{"id":1128,"date":"2020-08-30T20:47:08","date_gmt":"2020-08-30T12:47:08","guid":{"rendered":"http:\/\/www.rain1024.com\/?p=1128"},"modified":"2023-08-07T20:57:24","modified_gmt":"2023-08-07T12:57:24","slug":"%e3%80%8aremus-high-availability-via-asychronous-virtual-machine-replication%e3%80%8b%e8%af%91%e6%96%87","status":"publish","type":"post","link":"http:\/\/rain1024.com\/index.php\/2020\/08\/30\/%e3%80%8aremus-high-availability-via-asychronous-virtual-machine-replication%e3%80%8b%e8%af%91%e6%96%87\/","title":{"rendered":"\u300aRemus: High Availability via Asychronous Virtual Machine Replication\u300b\u8bd1\u6587"},"content":{"rendered":"<p>\u901a\u8fc7\u5f02\u6b65\u865a\u62df\u673a\u590d\u5236\u5b9e\u73b0\u9ad8\u53ef\u7528\u6027<br \/>\n\u6d89\u53ca\u8d44\u6599<br \/>\n\u63a8\u6d4b\u6027\u6267\u884c\u7684\u6982\u5ff5\uff1ahttps:\/\/zhuanlan.zhihu.com\/p\/33145828<\/p>\n<p>Xen\u7684\u6982\u5ff5\uff1ahttps:\/\/baike.baidu.com\/item\/Xen<\/p>\n<p>\u7cfb\u7edf\u810f\u9875\u53ca\u9875\u7f13\u5b58\u7684\u6982\u5ff5https:\/\/juejin.im\/post\/5d59638c518825291e3dd77f<\/p>\n<p>Hypervisorhttps:\/\/zhuanlan.zhihu.com\/p\/34320333<\/p>\n<p>\u6458\u8981<br \/>\n\u8ba9\u5e94\u7528\u7a0b\u5e8f\u5728\u786c\u4ef6\u6545\u969c\u4e2d\u5e78\u5b58\u4e0b\u6765\u662f\u4e00\u9879\u4ee3\u4ef7\u5f88\u9ad8\u7684\u5de5\u4f5c\uff0c\u901a\u5e38\u6d89\u91cd\u65b0\u8bbe\u8ba1\u8f6f\u4ef6\u4ee5\u5305\u542b\u590d\u6742\u7684\u6062\u590d\u903b\u8f91\u4ee5\u53ca\u90e8\u7f72\u4e13\u7528\u786c\u4ef6\u3002\u8fd9\u5bf9\u63d0\u9ad8\u5927\u578b\u6216\u4f20\u7edf\u5e94\u7528\u7a0b\u5e8f\u7684\u53ef\u9760\u6027\u6784\u6210\u4e86\u4e25\u91cd\u7684\u969c\u788d\u3002\u6211\u4eec\u5c06\u63cf\u8ff0\u4e00\u79cd\u901a\u7528\u4e14\u900f\u660e\u7684\u9ad8\u53ef\u7528\u6027\u670d\u52a1\u7684\u67b6\u6784\uff0c\u8be5\u67b6\u6784\u53ef\u4ee5\u4fdd\u62a4\u73b0\u6709\u8f6f\u4ef6\uff0c\u5e76\u4e14\u4e0d\u9700\u8981\u4fee\u6539\uff0c\u9632\u6b62\u5176\u8fd0\u884c\u6240\u5728\u7684\u7269\u7406\u8ba1\u7b97\u673a\u53d1\u751f\u6545\u969c\u3002 Remus\u63d0\u4f9b\u4e86\u6781\u9ad8\u7684\u5bb9\u9519\u80fd\u529b\uff0c\u5f53\u51fa\u73b0\u6545\u969c\u65f6\uff0c\u8fd0\u884c\u4e2d\u7684\u7cfb\u7edf\u53ef\u4ee5\u65e0\u7f1d\u5207\u6362\u5230\u5907\u7528\u7269\u7406\u4e3b\u673a\u4e0a\u6267\u884c\uff0c\u800c\u505c\u673a\u65f6\u95f4\u53ea\u6709\u51e0\u79d2\u949f\uff0c\u540c\u65f6\u5b8c\u5168\u4fdd\u7559\u4e86\u7f51\u7edc\u8fde\u63a5\u7b49\u5176\u4ed6\u72b6\u6001\u8fde\u63a5\u3002\u6211\u4eec\u7684\u65b9\u6cd5\u5c06\u53d7\u4fdd\u62a4\u7684\u8f6f\u4ef6\u5c01\u88c5\u5728\u865a\u62df\u673a\u4e2d\uff0c\u4ee5\u6bcf\u79d2\u56db\u5341\u6b21\u7684\u9891\u7387\u5f02\u6b65\u5c06\u66f4\u6539\u7684\u72b6\u6001\u4f20\u64ad\u5230\u5907\u4efd\u4e3b\u673a\uff0c\u5e76\u4f7f\u7528\u63a8\u6d4b\u6027\u6267\u884c\uff0c\u4f7f\u6d3b\u52a8\u7684\u865a\u62df\u673a\u72b6\u6001\u7a0d\u5fae\u9886\u5148\u4e8e\u590d\u5236\u7684\u865a\u62df\u673a\u72b6\u6001\u3002<\/p>\n<p>1 Introduction \u4ecb\u7ecd<br \/>\n\u9ad8\u5ea6\u53ef\u7528\u7684\u7cfb\u7edf\u662f\u975e\u5e38\u5bbd\u6cdb\u7684\u6982\u5ff5\u3002 \u4f46\u662f\u5374\u5f88\u96be\u5b9e\u73b0\u53ef\u9760\u6027\uff0c\u5c24\u5176\u5728\u8d44\u6e90\u6709\u9650\u7684\u7cfb\u7edf\u4e2d\u3002 \u4e0d\u5e78\u7684\u662f\uff0c\u9ad8\u53ef\u7528\u6027\u5f88\u96be\u5b9e\u73b0\u2013\u5b83\u8981\u6c42\u7cfb\u7edf\u7531\u5197\u4f59\u7ec4\u4ef6\u6784\u6210\uff0c\u8fd9\u4e9b\u7ec4\u4ef6\u5fc5\u987b\u80fd\u591f\u5728\u53d1\u751f\u6545\u969c\u65f6\u8fdb\u884c\u7ef4\u62a4\u5e76\u5207\u6362\u5230\u5907\u4efd\u3002 \u65e8\u5728\u4fdd\u62a4\u73b0\u4ee3\u670d\u52a1\u5668\u7684\u5546\u4e1a\u9ad8\u53ef\u7528\u6027\u7cfb\u7edf\u901a\u5e38\u4f7f\u7528\u4e13\u7528\u786c\u4ef6\uff0c\u5b9a\u5236\u8f6f\u4ef6\u6216\u540c\u65f6\u4f7f\u7528\u4e24\u8005\uff08\u4f8b\u5982[12]\uff09\u3002 \u5728\u6bcf\u79cd\u60c5\u51b5\u4e0b\uff0c\u900f\u660e\u5730\u89e3\u51b3\u6545\u969c\u7684\u80fd\u529b\u65e2\u590d\u6742\u53c8\u6602\u8d35\uff0c\u8db3\u4ee5\u963b\u6b62\u5728\u666e\u901a\u670d\u52a1\u5668\u4e0a\u8fdb\u884c\u90e8\u7f72<\/p>\n<p>\u672c\u6587\u4ecb\u7ecd\u4e86Remus\uff0c\u5b83\u662f\u4e00\u79cd\u5728\u666e\u901a\u786c\u4ef6\u4e0a\u63d0\u4f9b\u4e0e\u64cd\u4f5c\u7cfb\u7edf\u548c\u5e94\u7528\u5e8f\u65e0\u5173\u7684\u9ad8\u53ef\u7528\u6027\u7684\u8f6f\u4ef6\u7cfb\u7edf\u3002\u6211\u4eec\u7684\u65b9\u6cd5\u5229\u7528\u865a\u62df\u5316\u529f\u80fd\uff0c\u5b9e\u73b0\u5728\u7269\u7406\u4e3b\u673a\u4e4b\u95f4\u70ed\u8fc1\u79fb\u6b63\u5728\u8fd0\u884c\u7684\u865a\u62df\u673a\uff0c\u5e76\u6269\u5c55\u4e86\u8be5\u6280\u672f\u4ee5\u975e\u5e38\u9ad8\u7684\u9891\u7387\uff08\u6bcf25ms\u95f4\u9694\u4e24\u6b21\uff09\u590d\u5236\u6574\u4e2a\u6b63\u5728\u8fd0\u884c\u7684\u865a\u62df\u673a\u5b9e\u4f8b\u7684\u5feb\u7167\u3002\u4f7f\u7528\u6b64\u6280\u672f\uff0c\u6211\u4eec\u7684\u7cfb\u7edf\u5c06\u865a\u62df\u673a\u7684\u6267\u884c\u79bb\u6563\u5316\u4e3a\u4e00\u7cfb\u5217\u7684\u5feb\u7167\u3002\u5728\u590d\u5236\u5b8c\u6210\u865a\u62df\u673a\u7cfb\u7edf\u72b6\u6001\u4e4b\u524d\uff0c\u4e0d\u4f1a\u91ca\u653e\u5916\u90e8\u8f93\u51fa\uff0c\u7279\u522b\u662f\u4f20\u8f93\u7684\u7f51\u7edc\u6570\u636e\u5305\u3002<\/p>\n<p>\u865a\u62df\u5316\u53ef\u4ee5\u521b\u5efa\u6b63\u5728\u8fd0\u884c\u7684\u8ba1\u7b97\u673a\u7684\u526f\u672c\uff0c\u4f46\u4e0d\u80fd\u4fdd\u8bc1\u8be5\u8fc7\u7a0b\u7684\u7387\u3002\u540c\u6b65\u5730\u4f20\u8f93\u6bcf\u4e00\u6b21\u72b6\u6001\u7684\u6539\u53d8\u662f\u4e0d\u73b0\u5b9e\u7684\uff0c\u56e0\u4e3a\u590d\u5236\u64cd\u4f5c\u4f1a\u5360\u7528\u7f51\u7edc\u8bbe\u5907\u5927\u91cf\u7684\u5e26\u5bbd\u3002\u4e0d\u5982\u8ba9\u4e00\u4e2a\u4e3b\u673a\u4ee5\u63a8\u6d4b\u65b9\u5f0f\u6267\u884c\uff0c\u7136\u540e\u8bbe\u7f6e\u68c0\u67e5\u70b9\u5e76\u5f02\u6b65\u590d\u5236\u5176\u72b6\u6001\u3002\u5728\u63d0\u4ea4\u68c0\u67e5\u70b9\u4e4b\u524d\uff0c\u7cfb\u7edf\u72b6\u6001\u4e0d\u4f1a\u5728\u5916\u90e8\u53ef\u89c1\uff0c\u6211\u4eec\u901a\u8fc7\u5728\u8fc7\u53bb\u6570\u5341\u6beb\u79d2\u5185\u6709\u6548\u5730\u8fd0\u884c\u7cfb\u7edf\u6765\u5b9e\u73b0\u9ad8\u901f\u590d\u5236\u6027\u80fd\u3002<\/p>\n<p>\u672c\u6587\u7684\u8d21\u732e\u662f\u5b9e\u7528\u7684\u3002\u6574\u4e2a\u7cfb\u7edf\u590d\u5236\u662f\u4e00\u79cd\u4f17\u6240\u5468\u77e5\u7684\u63d0\u4f9b\u9ad8\u53ef\u7528\u7684\u65b9\u6cd5\u3002\u4f46\u662f\uff0c\u901a\u5e38\u8ba4\u4e3a\u5b83\u6bd4\u4ec5\u590d\u5236\u76f8\u5173\u6570\u636e\u7684\u7279\u5b9a\u4e8e\u5e94\u7528\u7a0b\u5e8f\u7684\u68c0\u67e5\u70b9\u6280\u672f\u8981\u6602\u8d35\u5f97\u591a[15]\u3002\u6211\u4eec\u7684\u65b9\u6cd5\u53ef\u7528\u4e8e\u5c06HA\u4f5c\u4e3a\u865a\u62df\u673a\u7684\u5e73\u53f0\u670d\u52a1\u201c\u63a8\u5411\u5927\u4f17\u201d\u3002\u5c3d\u7ba1\u5b83\u5728\u64cd\u4f5c\u4e0a\u53d7\u5230\u786c\u4ef6\u548c\u8f6f\u4ef6\u7684\u9650\u5236\uff0c\u4f46\u8be5\u7cfb\u7edf\u53ef\u4ee5\u63d0\u4f9b\u548c\u5546\u7528\u89e3\u51b3\u65b9\u6848\u540c\u6837\u751a\u81f3\u66f4\u597d\u7684\u4fdd\u62a4\u3002\u8bb8\u591a\u73b0\u6709\u7cfb\u7edf\u4ec5\u5bf9\u6301\u4e45\u6027\u5b58\u50a8\u505a\u955c\u50cf\uff0c\u8981\u6c42\u5e94\u7528\u7a0b\u5e8f\u4ece\u5d29\u6e83\u4e00\u81f4\u7684\u6301\u4e45\u72b6\u6001\u4e2d\u6267\u884c\u6062\u590d\u3002\u76f8\u6bd4\u4e4b\u4e0b\uff0cRemus\u786e\u4fdd\u65e0\u8bba\u4e3b\u8282\u70b9\u4f55\u65f6\u53d1\u751f\u6545\u969c\uff0c\u90fd\u4e0d\u4f1a\u4e22\u5931\u4efb\u4f55\u5916\u90e8\u53ef\u89c1\u72b6\u6001\u3002<\/p>\n<p>1.1 Goals \u76ee\u6807<br \/>\nRemus\u65e8\u5728\u4f7f\u4e2d\u4f4e\u7aef\u7cfb\u7edf\u83b7\u5f97\u9ad8\u53ef\u7528\u6027\u3002\u901a\u8fc7\u7b80\u5316\u8bbe\u7f6e\u5e76\u5141\u8bb8\u5c06\u591a\u670d\u52a1\u5668\u6574\u5408\u5230\u8f83\u5c11\u7684\u7269\u7406\u4e3b\u673a\u4e0a\uff0c\u865a\u62df\u5316\u4f7f\u8fd9\u4e9b\u7cfb\u7edf\u66f4\u53d7\u6b22\u8fce\u3002\u4f46\u662f\uff0c\u5408\u5e76\u5e26\u6765\u597d\u5904\u7684\u540c\u65f6\u589e\u52a0\u4e86\u51fa\u73b0\u786c\u4ef6\u6545\u969c\u7684\u53ef\u80fd\u6027\u3002 Remus\u901a\u8fc7\u5c06\u9ad8\u53ef\u7528\u6027\u4f5c\u4e3a\u865a\u62df\u5316\u5e73\u53f0\u672c\u8eab\u63d0\u4f9b\u7684\u670d\u52a1\u8fdb\u884c\u5546\u54c1\u5316\u6765\u89e3\u51b3\uff0c\u4e3a\u865a\u62df\u673a\u7684\u7ba1\u7406\u5458\u63d0\u4f9b\u4e86\u68c0\u6d4b\u98ce\u9669\u7684\u5de5\u5177\u3002<\/p>\n<p>Remus\u7684\u8bbe\u8ba1\u57fa\u4e8e\u4ee5\u4e0b\u603b\u4f53\u76ee\u6807\uff1a<\/p>\n<p>Generality \u901a\u7528\u6027 \u5b9a\u5236\u4e00\u4e2a\u5e94\u7528\u7a0b\u5e8f\u4ee5\u652f\u6301\u9ad8\u53ef\u7528\u6027\u53ef\u80fd\u4f1a\u975e\u5e38\u8d35\uff0c\u66f4\u4e0d\u7528\u8bf4\u7ec4\u7ec7\u53ef\u80fd\u4f9d\u8d56\u7684\u5404\u79cd\u8f6f\u4ef6\u3002\u4e3a\u4e86\u89e3\u51b3\u6b64\u95ee\u9898\uff0c\u5e94\u5c06\u9ad8\u53ef\u7528\u6027\u4f5c\u4e3a\u5e95\u5c42\u670d\u52a1\u63d0\u4f9b\uff0c\u5e76\u4ee5\u901a\u7528\u7684\u673a\u5236\u51fa\u73b0\uff0c\u800c\u4e0d\u5173\u6ce8\u53d7\u4fdd\u62a4\u7684\u5e94\u7528\u7a0b\u5e8f\u6216\u8fd0\u884c\u8be5\u5e94\u7528\u7a0b\u5e8f\u7684\u786c\u4ef6\u5982\u4f55\u3002<\/p>\n<p>Transparency \u900f\u660e\u5ea6 \u5728\u8bb8\u591a\u73af\u5883\u4e2d\uff0c\u53ef\u80fd\u65e0\u6cd5\u4fee\u6539\u64cd\u4f5c\u7cfb\u7edf\u548c\u5e94\u7a0b\u5e8f\u3002\u4e3a\u4e86\u5c3d\u53ef\u80fd\u652f\u6301\u5e7f\u6cdb\u7684\u5e94\u7528\u7a0b\u5e8f\uff0c\u9ad8\u53ef\u7528\u6027\u4e0d\u5e94\u8981\u6c42\u4fee\u6539OS\u6216\u5e94\u7528\u7a0b\u5e8f\u4ee3\u7801\u4ee5\u652f\u6301\u8bf8\u5982\u6545\u969c\u68c0\u6d4b\u6216\u72b6\u6001\u6062\u590d\u4e4b\u7c7b\u7684\u529f\u80fd\u3002<\/p>\n<p>Seamless failure recovery \u65e0\u7f1d\u6545\u969c\u6062\u590d \u5728\u5355\u4e3b\u673a\u6545\u969c\u7684\u60c5\u51b5\u4e0b\u4efb\u4f55\u5916\u90e8\u53ef\u89c1\u72b6\u6001\u90fd\u4e0d\u5e94\u4e22\u5931\u3002\u6b64\u5916\uff0c\u6545\u969c\u6062\u590d\u5e94\u8be5\u8db3\u591f\u5feb\u5730\u8fdb\u884c\uff0c\u4ece\u5916\u90e8\u7528\u6237\u7684\u89d2\u5ea6\u6765\u770b\u53ea\u662f\u6682\u65f6\u7684\u6570\u636e\u5305\u4e22\u5931\u3002\u5df2\u5efa\u7acb\u7684TCP\u8fde\u63a5\u4e0d\u5e94\u4e22\u5931\u6216\u91cd\u7f6e\u3002<\/p>\n<p>\u8fd9\u4e9b\u662f\u5d07\u9ad8\u96be\u4ee5\u5b9e\u73b0\u7684\u76ee\u6807\uff0c\u9700\u8981\u63d0\u4f9b\u8fdc\u8fdc\u8d85\u51fa\u666e\u901aHA\u7cfb\u7edf\u6240\u63d0\u4f9b\u4fdd\u62a4\u6c34\u5e73\uff0c\u666e\u901aHA\u7cfb\u7edf\u57fa\u4e8e\u5f02\u6b65\u5b58\u50a8\u955c\u50cf\uff0c\u968f\u540e\u662f\u7279\u5b9a\u4e8e\u67d0\u4e9b\u5e94\u7528\u7a0b\u5e8f\u7684\u6062\u590d\u4ee3\u7801\u3002\u6b64\u5916\uff0c\u60f3\u8981\u5728\u4e0d\u4fee\u6539\u865a\u62df\u673a\u5185\u4ee3\u7801\u7684\u60c5\u51b5\u4e0b\u5b9e\u73b0\u8fd9\u79cd\u53ef\u7528\u6027\u7ea7\u522b\uff0c\u9700\u8981\u91c7\u7528\u975e\u5e38\u7c97\u7c92\u5ea6\u7684\u65b9\u6cd5\u6765\u89e3\u51b3\u6b64\u95ee\u9898\u3002\u8be5\u7cfb\u7edf\u7684\u6700\u7ec8\u6700\u7ec8\u76ee\u6807\u662f\u5b9e\u73b0\u8fd9\u4e9b\u76ee\u6807\uff0c\u540c\u65f6\u63d0\u4f9b\u53ef\u90e8\u7f72\u7684\u6027\u80fd\u6c34\u5e73\uff0c\u5373\u4f7f\u9762\u5bf9\u5f53\u4eca\u670d\u52a1\u5668\u786c\u4ef6\u4e0a\u5e38\u89c1\u7684SMP\u786c\u4ef6\u4e5f\u662f\u5982\u6b64\u3002<\/p>\n<p>1.2 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\/>\nRemus\u63d0\u4f9b\u4ee5\u4e0b\u7279\u6027\uff1a<\/p>\n<ol>\n<li>\u4efb\u4f55\u5355\u4e2a\u4e3b\u673a\u7684\u6545\u969c\u90fd\u662f\u53ef\u4ee5\u5bb9\u5fcd\u7684\u3002<\/p>\n<\/li>\n<li>\n<p>\u5982\u679c\u4e3b\u8981\u4e3b\u673a\u548c\u5907\u7528\u4e3b\u673a\u540c\u65f6\u53d1\u751f\u6545\u969c\uff0c\u5219\u53d7\u4fdd\u62a4\u7cfb\u7edf\u7684\u6570\u636e\u5c06\u5904\u4e8e\u5d29\u6e83\u4e00\u81f4\u72b6\u6001\u3002<\/p>\n<\/li>\n<li>\n<p>\u5728\u7cfb\u7edf\u72b6\u6001\u5df2\u63d0\u4ea4\u7ed9\u526f\u672c\u4e4b\u524d\uff0c\u4e0d\u4f1a\u6709\u5916\u90e8\u53ef\u89c1\u7684\u8f93\u51fa<\/p>\n<\/li>\n<\/ol>\n<p>\u6211\u4eec\u7684\u76ee\u6807\u662f\u4e3a\u5355\u4e2a\u7269\u7406\u4e3b\u673a\u7684\u6545\u969c\u505c\u6b62\uff0c\u63d0\u4f9b\u5b8c\u5168\u900f\u660e\u7684\u6062\u590d\u3002\u8be5\u7cfb\u7edf\u7684\u5f15\u4eba\u6ce8\u76ee\u7684\u65b9\u9762\u662f\u53ef\u4ee5\u8f7b\u677e\u5730\u5c06\u9ad8\u53ef\u7528\u6027\u6539\u88c5\u5230\u5728\u5546\u7528\u786c\u4ef6\u4e0a\u8fd0\u884c\u7684\u73b0\u6709\u8f6f\u4ef6\u4e0a\u3002\u5b83\u4f7f\u7528\u4e00\u5bf9\u5546\u7528\u4e3b\u673a\u901a\u8fc7\u5197\u4f59\u5343\u5146\u4f4d\u4ee5\u592a\u7f51\u8fde\u63a5\uff0c\u5e76\u4e14\u53ef\u4ee5\u4ece\u4efb\u4f55\u7ec4\u4ef6\u7684\u6545\u969c\u4e2d\u6062\u590d\u3002\u901a\u8fc7\u7ed3\u5408\u5757\u8bbe\u5907\u7684\u72b6\u6001\u590d\u5236\u534f\u8bae\uff0c\u5b83\u907f\u514d\u4e86\u9700\u8981\u6602\u8d35\uff0c\u5171\u4eab\u7684\u7f51\u7edc\u9644\u52a0\u5b58\u50a8\u6765\u5b58\u50a8\u78c1\u76d8\u6620\u50cf\u3002<\/p>\n<p>\u6211\u4eec\u7684\u76ee\u6807\u4e0d\u662f\u4ece\u8f6f\u4ef6\u9519\u8bef\u6216\u4e0d\u95f4\u65ad\u6545\u969c\u4e2d\u6062\u590d\u3002\u6b63\u5982\u5728[5]\u4e2d\u89c2\u5bdf\u5230\u7684\u90a3\u6837\uff0cremus