{"id":44848,"date":"2024-10-06T18:39:16","date_gmt":"2024-10-06T10:39:16","guid":{"rendered":"https:\/\/server.hk\/cnblog\/44848\/"},"modified":"2024-10-06T18:39:16","modified_gmt":"2024-10-06T10:39:16","slug":"linux-%e5%91%bd%e4%bb%a4%ef%bc%9atime-%e8%a8%88%e6%99%82%e4%b8%80%e5%80%8b%e7%b0%a1%e5%96%ae%e5%91%bd%e4%bb%a4%e6%88%96%e7%b5%a6%e5%87%ba%e8%b3%87%e6%ba%90%e4%bd%bf%e7%94%a8%e6%83%85%e6%b3%81","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/44848\/","title":{"rendered":"Linux \u547d\u4ee4\uff1atime &#8211; \u8a08\u6642\u4e00\u500b\u7c21\u55ae\u547d\u4ee4\u6216\u7d66\u51fa\u8cc7\u6e90\u4f7f\u7528\u60c5\u6cc1"},"content":{"rendered":"<h1 id=\"linux-%e5%91%bd%e4%bb%a4%ef%bc%9atime-%e8%a8%88%e6%99%82%e4%b8%80%e5%80%8b%e7%b0%a1%e5%96%ae%e5%91%bd%e4%bb%a4%e6%88%96%e7%b5%a6%e5%87%ba%e8%b3%87%e6%ba%90%e4%bd%bf%e7%94%a8%e6%83%85%e6%b3%81-eFlLmVByyC\">Linux \u547d\u4ee4\uff1atime &#8211; \u8a08\u6642\u4e00\u500b\u7c21\u55ae\u547d\u4ee4\u6216\u7d66\u51fa\u8cc7\u6e90\u4f7f\u7528\u60c5\u6cc1<\/h1>\n<p>\u5728Linux\u7cfb\u7d71\u4e2d\uff0c\u547d\u4ee4\u884c\u5de5\u5177\u662f\u7cfb\u7d71\u7ba1\u7406\u548c\u958b\u767c\u7684\u91cd\u8981\u7d44\u6210\u90e8\u5206\u3002\u5176\u4e2d\uff0c<code>time<\/code>\u547d\u4ee4\u662f\u4e00\u500b\u975e\u5e38\u5be6\u7528\u7684\u5de5\u5177\uff0c\u80fd\u5920\u5e6b\u52a9\u7528\u6236\u8a08\u7b97\u57f7\u884c\u67d0\u500b\u547d\u4ee4\u6240\u9700\u7684\u6642\u9593\u4ee5\u53ca\u8a72\u547d\u4ee4\u7684\u8cc7\u6e90\u4f7f\u7528\u60c5\u6cc1\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e<code>time<\/code>\u547d\u4ee4\u7684\u7528\u6cd5\u53ca\u5176\u5728\u65e5\u5e38\u5de5\u4f5c\u4e2d\u7684\u61c9\u7528\u3002<\/p>\n<h2>\u4ec0\u9ebc\u662f<code>time<\/code>\u547d\u4ee4\uff1f<\/h2>\n<p><code>time<\/code>\u547d\u4ee4\u7528\u65bc\u6e2c\u91cf\u57f7\u884c\u67d0\u500b\u547d\u4ee4\u6240\u9700\u7684\u6642\u9593\u3002\u5b83\u4e0d\u50c5\u63d0\u4f9b\u4e86\u57f7\u884c\u6642\u9593\u7684\u7e3d\u548c\uff0c\u9084\u80fd\u986f\u793a\u8a72\u547d\u4ee4\u5728\u57f7\u884c\u904e\u7a0b\u4e2d\u6240\u6d88\u8017\u7684CPU\u6642\u9593\u3001\u5167\u5b58\u4f7f\u7528\u60c5\u6cc1\u7b49\u8cc7\u6e90\u4fe1\u606f\u3002\u9019\u5c0d\u65bc\u6027\u80fd\u8abf\u512a\u548c\u8cc7\u6e90\u7ba1\u7406\u975e\u5e38\u6709\u5e6b\u52a9\u3002<\/p>\n<h2 id=\"%e5%9f%ba%e6%9c%ac%e7%94%a8%e6%b3%95-eFlLmVByyC\">\u57fa\u672c\u7528\u6cd5<\/h2>\n<p>\u4f7f\u7528<code>time<\/code>\u547d\u4ee4\u975e\u5e38\u7c21\u55ae\uff0c\u57fa\u672c\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>time [\u9078\u9805] \u547d\u4ee4 [\u53c3\u6578]<\/code><\/pre>\n<p>\u4f8b\u5982\uff0c\u82e5\u8981\u8a08\u7b97\u57f7\u884c<code>ls<\/code>\u547d\u4ee4\u6240\u9700\u7684\u6642\u9593\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\uff1a<\/p>\n<pre><code>time