{"id":18173,"date":"2026-09-11T10:16:38","date_gmt":"2026-09-11T02:16:38","guid":{"rendered":"https:\/\/kbwp.transwarp.cn\/?p=18173"},"modified":"2026-09-11T10:16:49","modified_gmt":"2026-09-11T02:16:49","slug":"tddms-master-%e5%92%8c-tddms-tablet-%e6%9c%8d%e5%8a%a1%e7%9a%84%e5%86%85%e5%ad%98%e4%bf%a1%e6%81%af%e6%94%b6%e9%9b%86","status":"publish","type":"post","link":"https:\/\/kbwp.transwarp.cn\/?p=18173","title":{"rendered":"tddms master \u670d\u52a1\u7684\u5185\u5b58\u4fe1\u606f\u6536\u96c6"},"content":{"rendered":"<h3>\u6982\u8981\u63cf\u8ff0<\/h3>\n<p>tddms \u662f\u7531 C++ \u548c Raft \u67b6\u6784\u5b9e\u73b0\u7684\u9ad8\u6027\u80fd\u5206\u5e03\u5f0f\u6570\u636e\u5e93\u9879\u76ee\uff0c\u5982\u679c\u8981\u6536\u96c6\u8fd9\u7c7b\u4ea7\u54c1\u7684\u5806\u6808\u4fe1\u606f\uff0c\u9700\u8981\u638c\u63e1\u4e00\u4e9b C++ \u5185\u5b58\u6392\u67e5\u547d\u4ee4\u3002<\/p>\n<h3>\u8be6\u7ec6\u8bf4\u660e<\/h3>\n<ol>\n<li>top<\/li>\n<li>\u901a\u8fc7 smaps \u6587\u4ef6\u67e5\u770b\u8fdb\u7a0b\u7684\u5185\u5b58\u6bb5<\/li>\n<li>pmap<\/li>\n<li>gdb \u8c03\u8bd5\u6a21\u5f0f<\/li>\n<li>gcore \u6536\u96c6\u5806\u5185\u5b58\u5feb\u7167<\/li>\n<\/ol>\n<h5>1. \u786e\u8ba4\u5185\u5b58\u5360\u7528\u7684\u5b9e\u9645\u60c5\u51b5<\/h5>\n<p>\u9996\u5148\u6267\u884c TOP \uff0c\u786e\u8ba4\u662f RSS (\u5e38\u9a7b\u5185\u5b58) \u9ad8\uff0c\u8fd8\u662f VIRT (\u865a\u62df\u5185\u5b58) \u9ad8\u3002C++ \u7a0b\u5e8f\u4f7f\u7528 TCMalloc \u65f6\uff0cVIRT \u901a\u5e38\u4f1a\u975e\u5e38\u5927\uff08\u9884\u5206\u914d\uff09\uff0c\u8fd9\u901a\u5e38\u662f\u6b63\u5e38\u7684\uff1b\u6211\u4eec\u9700\u8981\u5173\u6ce8\u7684\u662f RSS\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/kbwp.transwarp.cn\/wp-content\/uploads\/2026\/03\/image-1773997332002.png\" alt=\"file\" \/><\/p>\n<h5>2. \u67e5\u770b\u8fdb\u7a0b\u7684\u5185\u5b58\u6bb5<\/h5>\n<p>\u67e5\u770b \/proc\/1\/smaps \u6587\u4ef6\u4e2d\u7684\u5185\u5b58\u6bb5\uff0c\u53ef\u4ee5\u4f7f\u7528 cat \u7ed3\u5408 awk \u7edf\u8ba1\u5360\u7528\u4e86\u6700\u591a RSS \u7684\u5185\u5b58\u6bb5\u3002<br \/>\n\u6216\u8005\u662f\u5c06\u8fd9\u4e2a smaps \u6587\u4ef6\u62ff\u51fa\u6765\uff0c\u6211\u4eec\u6765\u5206\u6790\u4e00\u4e0b\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/kbwp.transwarp.cn\/wp-content\/uploads\/2026\/03\/image-1773997866953.png\" alt=\"file\" \/><\/p>\n<h5>3. \u4f7f\u7528 pmap \u547d\u4ee4\u5206\u6790\u5185\u5b58\u5360\u7528<\/h5>\n<p>pmap \u662f\u76f4\u63a5\u89e3\u6790 smaps \u4e2d\u6587\u4ef6\u7684\u5185\u5bb9\uff0c\u751f\u6210\u683c\u5f0f\u5316\u7684\u6d88\u606f\u6216\u8005\u6458\u8981\u3001\u7edf\u8ba1\u4fe1\u606f\u7b49\u3002<\/p>\n<pre><code class=\"language-shell\"># -x: \u663e\u793a\u6269\u5c55\u4fe1\u606f\uff08\u5305\u62ec RSS\u3001\u810f\u9875\u7b49\uff09\uff0c\u8fd9\u662f\u5fc5\u987b\u7684\u3002\npmap -x 