{"id":139628,"date":"2024-10-31T19:17:20","date_gmt":"2024-10-31T11:17:20","guid":{"rendered":"https:\/\/server.hk\/cnblog\/139628\/"},"modified":"2024-10-31T19:17:21","modified_gmt":"2024-10-31T11:17:21","slug":"sql-server%e6%95%b8%e6%93%9a%e5%ba%ab%e8%88%87max-degree-of-parallelism%e5%8f%83%e6%95%b8","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/139628\/","title":{"rendered":"SQL Server\u6578\u64da\u5eab\u8207max degree of parallelism\u53c3\u6578"},"content":{"rendered":"<h1 id=\"sql-server%e6%95%b8%e6%93%9a%e5%ba%ab%e8%88%87max-degree-of-parallelism%e5%8f%83%e6%95%b8-WVsGqsmWOj\">SQL Server\u6578\u64da\u5eab\u8207max degree of parallelism\u53c3\u6578<\/h1>\n<p>\u5728\u73fe\u4ee3\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\u4e2d\uff0c\u6027\u80fd\u512a\u5316\u662f\u78ba\u4fdd\u61c9\u7528\u7a0b\u5e8f\u9ad8\u6548\u904b\u884c\u7684\u95dc\u9375\u56e0\u7d20\u4e4b\u4e00\u3002SQL Server\u4f5c\u70ba\u4e00\u500b\u5ee3\u6cdb\u4f7f\u7528\u7684\u95dc\u4fc2\u578b\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff0c\u5176\u6027\u80fd\u8abf\u6574\u7684\u53c3\u6578\u4e4b\u4e00\u4fbf\u662fmax degree of parallelism\uff08\u7c21\u7a31MAXDOP\uff09\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0eMAXDOP\u7684\u6982\u5ff5\u3001\u5176\u5c0dSQL Server\u6027\u80fd\u7684\u5f71\u97ff\uff0c\u4ee5\u53ca\u5982\u4f55\u6839\u64da\u5177\u9ad4\u60c5\u6cc1\u9032\u884c\u8abf\u6574\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%afmax-degree-of-parallelism%ef%bc%88maxdop%ef%bc%89%ef%bc%9f-WVsGqsmWOj\">\u4ec0\u9ebc\u662fmax degree of parallelism\uff08MAXDOP\uff09\uff1f<\/h2>\n<p>MAXDOP\u662fSQL Server\u4e2d\u7684\u4e00\u500b\u914d\u7f6e\u9078\u9805\uff0c\u7528\u65bc\u63a7\u5236\u67e5\u8a62\u57f7\u884c\u6642\u53ef\u4ee5\u4f7f\u7528\u7684\u6700\u5927\u4e26\u884c\u8655\u7406\u5668\u6578\u91cf\u3002\u7c21\u55ae\u4f86\u8aaa\uff0c\u7576\u4e00\u500b\u67e5\u8a62\u88ab\u57f7\u884c\u6642\uff0cSQL Server\u53ef\u4ee5\u5c07\u5176\u5206\u89e3\u70ba\u591a\u500b\u5b50\u4efb\u52d9\uff0c\u4e26\u540c\u6642\u5728\u591a\u500b\u8655\u7406\u5668\u4e0a\u57f7\u884c\u9019\u4e9b\u5b50\u4efb\u52d9\u3002MAXDOP\u53c3\u6578\u7684\u8a2d\u7f6e\u6c7a\u5b9a\u4e86\u9019\u4e9b\u5b50\u4efb\u52d9\u53ef\u4ee5\u4f7f\u7528\u7684\u6700\u5927\u8655\u7406\u5668\u6578\u91cf\u3002<\/p>\n<h2 id=\"maxdop%e7%9a%84%e9%bb%98%e8%aa%8d%e8%a8%ad%e7%bd%ae-WVsGqsmWOj\">MAXDOP\u7684\u9ed8\u8a8d\u8a2d\u7f6e<\/h2>\n<p>\u5728SQL