{"id":2200,"date":"2019-01-10T13:47:05","date_gmt":"2019-01-10T05:47:05","guid":{"rendered":"http:\/\/www.5x44.cn\/?p=2200"},"modified":"2019-01-11T10:34:37","modified_gmt":"2019-01-11T02:34:37","slug":"%e5%88%86%e5%b1%82%e4%bb%a4%e7%89%8c%e6%a1%b6%e5%8e%9f%e7%90%86","status":"publish","type":"post","link":"https:\/\/www.5x44.cn\/?p=2200","title":{"rendered":"\u5206\u5c42\u4ee4\u724c\u6876\u539f\u7406"},"content":{"rendered":"\n<p>\u539f\u6587\u5730\u5740\uff1a<a href=\"http:\/\/luxik.cdi.cz\/~devik\/qos\/htb\/manual\/theory.htm\">http:\/\/luxik.cdi.cz\/~devik\/qos\/htb\/manual\/theory.htm<\/a><\/p>\n\n\n\n<p><strong>\u5b9a\u4e49<\/strong><\/p>\n\n\n\n<p>\u5148\u5b9a\u4e49\u4e00\u4e9b\u5168\u5c40\u540d\u8bcd\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><strong>\u7c7b<\/strong>\u6709\u4e0e\u5176\u76f8\u5173\u7684\u62c5\u4fdd\u901f\u5ea6<strong>AR<\/strong>\uff0c\u5cf0\u503c\u901f\u5ea6<strong>CR<\/strong>\uff0c\u4f18\u5148\u7ea7<strong>P<\/strong>\uff0c<strong>level<\/strong>\u548cquantum <strong>Q<\/strong>\u3002\u5b83\u53ef\u4ee5\u6709\u53cc\u4eb2\u70b9\u8282\u3002\u6211\u4eec\u77e5\u9053\u771f\u5b9e\u7684\u901f\u5ea6\u6216<strong>R<\/strong>\uff0c\u8fd9\u4e2a\u901f\u5ea6\u662f\u5728\u5f88\u77ed\u7684\u5468\u671f\u5185\u6570\u636e\u79bb\u5f00\u7c7b\u6d4b\u5f97\u3002\u5bf9\u4e8e\u5185\u90e8\u7c7b<strong>R<\/strong>\u662f\u6240\u6709\u5b50\u7c7b\u7684\u4e4b\u548c\u3002<\/li><li><strong>\u53f6\u5b50<\/strong>\u662f\u6ca1\u6709\u5b50\u7c7b\u7684\u7c7b\u3002\u53ea\u6709\u53f6\u5b50\u53ef\u4ee5\u4fdd\u5b58\u6570\u636e\u5305\u961f\u5217\u3002<\/li><li>\u7c7b\u7684<strong>Level<\/strong>\u51b3\u5b9a\u4e86\u5b83\u5728\u5c42\u6b21\u7ed3\u6784\u7684\u4ec0\u4e48\u4f4d\u7f6e\u3002\u53f6\u5b50\u7684Level\u662f0\uff0c\u6839\u7c7b\u7684Level\u662f\u201c\u603b\u5c42\u7ea7-1\u201d\uff0c\u5e76\u4e14\u6bcf\u4e00\u4e2a\u5185\u90e8\u7c7b\u7684level\u90fd\u6bd4\u5176\u7236\u7c7b\u5c111\u3002\u4e0b\u9762\u7684\u56fe\u7247\uff08LEVEL_COUNT=3\uff09<\/li><li>\u7c7b\u7684<strong>\u6a21\u5f0f<\/strong>\u662f\u4eba\u4e3a\u8bbe\u5b9a\u7684\u503c\uff0c\u53ef\u4ee5\u7531R,AR,CR\u8ba1\u7b97\u5f97\u6765\u3002\u53ef\u80fd\u7684\u6a21\u5f0f\u6709\uff1a<strong>\u7ea2\uff1aR&gt;CR<\/strong> ; <strong>\u9ec4\uff1aR&lt;=CR<\/strong> AND<strong> R&gt;AR<\/strong>\uff1b<strong>\u7eff\uff1a\u5176\u5b83<\/strong><\/li><li><strong>D(c)<\/strong>\u662f\u6240\u6709c\u7684\u5b50\u7c7b\u7684\u53f6\u5b50\u8282\u70b9\u7684\u50a8\u5907\uff08\u50a8\u5907\u4e86\u591a\u4f59\u7684\u6d41\u91cf\uff09\u7684\u5217\u8868\uff0c\u5e76\u4e14\u5728\u53f6\u5b50\u8282\u70b9\u548cc\u4e4b\u524d\uff08\u5305\u542b