{"id":23471,"date":"2025-04-19T07:56:50","date_gmt":"2025-04-18T23:56:50","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/23471.html"},"modified":"2025-04-19T07:56:50","modified_gmt":"2025-04-18T23:56:50","slug":"%e3%80%90linux%e3%80%91%e5%a6%82%e4%bd%95%e6%9f%a5%e7%9c%8b%e6%9c%8d%e5%8a%a1%e5%99%a8%e7%a3%81%e7%9b%98io%e6%80%a7%e8%83%bd","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/23471.html","title":{"rendered":"\u3010linux\u3011\u5982\u4f55\u67e5\u770b\u670d\u52a1\u5668\u78c1\u76d8IO\u6027\u80fd"},"content":{"rendered":"<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/04\/20250418235644-6802e6bc5c1f2.jpg\" alt=\"\u5916\u94fe\u56fe\u7247\u8f6c\u5b58\u5931\u8d25,\u6e90\u7ad9\u53ef\u80fd\u6709\u9632\u76d7\u94fe\u673a\u5236,\u5efa\u8bae\u5c06\u56fe\u7247\u4fdd\u5b58\u4e0b\u6765\u76f4\u63a5\u4e0a\u4f20\" \/><\/p>\n<h3>\u67e5\u770b\u670d\u52a1\u5668\u78c1\u76d8IO\u6027\u80fd<\/h3>\n<p>\u5728\u670d\u52a1\u5668\u8fd0\u7ef4\u8fc7\u7a0b\u4e2d&#xff0c;\u4e86\u89e3\u670d\u52a1\u5668\u7684\u78c1\u76d8IO\u6027\u80fd\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002\u78c1\u76d8IO\u6027\u80fd\u76f4\u63a5\u5f71\u54cd\u5230\u670d\u52a1\u5668\u7684\u54cd\u5e94\u901f\u5ea6\u548c\u5904\u7406\u80fd\u529b\u3002\u672c\u6587\u5c06\u4ecb\u7ecd\u5982\u4f55\u4f7f\u7528dd\u547d\u4ee4\u6765\u67e5\u770b\u670d\u52a1\u5668\u78c1\u76d8IO\u6027\u80fd\u3002<\/p>\n<h3>1. \u4ec0\u4e48\u662fdd\u547d\u4ee4&#xff1f;<\/h3>\n<p>dd\u547d\u4ee4\u662fLinux\u7cfb\u7edf\u4e2d\u7684\u4e00\u4e2a\u975e\u5e38\u5f3a\u5927\u7684\u5de5\u5177&#xff0c;\u5b83\u53ef\u4ee5\u7528\u4e8e\u590d\u5236\u6587\u4ef6\u3001\u8f6c\u6362\u6587\u4ef6\u683c\u5f0f\u3001\u5907\u4efd\u6570\u636e\u7b49\u3002dd\u547d\u4ee4\u7684\u57fa\u672c\u8bed\u6cd5\u5982\u4e0b&#xff1a;<\/p>\n<p>dd if&#061;\u8f93\u5165\u6587\u4ef6 of&#061;\u8f93\u51fa\u6587\u4ef6 bs&#061;\u5757\u5927\u5c0f count&#061;\u5757\u6570  <\/p>\n<p>\u5176\u4e2d&#xff0c;if\u8868\u793a\u8f93\u5165\u6587\u4ef6&#xff0c;of\u8868\u793a\u8f93\u51fa\u6587\u4ef6&#xff0c;bs\u8868\u793a\u5757\u5927\u5c0f&#xff0c;count\u8868\u793a\u5757\u6570\u3002<\/p>\n<h3>2. \u4e3a\u4ec0\u4e48\u8981\u4f7f\u7528dd\u547d\u4ee4\u67e5\u770b\u78c1\u76d8IO\u6027\u80fd&#xff1f;<\/h3>\n<p>dd\u547d\u4ee4\u53ef\u4ee5\u7528\u4e8e\u6d4b\u8bd5\u78c1\u76d8\u7684\u8bfb\u5199\u901f\u5ea6&#xff0c;\u901a\u8fc7\u89c2\u5bdfdd\u547d\u4ee4\u7684\u6267\u884c\u65f6\u95f4&#xff0c;\u6211\u4eec\u53ef\u4ee5\u4e86\u89e3\u5230\u78c1\u76d8\u7684IO\u6027\u80fd\u3002\u6b64\u5916&#xff0c;dd\u547d\u4ee4\u8fd8\u53ef\u4ee5\u7528\u4e8e\u6d4b\u8bd5\u78c1\u76d8\u7684\u7a33\u5b9a\u6027\u548c\u53ef\u9760\u6027\u3002<\/p>\n<h3>3. \u5982\u4f55\u4f7f\u7528dd\u547d\u4ee4\u67e5\u770b\u78c1\u76d8IO\u6027\u80fd&#xff1f;<\/h3>\n<p>\u8981\u4f7f\u7528dd\u547d\u4ee4\u67e5\u770b\u78c1\u76d8IO\u6027\u80fd&#xff0c;\u6211\u4eec\u9700\u8981\u6267\u884c\u4ee5\u4e0b\u6b65\u9aa4&#xff1a;<\/p>\n<h3>3.1 \u51c6\u5907\u6d4b\u8bd5\u6587\u4ef6<\/h3>\n<p>\u9996\u5148&#xff0c;\u6211\u4eec\u9700\u8981\u51c6\u5907\u4e00\u4e2a\u6d4b\u8bd5\u6587\u4ef6\u3002\u53ef\u4ee5\u4f7f\u7528dd\u547d\u4ee4\u521b\u5efa\u4e00\u4e2a\u6307\u5b9a\u5927\u5c0f\u7684\u7a7a\u6587\u4ef6&#xff0c;\u4f8b\u5982&#xff1a;<\/p>\n<p>dd if&#061;\/dev\/zero of&#061;b.txt bs&#061;1M count&#061;10240  <\/p>\n<p>\u8fd9\u6761\u547d\u4ee4\u4f1a\u521b\u5efa\u4e00\u4e2a\u540d\u4e3ab.txt\u7684\u6587\u4ef6&#xff0c;\u5927\u5c0f\u4e3a1GB&#xff08;10240MB&#xff09;&#xff0c;\u5185\u5bb9\u5168\u4e3a0\u3002ChatGPT\u4e2d\u6587\u7f51\u7ad9&#xff1a;https:\/\/aigc.cxyquan.com<\/p>\n<h3>3.2 \u6267\u884cdd\u547d\u4ee4<\/h3>\n<p>\u63a5\u4e0b\u6765&#xff0c;\u6211\u4eec\u9700\u8981\u6267\u884cdd\u547d\u4ee4\u6765\u6d4b\u8bd5\u78c1\u76d8\u7684IO\u6027\u80fd\u3002\u5728\u7ec8\u7aef\u4e2d\u8f93\u5165\u4ee5\u4e0b\u547d\u4ee4&#xff1a;<\/p>\n<p>dd if&#061;b.txt of&#061;\/dev\/null bs&#061;1M iflag&#061;direct oflag&#061;direct count&#061;10240  <\/p>\n<p>\u8fd9\u6761\u547d\u4ee4\u4f1a\u5c06b.txt\u6587\u4ef6\u7684\u5185\u5bb9\u76f4\u63a5\u5199\u5165\/dev\/null\u8bbe\u5907&#xff0c;\u4e0d\u8fdb\u884c\u4efb\u4f55\u5b9e\u9645\u7684\u78c1\u76d8\u64cd\u4f5c\u3002iflag\u548coflag\u53c2\u6570\u7528\u4e8e\u6307\u5b9a\u8f93\u5165\u548c\u8f93\u51fa\u6587\u4ef6\u7684\u8bbf\u95ee\u65b9\u5f0f&#xff0c;direct\u8868\u793a\u76f4\u63a5\u8bbf\u95ee\u78c1\u76d8&#xff0c;\u4e0d\u8fdb\u884c\u7f13\u5b58\u3002count\u53c2\u6570\u8868\u793a\u8981\u590d\u5236\u7684\u5757\u6570&#xff0c;\u5373\u6d4b\u8bd5\u7684\u6301\u7eed\u65f6\u95f4\u3002<\/p>\n<h3>3.3 \u67e5\u770b\u6d4b\u8bd5\u7ed3\u679c<\/h3>\n<p>\u5f53dd\u547d\u4ee4\u6267\u884c\u5b8c\u6210\u540e&#xff0c;\u6211\u4eec\u53ef\u4ee5\u67e5\u770b\u6d4b\u8bd5\u7ed3\u679c\u3002\u5728\u7ec8\u7aef\u4e2d\u8f93\u5165\u4ee5\u4e0b\u547d\u4ee4&#xff1a;<\/p>\n<p>cat \/proc\/diskstats | grep b.txt | awk &#039;{print $5}&#039; | tail -n 1  <\/p>\n<p>\u8fd9\u6761\u547d\u4ee4\u4f1a\u663e\u793ab.txt\u6587\u4ef6\u7684\u8bfb\u53d6\u901f\u5ea6\u3002\u5982\u679c\u9700\u8981\u663e\u793a\u5199\u5165\u901f\u5ea6&#xff0c;\u53ef\u4ee5\u5c06grep\u540e\u9762\u7684\u53c2\u6570\u6539\u4e3ab.txt\u3002<\/p>\n<h3>4. \u5982\u4f55\u89e3\u8bfb\u6d4b\u8bd5\u7ed3\u679c&#xff1f;<\/h3>\n<p>\u5728dd\u547d\u4ee4\u6267\u884c\u5b8c\u6210\u540e&#xff0c;\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u67e5\u770b\/proc\/diskstats\u6587\u4ef6\u6765\u83b7\u53d6\u78c1\u76d8\u7684IO\u6027\u80fd\u4fe1\u606f\u3002\/proc\/diskstats\u6587\u4ef6\u5305\u542b\u4e86\u78c1\u76d8\u7684\u7edf\u8ba1\u4fe1\u606f&#xff0c;\u5305\u62ec\u8bfb\u53d6\u6b21\u6570\u3001\u5199\u5165\u6b21\u6570\u3001\u8bfb\u53d6\u5b57\u8282\u6570\u3001\u5199\u5165\u5b57\u8282\u6570\u7b49\u3002\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7grep\u547d\u4ee4\u7b5b\u9009\u51fa\u4e0e\u6d4b\u8bd5\u6587\u4ef6\u76f8\u5173\u7684\u4fe1\u606f&#xff0c;\u7136\u540e\u4f7f\u7528awk\u547d\u4ee4\u63d0\u53d6\u51fa\u6240\u9700\u7684\u6570\u636e\u3002\u6700\u540e&#xff0c;\u4f7f\u7528tail\u547d\u4ee4\u663e\u793a\u6700\u540e\u4e00\u884c\u6570\u636e&#xff0c;\u5373\u6d4b\u8bd5\u7ed3\u679c\u3002<\/p>\n<p>\u6d4b\u8bd5\u7ed3\u679c\u4e2d\u7684\u6570\u503c\u8868\u793a\u6bcf\u79d2\u4f20\u8f93\u7684\u6570\u636e\u91cf&#xff0c;\u5355\u4f4d\u4e3aKBps&#xff08;\u5343\u5b57\u8282\u6bcf\u79d2&#xff09;\u3002\u4f8b\u5982&#xff0c;\u5982\u679c\u6d4b\u8bd5\u7ed3\u679c\u663e\u793a\u4e3a10240KBps&#xff0c;\u90a3\u4e48\u8868\u793a\u78c1\u76d8\u6bcf\u79d2\u53ef\u4ee5\u4f20\u8f9310240KB\u7684\u6570\u636e\u3002\u8fd9\u4e2a\u6570\u503c\u8d8a\u5927&#xff0c;\u8bf4\u660e\u78c1\u76d8\u7684IO\u6027\u80fd\u8d8a\u597d\u3002<\/p>\n<h3>5. \u6ce8\u610f\u4e8b\u9879<\/h3>\n<p>\u5728\u4f7f\u7528dd\u547d\u4ee4\u67e5\u770b\u78c1\u76d8IO\u6027\u80fd\u65f6&#xff0c;\u9700\u8981\u6ce8\u610f\u4ee5\u4e0b\u51e0\u70b9&#xff1a;<\/p>\n<ul>\n<li>\n<p>\u7531\u4e8edd\u547d\u4ee4\u4f1a\u5360\u7528\u5927\u91cf\u7684CPU\u8d44\u6e90\u548c\u5185\u5b58\u8d44\u6e90&#xff0c;\u56e0\u6b64\u5728\u6267\u884cdd\u547d\u4ee4\u65f6&#xff0c;\u5efa\u8bae\u5173\u95ed\u5176\u4ed6\u4e0d\u5fc5\u8981\u7684\u7a0b\u5e8f\u548c\u670d\u52a1\u3002<\/p>\n<\/li>\n<li>\n<p>\u4e3a\u4e86\u83b7\u5f97\u51c6\u786e\u7684\u6d4b\u8bd5\u7ed3\u679c&#xff0c;\u5efa\u8bae\u5728\u670d\u52a1\u5668\u8d1f\u8f7d\u8f83\u4f4e\u7684\u60c5\u51b5\u4e0b\u8fdb\