Server\u4e2d\uff0cMAXDOP\u7684\u9ed8\u8a8d\u503c\u901a\u5e38\u662f0\uff0c\u9019\u610f\u5473\u8457\u67e5\u8a62\u53ef\u4ee5\u4f7f\u7528\u6240\u6709\u53ef\u7528\u7684\u8655\u7406\u5668\u3002\u7136\u800c\uff0c\u9019\u4e26\u4e0d\u4e00\u5b9a\u662f\u6700\u4f73\u9078\u64c7\uff0c\u7279\u5225\u662f\u5728\u591a\u6838\u8655\u7406\u5668\u74b0\u5883\u4e2d\u3002\u904e\u9ad8\u7684\u4e26\u884c\u5ea6\u53ef\u80fd\u5c0e\u81f4\u8cc7\u6e90\u7af6\u722d\uff0c\u5f9e\u800c\u5f71\u97ff\u6574\u9ad4\u6027\u80fd\u3002<\/p>\n<h2 id=\"maxdop%e7%9a%84%e5%bd%b1%e9%9f%bf%e5%9b%a0%e7%b4%a0-WVsGqsmWOj\">MAXDOP\u7684\u5f71\u97ff\u56e0\u7d20<\/h2>\n<p>\u8abf\u6574MAXDOP\u53c3\u6578\u6642\uff0c\u9700\u8981\u8003\u616e\u4ee5\u4e0b\u5e7e\u500b\u56e0\u7d20\uff1a<\/p>\n<ul>\n<li><strong>\u67e5\u8a62\u985e\u578b\uff1a<\/strong>\u67d0\u4e9b\u67e5\u8a62\uff08\u5982\u5927\u6578\u64da\u96c6\u7684\u805a\u5408\u67e5\u8a62\uff09\u53ef\u80fd\u6703\u5f9e\u9ad8\u4e26\u884c\u5ea6\u4e2d\u53d7\u76ca\uff0c\u800c\u5176\u4ed6\u67e5\u8a62\uff08\u5982\u5c0f\u6578\u64da\u96c6\u7684\u67e5\u8a62\uff09\u5247\u53ef\u80fd\u56e0\u70ba\u4e0a\u4e0b\u6587\u5207\u63db\u800c\u53d7\u5230\u5f71\u97ff\u3002<\/li>\n<li><strong>\u7cfb\u7d71\u8cc7\u6e90\uff1a<\/strong>\u5982\u679c\u7cfb\u7d71\u8cc7\u6e90\u6709\u9650\uff0c\u904e\u9ad8\u7684MAXDOP\u8a2d\u7f6e\u53ef\u80fd\u6703\u5c0e\u81f4CPU\u904e\u8f09\uff0c\u5f9e\u800c\u5f71\u97ff\u5176\u4ed6\u6b63\u5728\u904b\u884c\u7684\u67e5\u8a62\u3002<\/li>\n<li><strong>\u5de5\u4f5c\u8ca0\u8f09\uff1a<\/strong>\u5728\u9ad8\u4e26\u767c\u7684\u74b0\u5883\u4e2d\uff0c\u9069\u7576\u7684MAXDOP\u8a2d\u7f6e\u53ef\u4ee5\u5e6b\u52a9\u5e73\u8861\u8ca0\u8f09\uff0c\u907f\u514d\u67d0\u4e9b\u67e5\u8a62\u4f54\u7528\u904e\u591a\u8cc7\u6e90\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%a6%82%e4%bd%95%e8%a8%ad%e7%bd%aemaxdop-WVsGqsmWOj\">\u5982\u4f55\u8a2d\u7f6eMAXDOP<\/h2>\n<p>\u5728SQL Server\u4e2d\uff0c\u53ef\u4ee5\u901a\u904e\u4ee5\u4e0b\u65b9\u5f0f\u8a2d\u7f6eMAXDOP\uff1a<\/p>\n<pre><code>EXEC sp_configure 'show advanced options', 1;\nRECONFIGURE;\nEXEC sp_configure 'max degree of parallelism', [desired_value];\nRECONFIGURE;<\/code><\/pre>\n<p>\u5728\u4e0a\u8ff0\u4ee3\u78bc\u4e2d\uff0c\u5c07[desired_value]\u66ff\u63db\u70ba\u6240\u9700\u7684\u6700\u5927\u4e26\u884c\u8655\u7406\u5668\u6578\u91cf\u3002\u4f8b\u5982\uff0c\u5982\u679c\u5e0c\u671b\u5c07MAXDOP\u8a2d\u7f6e\u70ba4\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\uff1a<\/p>\n<pre><code>EXEC sp_configure 'max degree of parallelism', 4;\nRECONFIGURE;<\/code><\/pre>\n<h2 