\u5176\u672c\u8eab\uff09\u662f\u201c<strong>\u9ec4\u8272<\/strong>\u201d\u3002\u6362\u53e5\u8bdd\u8bf4\uff0cD(c)\u662f\u6240\u6709\u60f3\u4ece\u501f\u6d41\u91cf\u7684\u53f6\u5b50\u7684\u5217\u8868\u3002<\/li><\/ul>\n\n\n\n<p><strong>\u94fe\u63a5\u5171\u4eab\u76ee\u7684<\/strong><\/p>\n\n\n\n<p>\u73b0\u5728\u6211\u4eec\u80fd\u4e3a<strong>R<\/strong>\u5b9a\u4e49<strong>\u94fe\u63a5\u5171\u4eab\u76ee\u7684<\/strong>\u4e86\u3002\u5bf9\u4e8e\u6bcf\u4e00\u4e2ac\u7c7b\uff0c\u5b83\u5e94\u8be5\u4fdd\u5b58<br>Rc = min(CRc, ARc + Bc)       [eq1]<br>                    Qc  Rp<br>\u8fd9\u91ccBc=&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;  iff min[Pi over D(p)]>=Pc  [eq2]<br>                 sum[Qi  over D(p)  where Pi=Pc]<br>Bc = 0  otherwise    [eq3]<br>\u8fd9\u91cc\u7684p\u662fc\u7684\u7236\u7c7b\u3002\u5982\u679c\u6ca1\u6709p\u90a3\u4e48Bc=0\u3002\u5bf9\u4e8eBc\u7684\u4e24\u4e2a\u5b9a\u4e49\u53cd\u6620\u4e86\u961f\u5217\u7684\u4f18\u5148\u7ea7\u2014\u2014\u5f53\u5728D(p)\u4e2d\u6709\u50a8\u5907\u6d41\u91cf\u65f6\uff0c\u5b50\u7c7b\u4e2d\u6709\u5927\u91cf\u7684\u9ad8\u4f18\u5148\u7ea7\u7684\u5206\u7c7b\u65f6\uff0c\u6d41\u91cf\u5e94\u8be5\u5206\u7ed9\u9ad8\u4f18\u5148\u7ea7\u7684\u7c7b\u4f7f\u7528\uff0c\u800c\u4e0d\u662f\u81ea\u5df1\u3002\u6839\u636eQ\u7684\u503c\uff0c\u6709\u4e00\u5c0f\u90e8\u5206\u591a\u4f59\u7684\u6d41\u91cf\u88ab\u5206\u914d\u5230\u6240\u6709\u4f18\u5148\u7ea7\u76f8\u540c\u7684\u53f6\u5b50\u8282\u70b9\u4e0a\u3002\u56e0\u4e3aRp\u5728[2]\u4e2d\u88ab\u516c\u5f0f[1]\u9012\u5f52\u5b9a\u4e49\u3002\u6362\u53e5\u8bdd\u8bf4\u5982\u679c\u6d41\u91cf\u6ca1\u6709\u8d85\u8fc7\u5cf0\u503c\u6d41\u91cfCR\uff0c\u90a3\u4e48\u62c5\u4fdd\u901f\u5ea6\uff08AR\uff09\u53ef\u4ee5\u5f97\u5230\u4fdd\u8bc1\u3002\u6839\u636eQ\u7684\u6bd4\u4f8b\uff0c\u8d85\u51fa\u7684\u6d41\u91cfbw\uff0c\u4f1a\u88ab\u5206\u7ed9\u6709\u6d41\u91cf\u50a8\u5907\u7684\u53f6\u5b50\u8282\u70b9\u3002<\/p>\n\n\n\n<p><strong>\u5907\u7528\u5ef6\u8fdf\u76ee\u7684<\/strong><\/p>\n\n\n\n<p>\u6211\u4eec\u60f3\u786e\u5b9a\u7c7b\u662f\u5b64\u7acb\u7684\u3002\u6240\u4ee5\u6539\u53d8\u4e00\u4e2a\u7c7b\u7684\u901f\u5ea6\u5e94\u8be5\u4e0d\u4f1a\u5bf9\u5176\u5b83\u7c7b\u9020\u6210\u5ef6\u8fdf\u3002\u9664\u975e\u90fd\u5411\u540c\u4e00\u4e2a\u7956\u5148\u7c7b\u501f\u7528\u6d41\u91cf\u3002\u540c\u6837\u9ad8\u4f18\u5148\u7ea7\u7684\u7c7b\u5e94\u8be5\u6709\u4f4e\u5ef6\u8fdf\uff08\u5047\u8bbe\u4ed6\u4eec\u90fd\u4ece\u540c\u4e00\u7ea7\u501f\u7528\u6d41\u91cf\uff09\u3002<\/p>\n\n\n\n<p><strong>CBQ\u6ce8\u610f<\/strong><\/p>\n\n\n\n<p>\u5982\u679c\u4f60\u6ce8\u610f\u5230[1]\uff0c\u4f60\u4f1a\u53d1\u73b0\u6211\u4eec\u7684\u76ee\u7684\u662f\u5bf9CBQ\u7684\u5b50\u96c6\u6709\u66f4\u591a\u7684\u9650\u5236\u3002\u6240\u4ee5\u5982\u679c\u6211\u4eec\u66f4\u5bb9\u6613\u80fd\u6ee1\u8db3HTB\uff0c\u56e0\u6b64HTB\u6bd4CQB\u66f4\u53cb\u597d\u3002\uff08\u4e0d\u61c2\u4f5c\u8005\u5728\u8bf4\u4ec0\u4e48\uff0c\u539f\u6587\uff1a\u3010 