\/h3>\n

    \u9047\u5230\u6027\u80fd\u95ee\u9898\u522b\u4e0a\u6765\u5c31\u6539\u6570\u636e\u5e93，\u6309\u4ece\u4e0a\u5230\u4e0b\u7684\u987a\u5e8f\u6392\u67e5，10 \u5206\u949f\u5c31\u80fd\u5b9a\u4f4d\u662f\u4e0d\u662f IO \u7684\u9505\u3002<\/p>\n

    \u7b2c\u4e00\u6b65：\u5148\u6392\u9664\u5e94\u7528\u4e0e\u6570\u636e\u5e93\u5c42\u9762<\/h4>\n
  • \u67e5\u6162 SQL：\u770b\u662f\u4e0d\u662f\u7a81\u7136\u51fa\u73b0\u5927\u91cf\u6162 SQL \u5bfc\u81f4 IO \u5347\u9ad8，\u786e\u8ba4 SQL \u6267\u884c\u8ba1\u5212\u6b63\u5e38\u3001\u7d22\u5f15\u6709\u6548<\/li>\n
  • \u67e5\u7b49\u5f85\u4e8b\u4ef6：\u6570\u636e\u5e93\u5c42\u9762\u770b\u662f\u4e0d\u662f IO \u7b49\u5f85\u5360\u4e3b\u5bfc\n

    — \u91d1\u4ed3：\u67e5\u770b\u7b49\u5f85\u4e8b\u4ef6，IO\u7c7b\u7b49\u5f85\u5360\u6bd4\u9ad8\u5c31\u662fIO\u74f6\u9888
    \nSELECT event, count(*) FROM sys_stat_activity WHERE wait_event_type = 'IO' GROUP BY event;<\/p>\n

    — \u8fbe\u68a6：\u67e5\u770b\u7cfb\u7edf\u7b49\u5f85\u4e8b\u4ef6
    \nSELECT class, wait_time FROM v$system_wait_class WHERE class LIKE '%IO%';<\/p>\n<\/li>\n

  • \u67e5\u7f13\u5b58\u547d\u4e2d\u7387：\u547d\u4e2d\u7387\u6b63\u5e38\u8bf4\u660e\u5185\u5b58\u591f，\u95ee\u9898\u4e0d\u5728\u7f13\u51b2\u533a\n

    — \u91d1\u4ed3\u7f13\u5b58\u547d\u4e2d\u7387
    \nSELECT sum(blks_hit)*100\/sum(blks_hit+blks_read) FROM sys_stat_database;<\/p>\n<\/li>\n

    \u7b2c\u4e8c\u6b65：\u7cfb\u7edf\u5c42\u786e\u8ba4 IO \u74f6\u9888<\/h4>\n

    \u7528 iostat -x 1 \u4e00\u773c\u5c31\u80fd\u786e\u8ba4，\u91cd\u70b9\u770b\u8fd9\u56db\u4e2a\u6307\u6807：<\/p>\n

    bash<\/p>\n

    iostat -x 1<\/p>\n\n\u6307\u6807\u6b63\u5e38 SSD \u503c\u6545\u969c\u503c\u8bf4\u660e<\/tr>\n\n\n\n\n\n
    %util<\/td>\n<30%<\/td>\n90%~100%<\/td>\n\u78c1\u76d8\u5229\u7528\u7387，\u957f\u671f\u6ee1\u5c31\u662f\u74f6\u9888<\/td>\n<\/tr>\n
    await<\/td>\n<0.5ms<\/td>\n5~20ms<\/td>\n\u5e73\u5747 IO \u7b49\u5f85\u65f6\u95f4，SSD \u8d85\u8fc7 1ms \u5c31\u5f02\u5e38<\/td>\n<\/tr>\n
    r_await\/w_await<\/td>\n<0.3ms<\/td>\n\u6570\u6beb\u79d2<\/td>\n\u8bfb\u5199\u5355\u72ec\u7b49\u5f85\u65f6\u95f4，\u5199\u5165\u9ad8\u91cd\u70b9\u770b\u5199\u7f13\u5b58<\/td>\n<\/tr>\n
    avgqu-sz<\/td>\n<5<\/td>\n\u51e0\u5341<\/td>\nIO \u961f\u5217\u6df1\u5ea6，\u6392\u961f\u4e25\u91cd\u8bf4\u660e\u5904\u7406\u4e0d\u8fc7\u6765<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    \u2705 \u786e\u8bca\u6807\u51c6：% util \u957f\u671f\u63a5\u8fd1 100%，await \u8fdc\u8d85 SSD \u6b63\u5e38\u6c34\u5e73，\u540c\u65f6\u6570\u636e\u5e93 IO \u7b49\u5f85\u5360\u6bd4\u6700\u9ad8，\u5c31\u662f\u7eaf IO \u74f6\u9888\u3002<\/p>\n

    \u7b2c\u4e09\u6b65：\u5b9a\u4f4d IO \u74f6\u9888\u5728\u54ea\u4e00\u5c42<\/h4>\n

    IO \u662f\u6574\u6761\u94fe\u8def，\u4ece\u6570\u636e\u5e93\u2192\u6587\u4ef6\u7cfb\u7edf\u2192\u64cd\u4f5c\u7cfb\u7edf\u2192RAID \u5361\u2192\u786c\u76d8，\u9010\u5c42\u6392\u9664：<\/p>\n

  • \u5148\u6d4b\u88f8\u76d8\u6027\u80fd：\u7528 fio \u6d4b\u88f8\u76d8\u6700\u5927 IOPS\u3001\u5ef6\u8fdf，\u786e\u8ba4\u786c\u4ef6\u672c\u8eab\u6027\u80fd\u8fbe\u6807<\/li>\n
  • \u518d\u6d4b\u6587\u4ef6\u7cfb\u7edf：\u6d4b\u6302\u8f7d\u6587\u4ef6\u7cfb\u7edf\u540e\u7684\u6027\u80fd，\u770b\u635f\u8017\u6709\u591a\u5927<\/li>\n
  • \u6700\u540e\u770b\u6570\u636e\u5e93：\u5bf9\u6bd4\u6570\u636e\u5e93\u5b9e\u9645 IO \u548c\u786c\u4ef6\u4e0a\u9650，\u5dee\u592a\u591a\u5c31\u662f\u4e0a\u5c42\u53c2\u6570\u6709\u95ee\u9898<\/li>\n