ls<\/code><\/pre>\n<p>\u57f7\u884c\u5f8c\uff0c\u7cfb\u7d71\u5c07\u986f\u793a<code>ls<\/code>\u547d\u4ee4\u7684\u8f38\u51fa\uff0c\u4e26\u5728\u547d\u4ee4\u57f7\u884c\u7d50\u675f\u5f8c\u986f\u793a\u6642\u9593\u7d71\u8a08\u4fe1\u606f\u3002<\/p>\n<h2 id=\"%e8%bc%b8%e5%87%ba%e8%a7%a3%e9%87%8b-eFlLmVByyC\">\u8f38\u51fa\u89e3\u91cb<\/h2>\n<p>\u7576\u4f60\u57f7\u884c<code>time<\/code>\u547d\u4ee4\u5f8c\uff0c\u6703\u770b\u5230\u985e\u4f3c\u4ee5\u4e0b\u7684\u8f38\u51fa\uff1a<\/p>\n<pre><code>real    0m0.002s\nuser    0m0.001s\nsys     0m0.001s<\/code><\/pre>\n<ul>\n<li><strong>real<\/strong>\uff1a\u8868\u793a\u5f9e\u958b\u59cb\u5230\u7d50\u675f\u7684\u5be6\u969b\u6642\u9593\uff08\u727d\u6d89\u5230\u7b49\u5f85\u6642\u9593\u7b49\uff09\u3002<\/li>\n<li><strong>user<\/strong>\uff1a\u8868\u793a\u5728\u7528\u6236\u6a21\u5f0f\u4e0b\u57f7\u884c\u7684CPU\u6642\u9593\u3002<\/li>\n<li><strong>sys<\/strong>\uff1a\u8868\u793a\u5728\u5167\u6838\u6a21\u5f0f\u4e0b\u57f7\u884c\u7684CPU\u6642\u9593\u3002<\/li>\n<\/ul>\n<p>\u9019\u4e9b\u4fe1\u606f\u80fd\u5e6b\u52a9\u7528\u6236\u4e86\u89e3\u547d\u4ee4\u7684\u6027\u80fd\uff0c\u4e26\u9032\u884c\u76f8\u61c9\u7684\u512a\u5316\u3002<\/p>\n<h2 id=\"%e9%81%b8%e9%a0%85%e4%bb%8b%e7%b4%b9-eFlLmVByyC\">\u9078\u9805\u4ecb\u7d39<\/h2>\n<p><code>time<\/code>\u547d\u4ee4\u9084\u652f\u6301\u591a\u7a2e\u9078\u9805\uff0c\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u7528\u7684\u9078\u9805\uff1a<\/p>\n<ul>\n<li><code>-p<\/code>\uff1a\u4ee5POSIX\u683c\u5f0f\u8f38\u51fa\u6642\u9593\u4fe1\u606f\u3002<\/li>\n<li><code>-o \u6587\u4ef6\u540d<\/code>\uff1a\u5c07\u8f38\u51fa\u7d50\u679c\u5beb\u5165\u6307\u5b9a\u7684\u6587\u4ef6\u3002<\/li>\n<li><code>-v<\/code>\uff1a\u986f\u793a\u66f4\u8a73\u7d30\u7684\u8cc7\u6e90\u4f7f\u7528\u60c5\u6cc1\uff0c\u5305\u62ec\u5167\u5b58\u4f7f\u7528\u3001\u4e0a\u4e0b\u6587\u5207\u63db\u7b49\u3002<\/li>\n<\/ul>\n<p>\u4f8b\u5982\uff0c\u82e5\u8981\u5c07\u8a73\u7d30\u7684\u8cc7\u6e90\u4f7f\u7528\u60c5\u6cc1\u8f38\u51fa\u5230\u6587\u4ef6\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\uff1a<\/p>\n<pre><code>time -v ls &gt; output.txt<\/code><\/pre>\n<h2 id=\"%e5%af%a6%e9%9a%9b%e6%87%89%e7%94%a8%e5%a0%b4%e6%99%af-eFlLmVByyC\">\u5be6\u969b\u61c9\u7528\u5834\u666f<\/h2>\n<p>\u5728\u65e5\u5e38\u5de5\u4f5c\u4e2d\uff0c<code>time<\/code>\u547d\u4ee4\u53ef\u4ee5\u7528\u65bc\u591a\u7a2e\u5834\u666f\uff0c\u4f8b\u5982\uff1a<\/p>\n<ul>\n<li>\u6027\u80fd\u6e2c\u8a66\uff1a\u6e2c\u8a66\u4e0d\u540c\u547d\u4ee4\u6216\u8173\u672c\u7684\u57f7\u884c\u6642\u9593\uff0c\u627e\u51fa\u6027\u80fd\u74f6\u9838\u3002<\/li>\n<li>\u8cc7\u6e90\u76e3\u63