{"id":1385,"date":"2015-11-12T17:51:58","date_gmt":"2015-11-12T09:51:58","guid":{"rendered":"http:\/\/nick.txtcc.com\/?p=1385"},"modified":"2015-11-12T17:52:00","modified_gmt":"2015-11-12T09:52:00","slug":"numa%e6%9e%b6%e6%9e%84%e7%9a%84cpu-%e4%bd%a0%e7%9c%9f%e7%9a%84%e7%94%a8%e5%a5%bd%e4%ba%86%e4%b9%88%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/nick.txtcc.com\/index.php\/linux\/1385","title":{"rendered":"NUMA\u67b6\u6784\u7684CPU &#8212; \u4f60\u771f\u7684\u7528\u597d\u4e86\u4e48\uff1f"},"content":{"rendered":"<blockquote>\u672c\u6587\u4eceNUMA\u7684\u4ecb\u7ecd\u5f15\u51fa\u5e38\u89c1\u7684NUMA\u4f7f\u7528\u4e2d\u7684\u9677\u9631\uff0c\u7ee7\u800c\u8ba8\u8bba\u5bf9\u4e8eNUMA\u7cfb\u7edf\u7684\u4f18\u5316\u65b9\u6cd5\u548c\u4e00\u4e9b\u503c\u5f97\u5173\u6ce8\u7684\u65b9\u5411\u3002<\/blockquote>\n<blockquote>\u6587\u7ae0\u6b22\u8fce\u8f6c\u8f7d\uff0c\u4f46\u8f6c\u8f7d\u65f6\u8bf7\u4fdd\u7559\u672c\u6bb5\u6587\u5b57\uff0c\u5e76\u7f6e\u4e8e\u6587\u7ae0\u7684\u9876\u90e8\n\u4f5c\u8005\uff1a\u5362\u94a7\u8f76(cenalulu)\n\u672c\u6587\u539f\u6587\u5730\u5740\uff1a<a href=\"http:\/\/cenalulu.github.io\/linux\/numa\/\">http:\/\/cenalulu.github.io\/linux\/numa\/<\/a><\/blockquote>\n<h2 id=\"numa\">NUMA\u7b80\u4ecb<\/h2>\n<p>\u8fd9\u90e8\u5206\u5c06\u7b80\u8981\u4ecb\u7ecd\u4e0bNUMA\u67b6\u6784\u7684\u6210\u56e0\u548c\u5177\u4f53\u539f\u7406\uff0c\u5df2\u7ecf\u4e86\u89e3\u7684\u8bfb\u8005\u53ef\u4ee5\u76f4\u63a5\u8df3\u5230\u7b2c\u4e8c\u8282\u3002<\/p>\n<h4 id=\"numa-1\">\u4e3a\u4ec0\u4e48\u8981\u6709NUMA<\/h4>\n<p>\u5728NUMA\u67b6\u6784\u51fa\u73b0\u524d\uff0cCPU\u6b22\u5feb\u7684\u671d\u7740\u9891\u7387\u8d8a\u6765\u8d8a\u9ad8\u7684\u65b9\u5411\u53d1\u5c55\u3002\u53d7\u5230\u7269\u7406\u6781\u9650\u7684\u6311\u6218\uff0c\u53c8\u8f6c\u4e3a\u6838\u6570\u8d8a\u6765\u8d8a\u591a\u7684\u65b9\u5411\u53d1\u5c55\u3002\u5982\u679c\u6bcf\u4e2acore\u7684\u5de5\u4f5c\u6027\u8d28\u90fd\u662fshare-nothing\uff08\u7c7b\u4f3c\u4e8emap-reduce\u7684node\u8282\u70b9\u7684\u4f5c\u4e1a\u5c5e\u6027\uff09\uff0c\u90a3\u4e48\u4e5f\u8bb8\u5c31\u4e0d\u4f1a\u6709NUMA\u3002\u7531\u4e8e\u6240\u6709CPU Core\u90fd\u662f\u901a\u8fc7\u5171\u4eab\u4e00\u4e2a\u5317\u6865\u6765\u8bfb\u53d6\u5185\u5b58\uff0c\u968f\u7740\u6838\u6570\u5982\u4f55\u7684\u53d1\u5c55\uff0c\u5317\u6865\u5728\u54cd\u5e94\u65f6\u95f4\u4e0a\u7684\u6027\u80fd\u74f6\u9888\u8d8a\u6765\u8d8a\u660e\u663e\u3002\u4e8e\u662f\uff0c\u806a\u660e\u7684\u786c\u4ef6\u8bbe\u8ba1\u5e08\u4eec\uff0c\u5148\u5230\u4e86\u628a\u5185\u5b58\u63a7\u5236\u5668\uff08\u539f\u672c\u5317\u6865\u4e2d\u8bfb\u53d6\u5185\u5b58\u7684\u90e8\u5206\uff09\u4e5f\u505a\u4e2a\u62c6\u5206\uff0c\u5e73\u5206\u5230\u4e86\u6bcf\u4e2adie\u4e0a\u3002\u4e8e\u662fNUMA\u5c31\u51fa\u73b0\u4e86\uff01<\/p>\n<h4 id=\"numa-2\">NUMA\u662f\u4ec0\u4e48<\/h4>\n<p>NUMA\u4e2d\uff0c\u867d\u7136\u5185\u5b58\u76f4\u63a5attach\u5728CPU\u4e0a\uff0c\u4f46\u662f\u7531\u4e8e\u5185\u5b58\u88ab\u5e73\u5747\u5206\u914d\u5728\u4e86\u5404\u4e2adie\u4e0a\u3002\u53ea\u6709\u5f53CPU\u8bbf\u95ee\u81ea\u8eab\u76f4\u63a5attach\u5185\u5b58\u5bf9\u5e94\u7684\u7269\u7406\u5730\u5740\u65f6\uff0c\u624d\u4f1a\u6709\u8f83\u77ed\u7684\u54cd\u5e94\u65f6\u95f4\uff08\u540e\u79f0<code>Local Access<\/code>\uff09\u3002\u800c\u5982\u679c\u9700\u8981\u8bbf\u95ee\u5176\u4ed6CPU