{"id":62059,"date":"2025-04-29T10:43:26","date_gmt":"2025-04-29T02:43:26","guid":{"rendered":"https:\/\/fwq.ai\/blog\/62059\/"},"modified":"2025-04-29T10:43:26","modified_gmt":"2025-04-29T02:43:26","slug":"%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8linux%e8%bf%9b%e8%a1%8c%e5%86%85%e5%ad%98%e7%ae%a1%e7%90%86%e5%92%8c%e4%bc%98%e5%8c%96-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/62059\/","title":{"rendered":"\u5982\u4f55\u4f7f\u7528Linux\u8fdb\u884c\u5185\u5b58\u7ba1\u7406\u548c\u4f18\u5316"},"content":{"rendered":"<p>\u5982\u4f55\u4f7f\u7528linux\u8fdb\u884c\u5185\u5b58\u7ba1\u7406\u548c\u4f18\u5316<\/p>\n<p>\u3010\u5bfc\u8a00\u3011<br \/>\u5728Linux\u7cfb\u7edf\u4e2d\uff0c\u5185\u5b58\u7ba1\u7406\u548c\u4f18\u5316\u662f\u4e00\u4e2a\u975e\u5e38\u91cd\u8981\u7684\u4e3b\u9898\u3002\u5408\u7406\u5730\u7ba1\u7406\u5185\u5b58\u53ef\u4ee5\u63d0\u9ad8\u7cfb\u7edf\u7684\u6027\u80fd\u548c\u7a33\u5b9a\u6027\uff0c\u800c\u5185\u5b58\u4f18\u5316\u5219\u80fd\u591f\u6700\u5927\u7a0b\u5ea6\u5730\u5229\u7528\u7cfb\u7edf\u7684\u5185\u5b58\u8d44\u6e90\u3002\u672c\u6587\u5c06\u4ecb\u7ecd\u5982\u4f55\u4f7f\u7528linux\u8fdb\u884c\u5185\u5b58\u7ba1\u7406\u548c\u4f18\u5316\uff0c\u5e76\u63d0\u4f9b\u4e00\u4e9b\u5b9e\u7528\u7684\u4ee3\u7801\u793a\u4f8b\u3002<\/p>\n<p>\u3010\u4e00\u3001\u5185\u5b58\u7ba1\u7406\u3011<br \/>1.1 \u67e5\u770b\u5185\u5b58\u4fe1\u606f<br \/>\u5728Linux\u7cfb\u7edf\u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7\u547d\u4ee4&#8221;free&#8221;\u6765\u67e5\u770b\u7cfb\u7edf\u7684\u5185\u5b58\u4fe1\u606f\uff0c\u5305\u62ec\u603b\u5185\u5b58\u3001\u5df2\u7528\u5185\u5b58\u3001\u53ef\u7528\u5185\u5b58\u3001\u7f13\u5b58\u548c\u4ea4\u6362\u5206\u533a\u3002\u793a\u4f8b\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n<pre>$ free -h<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u8f93\u51fa\u7ed3\u679c\u7c7b\u4f3c\u4e8e\u4e0b\u9762\u7684\u5185\u5bb9\uff1a<\/p>\n<pre>              total        used        free      shared  buff\/cache   available\nMem:           7.7G        1.9G        706M        512M        5.1G        5.1G\nSwap:          2.0G        0B          2.0G<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>1.2 \u6e05\u7406\u7f13\u5b58<br \/>\u6709\u65f6\u5019\u7cfb\u7edf\u4f1a\u5c06\u4e00\u4e9b\u6570\u636e\u7f13\u5b58\u5230\u5185\u5b58\u4e2d\uff0c\u4ee5\u52a0\u5feb\u8bbf\u95ee\u901f\u5ea6\u3002\u4f46\u662f\u5982\u679c\u5185\u5b58\u7d27\u5f20\uff0c\u53ef\u4ee5\u901a\u8fc7\u91ca\u653e\u7f13\u5b58\u6765\u817e\u51fa\u5b9d\u8d35\u7684\u5185\u5b58\u7a7a\u95f4\u3002\u793a\u4f8b\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n<pre>$ sync; echo 1 &amp;gt; \/proc\/sys\/vm\/drop_caches<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>1.3 \u91ca\u653e\u4e0d\u5fc5\u8981\u7684\u5185\u5b58<br \/>\u6709\u65f6\u5019\u8fdb\u7a0b\u4f1a\u5360\u7528\u5927\u91cf\u7684\u5185\u5b58\uff0c\u4f46\u5b9e\u9645\u4e0a\u5b83\u5e76\u6ca1\u6709\u4f7f\u7528\u8fd9\u4e9b\u5185\u5b58\u3002\u8fd9\u65f6\uff0c\u53ef\u4ee5\u901a\u8fc7&#8221;malloc_trim&#8221;\u51fd\u6570\u6765\u91ca\u653e\u4e0d\u5fc5\u8981\u7684\u5185\u5b58\u3002\u793a\u4f8b\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n<pre>#include &lt;malloc.h&gt;\n\n...