If you look at [1] you will see that our goals are more restricted subset of CBQ goals. So that if we can satisfy HTB goals than we also satisfy CBQ&#8217;s one. Thus HTB is kind of CBQ. \u3011\uff09<\/p>\n\n\n\n<p><strong>HTB\u67b6\u6784<\/strong><\/p>\n\n\n\n<p>\u8fd9\u91cc\u4f1a\u7ecf\u5e38\u5c06LINUX\u5b9e\u73b0\u7684\u51fd\u6570\u6216\u53d8\u91cf\u540d\u653e\u5230\u62ec\u53f7\u4e2d\uff0c\u8fd9\u65b9\u4fbf\u4f60\u9605\u8bfb\u6e90\u4ee3\u7801\u3002<\/p>\n\n\n\n<p style=\"text-align:left\">\u8fd9\u91cc\u6709HTB\u67b6\u6784\u7684\u7c7b\u6811\uff08struct htb_class\uff09\uff0c\u5728\u5168\u5c40\u4e5f\u88ab\u6210\u4e3aself feed\u5217\u8868\uff08htb_sched::row\uff09\u3002\u5728\u56fe\u7247\u7684\u6700\u53f3\u8fb9\u3002self feed\u662f\u7531self slots\u7ec4\u6210\u3002\u6bcf\u5c42\u6bcf\u4e2a\u4f18\u5148\u7ea7\u90fd\u6709\u4e00\u4e2aslot\u3002\u6240\u4ee5\u5728\u4f8b\u5b50\u4e2d\u67096\u4e2aself slots(\u73b0\u5728\u5ffd\u7565\u767d\u8272slot)\u3002\u6bcf\u4e2aself slot\u4fdd\u5b58\u7740\u4e00\u4e2a\u7c7b\u7684\u5217\u8868\u2014\u2014\u8fd9\u4e2a\u5217\u8868\u7531\u6709\u8272\u7684\u7ebf\u4eceslot\u8fde\u63a5\u5230\u7c7b\u3002\u5728slot\u4e2d\u7684\u6240\u6709\u7c7b\u6709\u76f8\u540c\u7684\u5c42\uff08level\uff09\u548c\u4f18\u5148\u7ea7\u3002self slot\u5305\u542b\u4e86\u6240\u6709\u7eff\u8272\u7684\u5217\u8868\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"288\" height=\"257\" src=\"https:\/\/www.5x44.cn\/wp-content\/uploads\/2019\/01\/feed1.gif\" alt=\"\" class=\"wp-image-2607\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"288\" height=\"255\" src=\"https:\/\/www.5x44.cn\/wp-content\/uploads\/2019\/01\/feed2.gif\" alt=\"\" class=\"wp-image-2608\"\/><\/figure>\n\n\n\n<p style=\"text-align:left\">\u6bcf\u4e00\u4e2a\u5185\u90e8\u7c7b\uff08\u4e0d\u542b\u53f6\u5b50\uff09\u90fd\u6709\u4e00\u4e2a\u5185\u90e8feed slots\uff08htb_class::inner.feed\uff09\u3002\u540c\u6837\u6bcf\u4e2a\u4f18\u5148\u7ea7\uff08\u7ea2\u9ad8\uff0c\u84dd\u4f4e\uff09\u548c\u6bcf\u4e2a\u5185\u90e8\u7c7b\u90fd\u6709\u4e00\u4e2a\u5185\u90e8feed slot\u3002\u4e0eself slots\u4e00\u6837\uff0c\u4e0eslot\u76f8\u540c\u4f18\u5148\u7ea7\u7684\u7c7b\u5217\u8868\u5fc5\u987b\u662fslot\u6240\u6709\u8005\u7684\u5b50\u96c6\u3002\u5185\u90e8slot\u4fdd\u5b58\u4e86 