\u53ef\u4ee5\u63d0\u4f9b\u5b8c\u6574\u7684\u7cfb\u7edf\u72b6\u6001\u6355\u83b7\u548c\u590d\u5236\uff0c\u56e0\u6b64\u4f1a\u5c06\u5e94\u7528\u7a0b\u5e8f\u9519\u8bef\u4f20\u64ad\u5230\u5907\u4efd\u4e2d\u3002\u8fd9\u662f\u63d0\u4f9b\u900f\u660e\u5ea6\u548c\u901a\u7528\u6027\u7684\u5fc5\u8981\u7ed3\u679c\u3002<\/p>\n<p>\u6211\u4eec\u7684\u6545\u969c\u6a21\u578b\u4e0e\u5546\u7528HA\u4ea7\u54c1\u76f8\u540c\uff0c\u5b83\u4eec\u4e3a\u5f53\u4eca\u7684\u865a\u62df\u673a\u5668\u63d0\u4f9b\u4e86\u4fdd\u62a4[31\uff0c30]\u3002\u4f46\u662f\uff0c\u8fd9\u4e9b\u4ea7\u54c1\u63d0\u4f9b\u7684\u4fdd\u62a4\u7a0b\u5ea6\u8fdc\u5c0f\u4e8eRemus\u63d0\u4f9b\u7684\u4fdd\u62a4\u7a0b\u5ea6\uff1a\u73b0\u6709\u7684\u5546\u4e1a\u4ea7\u54c1\u901a\u8fc7\u7b80\u5355\u5730\u4ece\u5d29\u6e83\u4e00\u81f4\u7684\u78c1\u76d8\u72b6\u6001\u91cd\u65b0\u542f\u52a8\u53e6\u4e00\u53f0\u4e3b\u673a\u4e0a\u7684\u865a\u62df\u673a\uff0c\u4ece\u800c\u5bf9\u7269\u7406\u4e3b\u673a\u7684\u6545\u969c\u505a\u51fa\u4e86\u54cd\u5e94\u3002\u6211\u4eec\u7684\u65b9\u6cd5\u53ef\u4ee5\u5728\u4e0e\u5b9e\u65f6\u8fc1\u79fb\u7c7b\u4f3c\u7684\u65f6\u95f4\u8303\u56f4\u5185\u907f\u514d\u6545\u969c\uff0c\u5e76\u4f7f\u865a\u62df\u673a\u8fd0\u884c\u5e76\u4fdd\u6301\u7f51\u7edc\u8fde\u63a5\u5b8c\u6574\u3002\u4e0d\u4f1a\u4e22\u5931\u5916\u90e8\u66b4\u9732\u72b6\u6001\uff0c\u4e5f\u4e0d\u4f1a\u635f\u574f\u78c1\u76d8\u3002<\/p>\n<p>2.2 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Remus\u901a\u8fc7\u6d41\u6c34\u5316\u68c0\u67e5\u70b9\u64cd\u4f5c\u6765\u89e3\u51b3\u6b64\u95ee\u9898\u3002\u6211\u4eec\u4f7f\u7528epoch-based\u7684\u7cfb\u7edf\uff0c\u5728\u8be5\u7cfb\u7edf\u4e2d\uff0c\u6d3b\u52a8\u7684\u865a\u62df\u673a\u53d7\u5230\u77ed\u6682\u7684\u6682\u505c\uff0c\u5728\u6267\u884c\u8fc7\u7a0b\u4e2d\u81ea\u52a8\u6355\u83b7\u66f4\u6539\u7684\u72b6\u6001\uff0c\u5e76\u4e14\u5728\u72b6\u6001\u5df2\u4f20\u64ad\u5230\u5907\u4efd\u65f6\u91ca\u653e\u5916\u90e8\u8f93\u51fa\u3002\u518d\u6b21\u53c2\u8003\u56fe1\uff0c\u8be5\u8fc7\u7a0b\u53ef\u4ee5\u5206\u4e3a\u56db\u4e2a\u9636\u6bb5\uff1a<\/p>\n<p>\u6bcf\u4e2a\u65f6\u671f\u6682\u505c\u4e00\u6b21\u6b63\u5728\u8fd0\u884c\u7684\u865a\u62df\u673a\uff0c\u5e76\u5c06\u4efb\u4f55\u5df2\u66f4\u6539\u7684\u72b6\u6001\u590d\u5236\u5230\u7f13\u51b2\u533a\u4e2d\u3002\u8fd9\u4e2a\u8fc7\u7a0b\u5b9e\u9645\u4e0a\u662f\u5b9e\u65f6\u8fc1\u79fb\u7684\u201cstop-and-copy\u201d\u9636\u6bb5\uff0c\u4f46\u662f\u6b63\u5982\u672c\u8282\u7a0d\u540e\u6240\u8ff0\uff0c\u5b83\u5df2\u7ecf\u9488\u5bf9\u9ad8\u9891\u68c0\u67e5\u70b9\u8fdb\u884c\u4e86\u4f18\u5316\u3002\u5c06\u72b6\u6001\u66f4\u6539\u4fdd\u7559\u5728\u7f13\u51b2\u533a\u4e2d\u540e\uff0c\u865a\u62df\u673a\u4fbf\u4f1a\u7ee7\u7eed\u6267\u884c\u3002<br \/>\n\u7f13\u51b2\u72b6\u6001\u88ab\u4f20\u8f93\u5e76\u5b58\u50a8\u5728\u5907\u4efd\u4e3b\u673a\u7684\u5185\u5b58\u4e2d\u3002<br \/>\n\u5907\u4efd\u4e3b\u673a\u6536\u5230\u5b8c\u6574\u7684\u72b6\u6001\uff0c\u68c0\u67e5\u70b9\u5c31\u4f1a\u88ab\u544a\u77e5\u4e3b\u6570\u636e\u5e93\u3002<br \/>\n\u91ca\u653e\u7f13\u51b2\u7684\u7f51\u7edc\u8f93\u51fa\u3002<br \/>\n\u8fd9\u79cd\u65b9\u6cd5\u7684\u7ed3\u679c\u662f\u5728\u68c0\u67e5\u70b9\u8fb9\u754c\u7684\u6267\u884c\u6709\u6548\u5730\u79bb\u6563\u5316\u4e86\u3002\u5907\u4efd\u89e6\u53d1\u5bf9\u5b8c\u6210\u7684\u68c0\u67e5\u70b9\u7684\u786e\u8ba4\uff0c\u5c06\u91ca\u653e\u5df2\u7f13\u51b2\u7684\u7f51\u7edc\u8f93\u51fa\uff0c\u662f\u4ec0\u4e48\u5462\uff1f\u5e76\u8868\u793a\u8fdb\u5165\u65b0\u7684\u8fc7\u6e21\u8fc7\u7a0b\u3002<\/p>\n<p>2.3 Memory and CPU<br \/>\n\u5728Xen\u73b0\u6709\u7684\u673a\u5668\u4e0a\u5b9e\u73b0\u4e86\u68c0\u67e5\u70b9\uff0c\u4ee5\u8fdb\u884c\u5b9e\u65f6\u8fc1\u79fb[6]\u3002\u5b9e\u65f6\u8fc1\u79fb\u662f\u4e00\u79cd\u6280\u672f\uff0c\u901a\u8fc7\u8be5\u6280\u672f\u53ef\u4ee5\u5c06\u865a\u62df\u673a\u91cd\u65b0\u5b9a\u4f4d\u5230\u53e6\u4e00\u53f0\u7269\u7406\u4e3b\u673a\uff0c\u800c\u53ea\u9700\u8981\u77ed\u6682\u7684\u4e2d\u65ad\u670d\u52a1\u5373\u53ef\u3002\u4e3a\u6b64\uff0c\u5c06\u5185\u5b58\u590d\u5236\u5230\u5907\u4efd\u4e3b\u673a\uff0c\u540c\u65f6\u865a\u62df\u673a\u7ee7\u7eed\u5728\u65e7\u4e3b\u673a\u8fd0\u884c\u3002\u5728\u5b9e\u65f6\u8fc1\u79fb\u8fc7\u7a0b\u4e2d\uff0c\u5c06\u62e6\u622a\u5bf9\u5185\u5b58\u7684\u5199\u5165\uff