id=\"%e6%9c%80%e4%bd%b3%e5%af%a6%e8%b8%90-WVsGqsmWOj\">\u6700\u4f73\u5be6\u8e10<\/h2>\n<p>\u5728\u8a2d\u7f6eMAXDOP\u6642\uff0c\u4ee5\u4e0b\u662f\u4e00\u4e9b\u6700\u4f73\u5be6\u8e10\uff1a<\/p>\n<ul>\n<li>\u5c0d\u65bcOLTP\uff08\u5728\u7dda\u4e8b\u52d9\u8655\u7406\uff09\u5de5\u4f5c\u8ca0\u8f09\uff0c\u5efa\u8b70\u5c07MAXDOP\u8a2d\u7f6e\u70ba1\uff0c\u4ee5\u907f\u514d\u8cc7\u6e90\u7af6\u722d\u3002<\/li>\n<li>\u5c0d\u65bcOLAP\uff08\u5728\u7dda\u5206\u6790\u8655\u7406\uff09\u5de5\u4f5c\u8ca0\u8f09\uff0c\u53ef\u4ee5\u6839\u64da\u67e5\u8a62\u7684\u8907\u96dc\u6027\u548c\u6578\u64da\u96c6\u7684\u5927\u5c0f\u8abf\u6574MAXDOP\u3002<\/li>\n<li>\u5b9a\u671f\u76e3\u63a7\u67e5\u8a62\u6027\u80fd\uff0c\u6839\u64da\u5be6\u969b\u60c5\u6cc1\u8abf\u6574MAXDOP\u8a2d\u7f6e\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b5%90%e8%ab%96-WVsGqsmWOj\">\u7d50\u8ad6<\/h2>\n<p>MAXDOP\u662fSQL Server\u6027\u80fd\u8abf\u6574\u4e2d\u7684\u4e00\u500b\u91cd\u8981\u53c3\u6578\uff0c\u6b63\u78ba\u7684\u8a2d\u7f6e\u53ef\u4ee5\u986f\u8457\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u3002\u901a\u904e\u4e86\u89e3\u5176\u5de5\u4f5c\u539f\u7406\u53ca\u5f71\u97ff\u56e0\u7d20\uff0c\u6578\u64da\u5eab\u7ba1\u7406\u54e1\u53ef\u4ee5\u6839\u64da\u5177\u9ad4\u7684\u5de5\u4f5c\u8ca0\u8f09\u548c\u7cfb\u7d71\u8cc7\u6e90\u9032\u884c\u5408\u7406\u7684\u8abf\u6574\u3002\u5c0d\u65bc\u5e0c\u671b\u5728\u9999\u6e2f\u5c0b\u627e\u9ad8\u6548\u80fd\u7684\u6578\u64da\u5eab\u89e3\u6c7a\u65b9\u6848\u7684\u7528\u6236\uff0c<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u548c<a href=\"https:\/\/server.hk\">\u4e91\u670d\u52a1\u5668<\/a>\u63d0\u4f9b\u4e86\u9748\u6d3b\u7684\u9078\u64c7\uff0c\u80fd\u5920\u6eff\u8db3\u4e0d\u540c\u7684\u9700\u6c42\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3SQL Server\u6578\u64da\u5eab\u4e2d\u7684max degree of parallelism\u53c3\u6578\uff0c\u5982\u4f55\u5f71\u97ff\u67e5\u8a62\u6027\u80fd\u53ca\u8cc7\u6e90\u5229\u7528\uff0c\u512a\u5316\u6578\u64da\u8655\u7406\u6548\u7387\u3002<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-139628","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/139628","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"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=139628"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/139628\/revisions"}],"predecessor-version":[{"id":139629,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/139628\/revisions\/139629"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=139628"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=139628"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=139628"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}