attach\u7684\u5185\u5b58\u7684\u6570\u636e\u65f6\uff0c\u5c31\u9700\u8981\u901a\u8fc7inter-connect\u901a\u9053\u8bbf\u95ee\uff0c\u54cd\u5e94\u65f6\u95f4\u5c31\u76f8\u6bd4\u4e4b\u524d\u53d8\u6162\u4e86\uff08\u540e\u79f0<code>Remote Access<\/code>\uff09\u3002\u6240\u4ee5NUMA\uff08Non-Uniform Memory Access\uff09\u5c31\u6b64\u5f97\u540d\u3002<\/p>\n<img decoding=\"async\" src=\"http:\/\/nick.txtcc.com\/wp-content\/uploads\/remote_image\/2015\/11\/095158zas.png\" alt=\"numa\" \/>\n<h4 id=\"numa-3\">\u6211\u4eec\u9700\u8981\u4e3aNUMA\u505a\u4ec0\u4e48<\/h4>\n<p>\u5047\u8bbe\u4f60\u662fLinux\u6559\u7236Linus\uff0c\u5bf9\u4e8eNUMA\u67b6\u6784\u4f60\u4f1a\u505a\u54ea\u4e9b\u4f18\u5316\uff1f\u4e0b\u9762\u8fd9\u70b9\u662f\u663e\u800c\u6613\u89c1\u7684\uff1a<\/p>\n<blockquote>\u65e2\u7136CPU\u53ea\u6709\u5728Local-Access\u65f6\u54cd\u5e94\u65f6\u95f4\u624d\u80fd\u6709\u4fdd\u969c\uff0c\u90a3\u4e48\u6211\u4eec\u5c31\u5c3d\u91cf\u628a\u8be5CPU\u6240\u8981\u7684\u6570\u636e\u96c6\u4e2d\u5728\u4ed6local\u7684\u5185\u5b58\u4e2d\u5c31OK\u5566~<\/blockquote>\n<p>\u6ca1\u9519\uff0c\u4e8b\u5b9e\u4e0aLinux\u8bc6\u522b\u5230NUMA\u67b6\u6784\u540e\uff0c\u9ed8\u8ba4\u7684\u5185\u5b58\u5206\u914d\u65b9\u6848\u5c31\u662f\uff1a\u4f18\u5148\u5c1d\u8bd5\u5728\u8bf7\u6c42\u7ebf\u7a0b\u5f53\u524d\u6240\u5904\u7684CPU\u7684Local\u5185\u5b58\u4e0a\u5206\u914d\u7a7a\u95f4\u3002\u5982\u679clocal\u5185\u5b58\u4e0d\u8db3\uff0c\u4f18\u5148\u6dd8\u6c70local\u5185\u5b58\u4e2d\u65e0\u7528\u7684Page\uff08Inactive\uff0cUnmapped\uff09\u3002\n\u90a3\u4e48\uff0c\u95ee\u9898\u6765\u4e86\u3002\u3002\u3002<\/p>\n<hr \/>\n<h2 id=\"numa-4\">NUMA\u7684\u201c\u4e03\u5b97\u7f6a\u201d<\/h2>\n<p>\u51e0\u4e4e\u6240\u6709\u7684\u8fd0\u7ef4\u90fd\u4f1a\u591a\u591a\u5c11\u5c11\u88abNUMA\u5751\u5bb3\u8fc7\uff0c\u8ba9\u6211\u4eec\u770b\u770b\u7a76\u7adf\u6709\u591a\u5c11\u79cd\u5728NUMA\u4e0a\u683d\u7684\u65b9\u5f0f\uff1a<\/p>\n<ul>\n    <li><a href=\"http:\/\/blog.jcole.us\/2010\/09\/28\/mysql-swap-insanity-and-the-numa-architecture\/\">MySQL \u2013 The MySQL \u201cswap insanity\u201d problem and the effects of the NUMA architecture<\/a><\/li>\n    <li><a href=\"http:\/\/frosty-postgres.blogspot.com\/2012\/08\/postgresql-numa-and-zone-reclaim-mode.html\">PostgreSQL \u2013 PostgreSQL, NUMA and zone reclaim mode on linux<\/a><\/li>\n    <li><a href=\"http:\/\/blog.yannickjaquier.com\/hpux\/non-uniform-memory-access-numa-architecture-with-oracle-database-by-examples.html\">Oracle \u2013 Non-Uniform Memory Access (NUMA) architecture with Oracle database by examples<\/a><\/li>\n    <li><a href=\"http:\/\/engineering.linkedin.com\/performance\/optimizing-linux-memory-management-low-latency-high-throughput-databases\">Java \u2013 Optimizing Linux Memory Management for Low-latency \/ High-throughput Databases<\/a><\/li>\n<\/ul>\n<p>\u7a76\u5176\u539f\u56e0\u51e0\u4e4e\u90fd\u548c\uff1a\u201c\u56e0\u4e3aCPU\u4eb2\u548c\u7b56\u7565\u5bfc\u81f4\u7684\u5185\u5b58\u5206\u914d\u4e0d\u5e73\u5747\u201d\u53ca\u201cNUMA Zone Claim\u5185\u5b58\u56de\u6536\u201d\u6709\u5173\uff0c\u800c\u548c\u6570\u636e\u5e93\u79cd\u7c7b\u5e76\u6ca1\u6709\u76f4\u63a5\u8054\u7cfb\u3002\u6240\u4ee5\u4e0b\u6587\u6211\u4eec\u5c31\u62ffMySQL\u4e3a\u4f8b\uff0c\u6765\u770b\u770b\u91cd\u5185\u5b58\u64cd\u4f5c\u5e94\u7528\u5728NUMA\u67b6\u6784\u4e0b\u5230\u5e95\u4f1a\u51fa\u73b0\u4ec0\u4e48\u95ee\u9898\u3002<\/p>\n<h2 id=\"mysqlnuma\">MySQL\u5728NUMA\u67b6\u6784\u4e0a\u4f1a\u51fa\u73b0\u7684\u95ee\u9898<\/h2>\n<p>\u51e0\u4e4e\u6240\u6709<code>NUMA + MySQL<\/code>\u5173\u952e\u5b57\u7684\u641c\u7d22\u7ed3\u679c\u90fd\u4f1a\u6307\u5411\uff1aJeremy Cole\u5927\u795e\u7684\u4e24\u7bc7\u6587\u7ae0<\/p>\n<ul>\n    <li><a href=\"http:\/\/blog.jcole.us\/2010\/09\/28\/mysql-swap-insanity-and-the-numa-architecture\/\">The MySQL \u201cswap insanity\u201d problem and the effects of the NUMA architecture<\/a><\/li>\n    <li><a href=\"http:\/\/blog.jcole.us\/2012\/04\/16\/a-brief-update-on-numa-and-mysql\/\">A brief update on NUMA and MySQL<\/a><\/li>\n<\/ul>\n<p>\u5927\u795e\u89e3\u91ca\u7684\u975e\u5e38\u8be6\u5c3d\uff0c\u6709\u5174\u8da3\u7684\u8bfb\u8005\u53ef\u4ee5\u76f4\u63a5\u770b\u539f\u6587\u3002\u535a\u4e3b\u8fd9\u91cc\u505a\u4e00\u4e2a\u7b80\u5355\u7684\u603b\u7ed3\uff1a<\/p>\n<ul>\n    <li>CPU\u89c4\u6a21\u56e0\u6469\u5c14\u5b9a\u5f8b\u6307\u6570\u7ea7\u53d1\u5c55\uff0c\u800c\u603b\u7ebf\u53d1\u5c55\u7f13\u6162\uff0c\u5bfc\u81f4\u591a\u6838CPU\u901a\u8fc7\u4e00\u6761\u603b\u7ebf\u5171\u4eab\u5185\u5b58\u6210\u4e3a\u74f6\u9888<\/li>\n    <li>\u4e8e\u662fNUMA\u51fa\u73b0\u4e86\uff0cCPU\u5e73\u5747\u5212\u5206\u4e3a\u82e5\u5e72\u4e2aChip\uff08\u4e0d\u591a\u4e8e4\u4e2a\uff09\uff0c\u6bcf\u4e2aChip\u6709\u81ea\u5df1\u7684\u5185\u5b58\u63a7\u5236\u5668\u53ca\u5185\u5b58\u63d2\u69fd<\/li>\n    <li>CPU\u8bbf\u95ee\u81ea\u5df1Chip\u4e0a\u6240\u63d2\u7684\u5185\u5b58\u65f6\u901f\u5ea6\u5feb\uff0c\u800c\u8bbf\u95ee\u5176\u4ed6CPU\u6240\u5173\u8054\u7684\u5185\u5b58\uff08\u4e0b\u6587\u79f0Remote Access\uff09\u7684\u901f\u5ea6\u76f8\u8f83\u6162\u4e09\u500d\u5de6\u53f3<\/li>\n    <li>\u4e8e\u662fLinux\u5185\u6838\u9ed8\u8ba4\u4f7f\u7528CPU\u4eb2\u548c\u7684\u5185\u5b58\u5206\u914d\u7b56\u7565\uff0c\u4f7f\u5185\u5b58\u9875\u5c3d\u53ef\u80fd\u7684\u548c\u8c03\u7528\u7ebf\u7a0b\u5904\u5728\u540c\u4e00\u4e2aCore\/Chip\u4e2d<\/li>\n    <li>\u7531\u4e8e\u5185\u5b58\u9875\u6ca1\u6709\u52a8\u6001\u8c03\u6574\u7b56\u7565\uff0c\u4f7f\u5f97\u5927\u90e8\u5206\u5185\u5b58\u9875\u90fd\u96c6\u4e2d\u5728<code>CPU 0<\/code>\u4e0a<\/li>\n    <li>\u53c8\u56e0\u4e3a<code>Reclaim<\/code>\u9ed8\u8ba4\u7b56\u7565\u4f18\u5148\u6dd8\u6c70\/Swap\u672cChip\u4e0a\u7684\u5185\u5b58\uff0c\u4f7f\u5f97\u5927\u91cf\u6709\u7528\u5185\u5b58\u88ab\u6362\u51fa<\/li>\n    <li>\u5f53\u88ab\u6362\u51fa\u9875\u88ab\u8bbf\u95ee\u65f6\u95ee\u9898\u5c31\u4ee5\u6570\u636e\u5e93\u54cd\u5e94\u65f6\u95f4\u98d9\u9ad8\u751a\u81f3\u963b\u585e\u7684\u5f62\u5f0f\u51fa\u73b0\u4e86<\/li>\n<\/ul>\n<img decoding=\"async\" src=\"http:\/\/nick.txtcc.com\/wp-content\/uploads\/remote_image\/2015\/11\/095159qcY.png\" alt=\"imbalance\" \/>\n<h2 id=\"section\">\u89e3\u51b3\u65b9\u6848<\/h2>\n<p>Jeremy Cole\u5927\u795e\u63a8\u8350\u7684\u4e09\u4e2a\u65b9\u6848\u5982\u4e0b\uff0c\u5982\u679c\u60f3\u8be6\u7ec6\u4e86\u89e3\u53ef\u4ee5\u9605\u8bfb <a href=\"http:\/\/blog.jcole.us\/2012\/04\/16\/a-brief-update-on-numa-and-mysql\/\">\u539f\u6587<\/a><\/p>\n<ul>\n    <li><code>numactl --interleave=all<\/code><\/li>\n    <li>\u5728MySQL\u8fdb\u7a0b\u542f\u52a8\u524d\uff0c\u4f7f\u7528<code>sysctl -q -w vm.drop_caches=3<\/code>\u6e05\u7a7a\u6587\u4ef6\u7f13\u5b58\u6240\u5360\u7528\u7684\u7a7a\u95f4<\/li>\n    <li>Innodb\u5728\u542f\u52a8\u65f6\uff0c\u5c31\u5b8c\u6210\u6574\u4e2a<code>Innodb_buffer_pool_size<\/code>\u7684\u5185\u5b58\u5206\u914d<\/li>\n<\/ul>\n<p>\u8fd9\u4e09\u4e2a\u65b9\u6848\u4e5f\u88ab\u4e1a\u754c\u666e\u904d\u8ba4\u53ef\u53ef\u884c\uff0c\u540c\u65f6\u5728 <a href=\"https:\/\/github.com\/twitter\/mysql\/commit\/19cf63c596c0146a72583998d138190cc285df5c\">Twitter \u76845.5patch<\/a> \u548c <a href=\"http:\/\/www.percona.com\/doc\/percona-server\/5.5\/performance\/innodb_numa_support.html\">Percona 5.5 Improved NUMA Support<\/a> \u4e2d\u4f5c\u4e3a\u529f\u80fd\u88ab\u652f\u6301\u3002<\/p>\n<p>\u4e0d\u8fc7\u8fd9\u79cd\u4e09\u5408\u4e00\u7684\u89e3\u51b3\u65b9\u6848\u53ea\u662f\u51cf\u5c11\u4e86NUMA\u5185\u5b58\u5206\u914d\u4e0d\u5747\uff0c\u5bfc\u81f4\u7684MySQL SWAP\u95ee\u9898\u51fa\u73b0\u7684\u53ef\u80fd\u6027\u3002\u5982\u679c\u5f53\u7cfb\u7edf\u4e0a\u5176\u4ed6\u8fdb\u7a0b\uff0c\u6216\u8005MySQL\u672c\u8eab\u9700\u8981\u5927\u91cf\u5185\u5b58\u65f6\uff0cInnodb Buffer Pool\u7684\u90a3\u4e9bPage\u540c\u6837\u8fd8\u662f\u4f1a\u88abSwap\u5230\u5b58\u50a8\u4e0a\u3002\u4e8e\u662f\u53c8\u5728\u8fd9\u57fa\u7840\u4e0a\u51fa\u73b0\u4e86\u53e6\u5916\u51e0\u4e2a\u8fdb\u9636\u65b9\u6848<\/p>\n<ul>\n    <li>\u914d\u7f6e<code>vm.zone_reclaim_mode = 0<\/code>\u4f7f\u5f97\u5185\u5b58\u4e0d\u8db3\u65f6<code>\u53bbremote memory\u5206\u914d<\/code>\u4f18\u5148\u4e8e<code>swap out local page<\/code><\/li>\n    <li><code>echo -15 &gt; \/proc\/&lt;pid_of_mysqld&gt;\/oom_adj<\/code>\u8c03\u4f4eMySQL\u8fdb\u7a0b\u88ab<code>OOM_killer<\/code>\u5f3a\u5236Kill\u7684\u53ef\u80fd<\/li>\n    <li><a href=\"http:\/\/dev.mysql.com\/doc\/refman\/5.6\/en\/server-options.html#option_mysqld_memlock\">memlock<\/a><\/li>\n    <li>\u5bf9MySQL\u4f7f\u7528Huge Page\uff08\u9ed1\u9b54\u6cd5\uff0c\u5de7\u7528\u4e86Huge Page\u4e0d\u4f1a\u88abswap\u7684\u7279\u6027\uff09<\/li>\n<\/ul>\n<h2 id=\"section-1\">\u91cd\u65b0\u5ba1\u89c6\u95ee\u9898<\/h2>\n<p>\u5982\u679c\u672c\u6587\u5199\u5230\u8fd9\u91cc\u5c31\u8fd9\u4e48\u7ed3\u675f\u4e86\uff0c\u90a3\u548c\u641c\u7d22\u5f15\u64ce\u7ed3\u679c\u4e2d\u5927\u91cf\u7684Step-by-Step\u79d1\u666e\u5e16\u6ca1\u4ec0\u4e48\u5dee\u522b\u3002\u867d\u7136\u6211\u4eec\u7528\u4e86\u5404\u79cd\u53c2\u6570\u8c03\u6574\u51cf\u5c11\u4e86\u95ee\u9898\u53d1\u751f\u6982\u7387\uff0c\u90a3\u4e48\u771f\u7684\u5c31\u5f7b\u5e95\u89e3\u51b3\u4e86\u8fd9\u4e2a\u95ee\u9898\u4e48\uff1f\u95ee\u9898\u6839\u6e90\u7a76\u7adf\u662f\u4ec0\u4e48\uff1f\u8ba9\u6211\u4eec\u56de\u8fc7\u5934\u6765\u91cd\u65b0\u5ba1\u89c6\u4e0b\u8fd9\u4e2a\u95ee\u9898\uff1a<\/p>\n<h4 id=\"numa-interleave\">NUMA Interleave\u771f\u7684\u597d\u4e48\uff1f<\/h4>\n<p><strong>\u4e3a\u4ec0\u4e48<code>Interleave<\/code>\u7684\u7b56\u7565\u5c31\u89e3\u51b3\u4e86\u95ee\u9898\uff1f<\/strong>\n\u501f\u7528\u4e24\u5f20 <a href=\"https:\/\/www.cs.sfu.ca\/~fedorova\/papers\/asplos284-dashti.pdf\">Carrefour\u6027\u80fd\u6d4b\u8bd5<\/a> \u7684\u7ed3\u679c\u56fe\uff0c\u53ef\u4ee5\u770b\u5230\u51e0\u4e4e\u6240\u6709\u60c5\u51b5\u4e0b<code>Interleave<\/code>\u6a21\u5f0f\u4e0b\u7684\u7a0b\u5e8f\u6027\u80fd\u90fd\u8981\u6bd4\u9ed8\u8ba4\u7684\u4eb2\u548c\u6a21\u5f0f\u8981\u9ad8\uff0c\u6709\u65f6\u751a\u81f3\u80fd\u9ad8\u8fbe30%\u3002\u7a76\u5176\u6839\u672c\u539f\u56e0\u662fLinux\u670d\u52a1\u5668\u7684\u5927\u591a\u6570workload\u5206\u5e03\u90fd\u662f\u968f\u673a\u7684\uff1a\u5373\u6bcf\u4e2a\u7ebf\u7a0b\u5728\u5904\u7406\u5404\u4e2a\u5916\u90e8\u8bf7\u6c42\u5bf9\u5e94\u7684\u903b\u8f91\u65f6\uff0c\u6240\u9700\u8981\u8bbf\u95ee\u7684\u5185\u5b58\u662f\u5728\u7269\u7406\u4e0a\u968f\u673a\u5206\u5e03\u7684\u3002\u800c<code>Interleave<\/code>\u6a21\u5f0f\u5c31\u6070\u6070\u662f\u9488\u5bf9\u8fd9\u79cd\u7279\u6027\u5c06\u5185\u5b58page\u968f\u673a\u6253\u6563\u5230\u5404\u4e2aCPU