    💡 \u672c\u6b21\u6545\u969c\u6392\u67e5\u7ed3\u679c：\u88f8\u76d8 fio \u6d4b\u968f\u673a\u5199 IOPS \u80fd\u5230 3 \u4e07，\u6570\u636e\u5e93\u5b9e\u9645\u8dd1\u8d77\u6765\u53ea\u6709 3000，\u5dee\u4e86 10 \u500d，\u660e\u663e\u662f\u8f6f\u4ef6\u6808\u914d\u7f6e\u62d6\u4e86\u540e\u817f\u3002<\/p>\n

    \n

    \u4e09\u3001\u6839\u56e0\u6df1\u6316：\u56fd\u4ea7\u5316\u670d\u52a1\u5668 5 \u4e2a\u7279\u6709 IO \u5751，x86 \u6839\u672c\u9047\u4e0d\u5230<\/h3>\n

    \u5751 1：IO \u8c03\u5ea6\u5668\u9ed8\u8ba4\u7528 CFQ，\u5b8c\u5168\u4e0d\u9002\u5408 SSD<\/h4>\n

    \u5f88\u591a\u56fd\u4ea7\u670d\u52a1\u5668\u7cfb\u7edf\u9ed8\u8ba4 IO \u8c03\u5ea6\u5668\u8fd8\u662fcfq（\u5b8c\u5168\u516c\u5e73\u961f\u5217），\u8fd9\u662f\u7ed9\u673a\u68b0\u786c\u76d8\u8bbe\u8ba1\u7684，SSD \u573a\u666f\u4e0b\u8c03\u5ea6\u5f00\u9500\u6781\u5927，IOPS \u76f4\u63a5\u780d\u534a\u3002<\/p>\n

      \n
    • x86 \u65b0\u7cfb\u7edf\u5f88\u591a\u9ed8\u8ba4\u5df2\u7ecf\u5207\u4e86，\u56fd\u4ea7\u5b9a\u5236\u5316\u7cfb\u7edf\u53cd\u800c\u4fdd\u7559\u4e86\u65e7\u9ed8\u8ba4<\/li>\n
    • ARM \u5e73\u53f0 IO \u8c03\u5ea6\u9002\u914d\u672c\u8eab\u5c31\u4e0d\u5982 x86 \u6210\u719f，\u9519\u914d\u540e\u6027\u80fd\u635f\u8017\u66f4\u4e25\u91cd<\/li>\n<\/ul>\n

      \u5751 2：RAID \u5361\u9ed8\u8ba4\u5199\u901a\u6a21\u5f0f，\u6ca1\u5f00\u5199\u56de\u7f13\u5b58<\/h4>\n

      \u56fd\u4ea7 RAID \u5361\u9ed8\u8ba4\u7b56\u7565\u4fdd\u5b88，\u9ed8\u8ba4Write Through（\u5199\u901a），\u6bcf\u6b21\u5199\u90fd\u76f4\u63a5\u843d\u76d8，\u5b8c\u5168\u4e0d\u7528\u7f13\u5b58，\u5199\u5165\u5ef6\u8fdf\u76f4\u63a5\u7ffb\u51e0\u500d\u3002<\/p>\n

        \n
      • x86 \u670d\u52a1\u5668\u5f88\u591a\u51fa\u5382\u5c31\u5f00\u4e86\u5199\u56de，\u56fd\u4ea7\u670d\u52a1\u5668\u4e3a\u4e86\u6570\u636e\u5b89\u5168\u9ed8\u8ba4\u4fdd\u5b88\u914d\u7f6e<\/li>\n
      • \u6ca1\u6709\u5907\u7535\u7684\u60c5\u51b5\u4e0b\u5f00\u5199\u56de\u6709\u65ad\u7535\u4e22\u6570\u636e\u98ce\u9669，\u5f88\u591a\u8fd0\u7ef4\u4e0d\u6562\u5f00<\/li>\n<\/ul>\n

        \u5751 3：\u6587\u4ef6\u7cfb\u7edf\u9ed8\u8ba4\u6302\u8f7d\u53c2\u6570，\u65e5\u5fd7\u5f00\u9500\u5403\u6389\u4e00\u534a\u6027\u80fd<\/h4>\n

        \u9ed8\u8ba4 ext4\/xfs \u6302\u8f7d\u53c2\u6570\u90fd\u662f\u901a\u7528\u914d\u7f6e，\u5f00\u542f\u4e86 atime\u3001\u65e5\u5fd7\u5b8c\u6574\u6a21\u5f0f，\u6bcf\u4e00\u6b21 IO \u90fd\u9644\u5e26\u5143\u6570\u636e\u3001\u65e5\u5fd7\u5199\u5165，SSD \u573a\u666f\u4e0b\u7eaf\u7eaf\u6d6a\u8d39\u6027\u80fd\u3002<\/p>\n

          \n
        • \u6570\u636e\u5e93\u573a\u666f\u6709\u81ea\u5df1\u7684 WAL\/REDO \u65e5\u5fd7，\u6587\u4ef6\u7cfb\u7edf\u65e5\u5fd7\u5b8c\u5168\u53ef\u4ee5\u8c03\u5f31<\/li>\n
        • \u56fd\u4ea7\u5316\u6587\u4ef6\u7cfb\u7edf\u9a71\u52a8\u9002\u914d\u4e0d\u5982 x86 \u6210\u719f，\u989d\u5916\u5f00\u9500\u66f4\u5927<\/li>\n<\/ul>\n

          \u5751 4：\u961f\u5217\u6df1\u5ea6\u4e0d\u5339\u914d，\u9ad8\u5e76\u53d1\u4e0b IO \u62e5\u5835<\/h4>\n

          \u56fd\u4ea7 SSD \u56fa\u4ef6\u3001\u9a71\u52a8\u5bf9\u961f\u5217\u6df1\u5ea6\u7684\u9002\u914d\u548c x86 \u5e73\u53f0\u6709\u5dee\u5f02，\u9ed8\u8ba4\u961f\u5217\u6df1\u5ea6\u8981\u4e48\u592a\u5c0f\u53d1\u6325\u4e0d\u51fa SSD \u6027\u80fd，\u8981\u4e48\u592a\u5927\u5bfc\u81f4\u62e5\u5835\u5ef6\u8fdf\u98d9\u5347\u3002<\/p>\n

            \n
          • \u5f88\u591a\u56e2\u961f\u7167\u642c x86 \u7684\u961f\u5217\u6df1\u5ea6\u53c2\u6570，\u7ed3\u679c\u8981\u4e48\u6027\u80fd\u4e0a\u4e0d\u53bb，\u8981\u4e48\u5ef6\u8fdf\u7206\u70b8<\/li>\n
          • ARM \u5e73\u53f0\u4e2d\u65ad\u5904\u7406\u548c x86 \u6709\u5dee\u5f02，IO \u4eb2\u548c\u6027\u6ca1\u914d\u597d\u4e5f\u4f1a\u5bfc\u81f4\u6027\u80fd\u635f\u8017<\/li>\n<\/ul>\n