\n\nvoid trim_memory() {\n    malloc_trim(0);\n}&lt;\/malloc.h&gt;<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u3010\u4e8c\u3001\u5185\u5b58\u4f18\u5316\u3011<br \/>2.1 \u4f7f\u7528\u5927\u9875\u5185\u5b58<br \/>\u5728\u4e00\u4e9b\u9700\u8981\u5927\u5185\u5b58\u8fde\u7eed\u7a7a\u95f4\u7684\u5e94\u7528\u4e2d\uff0c\u4f7f\u7528\u5927\u9875\u5185\u5b58\u53ef\u4ee5\u63d0\u9ad8\u6027\u80fd\uff0c\u51cf\u5c11\u5185\u5b58\u788e\u7247\u3002\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u6b65\u9aa4\u542f\u7528\u5927\u9875\u5185\u5b58\u3002\u793a\u4f8b\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n<pre>$ echo \"vm.nr_hugepages=128\" &amp;gt;&amp;gt; \/etc\/sysctl.conf\n$ sysctl -p<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>2.2 \u900f\u660e\u5927\u9875<br \/>\u900f\u660e\u5927\u9875\u662f\u4e00\u9879\u5185\u6838\u7279\u6027\uff0c\u53ef\u4ee5\u81ea\u52a8\u5c06\u5c0f\u9875\u5185\u5b58\u8f6c\u6362\u4e3a\u5927\u9875\u5185\u5b58\uff0c\u4ee5\u51cf\u5c11\u5185\u5b58\u5f00\u9500\u3002\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u6b65\u9aa4\u542f\u7528\u900f\u660e\u5927\u9875\u3002\u793a\u4f8b\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n<pre>$ echo \"always\" &amp;gt; \/sys\/kernel\/mm\/transparent_hugepage\/enabled<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>2.3 \u5185\u5b58\u56de\u6536\u7b56\u7565<br \/>Linux\u7cfb\u7edf\u4e2d\u6709\u591a\u79cd\u5185\u5b58\u56de\u6536\u7b56\u7565\u53ef\u4f9b\u9009\u62e9\uff0c\u53ef\u4ee5\u6839\u636e\u5177\u4f53\u9700\u6c42\u8fdb\u884c\u8c03\u6574\u3002\u5e38\u89c1\u7684\u5185\u5b58\u56de\u6536\u7b56\u7565\u6709&#8221;Lru&#8221;\u3001&#8221;Generally FIFO&#8221;\u548c&#8221;Buddy&#8221;\u3002\u793a\u4f8b\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n<pre>$ echo \"lru\" &amp;gt; \/sys\/kernel\/mm\/allocstool\/lru\n$ echo \"generallyfifo\" &amp;gt; \/sys\/kernel\/mm\/allocstool\/lru\n$ echo \"buddy\" &amp;gt; \/sys\/kernel\/mm\/allocstool\/lru<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u3010\u603b\u7ed3\u3011<br \/>\u672c\u6587\u4ecb\u7ecd\u4e86\u5982\u4f55\u4f7f\u7528linux\u8fdb\u884c\u5185\u5b58\u7ba1\u7406\u548c\u4f18\u5316\uff0c\u5e76\u63d0\u4f9b\u4e86\u4e00\u4e9b\u5b9e\u7528\u7684\u4ee3\u7801\u793a\u4f8b\u3002\u5408\u7406\u5730\u7ba1\u7406\u5185\u5b58\u548c\u4f18\u5316\u5185\u5b58\u53ef\u4ee5\u63d0\u9ad8\u7cfb\u7edf\u7684\u6027\u80fd\u548c\u7a33\u5b9a\u6027\u3002\u5e0c\u671b\u672c\u6587\u5bf9\u60a8\u6709\u6240\u5e2e\u52a9\u3002<\/p>\n<p>\u4ee5\u4e0a\u5c31\u662f\u5982\u4f55\u4f7f\u7528Linux\u8fdb\u884c\u5185\u5b58\u7ba1\u7406\u548c\u4f18\u5316\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8FDCServers\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5982\u4f55\u4f7f\u7528linux\u8fdb\u884c\u5185\u5b58\u7ba1\u7406\u548c\u4f18\u5316 \u3010\u5bfc\u8a00\u3011\u5728Linux\u7cfb\u7edf\u4e2d\uff0c\u5185\u5b58\u7ba1\u7406\u548c\u4f18\u5316\u662f\u4e00\u4e2a\u975e\u5e38\u91cd\u8981\u7684\u4e3b\u9898\u3002\u5408\u7406\u5730\u7ba1\u7406\u5185\u5b58\u53ef\u4ee5\u63d0\u9ad8\u7cfb\u7edf\u7684\u6027\u80fd\u548c\u7a33\u5b9a\u6027\uff0c\u800c\u5185\u5b58\u4f18\u5316\u5219\u80fd\u591f\u6700\u5927\u7a0b\u5ea6\u5730\u5229\u7528\u7cfb\u7edf\u7684\u5185\u5b58\u8d44\u6e90\u3002\u672c\u6587\u5c06\u4ecb\u7ecd\u5982\u4f55\u4f7f\u7528linux\u8fdb\u884c\u5185\u5b58\u7ba1\u7406\u548c\u4f18\u5316\uff0c\u5e76\u63d0\u4f9b\u4e00\u4e9b\u5b9e\u7528\u7684\u4ee3\u7801\u793a\u4f8b\u3002 \u3010\u4e00\u3001\u5185\u5b58\u7ba1\u7406\u30111.1 \u67e5\u770b\u5185\u5b58\u4fe1\u606f\u5728Linux\u7cfb\u7edf\u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7\u547d\u4ee4&#8221;free&#8221;\u6765\u67e5\u770b\u7cfb\u7edf\u7684\u5185\u5b58\u4fe1\u606f\uff0c\u5305\u62ec\u603b\u5185\u5b58\u3001\u5df2\u7528\u5185\u5b58\u3001\u53ef\u7528\u5185\u5b58\u3001\u7f13\u5b58\u548c\u4ea4\u6362\u5206\u533a\u3002\u793a\u4f8b\u4ee3\u7801\u5982\u4e0b\uff1a $ free -h \u767b\u5f55\u540e\u590d\u5236 \u8f93\u51fa\u7ed3\u679c\u7c7b\u4f3c\u4e8e\u4e0b\u9762\u7684\u5185\u5bb9\uff1a total used free shared buff\/cache available Mem: 7.7G 1.9G 706M 512M 5.1G 5.1G Swap: 2.0G 0B 2.0G \u767b\u5f55\u540e\u590d\u5236 1.2 \u6e05\u7406\u7f13\u5b58\u6709\u65f6\u5019\u7cfb\u7edf\u4f1a\u5c06\u4e00\u4e9b\u6570\u636e\u7f13\u5b58\u5230\u5185\u5b58\u4e2d\uff0c\u4ee5\u52a0\u5feb\u8bbf\u95ee\u901f\u5ea6\u3002\u4f46\u662f\u5982\u679c\u5185\u5b58\u7d27\u5f20\uff0c\u53ef\u4ee5\u901a\u8fc7\u91ca\u653e\u7f13\u5b58\u6765\u817e\u51fa\u5b9d\u8d35\u7684\u5185\u5b58\u7a7a\u95f4\u3002\u793a\u4f8b\u4ee3\u7801\u5982\u4e0b\uff1a $ sync; echo 1 &amp;gt; \/proc\/sys\/vm\/drop_caches \u767b\u5f55\u540e\u590d\u5236 1.3 \u91ca\u653e\u4e0d\u5fc5\u8981\u7684\u5185\u5b58\u6709\u65f6\u5019\u8fdb\u7a0b\u4f1a\u5360\u7528\u5927\u91cf\u7684\u5185\u5b58\uff0c\u4f46\u5b9e\u9645\u4e0a\u5b83\u5e76\u6ca1\u6709\u4f7f\u7528\u8fd9\u4e9b\u5185\u5b58\u3002\u8fd9\u65f6\uff0c\u53ef\u4ee5\u901a\u8fc7&#8221;malloc_trim&#8221;\u51fd\u6570\u6765\u91ca\u653e\u4e0d\u5fc5\u8981\u7684\u5185\u5b58\u3002\u793a\u4f8b\u4ee3\u7801\u5982\u4e0b\uff1a #include &lt;malloc.h&gt; &#8230; void trim_memory() { malloc_trim(0); }&lt;\/malloc.h&gt; \u767b\u5f55\u540e\u590d\u5236 \u3010\u4e8c\u3001\u5185\u5b58\u4f18\u5316\u30112.1 \u4f7f\u7528\u5927\u9875\u5185\u5b58\u5728\u4e00\u4e9b\u9700\u8981\u5927\u5185\u5b58\u8fde\u7eed\u7a7a\u95f4\u7684\u5e94\u7528\u4e2d\uff0c\u4f7f\u7528\u5927\u9875\u5185\u5b58\u53ef\u4ee5\u63d0\u9ad8\u6027\u80fd\uff0c\u51cf\u5c11\u5185\u5b58\u788e\u7247\u3002\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u6b65\u9aa4\u542f\u7528\u5927\u9875\u5185\u5b58\u3002\u793a\u4f8b\u4ee3\u7801\u5982\u4e0b\uff1a $ echo &#8220;vm.nr_hugepages=128&#8221; &amp;gt;&amp;gt; \/etc\/sysctl.conf $ [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[],"class_list":["post-62059","post","type-post","status-publish","format-standard","hentry","category-os"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/62059","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=62059"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/62059\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=62059"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=62059"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=62059"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}