Core\u4e0a\uff0c\u4f7f\u5f97\u6bcf\u4e2aCPU\u7684\u8d1f\u8f7d\u548c<code>Remote Access<\/code>\u7684\u51fa\u73b0\u9891\u7387\u90fd\u5747\u5300\u5206\u5e03\u3002\u76f8\u8f83NUMA\u9ed8\u8ba4\u7684\u5185\u5b58\u5206\u914d\u6a21\u5f0f\uff0c\u6b7b\u677f\u7684\u628a\u5185\u5b58\u90fd\u4f18\u5148\u5206\u914d\u5728\u7ebf\u7a0b\u6240\u5728Core\u4e0a\u7684\u505a\u6cd5\uff0c\u663e\u7136\u666e\u904d\u9002\u7528\u6027\u8981\u5f3a\u5f88\u591a\u3002<\/p>\n<img decoding=\"async\" src=\"http:\/\/nick.txtcc.com\/wp-content\/uploads\/remote_image\/2015\/11\/095159JmP.png\" alt=\"perf1\" \/>\n<img decoding=\"async\" src=\"http:\/\/nick.txtcc.com\/wp-content\/uploads\/remote_image\/2015\/11\/095200ZNt.png\" alt=\"perf2\" \/>\n<p>\u4e5f\u5c31\u662f\u8bf4\uff0c\u50cfMySQL\u8fd9\u79cd\u5916\u90e8\u8bf7\u6c42\u968f\u673a\u6027\u5f3a\uff0c\u5404\u4e2a\u7ebf\u7a0b\u8bbf\u95ee\u5185\u5b58\u5728\u5730\u5740\u4e0a\u5e73\u5747\u5206\u5e03\u7684\u8fd9\u79cd\u5e94\u7528\uff0c<code>Interleave<\/code>\u7684\u5185\u5b58\u5206\u914d\u6a21\u5f0f\u76f8\u8f83\u9ed8\u8ba4\u6a21\u5f0f\u53ef\u4ee5\u5e26\u6765\u4e00\u5b9a\u7a0b\u5ea6\u7684\u6027\u80fd\u63d0\u5347\u3002\n\u6b64\u5916 <a href=\"https:\/\/www.cs.sfu.ca\/~fedorova\/papers\/asplos284-dashti.pdf\">\u5404\u79cd<\/a> <a href=\"http:\/\/www.lst.inf.ethz.ch\/people\/alumni\/zmajo\/publications\/11-systor.pdf\">\u8bba\u6587<\/a> \u4e2d\u4e5f\u90fd\u901a\u8fc7\u5b9e\u9a8c\u8bc1\u5b9e\uff0c\u771f\u6b63\u9020\u6210\u7a0b\u5e8f\u5728NUMA\u7cfb\u7edf\u4e0a\u6027\u80fd\u74f6\u9888\u7684\u5e76\u4e0d\u662f<code>Remote Acess<\/code>\u5e26\u6765\u7684\u54cd\u5e94\u65f6\u95f4\u635f\u8017\uff0c\u800c\u662f\u5185\u5b58\u7684\u4e0d\u5408\u7406\u5206\u5e03\u5bfc\u81f4<code>Remote Access<\/code>\u5c06inter-connect\u8fd9\u4e2a\u5c0f\u6c34\u7ba1\u585e\u6ee1\u6240\u9020\u6210\u7684\u7ed3\u679c\u3002\u800c<code>Interleave<\/code>\u6070\u597d\uff0c\u628a\u8fd9\u79cd\u4e0d\u5408\u7406\u5206\u5e03\u60c5\u51b5\u4e0b\u7684Remote Access\u8bf7\u6c42\u5e73\u5747\u5206\u5e03\u5728\u4e86\u5404\u4e2a\u5c0f\u6c34\u7ba1\u4e2d\u3002\u6240\u4ee5\u8fd9\u4e5f\u662f<code>Interleave<\/code>\u6548\u679c\u5947\u4f73\u7684\u4e00\u4e2a\u539f\u56e0\u3002<\/p>\n<p>\u90a3\u662f\u4e0d\u662f\u7b80\u7b80\u5355\u5355\u7684\u914d\u7f6e\u4e2a<code>Interleave<\/code>\u5c31\u5df2\u7ecf\u628aNUMA\u7684\u7279\u6027\u548c\u6027\u80fd\u53d1\u6325\u5230\u4e86\u6781\u81f4\u5462\uff1f\n\u7b54\u6848\u662f\u5426\u5b9a\u7684\uff0c\u76ee\u524dLinux\u7684\u5185\u5b58\u5206\u914d\u673a\u5236\u5728NUMA\u67b6\u6784\u7684CPU\u4e0a\u8fd8\u6709\u4e00\u5b9a\u7684\u6539\u8fdb\u7a7a\u95f4\u3002\u4f8b\u5982\uff1aDynamic Memory Loaction, Page Replication\u3002<\/p>\n<p><strong>Dynamic Memory Relocation<\/strong>\n\u6211\u4eec\u6765\u60f3\u4e00\u4e0b\u8fd9\u4e2a\u60c5\u51b5\uff1aMySQL\u7684\u7ebf\u7a0b\u5206\u4e3a\u4e24\u79cd\uff0c\u7528\u6237\u7ebf\u7a0b\uff08SQL\u6267\u884c\u7ebf\u7a0b\uff09\u548c\u5185\u90e8\u7ebf\u7a0b\uff08\u5185\u90e8\u529f\u80fd\uff0c\u5982\uff1aflush\uff0cio\uff0cmaster\u7b49\uff09\u3002\u5bf9\u4e8e\u7528\u6237\u7ebf\u7a0b\u6765\u8bf4\u968f\u673a\u6027\u76f8\u5f53\u7684\u5f3a\uff0c\u4f46\u5bf9\u4e8e\u5185\u90e8\u7ebf\u7a0b\u6765\u8bf4\u4ed6\u4eec\u7684\u884c\u4e3a\u4ee5\u53ca\u6240\u8981\u8bbf\u95ee\u7684\u5185\u5b58\u533a\u57df\u5176\u5b9e\u662f\u76f8\u5bf9\u56fa\u5b9a\u4e14\u53ef\u4ee5\u9884\u6d4b\u7684\u3002\u5982\u679c\u80fd\u5bf9\u4e8e\u8fd9\u628a\u8fd9\u90e8\u5206\u5185\u5b58\u96c6\u4e2d\u5230\u8fd9\u4e9b\u5185\u5b58\u7ebf\u7a0b\u6240\u5728\u7684core\u4e0a\u7684\u65f6\u5019\uff0c\u5c31\u80fd\u51cf\u5c11\u5927\u91cf<code>Remote