            \u5751 5：\u6570\u636e\u5e93\u53c2\u6570\u7167\u642c x86，\u68c0\u67e5\u70b9\u5237\u76d8\u592a\u731b<\/h4>\n

            \u5f88\u591a\u56e2\u961f\u8fc1\u79fb\u6570\u636e\u5e93，\u53c2\u6570\u76f4\u63a5\u4ece\u8001\u73af\u5883\u6284\u8fc7\u6765，\u68c0\u67e5\u70b9\u95f4\u9694\u77ed\u3001\u5237\u76d8\u7b56\u7565\u6fc0\u8fdb，\u5728 IO \u672c\u6765\u5c31\u5f31\u7684\u56fd\u4ea7\u5316\u73af\u5883\u4e0b，\u76f4\u63a5\u628a IO \u6253\u6ee1，\u4e1a\u52a1\u5199\u5165\u5168\u6392\u961f\u3002<\/p>\n

              \n
            • \u91d1\u4ed3\u3001\u8fbe\u68a6\u5728 ARM \u5e73\u53f0\u7684 IO \u884c\u4e3a\u548c x86 \u6709\u7ec6\u5fae\u5dee\u5f02，\u5237\u76d8\u9891\u7387\u9700\u8981\u91cd\u65b0\u9002\u914d<\/li>\n
            • \u56fd\u4ea7\u5b58\u50a8\u5199\u653e\u5927\u6bd4\u4e00\u7ebf SSD \u9ad8，\u9891\u7e41\u5c0f IO \u5199\u5165\u6027\u80fd\u8870\u51cf\u66f4\u660e\u663e<\/li>\n<\/ul>\n
              \n

              \u56db\u3001\u7b2c\u4e00\u5c42：\u7cfb\u7edf\u5c42 IO \u6781\u81f4\u8c03\u4f18（\u547d\u4ee4\u76f4\u63a5\u6284）<\/h3>\n

              \u8fd9\u4e00\u6b65\u4f18\u5316\u6210\u672c\u4e3a\u96f6，\u6539\u5b8c\u6027\u80fd\u5c31\u80fd\u63d0\u5347 50% \u4ee5\u4e0a，\u662f\u6027\u4ef7\u6bd4\u6700\u9ad8\u7684\u4f18\u5316\u3002<\/p>\n

              4.1 IO \u8c03\u5ea6\u5668\u5207\u6362\u4e3a SSD \u4e13\u5c5e<\/h4>\n

              \u6240\u6709 SSD \u76d8\u5168\u90e8\u6539\u6210mq-deadline\u8c03\u5ea6\u5668，\u673a\u68b0\u76d8\u7528bfq，\u6570\u636e\u5e93\u573a\u666f\u6027\u80fd\u6700\u4f18\u3002<\/p>\n

              # \u4e34\u65f6\u751f\u6548（\u66ff\u6362sdX\u4e3a\u5b9e\u9645\u78c1\u76d8\u540d）
              \necho mq-deadline > \/sys\/block\/sdX\/queue\/scheduler<\/p>\n

              # \u6c38\u4e45\u751f\u6548（CentOS\/\u9e92\u9e9f\u7cfb\u7edf）
              \necho 'ACTION=="add|change", KERNEL=="sd[a-z]", ATTR{queue\/scheduler}="mq-deadline"' > \/etc\/udev\/rules.d\/60-scheduler.rules
              \nudevadm control –reload-rules && udevadm trigger<\/p>\n

              4.2 \u8c03\u6574\u961f\u5217\u6df1\u5ea6\u4e0e IO \u4eb2\u548c\u6027<\/h4>\n

              \u6839\u636e SSD \u89c4\u683c\u8c03\u6574\u961f\u5217\u6df1\u5ea6，\u5e73\u8861\u541e\u5410\u91cf\u4e0e\u5ef6\u8fdf：<\/p>\n

              # \u8c03\u6574\u961f\u5217\u6df1\u5ea6，\u5168\u95eaSSD\u5efa\u8bae256~512
              \necho 256 > \/sys\/block\/sdX\/queue\/nr_requests<\/p>\n

              # \u5f00\u542fIO\u5408\u5e76，\u51cf\u5c11\u5c0fIO\u6570\u91cf
              \necho 1 > \/sys\/block\/sdX\/queue\/merges<\/p>\n

              # \u4f18\u5316SSD\u9884\u8bfb，\u6570\u636e\u5e93\u968f\u673a\u8bfb\u573a\u666f\u4e0d\u9700\u8981\u592a\u5927\u9884\u8bfb
              \necho 8 > \/sys\/block\/sdX\/queue\/read_ahead_kb<\/p>\n

              4.3 \u6587\u4ef6\u7cfb\u7edf\u6302\u8f7d\u53c2\u6570\u4f18\u5316<\/h4>\n

              ext4\/xfs \u90fd\u9002\u7528，\u91cd\u70b9\u51cf\u5c11\u5143\u6570\u636e\u5199\u5165\u3001\u964d\u4f4e\u65e5\u5fd7\u5f00\u9500：<\/p>\n

              # \u6302\u8f7d\u53c2\u6570\u4f18\u5316，\u5199\u5165\/etc\/fstab
              \n\/dev\/sdX1 \/data ext4 defaults,noatime,nodiratime,data=writeback,barrier=0 0 0<\/p>\n

                \n
              • noatime,nodiratime：\u5173\u95ed\u8bbf\u95ee\u65f6\u95f4\u8bb0\u5f55，\u51cf\u5c11\u5143\u6570\u636e\u5199\u5165<\/li>\n
              • data=writeback：\u6570\u636e\u5199\u5165\u4e0d\u7b49\u5f85\u65e5\u5fd7\u843d\u76d8，\u6570\u636e\u5e93\u81ea\u6709 WAL \u4fdd\u8bc1\u4e00\u81f4\u6027<\/li>\n
              • barrier=0：\u5173\u95ed\u78c1\u76d8\u5c4f\u969c，\u4f9d\u8d56 RAID \u5361\u7f13\u5b58\u5907\u7535\u4fdd\u8bc1\u4e00\u81f4\u6027<\/li>\n<\/ul>\n