a7\uff1a\u76e3\u63a7\u7279\u5b9a\u547d\u4ee4\u7684\u8cc7\u6e90\u4f7f\u7528\u60c5\u6cc1\uff0c\u5e6b\u52a9\u7cfb\u7d71\u7ba1\u7406\u54e1\u9032\u884c\u8cc7\u6e90\u5206\u914d\u3002<\/li>\n<li>\u512a\u5316\u8173\u672c\uff1a\u5728\u958b\u767c\u904e\u7a0b\u4e2d\uff0c\u4f7f\u7528<code>time<\/code>\u547d\u4ee4\u4f86\u8a55\u4f30\u8173\u672c\u7684\u6548\u7387\uff0c\u9032\u884c\u512a\u5316\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-eFlLmVByyC\">\u7e3d\u7d50<\/h2>\n<p>\u7e3d\u7684\u4f86\u8aaa\uff0c<code>time<\/code>\u547d\u4ee4\u662f\u4e00\u500b\u5f37\u5927\u7684\u5de5\u5177\uff0c\u80fd\u5920\u5e6b\u52a9\u7528\u6236\u6709\u6548\u5730\u6e2c\u91cf\u547d\u4ee4\u7684\u57f7\u884c\u6642\u9593\u53ca\u8cc7\u6e90\u4f7f\u7528\u60c5\u6cc1\u3002\u7121\u8ad6\u662f\u5728\u6027\u80fd\u6e2c\u8a66\u9084\u662f\u8cc7\u6e90\u76e3\u63a7\u4e2d\uff0c<code>time<\/code>\u547d\u4ee4\u90fd\u80fd\u63d0\u4f9b\u6709\u50f9\u503c\u7684\u6578\u64da\uff0c\u5e6b\u52a9\u7528\u6236\u505a\u51fa\u66f4\u660e\u667a\u7684\u6c7a\u7b56\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u7ba1\u7406\u8cc7\u6e90\u7684\u7528\u6236\u4f86\u8aaa\uff0c\u638c\u63e1<code>time<\/code>\u547d\u4ee4\u7684\u4f7f\u7528\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002<\/p>\n<p>\u5982\u679c\u60a8\u5c0d\u65bc<code>time<\/code>\u547d\u4ee4\u6216\u5176\u4ed6Linux\u547d\u4ee4\u6709\u8208\u8da3\uff0c\u4e26\u5e0c\u671b\u5728<code>VPS<\/code>\u74b0\u5883\u4e2d\u9032\u884c\u66f4\u591a\u5be6\u9a57\uff0c\u6b61\u8fce\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4e86\u89e3\u66f4\u591a\u8cc7\u8a0a\uff0c\u63a2\u7d22\u6211\u5011\u7684<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u89e3\u6c7a\u65b9\u6848\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4f7f\u7528 Linux \u547d\u4ee4 `time` \u4f86\u8a08\u6642\u7c21\u55ae\u547d\u4ee4\u7684\u57f7\u884c\u6642\u9593\uff0c\u4e26\u7372\u53d6\u8cc7\u6e90\u4f7f\u7528\u60c5\u6cc1\uff0c\u5e6b\u52a9\u512a\u5316\u6027\u80fd\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4924],"tags":[],"class_list":["post-44848","post","type-post","status-publish","format-standard","hentry","category-setup-tutorials"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/44848","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=44848"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/44848\/revisions"}],"predecessor-version":[{"id":44849,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/44848\/revisions\/44849"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=44848"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=44848"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=44848"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}