Access<\/code>\uff0c\u6f5c\u5728\u7684\u63d0\u5347\u4f8b\u5982Page Flush\uff0cPurge\u7b49\u529f\u80fd\u7684\u541e\u5410\u91cf\uff0c\u751a\u81f3\u53ef\u4ee5\u63d0\u9ad8MySQL Crash\u540eRecovery\u7684\u901f\u5ea6\uff08\u7531\u4e8erecovery\u662f\u5355\u7ebf\u7a0b\uff09\u3002\n\u90a3\u662f\u5426\u80fd\u5728<code>Interleave<\/code>\u6a21\u5f0f\u4e0b\uff0c\u628a\u90a3\u4e9b\u660e\u663e\u5e94\u8be5\u805a\u96c6\u5728\u4e00\u4e2aCPU\u4e0a\u7684\u5185\u5b58\u96c6\u4e2d\u5728\u4e00\u8d77\u5462\uff1f\n\u5f88\u53ef\u60dc\uff0cDynamic Memory Relocation\u8fd9\u79cd\u6280\u672f\u76ee\u524d\u53ea\u505c\u7559\u5728\u7406\u8bba\u548c\u5b9e\u9a8c\u9636\u6bb5\u3002\u6211\u4eec\u6765\u770b\u4e0b\u96be\u70b9\uff1a\u8981\u505a\u5230\u6309\u7167\u7ebf\u7a0b\u7684\u884c\u4e3a\u52a8\u6001\u7684\u8c03\u6574page\u5728memory\u7684\u5206\u5e03\uff0c\u5c31\u52bf\u5fc5\u9700\u8981\u505a\u7ebf\u7a0b\u548c\u5185\u5b58\u7684\u5b9e\u65f6\u76d1\u63a7\uff08profile\uff09\u3002\u5bf9\u4e8eMemory Access\u8fd9\u79cd\u975e\u5e38\u5f02\u5e38\u9891\u7e41\u7684\u5e95\u5c42\u64cd\u4f5c\u6765\u8bf4\u589e\u52a0profile\u5165\u53e3\u7684\u6027\u80fd\u635f\u8017\u662f\u6781\u5927\u7684\u3002\u5728 <a href=\"http:\/\/cenalulu.github.io\/linux\/all-about-cpu-cache\/\">\u5173\u4e8eCPU Cache\u7a0b\u5e8f\u5e94\u8be5\u77e5\u9053\u7684\u90a3\u4e9b\u4e8b<\/a>\u7684\u8bc4\u8bba\u4e2d\u6211\u4e5f\u63d0\u5230\u8fc7\uff0c\u8fd9\u4e2a\u9053\u7406\u548c\u4e3a\u4ec0\u4e48Linux\u6ca1\u6709\u5168\u5c40\u76d1\u63a7CPU L1\/L2 Cache\u547d\u4e2d\u7387\u5de5\u5177\u7684\u539f\u56e0\u662f\u4e00\u6837\u7684\u3002\u5f53\u7136\u4f18\u5316\u4e0d\u4f1a\u5c31\u6b64\u505c\u6b65\u3002\u4e0a\u6587\u63d0\u5230\u7684<a href=\"https:\/\/www.cs.sfu.ca\/~fedorova\/papers\/asplos284-dashti.pdf\">Carrefour\u7b97\u6cd5<\/a>\u548cLinux\u793e\u533a\u7684<code>Auto NUMA patch<\/code>\u90fd\u662f\u79ef\u6781\u7684\u5c1d\u8bd5\u3002\u4ec0\u4e48\u65f6\u5019\u5185\u5b58profile\u51fa\u73b0\u786c\u4ef6\u7ea7\u522b\uff0c\u7c7b\u4f3c\u4e8eCPU\u4e2d <a href=\"http:\/\/en.wikipedia.org\/wiki\/VTune\">PMU<\/a> \u7684\u529f\u80fd\u65f6\uff0c\u52a8\u6001\u5185\u5b58\u89c4\u5212\u5c31\u4f1a\u5c55\u73b0\u5f88\u5927\u7684\u4ef7\u503c\uff0c\u751a\u81f3\u4f1a\u4f5c\u4e3aLinux Kernel\u7684\u4e00\u4e2a\u5185\u90e8\u529f\u80fd\u6765\u5b9e\u73b0\u3002\u5230\u90a3\u65f6\u6211\u4eec\u518d\u56de\u8fc7\u5934\u6765\u5ba1\u89c6\u8fd9\u4e2a\u65b9\u6848\u7684\u5b9e\u9645\u4ef7\u503c\u3002<\/p>\n<p><strong>Page Replication<\/strong>\n\u518d\u6765\u770b\u4e00\u4e0b\u8fd9\u4e9b\u60c5\u51b5\uff1a\u4e00\u4e9b\u52a8\u6001\u52a0\u8f7d\u7684\u5e93\uff0c\u628a\u4ed6\u4eec\u653e\u5728\u4efb\u4f55\u4e00\u4e2a\u7ebf\u7a0b\u6240\u5728\u7684CPU\u90fd\u4f1a\u5bfc\u81f4\u5176\u4ed6CPU\u4e0a\u7ebf\u7a0b\u7684\u6267\u884c\u6548\u7387\u4e0b\u964d\u3002\u800c\u8fd9\u4e9b\u5171\u4eab\u6570\u636e\u5f80\u5f80\u8bfb\u5199\u6bd4\u975e\u5e38\u9ad8\uff0c\u5982\u679c\u80fd\u628a\u8fd9\u4e9b\u6570\u636e\u7684\u526f\u672c\u5728\u6bcf\u4e2aMemory