                \u26a0\ufe0f \u6ce8\u610f：\u5f00 writeback \u548c\u5173 barrier \u5fc5\u987b\u786e\u4fdd RAID \u5361\u6709\u5907\u7535\u4fdd\u62a4，\u5426\u5219\u5f02\u5e38\u65ad\u7535\u53ef\u80fd\u4e22\u6570\u636e\u3002<\/p>\n

                4.4 \u5185\u6838\u53c2\u6570\u6574\u4f53\u8c03\u4f18<\/h4>\n

                # \u5199\u5165\/etc\/sysctl.conf，\u6267\u884csysctl -p\u751f\u6548
                \n# \u9875\u9762\u5237\u76d8\u4f18\u5316，\u907f\u514d\u96c6\u4e2d\u5237\u76d8\u5bfc\u81f4IO\u5c16\u523a
                \nvm.dirty_ratio = 10
                \nvm.dirty_background_ratio = 5
                \nvm.dirty_expire_centisecs = 3000
                \nvm.dirty_writeback_centisecs = 100<\/p>\n

                # \u63d0\u5347\u7cfb\u7edf\u6700\u5927IO\u961f\u5217\u6570
                \nkernel.sem = 5010 641280 5010 1280
                \nfs.aio-max-nr = 1048576
                \nfs.file-max = 6815744<\/p>\n

                4.5 \u5173\u95ed\u900f\u660e\u5927\u9875<\/h4>\n

                \u6570\u636e\u5e93\u573a\u666f\u900f\u660e\u5927\u9875\u4f1a\u5bfc\u81f4 IO \u6296\u52a8\u3001\u5ef6\u8fdf\u5ffd\u9ad8\u5ffd\u4f4e，\u5fc5\u987b\u6c38\u4e45\u5173\u95ed：<\/p>\n

                # \u4e34\u65f6\u5173\u95ed
                \necho never > \/sys\/kernel\/mm\/transparent_hugepage\/enabled
                \necho never > \/sys\/kernel\/mm\/transparent_hugepage\/defrag<\/p>\n

                # \u6c38\u4e45\u5173\u95ed，\u5199\u5165rc.local\u6216grub<\/p>\n

                \n

                \u4e94\u3001\u7b2c\u4e8c\u5c42：\u5b58\u50a8\u786c\u4ef6\u5c42\u4f18\u5316，\u91ca\u653e SSD \u5168\u90e8\u6027\u80fd<\/h3>\n

                \u786c\u4ef6\u5c42\u4f18\u5316\u662f\u5929\u82b1\u677f，\u914d\u7f6e\u5bf9\u4e86\u6027\u80fd\u76f4\u63a5\u7ffb\u500d\u3002<\/p>\n

                5.1 RAID \u5361\u5f00\u542f\u5199\u56de\u7f13\u5b58<\/h4>\n

                \u8fd9\u662f\u5199\u5165\u6027\u80fd\u63d0\u5347\u6700\u5927\u7684\u4e00\u9879，\u524d\u63d0\u662f RAID \u5361\u6709 BBU \u5907\u7535\u6a21\u5757：<\/p>\n

                # \u4ee5LSI RAID\u5361\u4e3a\u4f8b，\u67e5\u770b\u5f53\u524d\u7f13\u5b58\u7b56\u7565
                \nstorcli64 \/c0 show all | grep WriteCache<\/p>\n

                # \u5f00\u542f\u5199\u56de\u6a21\u5f0f
                \nstorcli64 \/c0\/v0 set wrcache=wb
                \n# \u5f00\u542f\u9884\u8bfb
                \nstorcli64 \/c0\/v0 set rdcache=ra<\/p>\n

                \u2705 \u6548\u679c：\u5199\u5165\u5ef6\u8fdf\u53ef\u4ece\u6beb\u79d2\u7ea7\u964d\u5230\u767e\u5fae\u79d2\u7ea7，\u968f\u673a\u5199 IOPS \u63d0\u5347 2~3 \u500d\u3002<\/p>\n

                5.2 RAID \u6761\u5e26\u5927\u5c0f\u9002\u914d\u6570\u636e\u5e93<\/h4>\n

                \u6570\u636e\u5e93\u573a\u666f\u63a8\u8350\u6761\u5e26\u5927\u5c0f 256K~512K，\u5339\u914d\u6570\u636e\u5e93\u9875\u5927\u5c0f（\u91d1\u4ed3 8K\u3001\u8fbe\u68a6\u9875\u5927\u5c0f\u53ef\u914d\u7f6e），\u51cf\u5c11\u6761\u5e26\u7a7f\u8d8a：<\/p>\n

                # \u65b0\u5efaRAID\u65f6\u6307\u5b9a\u6761\u5e26\u5927\u5c0f
                \nstorcli64 \/c0 add vd type=raid5 drives=0:0-3 strip=256<\/p>\n

                5.3 SSD \u56fa\u4ef6\u5347\u7ea7\u4e0e\u78e8\u635f\u5747\u8861<\/h4>\n

                \u56fd\u4ea7 SSD \u65e9\u671f\u56fa\u4ef6\u666e\u904d\u5b58\u5728\u6027\u80fd bug\u3001\u5199\u653e\u5927\u9ad8\u7684\u95ee\u9898，\u5347\u7ea7\u5230\u6700\u65b0\u7a33\u5b9a\u7248\u56fa\u4ef6，\u5f00\u542f\u5168\u5c40\u78e8\u635f\u5747\u8861，\u957f\u671f\u8fd0\u884c\u6027\u80fd\u4e0d\u8870\u51cf\u3002<\/p>\n

                5.4 \u6570\u636e\u76d8\u4e0e\u65e5\u5fd7\u76d8\u7269\u7406\u5206\u79bb<\/h4>\n

                \u91cd\u505a\u65e5\u5fd7（WAL\/REDO）\u662f\u987a\u5e8f\u5199，\u6570\u636e\u6587\u4ef6\u662f\u968f\u673a\u5199，\u7269\u7406\u5206\u79bb\u5230\u4e0d\u540c RAID \u7ec4：<\/p>\n

                  \n
                • \u65e5\u5fd7\u76d8：\u9ad8 IOPS\u3001\u4f4e\u5ef6\u8fdf\u7684 SSD，\u4e13\u95e8\u625b\u987a\u5e8f\u5199\u5165<\/li>\n
                • \u6570\u636e\u76d8：\u5927\u5bb9\u91cf SSD，\u627f\u8f7d\u968f\u673a\u8bfb\u5199 \u907f\u514d\u65e5\u5fd7\u5237\u76d8\u548c\u6570\u636e\u8bfb\u5199\u4e89\u62a2 IO \u8d44\u6e90，\u8fd9\u662f\u6570\u636e\u5e93\u5b58\u50a8\u7684\u6807\u51c6\u6700\u4f73\u5b9e\u8df5\u3002<\/li>\n<\/ul>\n
                  \n

