<\/span><\/h3>\n\n\n\n\u6211\u4eec\u5728\u5b9e\u73b0\u5411\u91cf\u5316\u6267\u884c\u5668\u8fc7\u7a0b\u4e2d\uff0c\u4f1a\u5c3d\u91cf\u60f3\u529e\u6cd5\u89e6\u53d1\u7f16\u8bd1\u5668\u7684\u81ea\u52a8 SIMD \u4f18\u5316\uff0c\u4e0d\u80fd\u81ea\u52a8\u89e6\u53d1\u7684\uff0c\u4f1a\u5c1d\u8bd5\u8fdb\u884c\u624b\u52a8 SIMD \u4f18\u5316\u3002 \u624b\u52a8 SIMD \u4f18\u5316\u7684\u4ee3\u7801\u76f4\u63a5\u5168\u5c40\u641c\u7d22 SSE \u548c AV2 \u5c31\u53ef\u4ee5\u770b\u5230\u3002<\/p>\n\n\n\n
\u4e0b\u56fe\u4e2d\u5217\u51fa\u4e86\u6211\u4eec\u90e8\u5206\u8fdb\u884c\u624b\u52a8 SIMD \u4f18\u5316\u7684\u64cd\u4f5c\uff1a<\/p>\n\n\n\n![\"Screen](\"https:\/\/blog.bcmeng.com\/post\/media\/16314356882101\/Screen%20Shot%202021-09-12%20at%207.55.43%20PM.png\")
<\/figure>\n\n\n\n<\/span>StarRocks \u81ea\u9002\u5e94\u4f18\u5316<\/span><\/h3>\n\n\n\n\u6211\u4eec\u77e5\u9053\uff0c\u4e0d\u540c\u7684\u6570\u636e\u5206\u5e03\u6216\u8005\u6570\u636e\u7279\u70b9\u5f80\u5f80\u9700\u8981\u4e0d\u540c\u7684\u7b97\u6cd5\u6216\u8005\u6570\u636e\u7ed3\u6784\u8fdb\u884c\u5904\u7406\uff0c\u6240\u4ee5\u5728 StarRocks \u5411\u91cf\u5316\u5f15\u64ce\u4e2d\uff0c\u6211\u4eec\u8fdb\u884c\u6bd4\u8f83\u591a\u7684\u81ea\u9002\u5e94\u4f18\u5316\u3002<\/p>\n\n\n\n
\u9664\u4e86\u4e0a\u9762\u63d0\u5230\u7684\u5b58\u50a8\u5c42\u7684\u81ea\u9002\u5e94\u9884\u805a\u5408\uff0c\u81ea\u9002\u5e94\u5ef6\u8fdf\u7269\u5316\u3002\u6211\u4eec\u5728\u4e0b\u9762\u51e0\u5904\u4e5f\u5b9e\u73b0\u4e86\u81ea\u9002\u5e94\u4f18\u5316\uff1a<\/p>\n\n\n\n
- Runtime Filter \u8fc7\u6ee4\uff1a \u6709\u8fc7\u6ee4\u5ea6\u65f6\u518d\u8fdb\u884c\u8fc7\u6ee4\uff0c\u6ca1\u6709\u8fc7\u6ee4\u5ea6\u65f6\u5c31\u4e0d\u518d\u8fdb\u884c\u8fc7\u6ee4<\/li>
- \u805a\u5408 Hash Map\u7684\u4f7f\u7528\uff1a \u4f4e\u57fa\u6570\u65f6\u76f4\u63a5\u4f7f\u7528phmap::flat_hash_map, \u9ad8\u57fa\u6570\u65f6\u4f7f\u7528 phmap::parallel_flat_hash_map<\/li>
- \u4e24\u9636\u6bb5 Streaming \u805a\u5408\u65f6\uff1a\u6709\u805a\u5408\u6548\u679c\u662f\u8fdb Hash \u8868\uff0c\u6ca1\u6709\u805a\u5408\u6548\u679c\u65f6\u76f4\u63a5\u53d1\u9001\u6570\u636e<\/li>
- \u591a\u4e2a Filter \u8fc7\u6ee4\u65f6\u4f55\u65f6\u8fdb\u884c Chunk \u91cd\u6574<\/li><\/ul>\n\n\n\n