Zone\u5185\u90fd\u653e\u7f6e\u4e00\u4efd\uff0c\u7406\u8bba\u4e0a\u4f1a\u5e26\u6765\u8f83\u5927\u7684\u6027\u80fd\u63d0\u5347\uff0c\u540c\u65f6\u4e5f\u51cf\u5c11\u5728inter-connect\u4e0a\u51fa\u73b0\u7684\u74f6\u9888\u3002\u5b9e\u65f6\u4e0a\uff0c\u4ecd\u7136\u662f\u4e0a\u6587\u63d0\u5230\u7684<a href=\"https:\/\/www.cs.sfu.ca\/~fedorova\/papers\/asplos284-dashti.pdf\">Carrefour<\/a>\u4e5f\u505a\u4e86\u8fd9\u6837\u7684\u5c1d\u8bd5\u3002\u7531\u4e8e\u7f3a\u4e4f\u786c\u4ef6\u7ea7\u522b\uff08\u5982MESI\u534f\u8bae\u7684\u786c\u4ef6\u652f\u6301\uff09\u548c\u64cd\u4f5c\u7cfb\u7edf\u539f\u751f\u7ea7\u522b\u7684\u652f\u6301\uff0cPage Replication\u5728\u6570\u636e\u4e00\u81f4\u6027\u4e0a\u7ef4\u62a4\u7684\u6210\u672c\u663e\u5f97\u6bd4\u4ed6\u5e26\u6765\u7684\u63d0\u5347\u66f4\u591a\u3002\u56e0\u6b64\u8fd9\u79cd\u5c1d\u8bd5\u4e5f\u4ec5\u4ec5\u505c\u7559\u5728\u7406\u8bba\u9636\u6bb5\u3002\u5f53\u7136\uff0c\u5982\u679c\u80fd\u5f97\u5230\u5e95\u5c42\u7684\u5927\u529b\u652f\u6301\uff0c\u76f8\u4fe1\u8fd9\u4e2a\u65b9\u6848\u8fd8\u662f\u6709\u6781\u5927\u7684\u5b9e\u9645\u4ef7\u503c\u7684\u3002<\/p>\n<h4 id=\"section-2\">\u7a76\u7adf\u662f\u54ea\u91cc\u51fa\u4e86\u95ee\u9898<\/h4>\n<p><strong>NUMA\u7684\u95ee\u9898\uff1f<\/strong>\nNUMA\u672c\u8eab\u6ca1\u6709\u9519\uff0c\u662fCPU\u53d1\u5c55\u7684\u4e00\u79cd\u5fc5\u7136\u8d8b\u52bf\u3002\u4f46\u662fNUMA\u7684\u51fa\u73b0\u4f7f\u5f97\u64cd\u4f5c\u7cfb\u7edf\u4e0d\u5f97\u4e0d\u5173\u6ce8\u5185\u5b58\u8bbf\u95ee\u901f\u5ea6\u4e0d\u5e73\u5747\u7684\u95ee\u9898\u3002<\/p>\n<p><strong>Linux Kernel\u5185\u5b58\u5206\u914d\u7b56\u7565\u7684\u95ee\u9898\uff1f<\/strong>\n\u5206\u914d\u7b56\u7565\u7684\u521d\u8877\u662f\u597d\u7684\uff0c\u4e3a\u4e86\u5185\u5b58\u66f4\u63a5\u8fd1\u9700\u8981\u4ed6\u7684\u7ebf\u7a0b\uff0c\u4f46\u662f\u6ca1\u6709\u8003\u8651\u5230\u6570\u636e\u5e93\u8fd9\u79cd\u5927\u89c4\u6a21\u5185\u5b58\u4f7f\u7528\u7684\u5e94\u7528\u573a\u666f\u3002\u540c\u65f6\u7f3a\u4e4f\u52a8\u6001\u8c03\u6574\u7684\u529f\u80fd\uff0c\u4f7f\u5f97\u8fd9\u79cd\u60b2\u5267\u5728\u5185\u5b58\u5206\u914d\u7684\u90a3\u4e00\u523b\u5c31\u88ab\u4e70\u4e0b\u4e86\u4f0f\u7b14\u3002<\/p>\n<p><strong>\u6570\u636e\u5e93\u8bbe\u8ba1\u8005\u4e0d\u61c2NUMA\uff1f<\/strong>\n\u6570\u636e\u5e93\u8bbe\u8ba1\u8005\u4e5f\u8bb8\u4ece\u4e00\u5f00\u59cb\u5c31\u4e0d\u4f1a\u610f\u8bc6\u5230NUMA\u7684\u6d41\u884c\uff0c\u6216\u8005\u751a\u81f3\u8bf4\u63d0\u4f9b\u4e00\u4e2a\u900f\u660e\u7a33\u5b9a\u7684\u5185\u5b58\u8bbf\u95ee\u662f\u64cd\u4f5c\u7cfb\u7edf\u6700\u57fa\u672c\u7684\u804c\u8d23\u3002\u90a3\u4e48\u5728\u73b0\u72b6\u6539\u53d8\u975e\u5e38\u56f0\u96be\u7684\u60c5\u51b5\u4e0b\uff08\u4e0b\u6587\u4f1a\u63d0\u5230\u4e3a\u4ec0\u4e48\u56f0\u96be\uff09\u662f\u4e0d\u662f\u4f5c\u4e3a\u5185\u5b58\u4f7f\u7528\u8005\u6709\u4e49\u52a1\u66f4\u597d\u7684\u53bb\u7406\u89e3\u4f7f\u7528NUMA\uff1f<\/p>\n<h4 id=\"section-3\">\u603b\u7ed3<\/h4>\n<p>\u5176\u5b9e\u65e0\u8bba\u662fNUMA\u8fd8\u662fLinux Kernel\uff0c\u4ea6\u6216\u662f\u7a0b\u5e8f\u5f00\u53d1\u4ed6\u4eec\u90fd\u6ca1\u6709\u9519\uff0c\u53ea\u662f\u8fd8\u505a\u5f97\u4e0d\u591f\u6781\u81f4\u3002\u5982\u679cNUMA\u5728\u786c\u4ef6\u7ea7\u522b\u53ef\u4ee5\u63d0\u4f9b\u66f4\u591a\u4f4e\u6210\u672c\u7684profile\u63a5\u53e3\uff1b\u5982\u679cLinux Kernel\u53ef\u4ee5\u4f7f\u7528\u66f4\u79d1\u5b66\u7684\u52a8\u6001\u8c03\u6574\u7b56\u7565\uff1b\u5982\u679c\u7a0b\u5e8f\u5f00\u53d1\u4eba\u5458\u66f4\u61c2NUMA\uff0c\u90a3\u4e48\u6211\u4eec\u5b8c\u5168\u53ef\u4ee5\u66f4\u597d\u7684\u53d1\u6325NUMA\u7684\u6027\u80fd\uff0c\u4f7f\u5f97\u65e0\u9650\u6a2a\u5411\u6269\u5c55CPU\u6838\u6570\u4e0d\u518d\u662f\u4e00\u4e2a\u68a6\u60f3\u3002<\/p>\n<ul>\n    <li><a href=\"http:\/\/www.percona.com\/doc\/percona-server\/5.5\/performance\/innodb_numa_support.html\">Percona NUMA aware Configuration<\/a><\/li>\n    <li><a href=\"http:\/\/www.scalemysql.com\/blog\/2014\/09\/05\/numa-system-performance-issues-more-than-just-swapping-to-consider\/\">Numa system performance issues \u2013 more than just swapping to consider<\/a><\/li>\n    <li><a href=\"http:\/\/mikaelronstrom.blogspot.com\/2010\/12\/mysql-server-and-numa-architectures.html\">MySQL Server and NUMA architectures<\/a><\/li>\n    <li><a href=\"http:\/\/blog.wl0.org\/2012\/09\/checking-procnuma_maps-can-be-dangerous-for-mysql-client-connections\/\">Checking \/proc\/pid\/numa_maps can be dangerous for mysql client connections<\/a><\/li>\n    <li><a href=\"http:\/\/dom.as\/2014\/01\/17\/on-swapping-and-kernels\/\">on swapping and kernels<\/a><\/li>\n    <li><a href=\"http:\/\/engineering.linkedin.com\/performance\/optimizing-linux-memory-management-low-latency-high-throughput-databases\">Optimizing Linux Memory Management for Low-latency \/ High-throughput Databases<\/a><\/li>\n    <li><a href=\"http:\/\/www.lst.inf.ethz.ch\/people\/alumni\/zmajo\/publications\/11-systor.pdf\">Memory System Performance in a NUMA Multicore Multiprocessor<\/a><\/li>\n    <li><a href=\"http:\/\/www.sfu.ca\/~sba70\/files\/atc11-blagodurov.pdf\">A Case for NUMA-aware Contention Management on Multicore Systems<\/a><\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>\u672c\u6587\u4eceNUMA\u7684\u4ecb\u7ecd\u5f15\u51fa\u5e38\u89c1\u7684NUMA\u4f7f\u7528\u4e2d\u7684\u9677\u9631\uff0c\u7ee7\u800c\u8ba8\u8bba\u5bf9\u4e8eNUMA\u7cfb\u7edf\u7684\u4f18\u5316\u65b9\u6cd5\u548c\u4e00\u4e9b\u503c\u5f97\u5173\u6ce8\u7684\u65b9\u5411\u3002 \u6587\u7ae0\u6b22\u8fce\u8f6c\u8f7d\uff0c\u4f46\u8f6c\u8f7d\u65f6\u8bf7\u4fdd\u7559\u672c\u6bb5\u6587\u5b57\uff0c\u5e76\u7f6e\u4e8e\u6587\u7ae0\u7684\u9876\u90e8 \u4f5c\u8005\uff1a\u5362\u94a7\u8f76(cenalulu) &#46;&#46;&#46;<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4,101],"tags":[447,440,446],"class_list":["post-1385","post","type-post","status-publish","format-standard","hentry","category-linux","category-db","tag-cpu","tag-linux","tag-numa"],"_links":{"self":[{"href":"https:\/\/nick.txtcc.com\/index.php\/wp-json\/wp\/v2\/posts\/1385","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/nick.txtcc.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/nick.txtcc.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/nick.txtcc.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/nick.txtcc.com\/index.php\/wp-json\/wp\/v2\/comments?post=1385"}],"version-history":[{"count":1,"href":"https:\/\/nick.txtcc.com\/index.php\/wp-json\/wp\/v2\/posts\/1385\/revisions"}],"predecessor-version":[{"id":1390,"href":"https:\/\/nick.txtcc.com\/index.php\/wp-json\/wp\/v2\/posts\/1385\/revisions\/1390"}],"wp:attachment":[{"href":"https:\/\/nick.txtcc.com\/index.php\/wp-json\/wp\/v2\/media?parent=1385"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/nick.txtcc.com\/index.php\/wp-json\/wp\/v2\/categories?post=1385"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/nick.txtcc.com\/index.php\/wp-json\/wp\/v2\/tags?post=1385"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}