                  \u516d\u3001\u7b2c\u4e09\u5c42：\u6570\u636e\u5e93\u5c42 IO \u9002\u914d（\u91d1\u4ed3 \/ \u8fbe\u68a6\u53cc\u5e93\u4e13\u5c5e\u53c2\u6570）<\/h3>\n

                  \u5e95\u5c42 IO \u4f18\u5316\u5b8c，\u6570\u636e\u5e93\u53c2\u6570\u4e5f\u8981\u8ddf\u7740\u9002\u914d，\u628a\u786c\u4ef6\u6027\u80fd\u5145\u5206\u7528\u8d77\u6765\u3002<\/p>\n

                  6.1 \u4eba\u5927\u91d1\u4ed3 V9 IO \u4e13\u5c5e\u4f18\u5316<\/h4>\n

                  \u5199\u5165 kingbase.conf：<\/p>\n

                  # ========== \u5185\u5b58\u7f13\u51b2，\u51cf\u5c11\u7269\u7406IO ==========
                  \nshared_buffers = 8GB # \u603b\u5185\u5b58\u768425%，\u5c3d\u91cf\u7f13\u5b58\u70ed\u70b9\u6570\u636e
                  \neffective_cache_size = 24GB # \u9884\u4f30\u7cfb\u7edf\u7f13\u5b58，\u5f71\u54cd\u6267\u884c\u8ba1\u5212
                  \nwork_mem = 32MB # \u5355\u64cd\u4f5c\u5185\u5b58，\u51cf\u5c11\u78c1\u76d8\u6392\u5e8f
                  \nmaintenance_work_mem = 1GB # \u7ef4\u62a4\u64cd\u4f5c\u5185\u5b58<\/p>\n

                  # ========== WAL\/\u68c0\u67e5\u70b9 \u5e73\u6ed1IO ==========
                  \nwal_buffers = 64MB # WAL\u7f13\u51b2\u533a
                  \nmax_wal_size = 16GB # WAL\u4e0a\u9650，\u5ef6\u957f\u68c0\u67e5\u70b9\u95f4\u9694
                  \ncheckpoint_timeout = 60min # \u68c0\u67e5\u70b9\u95f4\u9694，\u51cf\u5c11\u9891\u7e41\u5237\u76d8
                  \ncheckpoint_completion_target = 0.9 # \u5e73\u6ed1\u5237\u76d8，\u907f\u514dIO\u5c16\u523a
                  \nwal_writer_delay = 10ms # WAL\u5199\u5165\u9891\u7387
                  \ncommit_delay = 10 # \u63d0\u4ea4\u5ef6\u8fdf，\u5408\u5e76\u5c0f\u4e8b\u52a1\u5199\u5165<\/p>\n

                  # ========== \u540e\u53f0\u5237\u76d8\u4f18\u5316 ==========
                  \nbgwriter_delay = 10ms # \u540e\u53f0\u5199\u8fdb\u7a0b\u95f4\u9694
                  \nbgwriter_lru_maxpages = 200 # \u5355\u6b21\u5237\u810f\u9875\u6570
                  \neffective_io_concurrency = 200 # \u5e76\u53d1IO\u6570，\u9002\u914dSSD\u6027\u80fd
                  \nrandom_page_cost = 1.1 # SSD\u968f\u673a\u8bfb\u6210\u672c\u63a5\u8fd1\u987a\u5e8f\u8bfb，\u4f18\u5316\u6267\u884c\u8ba1\u5212
                  \nseq_page_cost = 1.0<\/p>\n

                  6.2 \u8fbe\u68a6 DM9 IO \u4e13\u5c5e\u4f18\u5316<\/h4>\n

                  \u5199\u5165 dm.ini：<\/p>\n

                  # ========== \u7f13\u51b2\u533a\u4f18\u5316 ==========
                  \nBUFFER = 8192 # \u6570\u636e\u7f13\u51b2\u533a，\u5355\u4f4dMB
                  \nMAX_BUFFER = 12288 # \u6700\u5927\u7f13\u51b2\u533a
                  \nLOG_BUFFER = 512 # \u65e5\u5fd7\u7f13\u51b2\u533a<\/p>\n

                  # ========== \u68c0\u67e5\u70b9\u4e0e\u5237\u76d8 ==========
                  \nCHECKPOINT_INTERVAL = 3600 # \u68c0\u67e5\u70b9\u95f4\u9694，\u5355\u4f4d\u79d2
                  \nCHECKPOINT_COMPLETED_TARGET = 0.9 # \u5e73\u6ed1\u5b8c\u6210\u6bd4\u4f8b
                  \nLOG_FILE_SIZE = 1024 # \u5355\u4e2a\u65e5\u5fd7\u6587\u4ef6\u5927\u5c0f，\u5355\u4f4dMB
                  \nLOG_SPACE_LIMIT = 81920 # \u65e5\u5fd7\u603b\u7a7a\u95f4<\/p>\n

                  # ========== IO\u9002\u914d ==========
                  \nIO_THREADS = 8 # IO\u7ebf\u7a0b\u6570
                  \nDIRECT_IO = 1 # \u5f00\u542fDIRECT IO，\u7ed5\u8fc7\u7cfb\u7edf\u7f13\u5b58\u53cc\u7f13\u5b58
                  \nPAGE_SIZE = 8192 # \u9875\u5927\u5c0f\u5339\u914d\u5b58\u50a8\u6761\u5e26
                  \nFAST_ROLLBACK = 1 # \u5feb\u901f\u56de\u6eda，\u51cf\u5c11IO\u5cf0\u503c<\/p>\n

                  6.3 \u6570\u636e\u5e93\u5c42\u4f18\u5316\u6838\u5fc3\u539f\u5219<\/h4>\n
                • \u80fd\u8d70\u5185\u5b58\u4e0d\u8d70\u78c1\u76d8：\u7f13\u51b2\u533a\u5c3d\u91cf\u7ed9\u8db3，\u70ed\u70b9\u6570\u636e\u5168\u653e\u5185\u5b58，\u4ece\u6839\u6e90\u51cf\u5c11\u7269\u7406 IO<\/li>\n
                • \u5237\u76d8\u8981\u5e73\u6ed1\u4e0d\u8981\u5c16\u523a：\u5ef6\u957f\u68c0\u67e5\u70b9\u95f4\u9694\u3001\u8c03\u5927\u5b8c\u6210\u76ee\u6807，\u628a\u96c6\u4e2d IO \u644a\u5e73，\u907f\u514d\u77ac\u95f4\u6253\u6ee1<\/li>\n
                • \u5c0f IO \u5408\u5e76\u5199\u5165：\u901a\u8fc7\u63d0\u4ea4\u5ef6\u8fdf\u3001\u7f13\u51b2\u533a\u5408\u5e76，\u628a\u96f6\u6563\u5c0f IO \u5408\u5e76\u6210\u5927 IO，\u63d0\u5347 SSD \u6548\u7387<\/li>\n
                  \n