0c\u5e76\u4e14\u5c06\u810f\u9875\u6574\u987f\u590d\u5236\u5230\u5907\u4efd\u4e3b\u673a\u3002\u5728\u6307\u5b9a\u7684\u65f6\u95f4\u95f4\u9694\u540e\uff0c\u6216\u8005\u7531\u4e8e\u865a\u62df\u673a\u5199\u5165\u5185\u5b58\u7684\u901f\u5ea6\u81f3\u5c11\u8fbe\u5230\u8fc1\u79fb\u8fc7\u7a0b\u4e2d\u590d\u5236\u7684\u901f\u5ea6\u800c\u672a\u8fdb\u884c\u4efb\u4f55\u5411\u524d\u5904\u7406\u65f6\uff0c\u865a\u62df\u673a\u5c06\u88ab\u6302\u8d77\uff0c\u5269\u4f59\u7684\u810f\u5185\u5b58\u5c06\u88ab\u590d\u5236\u51fa\u53bb\u4ee5\u53ca\u5f53\u524d\u7684CPU\u72b6\u6001\u3002\u6b64\u65f6\uff0c\u5907\u4efd\u4e3b\u673a\u4e0a\u7684\u955c\u50cf\u88ab\u6fc0\u6d3b\u3002\u603b\u505c\u673a\u65f6\u95f4\u53d6\u51b3\u4e8e\u865a\u62df\u673a\u6302\u8d77\u65f6\u8981\u590d\u5236\u7684\u5269\u4f59\u5185\u5b58\u91cf\uff0c\u4f46\u901a\u5e38\u4e0d\u8d85\u8fc7100\u6beb\u79d2\u3002\u603b\u8fc1\u79fb\u65f6\u95f4\u662f\u5ba2\u6237\u673a\u4f7f\u7528\u7684\u5185\u5b58\u91cf\u53ca\u5176\u53ef\u5199\u5de5\u4f5c\u96c6\u6709\u5173\u3002<\/p>\n<p>Xen\u63d0\u4f9b\u4e86\u4f7f\u7528\u79f0\u4e3a\u5f71\u5b50\u9875\u8868\uff08shadow page table\uff09\u7684\u6280\u672f\u6765\u8ddf\u8e2a\u865a\u62df\u673a\u5bf9\u5185\u5b58\u7684\u5199\u5165\u7684\u60c5\u51b5\u3002\u542f\u7528\u6b64\u64cd\u4f5c\u6a21\u5f0f\u540e\uff0cVMM\u4f1a\u7ef4\u62a4\u865a\u62df\u673a\u9875\u8868\u7684\u79c1\u6709\uff08\u201c\u5f71\u5b50\u201d\uff09\u7248\u672c\uff0c\u5e76\u5c06\u5176\u516c\u5f00\u7ed9\u786c\u4ef6MMU\u3002\u9875\u9762\u4fdd\u62a4\u7528\u4e8e\u6355\u83b7\u865a\u62df\u673a\u5bf9\u5176\u9875\u9762\u8868\u5185\u90e8\u7248\u672c\u7684\u8bbf\u95ee\uff0c\u4ece\u800c\u5141\u8bb8\u865a\u62df\u673a\u7ba1\u7406\u7a0b\u5e8f\u8ddf\u8e2a\u66f4\u65b0\uff0c\u5e76\u5728\u9002\u5f53\u65f6\u4f20\u64ad\u5230\u5f71\u5b50\u7248\u672c<\/p>\n<p>\u5bf9\u4e8e\u5b9e\u65f6\u8fc1\u79fb\uff0c\u6b64\u6280\u672f\u5df2\u6269\u5c55\u4e3a\u900f\u660e\u5730\uff08\u5bf9\u865a\u62df\u673a\u800c\u8a00\uff09\u5c06\u6240\u6709\u865a\u62df\u673a\u5185\u5b58\u6807\u8bb0\u4e3a\u53ea\u8bfb\u3002\u7136\u540e\uff0c\u7ba1\u7406\u7a0b\u5e8f\u53ef\u4ee5\u6355\u83b7\u865a\u62df\u673a\u5bf9\u5185\u5b58\u7684\u6240\u6709\u5199\u64cd\u4f5c\uff0c\u5e76\u7ef4\u62a4\u81ea\u4e0a\u4e00\u8f6e\u4ee5\u6765\u5df2\u88ab\u5f04\u810f\u7684\u9875\u9762\u6620\u5c04\u3002\u6bcf\u4e00\u8f6e\u8fc1\u79fb\u8fc7\u7a0b\u90fd\u4f1a\u81ea\u52a8\u8bfb\u53d6\u5e76\u91cd\u7f6e\u6b64\u6620\u5c04\uff0c\u800c\u8fed\u4ee3\u8fc1\u79fb\u8fc7\u7a0b\u5c06\u9010\u4e2a\u8ffd\u8e2a\u810f\u9875\u9762\uff0c\u76f4\u5230\u4e0d\u518d\u4ea7\u751f\u4e3a\u6b62\u3002\u5982\u4e0a\u6240\u8ff0\uff0c\u5b9e\u65f6\u8fc1\u79fb\u8fc7\u7a0b\u6700\u7ec8\u4f1a\u6682\u505c\u865a\u62df\u673a\u7684\u6267\u884c\uff0c\u5e76\u8fdb\u5165\u6700\u540e\u7684\"stop-and-copy\"\u9636\u6bb5\uff0c\u5728\u6b64\u56de\u4f20\u6240\u6709\u5269\u4f59\u7684\u9875\u9762\uff0c\u5e76\u5728\u76ee\u6807\u4e3b\u673a\u4e0a\u6062\u590d\u6267\u884c\u3002<\/p>\n<p>Remus\u5c06\u5b9e\u73b0\u68c0\u67e5\u70b9\u4f5c\u4e3a\u5b9e\u65f6\u8fc1\u79fb\u7684\u6700\u540e\u9636\u6bb5\u6765\u91cd\u590d\u6267\u884c\uff1a\u6bcf\u4e2a\u65f6\u671f\uff0c\u865a\u62df\u673a\u90fd\u5c06\u6682\u505c\uff0c\u800c\u66f4\u6539\u7684\u5185\u5b58\u548cCPU\u72b6\u6001\u5c06\u88ab\u590d\u5236\u5230\u7f13\u51b2\u533a\u3002\u7136\u540e\uff0c\u865a\u62df\u673a\u5728\u5f53\u524d\u4e3b\u673a\u4e0a\u6062\u590d\u6267\u884c\u800c\u4e0d\u662f\u5728\u76ee\u6807\u4e3b\u673a\u3002\u786e\u4fdd\u59cb\u7ec8\u5728\u8fdc\u7a0b\u4f4d\u7f6e\u63d0\u4f9b\u4e00\u81f4\u7684\u6620\u50cf\uff0c\u9700\u8981\u5bf9\u8fc1\u79fb\u8fc7\u7a0b\u8fdb\u884c\u4e00\u4e9b\u4fee\u6539\uff0c\u5e76\u63d0\u4f9b\u8db3\u591f\u7684\u6027\u80fd\u3002\u8fd9\u4e9b\u5728\u4e0b\u9762\u63cf\u8ff0\u3002<\/p>\n<p>\u8fc1\u79fb\u589e\u5f3a<\/p>\n<pre><code>  \u5728\u5b9e\u65f6\u8fc1\u79fb\u4e2d\uff0c\u865a\u62df\u673a\u5185\u5b58\u4f1a\u8fed\u4ee3\u590d\u5236\u597d\u51e0\u56de\uff0c\u5e76\u4e14\u53ef\u80fd\u4f1a\u6d88\u8017\u51e0\u5206\u949f\u7684\u6267\u884c\u65f6\u95f4\u3002 \u800c\u7531stop-and-copy\u9020\u6210\u7684\u670d\u52a1\u4e2d\u65ad\u9020\u6210\u7684\u635f\u8017\u5219\u4e0d\u662f\u5f88\u5927\u3002 \u4f46\u5728\u6355\u83b7\u9891\u7e41\u7684\u865a\u62df\u673a\u68c0\u67e5\u70b9\u65f6\u4e0d\u662f\u8fd9\u79cd\u60c5\u51b5\uff1a\u6bcf\u4e2a\u68c0\u67e5\u70b9\u53ea\u662f\u8fc1\u79fb\u7684\u6700\u540e\u8fdb\u5165stop-and-copy\u9636\u6bb5\uff0c\u56e0\u6b64\u8fd9\u4ee3\u8868\u4e86\u51cf\u5c11\u68c0\u67e5\u70b9\u5f00\u9500\u7684\u4f18\u5316\u7684\u5173\u952e\u70b9\u3002 \u5bf9Xen\u68c0\u67e5\u70b9\u4ee3\u7801\u7684\u68c0\u67e5\u663e\u793a\uff0c\u865a\u62df\u673a\u5904\u4e8e\u6302\u8d77\u72b6\u6001\u65f6\u6240\u82b1\u8d39\u7684\u5927\u90e8\u5206\u65f6\u95f4\u90fd\u6d6a\u8d39\u5728\u4e86\u8c03\u5ea6\u4e0a\uff0c\u8fd9\u4e3b\u8981\u662f\u8be5\u5b88\u62a4\u7a0b\u5e8f\uff0c\u5728\u865a\u62df\u673a\u548cdomain 0 \u4e4b\u95f4\u63d0\u4f9b\u7ba1\u7406\u901a\u4fe1\u7684xenstore\u5b88\u62a4\u7a0b\u5e8f\u7684\u5b9e\u73b0\u6548\u7387\u4f4e\u4e0b\u3002\n<\/code><\/pre>\n<p>Remus\u901a\u8fc7\u4e24\u79cd\u65b9\u5f0f\u4f18\u5316\u68c0\u67e5\u70b9\uff1a<\/p>\n<p>\u9996\u5148\uff0c\u5b83\u51cf\u5c11\u4e86\u6302\u8d77\u548c\u6062\u590d\u865a\u62df\u673a\u6240\u9700\u7684\u8fdb\u7a0b\u95f4\u8bf7\u6c42\u7684\u6570\u91cf\u3002<\/p>\n<p>\u5176\u6b21\uff0c\u5b83\u5c06xenstore\u5b8c\u5168\u4ece\u6302\u8d77\/\u6062\u590d\u8fc7\u7a0b\u4e2d\u5220\u9664\u3002<\/p>\n<p>\u5728\u539f\u59cb\u4ee3\u7801\u4e2d\uff0c\u5f53\u8fc1\u79fb\u8fc7\u7a0b\u5e0c\u671b\u6302\u8d77\u865a\u62df\u673a\u65f6\uff0c\u5b83\u5411\u865a\u62df\u673a\u7ba1\u7406\u5b88\u62a4\u7a0b\u5e8fxend\u53d1\u9001\u4e86\u4e00\u6761\u6d88\u606f\u3002 Xend\u4f9d\u6b21\u5411xenstore\u5199\u4e86\u4e00\u6761\u6d88\u606f\uff0c\u8be5\u6d88\u606f\u901a\u8fc7\u4e8b\u4ef6\u901a\u9053\uff08\u865a\u62df\u4e2d\u65ad\uff09\u8b66\u544a\u865a\u62df\u673a\u5e94\u6682\u505c\u6267\u884c\u3002\u865a\u62df\u673a\u5728\u6302\u8d77\u4e4b\u524d\u7684\u6700\u540e\u4e00\u4e2a\u52a8\u4f5c\u662f\u8fdb\u884chyper call\uff0chypercall\u5bf9\u57df\u8fdb\u884c\u4e86\u8c03\u5ea6\uff0c\u5e76\u5bfc\u81f4Xen\u5411xenstore\u53d1\u9001\u901a\u77e5\uff0c\u7136\u540exenstore\u53d1\u9001\u4e86\u4e00\u4e2a\u4e2d\u65ad\u5230xend\uff0c\u6700\u7ec8\u5c06\u63a7\u5236\u6743\u8fd4\u56de\u7ed9\u8fc1\u79fb\u8fc7\u7a0b\u3002\u8fd9\u4e2a\u590d\u6742\u7684\u8fc7\u7a0b\u8981\u82b1\u8d39\u7684\u65f6\u95f4\u65e0\u6cd5\u786e\u5b9a-\u5178\u578b\u7684\u6d4b\u91cf\u5ef6\u8fdf\u4e3a30\u523040\u6beb\u79d2\uff0c\u4f46\u662f\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\uff0c\u6211\u4eec\u770b\u5230\u7684\u5ef6\u8fdf\u957f\u8fbe500\u6beb\u79d2\u3002<\/p>\n<pre><code>   Remus\u4f18\u5316\u7684\u65b9\u6848\u901a\u8fc7\u5728\u865a\u62df\u673a\u4e2d\u521b\u5efa\u4e00\u4e2a\u4e13\u95e8\u7528\u4e8e\u63a5\u6536\u6682\u505c\u8bf7\u6c42\u7684\u4e8b\u4ef6\u901a\u9053\u6765\u7b80\u5316\u6b64\u8fc7\u7a0b\uff0c\u8fc1\u79fb\u8fc7\u7a0b\u53ef\u4ee5\u76f4\u63a5\u8c03\u7528\u8be5\u901a\u9053\u3002\u6b64\u5916\uff0c\u63d0\u4f9b\u4e86\u65b0\u7684hypercall\uff0c\u4ee5\u5141\u8bb8\u8fdb\u7a0b\u6ce8\u518c\u4e8b\u4ef6\u901a\u9053\u4ee5\u8fdb\u884c\u56de\u8c03\uff0c\u4ee5\u901a\u77e5\u5176\u865a\u62df\u673a\u6302\u8d77\u5b8c\u6210\u3002\u603b\u4e4b\uff0c\u8fd9\u4e24\u4e2a\u901a\u77e5\u673a\u5236\u4f7f\u5c06\u865a\u62df\u673a\u6302\u8d77\u6240\u9700\u7684\u65f6\u95f4\u51cf\u5c11\u5230\u5927\u7ea6100\u5fae\u79d2-\u4e0e\u4ee5\u524d\u7684\u5b9e\u73b0\u76f8\u6bd4\u63d0\u9ad8\u4e86\u4e24\u4e2a\u6216\u591a\u4e2a\u6570\u91cf\u7ea7\u3002\n\n   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MB\u7684RAM\uff0c\u5176\u4e2d1024\u5206\u914d\u7ed9\u4e86Web\u670d\u52a1\u5668\u865a\u62df\u673a\uff08\u5373\u6b63\u5728\u6d4b\u8bd5\u7684\u7cfb\u7edf\uff09\u3002\u6211\u4eec\u5728\u672c\u8282\u4e2d\u63d0\u5230\u7684SPECweb\u5206\u6570\u662f\u4f7f\u7528SPECweb\u201c\u7535\u5b50\u5546\u52a1\u201d\u6d4b\u8bd5\u6240\u53d6\u5f97\u7684\u6700\u9ad8\u6210\u7ee9\uff0c\u4fdd\u6301\u4e8695\uff05\u7684\u201c\u826f\u597d\u201d\u548c99\uff05\u7684\u201c\u53ef\u63a5\u53d7\u201d\u65f6\u95f4<\/p>\n<p>\u56fe7\u663e\u793a\u4e86\u76f8\u5bf9\u4e8e\u4e0d\u53d7\u4fdd\u62a4\u7684\u670d\u52a1\u5668\uff0cSPECweb\u5728\u5404\u79cd\u68c0\u67e5\u70b9\u9891\u7387\u4e0b\u7684\u6027\u80fd\u3002\u8fd9\u4e9b\u5206\u6570\u4e3b\u8981\u662f\u670d\u52a1\u5668\u548c\u5ba2\u6237\u7aef\u4e4b\u95f4\u7684\u7f51\u7edc\u7f13\u51b2\u533a\u6240\u9020\u6210\u7684\u5ef6\u8fdf\u7684\u51fd\u6570\u3002\u5c3d\u7ba1\u5c06\u5b83\u4eec\u914d\u7f6e\u4e3a\u5728\u4e00\u5b9a\u9891\u7387\u8303\u56f4\u5185\u8fd0\u884c\uff0c\u4f46SPECweb\u8db3\u591f\u5feb\u7684\u63a5\u89e6\u5185\u5b58\uff0c\u4ee5\u81f3\u4e8e\u4f20\u8f93\u5728\u68c0\u67e5\u70b9\u4e4b\u95f4\u7684\u5185\u5b58\u6240\u9700\u7684\u65f6\u95f4\u6709\u65f6\u4f1a\u8d85\u8fc7100\u6beb\u79d2\uff0c\u800c\u4e0d\u5fc5\u8003\u8651\u68c0\u67e5\u70b9\u9891\u7387\u5982\u4f55\u3002\u7531\u4e8e\u5728\u786e\u8ba4\u68c0\u67e5\u70b9\u72b6\u6001\u4e4b\u524d\u65e0\u6cd5\u91ca\u653e\u7f51\u7edc\u7f13\u51b2\u533a\uff0c\u56e0\u6b64\u6709\u6548\u7f51\u7edc\u5ef6\u8fdf\u53ef\u80fd\u9ad8\u4e8e\u914d\u7f6e\u7684\u68c0\u67e5\u70b9\u95f4\u9694\u3002 