1\n\n# \u53ea\u770b\u7edf\u8ba1\u6458\u8981\uff08\u5feb\u901f\u5224\u65ad\uff09\npmap -q 1\n\n# -XX: \u663e\u793a\u6700\u8be6\u7ec6\u4fe1\u606f\uff0c\u5305\u62ec\u5185\u5b58\u6743\u9650\u3001\u504f\u79fb\u91cf\u3001\u5177\u4f53\u7684\u6620\u5c04\u8def\u5f84\uff08\u8fd9\u5bf9\u8bc6\u522b RocksDB \u7684 SST \u6587\u4ef6\u81f3\u5173\u91cd\u8981\uff09\u3002\npmap -XX 1 | less<\/code><\/pre>\n<p>\u6211\u4eec\u6839\u636e <code>pmap -XX 1 | less<\/code> \u7684\u7ed3\u679c\u4e3a\u4f8b\uff0c\u505a\u4e2a\u4ecb\u7ecd\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/kbwp.transwarp.cn\/wp-content\/uploads\/2026\/03\/image-1773999797463.png\" alt=\"file\" \/><\/p>\n<p>mapping \u5217\u4e3a\u5bf9\u8c61\u540d<br \/>\nsize \u5217\u662f\u7406\u8bba\u5360\u7528\u7684\u5185\u5b58\u5927\u5c0f<br \/>\nRss \u5217\u662f\u5360\u7528\u7684\u7269\u7406\u5185\u5b58\u5927\u5c0f<\/p>\n<p>\u8fd9\u91cc\u6709\u51e0\u79cd\u60c5\u51b5\uff1a<br \/>\n1\u3001\u5982\u679c mapping \u5217\u6709\u5f88\u591a\u7684 anon\uff0c\u53ef\u80fd\u662f block cache \u53ef\u80fd\u662f\u6b63\u5e38\u7684\u3002<br \/>\n2\u3001\u5982\u679c mapping \u5217\u51fa\u73b0\u4e86 sst \u6587\u4ef6\u8bf4\u660e\u52a0\u8f7d\u4e86\u5f88\u591a\u6587\u4ef6\u3002<br \/>\n3\u3001\u5982\u679c mapping \u5217\u51fa\u73b0\u4e86\u5f88\u591a stack \u8bf4\u660e\u5e76\u53d1\u5f88\u9ad8\u3002<\/p>\n<h5>4. gdb \u547d\u4ee4\u7684\u4f7f\u7528<\/h5>\n<p>\u53c2\u8003 gdb \u547d\u4ee4\u7684\u4f7f\u7528\u3002<br \/>\nGDB (GNU Debugger) \u662f\u4e00\u4e2a\u529f\u80fd\u5f3a\u5927\u7684\u6e90\u4ee3\u7801\u7ea7\u8c03\u8bd5\u5668\uff0c\u4e3b\u8981\u7528\u4e8e\u8c03\u8bd5\u7528 C\u3001C++\u3001Ada\u3001Objective-C\u3001Assembly \u7b49\u7f16\u8bd1\u578b\u8bed\u8a00\u7f16\u5199\u7684\u7a0b\u5e8f\u3002<\/p>\n<p>\u8fd9\u91cc\u4e3e\u4e2a\u4f8b\u5b50\uff1a<\/p>\n<pre><code class=\"language-shell\"># \u89e6\u53d1\u4e00\u6b21\u5f3a\u5236\u91ca\u653e\u5185\u5b58\nsudo gdb -q -batch -ex 'call malloc_trim(0)' -ex detach -ex quit -p <pid>\n<\/code><\/pre>\n<ul>\n<li>-q: Quiet\u6a21\u5f0f\u3002\u4e0d\u6253\u5370 GDB \u7684\u542f\u52a8\u7248\u6743\u4fe1\u606f\u548c\u6b22\u8fce\u8bed\uff0c\u8ba9\u8f93\u51fa\u66f4\u5e72\u51c0\u3002<\/li>\n<li>-batch: \u6279\u5904\u7406\u6a21\u5f0f\u3002GDB \u6267\u884c\u5b8c\u6240\u6709\u547d\u4ee4\u540e\u81ea\u52a8\u9000\u51fa\uff0c\u4e0d\u4f1a\u8fdb\u5165\u4ea4\u4e92\u754c\u9762\u3002<\/li>\n<li>-ex &#8216;command&#8217;: Execute\u3002\u6267\u884c\u7d27\u968f\u5176\u540e\u7684 GDB \u547d\u4ee4\u3002\u53ef\u4ee5\u591a\u6b21\u4f7f\u7528\u3002\n<ul>\n<li>-ex &#8216;call malloc_trim(0)&#8217;: \u6838\u5fc3\u52a8\u4f5c\u3002\u8c03\u7528 C \u6807\u51c6\u5e93\u51fd\u6570 malloc_trim\u3002<\/li>\n<li>-ex detach: \u6267\u884c\u5b8c\u540e\u4ece\u8fdb\u7a0b\u5206\u79bb\uff0c\u8ba9\u8fdb\u7a0b\u6062\u590d\u8fd0\u884c\u3002<\/li>\n<li>-ex quit: \u9000\u51fa