                  \u4e03\u3001\u7b2c\u56db\u5c42：\u67b6\u6784\u5c42 IO \u524a\u5cf0，\u4ece\u6839\u6e90\u964d\u4f4e IO \u538b\u529b<\/h3>\n

                  \u786c\u4ef6\u4f18\u5316\u6709\u5929\u82b1\u677f，\u67b6\u6784\u5c42\u9762\u4f18\u5316\u624d\u80fd\u4ece\u6839\u672c\u964d\u4f4e IO \u9700\u6c42\u3002<\/p>\n

                  7.1 \u8bfb\u5199\u5206\u79bb<\/h4>\n

                  \u5907\u5e93\u627f\u62c5\u6240\u6709\u67e5\u8be2\u3001\u62a5\u8868\u3001\u7edf\u8ba1\u7c7b\u8bf7\u6c42，\u4e3b\u5e93\u53ea\u8d1f\u8d23\u5199\u5165\u548c\u6838\u5fc3\u67e5\u8be2，\u4e3b\u5e93 IO \u538b\u529b\u76f4\u63a5\u964d\u4f4e 50% \u4ee5\u4e0a\u3002<\/p>\n

                    \n
                  • \u91d1\u4ed3 \/ \u8fbe\u68a6\u539f\u751f\u652f\u6301\u7269\u7406\u5907\u5e93\u53ea\u8bfb\u67e5\u8be2，\u6539\u8fde\u63a5\u4e32\u5c31\u80fd\u7528<\/li>\n
                  • \u62a5\u8868\u3001\u6279\u91cf\u67e5\u8be2\u5168\u90e8\u8d70\u5907\u5e93，\u4e0d\u5360\u7528\u4e3b\u5e93 IO \u8d44\u6e90<\/li>\n<\/ul>\n

                    7.2 \u51b7\u70ed\u6570\u636e\u5206\u79bb<\/h4>\n

                    \u5386\u53f2\u51b7\u6570\u636e\u5f52\u6863\u5230\u4f4e\u901f\u5b58\u50a8，\u70ed\u6570\u636e\u7559\u5728\u9ad8\u6027\u80fd SSD：<\/p>\n

                      \n
                    • \u6309\u65f6\u95f4\u5206\u533a，\u8d85\u8fc7 3 \u4e2a\u6708\u7684\u5386\u53f2\u6570\u636e\u8fc1\u79fb\u5230\u5f52\u6863\u5e93<\/li>\n
                    • \u51b7\u6570\u636e\u53ea\u67e5\u8be2\u4e0d\u66f4\u65b0，\u5bf9 IO \u6027\u80fd\u8981\u6c42\u4f4e<\/li>\n
                    • \u70ed\u6570\u636e\u91cf\u5c0f\u4e86，\u7f13\u5b58\u547d\u4e2d\u7387\u66f4\u9ad8，\u7269\u7406 IO \u66f4\u5c11<\/li>\n<\/ul>\n

                      7.3 \u6279\u91cf\u64cd\u4f5c\u524a\u5cf0<\/h4>\n
                        \n
                      • \u6279\u91cf\u66f4\u65b0\u3001\u6570\u636e\u5bfc\u5165\u5206\u6279\u63d0\u4ea4，\u6bcf\u6279\u4f11\u7720\u95f4\u9694，\u907f\u514d\u77ac\u95f4\u6253\u6ee1 IO<\/li>\n
                      • \u6279\u91cf\u4efb\u52a1\u7edf\u4e00\u5b89\u6392\u5728\u4e1a\u52a1\u4f4e\u5cf0\u671f\u6267\u884c，\u4e0d\u548c\u9ad8\u5cf0\u671f\u62a2 IO<\/li>\n
                      • \u5927\u8868\u5efa\u7d22\u5f15\u3001vacuum\u3001\u7edf\u8ba1\u4fe1\u606f\u6536\u96c6\u7b49 IO \u5bc6\u96c6\u64cd\u4f5c，\u5168\u90e8\u653e\u5728\u4f4e\u5cf0\u671f<\/li>\n<\/ul>\n
                        \n

                        \u516b\u3001\u5b9e\u6d4b\u5bf9\u6bd4：\u4f18\u5316\u524d\u540e\u6027\u80fd\u6570\u636e\u5bf9\u7167\u8868<\/h3>\n

                        📊 \u6d4b\u8bd5\u73af\u5883：\u9cb2\u9e4f 920 2 \u9897 \/ 64 \u6838\u3001256G \u5185\u5b58\u3001\u56fd\u4ea7\u5168\u95ea SSD RAID5\u3001\u4eba\u5927\u91d1\u4ed3 V9\u3001sysbench \u538b\u6d4b\u3001100 \u5e76\u53d1 OLTP \u6df7\u5408\u573a\u666f\u3002<\/p>\n\n\u6027\u80fd\u6307\u6807\u4f18\u5316\u524d（\u9ed8\u8ba4\u914d\u7f6e）\u4f18\u5316\u540e（\u5168\u94fe\u8def\u8c03\u4f18）\u63d0\u5347\u5e45\u5ea6\u539f x86 \u73af\u5883\u53c2\u8003<\/tr>\n\n\n\n\n\n\n\n\n
                        \u5cf0\u503c TPS<\/td>\n720<\/td>\n2680<\/td>\n272%<\/td>\n2050<\/td>\n<\/tr>\n
                        \u5e73\u5747\u54cd\u5e94\u5ef6\u8fdf<\/td>\n138ms<\/td>\n29ms<\/td>\n\u964d\u4f4e 79%<\/td>\n35ms<\/td>\n<\/tr>\n
                        99 \u5206\u4f4d\u5ef6\u8fdf<\/td>\n1260ms<\/td>\n118ms<\/td>\n\u964d\u4f4e 91%<\/td>\n150ms<\/td>\n<\/tr>\n
                        \u968f\u673a\u5199 IOPS<\/td>\n3200<\/td>\n28500<\/td>\n790%<\/td>\n21000<\/td>\n<\/tr>\n
                        \u5199\u5165\u5e73\u5747\u5ef6\u8fdf<\/td>\n8.2ms<\/td>\n0.28ms<\/td>\n\u964d\u4f4e 97%<\/td>\n0.4ms<\/td>\n<\/tr>\n
                        \u78c1\u76d8 % util \u5cf0\u503c<\/td>\n98%<\/td>\n32%<\/td>\n\u4e0b\u964d 67%<\/td>\n45%<\/td>\n<\/tr>\n
                        \u6570\u636e\u5e93\u7f13\u5b58\u547d\u4e2d\u7387<\/td>\n89%<\/td>\n98.6%<\/td>\n\u63d0\u5347 9.6%<\/td>\n97%<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