<\/span>StarRocks \u5982\u4f55\u8fdb\u884c\u6027\u80fd\u4f18\u5316<\/span><\/h3>\n\n\n\n\u548c CBO \u4f18\u5316\u5668\u4e0d\u540c\uff0c\u5927\u5bb6\u53ef\u4ee5\u770b\u5230\u5411\u91cf\u5316\u6267\u884c\u672c\u8eab\u6846\u67b6\u4e0a\u7684\u98ce\u9669\u4e0d\u5927\uff0c\u6240\u4ee5\u4e0d\u540c\u7cfb\u7edf\u5411\u91cf\u5316\u6267\u884c\u5668\u7684\u6700\u7ec8\u6548\u679c\u5982\u4f55\uff0c\u5176\u5b9e\u5c31\u662f\u770b\u7ec6\u8282\u4e0a\u7684\u6027\u80fd\u4f18\u5316\u3002<\/p>\n\n\n\n
StarRocks \u7684\u6027\u80fd\u4f18\u5316\u4e3b\u8981\u4ece 5 \u4e2a\u65b9\u9762\u8fdb\u884c\uff1a<\/p>\n\n\n\n
- \u7b97\u6cd5\u548c\u6570\u636e\u7ed3\u6784\u7684\u9009\u62e9<\/strong>\uff1a\u7b97\u6cd5\u548c\u6570\u636e\u7ed3\u6784\u662f\u6700\u57fa\u7840\u7684\uff0c\u4f46\u6709\u4e9b\u60c5\u51b5\u4e0b\u7684\u9009\u62e9\u548c\u4f18\u5316\u5374\u5e76\u6ca1\u6709\u90a3\u4e48\u7b80\u5355\u3002 \u6bd4\u5982\uff1a\u8fdb\u884c Int \u7c7b\u578b\u53bb\u91cd\u65f6\uff0c\u6211\u4eec\u5e94\u8be5\u9009\u62e9Bitmap \u8fd8\u662f HashSet, \u5176\u5b9e\u662f\u4e0d\u4e00\u5b9a\u7684\uff0c\u56e0\u4e3a\u4e24\u8005\u90fd\u6709\u660e\u663e\u4f18\u52bf\u7684\u573a\u666f<\/li>
- \u81ea\u9002\u5e94<\/strong>\uff1a \u5728\u8fdb\u884c\u6027\u80fd\u4f18\u5316\u65f6\uff0c\u5982\u679c\u6211\u4eec\u77e5\u9053\u7684\u4e0a\u4e0b\u6587\u8db3\u591f\u591a\uff0c\u6211\u4eec\u5c31\u53ef\u4ee5\u8fdb\u884c\u66f4\u591a\u9488\u5bf9\u6027\u7684\u4f18\u5316\uff0c\u4f46\u662f\u6709\u4e9b\u4e0a\u4e0b\u6587\u53ef\u80fd\u53ea\u6709\u5728\u8fd0\u884c\u65f6\u6211\u4eec\u624d\u80fd\u77e5\u9053\uff0c\u6240\u4ee5\u6b64\u65f6\u6211\u4eec\u5c31\u9700\u8981\u8fdb\u884c\u81ea\u9002\u5e94\u7b56\u7565<\/li>
- SIMD \u6307\u4ee4\u4f18\u5316<\/strong>\uff1a \u5728\u6309\u5217\u5904\u7406\u7684\u524d\u63d0\u4e0b\uff0c\u5c3d\u53ef\u80fd\u81ea\u52a8\u6216\u8005\u624b\u52a8\u8fdb\u884cSIMD \u6307\u4ee4\u4f18\u5316<\/li>
- C++ Low Level \u4f18\u5316<\/strong>\uff1a \u6bd4\u5982 Copy To Move\uff0c\u4e0d\u540cAPI\u7684\u9009\u62e9\uff0c\u7f16\u8bd1\u671f\u8fd0\u7b97\uff0cmemcpy, memcmp, \u5f02\u6b65\uff0c\u9501\u7b49\u3002 \u6709\u4e9b\u89c4\u5219\u53ef\u80fd\u5927\u5bb6\u90fd\u77e5\u9053\uff0c\u4f46\u662f\u5b9e\u9645\u5b9e\u73b0\u65f6\u5c31\u53ef\u80fd\u5ffd\u7565\u6216\u8005\u6ca1\u6709\u610f\u8bc6\u5230\uff0c\u6bd4\u5982 \u5927\u5bf9\u8c61\u7684 Move\uff0c\u5f88\u591a\u65f6\u5019\u4e00\u4e2a\u7ec6\u8282\u7684\u4e0d\u6ce8\u610f\uff0c\u5c31\u53d8\u6210\u4e86 Copy<\/li>