u884c\u6d4b\u8bd5\u3002\u5982\u679c\u670d\u52a1\u5668\u8d1f\u8f7d\u8f83\u9ad8&#xff0c;\u6d4b\u8bd5\u7ed3\u679c\u53ef\u80fd\u4f1a\u53d7\u5230\u5176\u4ed6\u56e0\u7d20\u7684\u5f71\u54cd\u3002<\/p>\n<\/li>\n<li>\n<p>\u7531\u4e8edd\u547d\u4ee4\u4f1a\u521b\u5efa\u5927\u91cf\u7684\u4e34\u65f6\u6587\u4ef6&#xff0c;\u56e0\u6b64\u5efa\u8bae\u5728\u6d4b\u8bd5\u7ed3\u675f\u540e\u5220\u9664\u8fd9\u4e9b\u4e34\u65f6\u6587\u4ef6&#xff0c;\u4ee5\u91ca\u653e\u78c1\u76d8\u7a7a\u95f4\u3002\u53ef\u4ee5\u4f7f\u7528rm\u547d\u4ee4\u5220\u9664\u8fd9\u4e9b\u6587\u4ef6&#xff0c;\u4f8b\u5982&#xff1a;rm b.txt\u3002<\/p>\n<\/li>\n<li>\n<p>\u5982\u679c\u9700\u8981\u5b9a\u671f\u68c0\u67e5\u78c1\u76d8IO\u6027\u80fd&#xff0c;\u53ef\u4ee5\u5c06\u8fd9\u4e9bdd\u547d\u4ee4\u6dfb\u52a0\u5230cron\u5b9a\u65f6\u4efb\u52a1\u4e2d&#xff0c;\u4ee5\u4fbf\u81ea\u52a8\u6267\u884c\u3002\u4f8b\u5982&#xff0c;\u53ef\u4ee5\u521b\u5efa\u4e00\u4e2a\u540d\u4e3acheck_io.sh\u7684\u811a\u672c\u6587\u4ef6&#xff0c;\u5185\u5bb9\u5982\u4e0b&#xff1a;<\/p>\n<\/li>\n<\/ul>\n<p>#!\/bin\/bash<br \/>\necho &#034;\u5f00\u59cb\u68c0\u67e5\u78c1\u76d8IO\u6027\u80fd&#8230;&#034; &gt;&gt; io_test.log<br \/>\ndd if&#061;b.txt of&#061;\/dev\/null bs&#061;1M iflag&#061;direct oflag&#061;direct count&#061;10240 &gt;&gt; io_test.log<br \/>\necho &#034;\u68c0\u67e5\u5b8c\u6210&#034; &gt;&gt; io_test.log  <\/p>\n<p>\u7136\u540e\u5c06\u8fd9\u4e2a\u811a\u672c\u6dfb\u52a0\u5230cron\u5b9a\u65f6\u4efb\u52a1\u4e2d&#xff0c;\u4f8b\u5982&#xff1a;*\/5 * * * * \/path\/to\/check_io.sh&#xff0c;\u8868\u793a\u6bcf5\u5206\u949f\u6267\u884c\u4e00\u6b21\u68c0\u67e5\u3002\u8fd9\u6837&#xff0c;\u6211\u4eec\u5c31\u53ef\u4ee5\u5b9a\u671f\u67e5\u770b\u670d\u52a1\u5668\u7684\u78c1\u76d8IO\u6027\u80fd\u4e86\u3002<\/p>\n<h3>6. 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decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/04\/20250418235644-6802e6bcad6fe.jpg\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<p>\u653b\u51fb\u548c\u9632\u5b88\u8981\u5b66\u7684\u4e1c\u897f\u4e5f\u4e0d\u5c11&#xff0c;\u5177\u4f53\u8981\u5b66\u7684\u4e1c\u897f\u6211\u90fd\u5199\u5728\u4e86\u4e0a\u9762\u7684\u8def\u7ebf\u56fe&#xff0c;\u5982\u679c\u4f60\u80fd\u5b66\u5b8c\u5b83\u4eec&#xff0c;\u4f60\u53bb\u5c31\u4e1a\u548c\u63a5\u79c1\u6d3b\u5b8c\u5168\u6ca1\u6709\u95ee\u9898\u3002<\/p>\n<p>2.\u89c6\u9891\u6559\u7a0b 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