                        💡 \u7ed3\u8bba：\u5168\u94fe\u8def\u4f18\u5316\u540e，\u56fd\u4ea7\u670d\u52a1\u5668 + \u56fd\u4ea7\u5b58\u50a8\u7684\u6570\u636e\u5e93\u6027\u80fd，\u4e0d\u4ec5\u8ffd\u4e0a\u4e86\u539f x86 \u73af\u5883，\u8fd8\u53cd\u8d85\u4e86 30% \u5de6\u53f3，\u5b8c\u5168\u6ee1\u8db3\u751f\u4ea7\u8981\u6c42\u3002\u4e4b\u524d\u89c9\u5f97\u6027\u80fd\u5dee，\u672c\u8d28\u90fd\u662f\u9ed8\u8ba4\u914d\u7f6e\u6ca1\u9002\u914d，\u767d\u767d\u6d6a\u8d39\u4e86\u786c\u4ef6\u80fd\u529b\u3002<\/p>\n

                        \n

                        \u4e5d\u3001\u907f\u5751\u7ea2\u7ebf：10 \u4e2a\u56fd\u4ea7\u5316 IO \u6700\u5bb9\u6613\u8e29\u7684\u81f4\u547d\u9519\u8bef<\/h3>\n

                        \u26a0\ufe0f \u7ea2\u7ebf 1：\u9ed8\u8ba4 IO \u8c03\u5ea6\u5668\u4e0d\u6362，\u7528 CFQ \u8dd1 SSD<\/p>\n

                          \n
                        • \u540e\u679c：IOPS \u76f4\u63a5\u780d\u534a，\u5ef6\u8fdf\u98d9\u5347，\u767d\u767d\u6d6a\u8d39 SSD \u6027\u80fd<\/li>\n
                        • \u6574\u6539：SSD \u5168\u90e8\u5207 mq-deadline，\u8fd9\u662f\u7b2c\u4e00\u6b65\u5fc5\u987b\u505a\u7684<\/li>\n<\/ul>\n

                          \u26a0\ufe0f \u7ea2\u7ebf 2：RAID \u5361\u5199\u901a\u6a21\u5f0f\u786c\u625b，\u4e0d\u6562\u5f00\u5199\u56de<\/p>\n

                            \n
                          • \u540e\u679c：\u5199\u5165\u5ef6\u8fdf\u7ffb\u51e0\u500d，IOPS \u4e0a\u4e0d\u53bb，\u6027\u80fd\u76f4\u63a5\u8170\u65a9<\/li>\n
                          • \u6574\u6539：\u6709\u5907\u7535\u5c31\u5f00\u5199\u56de，\u8fd9\u662f\u5199\u5165\u6027\u80fd\u63d0\u5347\u6700\u5927\u7684\u4e00\u9879<\/li>\n<\/ul>\n

                            \u26a0\ufe0f \u7ea2\u7ebf 3：\u6587\u4ef6\u7cfb\u7edf\u9ed8\u8ba4\u53c2\u6570\u4e0d\u4f18\u5316<\/p>\n

                              \n
                            • \u540e\u679c：\u5143\u6570\u636e\u3001\u65e5\u5fd7\u989d\u5916 IO \u5403\u6389 30% \u4ee5\u4e0a\u6027\u80fd<\/li>\n
                            • \u6574\u6539：\u5173 atime\u3001\u4f18\u5316\u65e5\u5fd7\u6a21\u5f0f，\u6570\u636e\u5e93\u573a\u666f\u5b8c\u5168\u6ca1\u95ee\u9898<\/li>\n<\/ul>\n

                              \u26a0\ufe0f \u7ea2\u7ebf 4：\u6570\u636e\u65e5\u5fd7\u6df7\u5728\u4e00\u4e2a\u76d8\u91cc<\/p>\n

                                \n
                              • \u540e\u679c：\u65e5\u5fd7\u5237\u76d8\u548c\u6570\u636e\u8bfb\u5199\u62a2 IO，\u9ad8\u5cf0\u671f\u4e92\u76f8\u963b\u585e<\/li>\n
                              • \u6574\u6539：\u7269\u7406\u5206\u79bb\u65e5\u5fd7\u76d8\u548c\u6570\u636e\u76d8，\u987a\u5e8f\u5199\u548c\u968f\u673a\u5199\u5206\u5f00<\/li>\n<\/ul>\n

                                \u26a0\ufe0f \u7ea2\u7ebf 5：\u6570\u636e\u5e93\u53c2\u6570\u76f4\u63a5\u7167\u642c x86<\/p>\n

                                  \n
                                • \u540e\u679c：\u68c0\u67e5\u70b9\u9891\u7e41\u5237\u76d8，IO \u5c16\u523a\u4e25\u91cd，\u9002\u914d\u5ea6\u5dee<\/li>\n
                                • \u6574\u6539：\u6839\u636e\u56fd\u4ea7\u5b58\u50a8\u7279\u6027\u91cd\u65b0\u8c03\u6574\u7f13\u51b2\u3001\u68c0\u67e5\u70b9\u53c2\u6570<\/li>\n<\/ul>\n

                                  \u26a0\ufe0f \u7ea2\u7ebf 6：\u900f\u660e\u5927\u9875\u4e0d\u5173<\/p>\n

                                    \n
                                  • \u540e\u679c：IO \u5ef6\u8fdf\u5ffd\u9ad8\u5ffd\u4f4e，\u5468\u671f\u6027\u5361\u987f，\u6392\u67e5\u4e0d\u5230\u6839\u56e0<\/li>\n
                                  • \u6574\u6539：\u6570\u636e\u5e93\u573a\u666f\u5fc5\u987b\u6c38\u4e45\u5173\u95ed\u900f\u660e\u5927\u9875<\/li>\n<\/ul>\n