GDB \u7a0b\u5e8f\u672c\u8eab\u3002<\/li>\n<\/ul>\n<\/li>\n<li>-p <pid>: \u6307\u5b9a\u8981\u9644\u52a0\u7684\u76ee\u6807\u8fdb\u7a0b ID\u3002<\/li>\n<\/ul>\n<pre><code class=\"language-shell\"># \u6293\u53d6\u5168\u91cf\u7ebf\u7a0b\u5806\u6808\uff08\u6392\u67e5\u6b7b\u9501\/CPU\u8d1f\u8f7d\uff09\ngdb -ex \"set pagination 0\" -ex \"thread apply all bt\" -batch -p 1 > \/tmp\/gdb2.txt\n<\/code><\/pre>\n<ul>\n<li>-ex &quot;set pagination 0&quot;: \u5173\u95ed\u5206\u9875\u3002\u9ed8\u8ba4 GDB \u8f93\u51fa\u957f\u65f6\u4f1a\u6682\u505c\uff08\u663e\u793a &#8211;More&#8211;\uff09\uff0c\u8fd9\u5728\u811a\u672c\u4e2d\u4f1a\u5361\u6b7b\u3002\u5173\u95ed\u540e\u4e00\u6b21\u6027\u8f93\u51fa\u6240\u6709\u5185\u5bb9\u3002<\/li>\n<li>-ex &quot;thread apply all bt&quot;: \u6838\u5fc3\u52a8\u4f5c\u3002\n<ul>\n<li>thread apply all: \u5bf9\u6240\u6709\u7ebf\u7a0b\u6267\u884c\u540e\u7eed\u547d\u4ee4\u3002<\/li>\n<li>bt: Backtrace\u3002\u6253\u5370\u5f53\u524d\u7ebf\u7a0b\u7684\u51fd\u6570\u8c03\u7528\u5806\u6808\u3002<\/li>\n<li>\u5408\u8d77\u6765\uff1a\u6253\u5370\u8fdb\u7a0b\u4e2d\u6bcf\u4e00\u4e2a\u7ebf\u7a0b\u6b64\u523b\u6b63\u5728\u6267\u884c\u7684\u4ee3\u7801\u8def\u5f84\u3002<\/li>\n<\/ul>\n<\/li>\n<li>-batch: \u6267\u884c\u5b8c\u81ea\u52a8\u9000\u51fa\u3002<\/li>\n<li>-p 1: \u9644\u52a0\u5230 PID \u4e3a 1 \u7684\u8fdb\u7a0b\uff08\u8bf7\u66ff\u6362\u4e3a\u5b9e\u9645 PID\uff09\u3002<\/li>\n<li>\/tmp\/gdb2.txt: \u5c06\u8f93\u51fa\u91cd\u5b9a\u5411\u4fdd\u5b58\u5230\u6587\u4ef6\uff0c\u65b9\u4fbf\u540e\u7eed\u5206\u6790\u3002<\/li>\n<\/ul>\n<p>\u529f\u80fd\u975e\u5e38\u7c7b\u4f3c\u4e8e \u963f\u91cc\u7684 Arthas (\u5f00\u6e90\u7684 Java \u8bca\u65ad\u5de5\u5177)<\/p>\n<p>\u5b83\u7684\u6838\u5fc3\u4f5c\u7528\u662f\u8ba9\u5f00\u53d1\u8005\u80fd\u591f\uff1a<\/p>\n<ul>\n<li>\u63a7\u5236\u7a0b\u5e8f\u6267\u884c\uff1a\u8bbe\u7f6e\u65ad\u70b9\uff08breakpoints\uff09\u3001\u5355\u6b65\u6267\u884c\uff08step\/next\uff09\u3001\u7ee7\u7eed\u8fd0\u884c\uff08continue\uff09\u3002<\/li>\n<li>\u68c0\u67e5\u72b6\u6001\uff1a\u67e5\u770b\u53d8\u91cf\u503c\u3001\u5bc4\u5b58\u5668\u5185\u5bb9\u3001\u5185\u5b58\u6570\u636e\u3001\u8c03\u7528\u6808\uff08backtrace\uff09\u3002<\/li>\n<li>\u5206\u6790\u5d29\u6e83\uff1a\u5f53\u7a0b\u5e8f\u6bb5\u9519\u8bef\uff08Segmentation Fault\uff09\u6216\u5d29\u6e83\u65f6\uff0c\u5206\u6790\u6838\u5fc3\u8f6c\u50a8\u6587\u4ef6\uff08core dump\uff09\u4ee5\u5b9a\u4f4d\u95ee\u9898\u6839\u6e90\u3002<\/li>\n<li>\u52a8\u6001\u4fee\u6539\uff1a\u5728\u8fd0\u884c\u65f6\u4fee\u6539\u53d8\u91cf\u503c\u6216\u751a\u81f3\u4fee\u6539\u6307\u4ee4\uff08\u9ad8\u7ea7\u7528\u6cd5\uff09\u3002<\/li>\n<\/ul>\n<p>\u5728 C\/C++ \u9886\u57df\uff0c\u5c24\u5176\u662f\u5728 Linux \u670d\u52a1\u5668\u73af\u5883\u4e0b\u6392\u67e5\u5d29\u6e83\uff08Core