- CPU Cache \u4f18\u5316<\/strong>\uff1a\u5f53\u6211\u4eec CPU \u6307\u4ee4\u7684\u4e2a\u6570\u548c\u6548\u7387\u5df2\u7ecf\u4f18\u5316\u5230\u6700\u4f73\u7684\u65f6\u5019\uff0c\u6211\u4eec\u5c31\u9700\u8981\u4f18\u5316 CPU Cache \u4e86\u3002 \u5305\u62ec \u5185\u5b58\u5bf9\u9f50\uff0cPadding,\u65f6\u95f4\u548c\u7a7a\u95f4\u5c40\u90e8\u6027\u4f18\u5316\uff0cPrefetching\uff0cCache Blocking\uff0c\u66f4\u7d27\u51d1\u7684\u5185\u5b58\u5e03\u5c40\uff0cCache Line Conflict\uff0c Code Cache \u4f18\u5316\u3002<\/li><\/ol>\n\n\n\n
\u5173\u4e8e\u540e\u97624\u70b9\uff0c\u6211\u4e4b\u540e\u4f1a\u5199\u6587\u7ae0\u8be6\u7ec6\u8bf4\u660e\u548c\u89e3\u91ca<\/strong>\u3002<\/p>\n\n\n\n<\/span>\u7ed3\u8bed<\/span><\/h2>\n\n\n\n\u672c\u6587\u4e3b\u8981\u8fdb\u884c\u4e86 StarRocks CBO \u4f18\u5316\u5668\u548c\u5411\u91cf\u5316\u6267\u884c\u5668\u4e24\u4e2a\u6a21\u5757\u7684\u6e90\u7801\u5bfc\u8bfb\uff0c\u4e0b\u4e00\u7bc7\u6587\u7ae0\u4f1a\u8fdb\u884c Pipeline \u5e76\u884c\u6267\u884c\u5f15\u64ce\uff0cUpdate \u5b58\u50a8\u5f15\u64ce\uff0c\u5bfc\u5165\u548c Compaction \u5411\u91cf\u5316\uff0cHive \u5916\u8868\uff0cGlobal Runtime filter, Lateral Join, Fast Decimal, Array \u7c7b\u578b \u7b49\u6a21\u5757\u6216\u8005\u529f\u80fd\u7684\u6e90\u7801\u5bfc\u8bfb\u3002<\/p>\n\n\n\n
\u5982\u679c\u4f60\u5bf9\u6570\u636e\u5e93\u7814\u53d1\uff0c\u6d4b\u8bd5\uff0c\u89e3\u51b3\u65b9\u6848\uff0cDBA\uff0c\u9500\u552e\u611f\u5174\u8da3\uff0c\u6b22\u8fce\u5c06\u4f60\u7684\u7b80\u5386\u53d1\u9001\u5230 kangkaisen@starrocks.com\u3002<\/p>","protected":false},"excerpt":{"rendered":"
\u672c\u6587\u4e3b\u8981\u8fdb\u884c\u4e86 StarRocks CBO \u4f18\u5316\u5668\u548c\u5411\u91cf\u5316\u6267\u884c\u5668\u4e24\u4e2a\u6a21\u5757\u7684\u6e90\u7801\u5bfc\u8bfb<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[79],"tags":[110],"class_list":["post-8671","post","type-post","status-publish","format-standard","hentry","category-79","tag-starrocks"],"_links":{"self":[{"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/posts\/8671","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/comments?post=8671"}],"version-history":[{"count":3,"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/posts\/8671\/revisions"}],"predecessor-version":[{"id":8676,"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/posts\/8671\/revisions\/8676"}],"wp:attachment":[{"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/media?parent=8671"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/categories?post=8671"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/tags?post=8671"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}