                                    \u26a0\ufe0f \u7ea2\u7ebf 7：\u4e0d\u5347\u7ea7 SSD \u56fa\u4ef6<\/p>\n

                                      \n
                                    • \u540e\u679c：\u56fd\u4ea7 SSD \u65e9\u671f\u56fa\u4ef6 bug \u591a，\u5199\u653e\u5927\u9ad8\u3001\u8d8a\u7528\u8d8a\u6162<\/li>\n
                                    • \u6574\u6539：\u4e0a\u7ebf\u524d\u5347\u7ea7\u5230\u6700\u65b0\u7a33\u5b9a\u7248\u56fa\u4ef6，\u907f\u514d\u8e29\u5df2\u77e5\u5751<\/li>\n<\/ul>\n

                                      \u26a0\ufe0f \u7ea2\u7ebf 8：\u961f\u5217\u6df1\u5ea6\u4e71\u8c03<\/p>\n

                                        \n
                                      • \u540e\u679c：\u8c03\u592a\u5c0f\u6027\u80fd\u4e0a\u4e0d\u53bb，\u8c03\u592a\u5927\u5ef6\u8fdf\u7206\u70b8<\/li>\n
                                      • \u6574\u6539：\u538b\u6d4b\u627e\u5230\u6700\u4f73\u503c，\u517c\u987e\u541e\u5410\u91cf\u548c\u5ef6\u8fdf<\/li>\n<\/ul>\n

                                        \u26a0\ufe0f \u7ea2\u7ebf 9：\u4e3a\u4e86\u5b89\u5168\u5168\u5173\u7f13\u5b58\u3001\u5f00\u6700\u5f3a\u6821\u9a8c<\/p>\n

                                          \n
                                        • \u540e\u679c：\u5b89\u5168\u6027\u62c9\u6ee1，\u6027\u80fd\u76f4\u63a5\u780d\u5230\u819d\u76d6，\u5b8c\u5168\u6ca1\u6cd5\u7528<\/li>\n
                                        • \u6574\u6539：\u5728\u6709\u786c\u4ef6\u5907\u7535\u3001\u5197\u4f59\u4fdd\u62a4\u7684\u524d\u63d0\u4e0b，\u5408\u7406\u5f00\u542f\u7f13\u5b58<\/li>\n<\/ul>\n

                                          \u26a0\ufe0f \u7ea2\u7ebf 10：\u53ea\u4f18\u5316\u6570\u636e\u5e93，\u4e0d\u770b\u5e95\u5c42<\/p>\n

                                            \n
                                          • \u540e\u679c：\u6570\u636e\u5e93\u53c2\u6570\u8c03\u6765\u8c03\u53bb\u6536\u6548\u751a\u5fae，\u6839\u56e0\u5728\u5e95\u4e0b\u4e00\u5c42<\/li>\n
                                          • \u6574\u6539：\u6027\u80fd\u95ee\u9898\u4ece\u4e0a\u5230\u4e0b\u6392\u67e5，\u5b9a\u4f4d\u5230\u74f6\u9888\u5c42\u518d\u4f18\u5316<\/li>\n<\/ul>\n
                                            \n

                                            \u5341\u3001\u76d1\u63a7\u9884\u8b66：IO \u74f6\u9888\u63d0\u524d\u53d1\u73b0，\u522b\u7b49\u96ea\u5d29\u518d\u6551\u706b<\/h3>\n

                                            \u628a IO \u6307\u6807\u7eb3\u5165\u6838\u5fc3\u76d1\u63a7，\u5f02\u5e38\u63d0\u524d\u544a\u8b66，\u6839\u672c\u4e0d\u4f1a\u53d1\u5c55\u6210\u6027\u80fd\u96ea\u5d29\u3002<\/p>\n

                                            10.1 \u5fc5\u52a0 IO \u76d1\u63a7\u9879<\/h4>\n\n\u76d1\u63a7\u6307\u6807\u544a\u8b66\u9608\u503c\u544a\u8b66\u7ea7\u522b<\/tr>\n\n\n\n\n\n\n\n
                                            \u78c1\u76d8 % util<\/td>\n>70% \u6301\u7eed 5 \u5206\u949f<\/td>\n\u4e00\u822c\u544a\u8b66<\/td>\n<\/tr>\n
                                            \u78c1\u76d8 % util<\/td>\n>90% \u6301\u7eed 2 \u5206\u949f<\/td>\n\u4e25\u91cd\u544a\u8b66<\/td>\n<\/tr>\n
                                            IO \u5e73\u5747 await<\/td>\n>1ms \u6301\u7eed 5 \u5206\u949f<\/td>\n\u4e25\u91cd\u544a\u8b66<\/td>\n<\/tr>\n
                                            \u5199\u5165\u5ef6\u8fdf<\/td>\n>0.5ms \u6301\u7eed 5 \u5206\u949f<\/td>\n\u4e00\u822c\u544a\u8b66<\/td>\n<\/tr>\n
                                            IO \u961f\u5217\u957f\u5ea6<\/td>\n>32 \u6301\u7eed 5 \u5206\u949f<\/td>\n\u4e00\u822c\u544a\u8b66<\/td>\n<\/tr>\n
                                            \u6570\u636e\u5e93 IO \u7b49\u5f85\u5360\u6bd4<\/td>\n>30%<\/td>\n\u4e25\u91cd\u544a\u8b66<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

                                            10.2 \u5b9a\u671f\u5de1\u68c0\u9879<\/h4>\n
                                          • \u6bcf\u6708\u7528 fio \u538b\u6d4b\u4e00\u6b21\u88f8\u76d8\u6027\u80fd，\u5bf9\u6bd4\u57fa\u7ebf，\u53d1\u73b0\u6027\u80fd\u8870\u51cf\u53ca\u65f6\u5904\u7406<\/li>\n
                                          • \u6bcf\u5b63\u5ea6\u68c0\u67e5 SSD \u78e8\u635f\u5ea6\u3001\u5269\u4f59\u5bff\u547d，\u63d0\u524d\u66f4\u6362\u9884\u8b66\u76d8<\/li>\n
                                          • \u6bcf\u6708\u68c0\u67e5 RAID \u5361\u7f13\u5b58\u7b56\u7565\u3001\u56fa\u4ef6\u7248\u672c，\u4fdd\u6301\u914d\u7f6e\u4e00\u81f4<\/li>\n
                                            \n

                                            \u603b\u7ed3<\/h3>\n

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                                            \u653f\u52a1\u9009\u91d1\u4ed3，\u91d1\u878d\u9009\u8fbe\u68a6；MySQL \u8fc1\u79fb\u9009\u91d1\u4ed3，Oracle \u8fc1\u79fb\u9009\u8fbe\u68a6\u3002<\/p>\n

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