D(c)\u4e2d\u9ec4\u8272\u5b50\u7c7b\u7684\u5217\u8868\u3002<\/p>\n\n\n\n<p>\u5728self feed\u4e2d\u767d\u8272slot\u4e0d\u662f\u771f\u6b63\u5c5e\u4e8e\u90a3\u91cc\uff0c\u4f46\u662f\u51fa\u4e8e\u65b9\u4fbf\u624d\u628a\u5b83\u753b\u5728\u54ea\u91cc\u3002\u5b83\u662f\u6bcf\u5c42\u7684\u7b49\u5f85\u961f\u5217\uff08htb_sched::wait_pq, htb_class::pq_node\uff09\u3002\u5b83\u4fdd\u5b58\u8be5\u7ea7\u522b\u4e0a\u7684\u6240\u6709\u7c7b\u7684\u5217\u8868, \u8fd9\u4e9b\u7c7b\u8981\u4e48\u662f\u7ea2\u8272\u7684, \u4e5f\u53ef\u4ee5\u662f\u9ec4\u8272\u7684\u3002\u7c7bAR\u7531wall time\u6392\u5e8f\uff08htb_class::pq_key\uff09\u5728\u5176\u4e2d\u6539\u53d8\u989c\u8272\uff08htb_class::mode\uff09\u3002\u8fd9\u662f\u56e0\u4e3a\u989c\u8272\u7684\u6539\u53d8\u7684\u5f02\u6b65\u7684\u3002<\/p>\n\n\n\n<p>\u5b9e\u5728\u662f\u770b\u4e0d\u52a8\u4e86\uff0c\u597d\u96be~\u6709\u5174\u8da3\u7684\u4eba\u81ea\u5df1\u770b\u5427\uff01<\/p>\n\n\n\n<p>http:\/\/luxik.cdi.cz\/~devik\/qos\/htb\/manual\/theory.htm<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u539f\u6587\u5730\u5740\uff1ahttp:\/\/luxik.cdi.cz\/~devik\/qos\/htb\/manual\/theory.htm \u5b9a\u4e49 \u5148\u5b9a\u4e49\u4e00\u4e9b\u5168\u5c40\u540d\u8bcd\uff1a \u7c7b\u6709\u4e0e\u5176\u76f8\u5173\u7684\u62c5&#8230;<\/p>\n<p class=\"read-more\"><a class=\"btn btn-default\" href=\"https:\/\/www.5x44.cn\/?p=2200\"> Read More<span class=\"screen-reader-text\">  Read More<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8,25],"tags":[],"class_list":["post-2200","post","type-post","status-publish","format-standard","hentry","category-it","category-25"],"_links":{"self":[{"href":"https:\/\/www.5x44.cn\/index.php?rest_route=\/wp\/v2\/posts\/2200","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.5x44.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.5x44.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.5x44.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.5x44.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2200"}],"version-history":[{"count":14,"href":"https:\/\/www.5x44.cn\/index.php?rest_route=\/wp\/v2\/posts\/2200\/revisions"}],"predecessor-version":[{"id":2689,"href":"https:\/\/www.5x44.cn\/index.php?rest_route=\/wp\/v2\/posts\/2200\/revisions\/2689"}],"wp:attachment":[{"href":"https:\/\/www.5x44.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2200"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.5x44.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2200"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.5x44.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2200"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}