{"id":357,"date":"2023-03-23T10:22:15","date_gmt":"2023-03-23T02:22:15","guid":{"rendered":"https:\/\/feel.name\/?p=357"},"modified":"2023-03-23T10:22:15","modified_gmt":"2023-03-23T02:22:15","slug":"linux%e6%b8%85%e7%90%86%e7%bc%93%e5%ad%98%ef%bc%88cache%ef%bc%89","status":"publish","type":"post","link":"https:\/\/feel.name\/?p=357","title":{"rendered":"linux\u6e05\u7406\u7f13\u5b58\uff08cache\uff09"},"content":{"rendered":"\n<p>1\uff09\u6e05\u7406pagecache\uff08\u9875\u9762\u7f13\u5b58\uff09<\/p>\n\n\n\n<p># echo 1 &gt; \/proc\/sys\/vm\/drop_caches&nbsp;&nbsp;&nbsp;&nbsp; \u6216\u8005 # sysctl -w vm.drop_caches=1<\/p>\n\n\n\n<p>2\uff09\u6e05\u7406dentries\uff08\u76ee\u5f55\u7f13\u5b58\uff09\u548cinodes<\/p>\n\n\n\n<p># echo 2 &gt; \/proc\/sys\/vm\/drop_caches&nbsp;&nbsp;&nbsp;&nbsp; \u6216\u8005 # sysctl -w vm.drop_caches=2<\/p>\n\n\n\n<p>3\uff09\u6e05\u7406pagecache\u3001dentries\u548cinodes<\/p>\n\n\n\n<p># echo 3 &gt; \/proc\/sys\/vm\/drop_caches&nbsp;&nbsp;&nbsp;&nbsp; \u6216\u8005 # sysctl -w vm.drop_caches=3<\/p>\n\n\n\n<p>\u6ce8\uff1a\u4e0a\u9762\u4e09\u79cd\u65b9\u5f0f\u90fd\u662f\u4e34\u65f6\u91ca\u653e\u7f13\u5b58\u7684\u65b9\u6cd5\uff0c\u8981\u60f3\u6c38\u4e45\u91ca\u653e\u7f13\u5b58\uff0c\u9700\u8981\u5728\/etc\/sysctl.conf\u6587\u4ef6\u4e2d\u914d\u7f6e\uff1avm.drop_caches=1\/2\/3\uff0c\u7136\u540esysctl -p\u751f\u6548\u5373\u53ef\uff01<\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n\n\n\n<p>1. \u4f7f\u7528free\u67e5\u770b\u4e00\u4e0b\u5f53\u524d<a rel=\"noreferrer noopener\" href=\"https:\/\/so.csdn.net\/so\/search?q=%E5%86%85%E5%AD%98&amp;spm=1001.2101.3001.7020\" target=\"_blank\">\u5185\u5b58<\/a>\u4f7f\u7528\u60c5\u51b5<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>total  used   free shared  buff\/cache   available<\/code><\/pre>\n\n\n\n<p>Mem: 31 6 24 0 0 24<br>Swap: 15 2 12<\/p>\n\n\n\n<p>2. \u6267\u884csync\u540c\u6b65\u6570\u636e<\/p>\n\n\n\n<p>sync<\/p>\n\n\n\n<p>3. \u6e05\u7406cache<\/p>\n\n\n\n<p>echo 3 > \/proc\/sys\/vm\/drop_caches<\/p>\n","protected":false},"excerpt":{"rendered":"<p>1\uff09\u6e05\u7406pagecache\uff08\u9875\u9762\u7f13\u5b58\uff09 # echo 1 &gt; \/proc\/sys\/vm\/drop_cac&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[],"class_list":["post-357","post","type-post","status-publish","format-standard","hentry","category-linux"],"_links":{"self":[{"href":"https:\/\/feel.name\/index.php?rest_route=\/wp\/v2\/posts\/357","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/feel.name\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/feel.name\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/feel.name\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/feel.name\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=357"}],"version-history":[{"count":1,"href":"https:\/\/feel.name\/index.php?rest_route=\/wp\/v2\/posts\/357\/revisions"}],"predecessor-version":[{"id":358,"href":"https:\/\/feel.name\/index.php?rest_route=\/wp\/v2\/posts\/357\/revisions\/358"}],"wp:attachment":[{"href":"https:\/\/feel.name\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=357"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/feel.name\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=357"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/feel.name\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=357"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}