Dump\uff09\u3001\u6bb5\u9519\u8bef\u6216\u590d\u6742\u7684\u5185\u5b58\u95ee\u9898\u65f6\uff0cgdb \u4ecd\u7136\u662f\u4e0d\u53ef\u66ff\u4ee3\u7684\u9996\u9009\u5de5\u5177\uff0c\u5373\u4f7f\u662f\u4f7f\u7528 IDE\uff08\u5982 VS Code, CLion\uff09\uff0c\u5e95\u5c42\u5f80\u5f80\u4e5f\u662f\u8c03\u7528\u7684 GDB\u3002<\/p>\n<h5>5. \u6536\u96c6\u5806\u5185\u5b58\u5feb\u7167<\/h5>\n<p>\u539f\u7406\uff1a\u77ac\u95f4\u201c\u51bb\u4f4f\u201d\u8fdb\u7a0b\u5e76\u4fdd\u5b58\u5185\u5b58\u5feb\u7167\u5230\u78c1\u76d8\uff08Core \u6587\u4ef6\uff09\uff0c\u7136\u540e GDB \u53bb\u5206\u6790\u8fd9\u4e2a\u6587\u4ef6\uff0c\u539f\u8fdb\u7a0b\u53ef\u7acb\u5373\u6062\u590d\uff08\u6216\u91cd\u542f\uff09\u3002<\/p>\n<pre><code class=\"language-shell\"># \u5b9a\u4e49\u751f\u6210\u7684\u6587\u4ef6\u540d\u5b57\necho \"\/tmp\/core.%e.%p\" > \/proc\/sys\/kernel\/core_pattern\n\n# \u751f\u6210 Core \u6587\u4ef6\uff08\u4f7f\u7528 gcore \u5de5\u5177\uff0c\u6bd4 kill \u66f4\u6e29\u548c\uff09\nsudo gcore 1\n\n# \u8fd9\u4f1a\u751f\u6210 \/tmp\/core.master_main.1\uff0c\u8fdb\u7a0b\u53ea\u4f1a\u6682\u505c\u51e0\u79d2\u949f<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>\u6982\u8981\u63cf\u8ff0 tddms \u662f\u7531 C++ \u548c Raft \u67b6\u6784\u5b9e\u73b0\u7684\u9ad8\u6027\u80fd\u5206\u5e03\u5f0f\u6570\u636e\u5e93\u9879\u76ee\uff0c\u5982\u679c\u8981\u6536\u96c6\u8fd9\u7c7b\u4ea7\u54c1\u7684\u5806\u6808\u4fe1 ..<\/p>\n<div class=\"clear-fix\"><\/div>\n<p><a href=\"https:\/\/kbwp.transwarp.cn\/?p=18173\" title=\"read more...\">Read more<\/a><\/p>\n","protected":false},"author":11,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-18173","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"acf":[],"_links":{"self":[{"href":"https:\/\/kbwp.transwarp.cn\/index.php?rest_route=\/wp\/v2\/posts\/18173","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kbwp.transwarp.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kbwp.transwarp.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kbwp.transwarp.cn\/index.php?rest_route=\/wp\/v2\/users\/11"}],"replies":[{"embeddable":true,"href":"https:\/\/kbwp.transwarp.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=18173"}],"version-history":[{"count":4,"href":"https:\/\/kbwp.transwarp.cn\/index.php?rest_route=\/wp\/v2\/posts\/18173\/revisions"}],"predecessor-version":[{"id":19281,"href":"https:\/\/kbwp.transwarp.cn\/index.php?rest_route=\/wp\/v2\/posts\/18173\/revisions\/19281"}],"wp:attachment":[{"href":"https:\/\/kbwp.transwarp.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=18173"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kbwp.transwarp.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=18173"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kbwp.transwarp.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=18173"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}