Remus\u786e\u4fdd\u5728\u6bcf\u4e2aepoch\u5f00\u59cb\u65f6\u90fd\u5c06VM\u6302\u8d77\uff0c\u4f46\u662f\u65e0\u6cd5\u786e\u4fdd\u5f53\u524d\u6bcf\u4e2aepoch\u8981\u590d\u5236\u7684\u72b6\u6001\u603b\u91cf\u4e0d\u8d85\u8fc7\u5728\u914d\u7f6e\u7684epoch\u957f\u5ea6\u5185\u53ef\u7528\u7684\u5e26\u5bbd\u3002\u7531\u4e8e\u6709\u6548\u68c0\u67e5\u70b9\u9891\u7387\u4f4e\u4e8e\u914d\u7f6e\u7684\u9891\u7387\uff0c\u5e76\u4e14\u7f51\u7edc\u5ef6\u8fdf\u5728SPECweb\u5f97\u5206\u4e2d\u5360\u4e3b\u5bfc\u5730\u4f4d\uff0c\u56e0\u6b64\u5728\u914d\u7f6e\u7684\u9891\u7387\u8303\u56f4\u5185\u6027\u80fd\u76f8\u5bf9\u8f83\u5e73\u5766\u3002\u5728\u914d\u7f6e\u7684\u6bcf\u79d210\u300120\u300130\u548c40\u4e2a\u68c0\u67e5\u70b9\u901f\u7387\u4e0b\uff0c\u83b7\u5f97\u7684\u5e73\u5747\u68c0\u67e5\u70b9\u901f\u7387\u5206\u522b\u4e3a9.98\u300116.38\u300120.25\u548c23.34\uff0c\u6216\u8005\u5e73\u5747\u5ef6\u8fdf\u5206\u522b\u4e3a100ms\uff0c61ms\uff0c49ms\u548c43ms\u3002<\/p>\n<p>SPECweb\u662f\u4e00\u4e2a\u9700\u8981\u5927\u91cfRAM\u7684\u5de5\u4f5c\u8d1f\u8f7d\uff0c\u5bf9\u7f51\u7edc\u5ef6\u8fdf\u4e5f\u975e\u5e38\u654f\u611f\u3002\u8fd9\u4f7f\u5f97\u5b83\u4e0d\u9002\u5408\u6211\u4eec\u5f53\u524d\u7684\u5b9e\u73b0\uff0c\u8be5\u5b9e\u73b0\u5c06\u7f51\u7edc\u5ef6\u8fdf\u6362\u4e3a\u5185\u5b58\u541e\u5410\u91cf\u3002\u56fe8\u5c55\u793a\u4e86\u5ba2\u6237\u7aefVM\u548cWeb\u670d\u52a1\u5668\u5728SPECweb\u4e0a\u7684\u5de8\u5927\u6548\u679c\u5ef6\u8fdf\u3002\u6211\u4eec\u4f7f\u7528Linux netem [19]\u6392\u961f\u89c4\u5219\u4e3aWeb\u670d\u52a1\u5668\uff08\u865a\u62df\u5316\u4f46\u672a\u5728Remus\u4e0b\u8fd0\u884c\uff09\u7684\u51fa\u7ad9\u94fe\u63a5\u6dfb\u52a0\u4e0d\u540c\u7a0b\u5ea6\u7684\u5ef6\u8fdf\u3002\u4e3a\u4e86\u8fdb\u884c\u6bd4\u8f83\uff0c\u56fe7\u8fd8\u663e\u793a\u4e86\u7981\u7528\u7f51\u7edc\u7f13\u51b2\u65f6\u7684\u4fdd\u62a4\u5f00\u9500\uff0c\u4ee5\u4fbf\u66f4\u597d\u5730\u5c06\u7f51\u7edc\u5ef6\u8fdf\u4e0e\u5176\u4ed6\u5f62\u5f0f\u7684\u68c0\u67e5\u70b9\u5f00\u9500\u9694\u79bb\u5f00\uff08\u540c\u6837\uff0c\u5e73\u9762\u7684\u914d\u7f6e\u6587\u4ef6\u662f\u7531\u4e8e\u6709\u6548\u7684\u68c0\u67e5\u70b9\u901f\u7387\u4f4e\u4e8e\u914d\u7f6e\u7684\u901f\u7387\uff09 \u3002\u7b2c3.4\u8282\u4e2d\u8ba8\u8bba\u7684\u622a\u6b62\u65f6\u95f4\u8c03\u5ea6\u548c\u9875\u9762\u538b\u7f29\u662f\u51cf\u5c11\u68c0\u67e5\u70b9\u5ef6\u8fdf\u548c\u4f20\u8f93\u65f6\u95f4\u7684\u4e24\u79cd\u53ef\u80fd\u7684\u6280\u672f\u3002\u4e24\u8005\u4e4b\u4e00\u6216\u4e24\u8005\u90fd\u4f1a\u51cf\u5c11\u68c0\u67e5\u70b9\u5ef6\u8fdf\uff0c\u56e0\u6b64\u53ef\u80fd\u4f1a\u5927\u5927\u63d0\u9ad8SPECweb\u6027\u80fd<\/p>\n<p>Postmark \u524d\u9762\u7684\u90e8\u5206\u63cf\u8ff0\u4e86\u53d7\u4fdd\u62a4\u7684\u7f51\u7edc\u548c\u5185\u5b58\u6027\u80fd\uff0c\u4f46\u662f\u6240\u4f7f\u7528\u7684\u57fa\u51c6\u4ec5\u5728\u78c1\u76d8\u5b50\u7cfb\u7edf\u4e0a\u65bd\u52a0\u4e86\u4e2d\u7b49\u8d1f\u8f7d\u3002 \u4e3a\u4e86\u66f4\u597d\u5730\u4e86\u89e3\u78c1\u76d8\u7f13\u51b2\u673a\u5236\u7684\u6548\u679c\uff0c\u6211\u4eec\u8fd0\u884c\u4e86Postmark\u78c1\u76d8\u57fa\u51c6\u6d4b\u8bd5\uff08\u7248\u672c1.51\uff09\u3002 \u8be5\u57fa\u51c6\u6d4b\u8bd5\u5bf9\u541e\u5410\u91cf\u548c\u78c1\u76d8\u54cd\u5e94\u65f6\u95f4\u5747\u5f88\u654f\u611f\u3002 \u4e3a\u4e86\u9694\u79bb\u78c1\u76d8\u590d\u5236\u7684\u6210\u672c\uff0c\u6211\u4eec\u5728\u8fd9\u4e9b\u6d4b\u8bd5\u671f\u95f4\u6ca1\u6709\u4f7f\u7528\u5185\u5b58\u6216\u7f51\u7edc\u4fdd\u62a4\u3002 \u914d\u7f6e\u4e0e\u4e0d\u53d7\u4fdd\u62a4\u7684\u7cfb\u7edf\u76f8\u540c\uff0c\u9664\u4e86\u865a\u62df\u78c1\u76d8\u7531Tapdisk\u590d\u5236\u6a21\u5757\u63d0\u4f9b\u3002 \u56fe9\u663e\u793a\u4e86\u6267\u884c10000\u4e2a\u90ae\u6233\u4e8b\u52a1\u6240\u9700\u7684\u603b\u65f6\u95f4\uff0c\u8fd9\u4e9b\u4e8b\u52a1\u4e0d\u9700\u8981\u78c1\u76d8\u590d\u5236\uff0c\u5e76\u4e14\u590d\u5236\u7684\u78c1\u76d8\u4ee5\u6bcf\u79d210\u300120\u300130\u548c40\u6b21\u7684\u9891\u7387\u63d0\u4ea4\u3002\u7ed3\u679c\u8868\u660e\u590d\u5236\u5bf9\u78c1\u76d8\u6027\u80fd\u6ca1\u6709\u663e\u8457\u5f71\u54cd\u3002<\/p>\n<p>3.4 Potential optimizations \u6f5c\u5728\u7684\u4f18\u5316<br \/>\n\u5c3d\u7ba1\u6211\u4eec\u76f8\u4fe1\u672c\u8282\u524d\u9762\u663e\u793a\u7684\u6027\u80fd\u5f00\u9500\u5bf9\u4e8e\u5b83\u4eec\u6240\u63d0\u4f9b\u7684\u529f\u80fd\u662f\u5408\u7406\u7684\uff0c\u4f46\u6211\u4eec\u4ecd\u5e0c\u671b\u8fdb\u4e00\u6b65\u964d\u4f4e\u5b83\u4eec\uff0c\u5c24\u5176\u662f\u5bf9\u4e8e\u5ef6\u8fdf\u654f\u611f\u7684\u5de5\u4f5c\u8d1f\u8f7d\u3002\u9664\u4e86\u5bf9\u73b0\u6709\u4ee3\u7801\u8fdb\u884c\u66f4\u4ed4\u7ec6\u7684\u8c03\u6574\u4e4b\u5916\uff0c\u6211\u4eec\u8ba4\u4e3a\u4ee5\u4e0b\u6280\u672f\u6709\u53ef\u80fd\u6781\u5927\u5730\u63d0\u9ad8\u6027\u80fd\u3002\u65f6\u9650\u5f0f\u8c03\u5ea6\u6cd5 \u5f53\u524d\u6267\u884c\u68c0\u67e5\u70b9\u6240\u9700\u7684\u65f6\u95f4\u662f\u53ef\u53d8\u7684\uff0c\u5177\u4f53\u53d6\u51b3\u4e8e\u8981\u590d\u5236\u7684\u5185\u5b58\u91cf\u3002\u5c3d\u7ba1Remus\u786e\u4fdd\u5728\u6bcf\u4e2a\u65f6\u671f\u7684\u5f00\u59cb\u90fd\u5c06\u53d7\u4fdd\u62a4\u7684VM\u6302\u8d77\uff0c\u4f46\u5f53\u524d\u5b83\u5e76\u672a\u5c1d\u8bd5\u63a7\u5236\u53ef\u80fd\u5728\u5404\u4e2a\u65f6\u671f\u4e4b\u95f4\u6539\u53d8\u7684\u72b6\u6001\u91cf\u3002\u4e3a\u4e86\u63d0\u4f9b\u66f4\u4e25\u683c\u7684\u8c03\u5ea6\u4fdd\u8bc1\uff0c\u53ef\u4ee5\u6839\u636e\u68c0\u67e5\u810f\u9875\u7684\u6570\u91cf\uff0c\u5728\u68c0\u67e5\u70b9\u4e4b\u95f4\u663e\u7740\u964d\u4f4e\u8bbf\u5ba2\u64cd\u4f5c\u7684\u901f\u5ea6[10]\u3002\u4f18\u5148\u8003\u8651\u5ef6\u8fdf\u800c\u4e0d\u662f\u541e\u5410\u91cf\u7684\u5e94\u7528\u7a0b\u5e8f\uff08\u4f8b\u5982\uff0c\u7b2c3.3\u8282\u4e2d\u8ba8\u8bba\u7684SPECweb\u57fa\u51c6\u6d4b\u8bd5\u6240\u5efa\u6a21\u7684\u5e94\u7528\u7a0b\u5e8f\uff09\u53ef\u4ee5\u542f\u7528\u6b64\u9650\u5236\u4ee5\u63d0\u9ad8\u6027\u80fd\u3002\u5bf9\u4e8e\u8fd9\u79cd\u64cd\u4f5c\uff0c\u53ef\u4ee5\u6269\u5c55\u5f71\u5b50\u9875\u8868\u53e5\u67c4\uff0c\u4ee5\u4fbf\u5728\u810f\u9875\u6570\u8d85\u8fc7\u67d0\u4e2a\u9ad8\u6c34\u4f4d\u7ebf\u65f6\u8c03\u7528\u56de\u8c03\uff0c\u6216\u8005\u914d\u7f6e\u4e3a\u76f4\u63a5\u6682\u505c\u865a\u62df\u673a<\/p>\n<p>\u9875\u9762\u538b\u7f29 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[9]\u4e2d\uff0c\u865a\u62df\u5316\u88ab\u7528\u6765\u4e3a\u8bb0\u5f55\u76ee\u6807\u7cfb\u7edf\u4e2d\u7684\u72b6\u6001\u53d8\u5316\u63d0\u4f9b\u4e00\u4e2a\u5b89\u5168\u5c42\uff0c\u4ee5\u4fbf\u4e3a\u5165\u4fb5\u68c0\u6d4b\u7cfb\u7edf\u63d0\u4f9b\u66f4\u597d\u7684\u53d6\u8bc1\u8bc1\u636e\u3002\u91cd\u64ad\u7684\u7cfb\u7edf\u662f\u539f\u59cb\u7cfb\u7edf\u7684\u53ea\u8bfb\u526f\u672c\uff0c\u9664\u975e\u4e3a\u4e86\u91cd\u65b0\u521b\u5efa\u7cfb\u7edf\u635f\u574f\u4e2d\u6240\u6d89\u53ca\u7684\u4e8b\u4ef6\uff0c\u5426\u5219\u4e0d\u6253\u7b97\u8fd0\u884c\u8be5\u526f\u672c\u3002\u65e5\u5fd7\u8bb0\u5f55\u4e5f\u5df2\u7528\u4e8e\u6784\u5efa\u65f6\u95f4\u65c5\u884c\u7684\u8c03\u8bd5\u5668[13]\uff0c\u4e0eReVirt\u4e00\u6837\uff0c\u8be5\u56de\u653e\u5668\u4ec5\u51fa\u4e8e\u53d6\u8bc1\u76ee\u7684\u800c\u91cd\u653e\u7cfb\u7edf\u3002<\/p>\n<p>\u64cd\u4f5c\u7cfb\u7edf\u590d\u5236 \u6709\u8bb8\u591a\u64cd\u4f5c\u7cfb\u7edf\uff0c\u4f8b\u5982Accent [25]\uff0cAmoeba [18]\uff0cMOSIX [1]\u548cSprite [23]\uff0c\u5b83\u4eec\u652f\u6301\u8fdb\u7a0b\u8fc1\u79fb\uff0c\u4e3b\u8981\u7528\u4e8e\u8d1f\u8f7d\u5e73\u8861\u3002\u4f7f\u7528\u6d41\u7a0b\u8fc1\u79fb\u8fdb\u884c\u6545\u969c\u6062\u590d\u7684\u4e3b\u8981\u6311\u6218\u662f\uff0c\u8fc1\u79fb\u7684\u8fdb\u7a0b\u901a\u5e38\u4f1a\u5c06\u5269\u4f59\u4f9d\u8d56\u9879\u4fdd\u7559\u5728\u4ece\u4e2d\u8fc1\u79fb\u5b83\u4eec\u7684\u7cfb\u7edf\u4e0a\u3002\u4e3a\u4e86\u5bb9\u5fcd\u4e3b\u4e3b\u673a\u7684\u6545\u969c\uff0c\u6d88\u9664\u8fd9\u4e9b\u4f9d\u8d56\u5173\u7cfb\u662f\u5fc5\u8981\u7684\uff0c\u4f46\u662f\u7531\u4e8e\u7cfb\u7edf\u7684\u590d\u6742\u6027\u548c\u8fd9\u4e9b\u4f9d\u8d56\u5173\u7cfb\u7684\u7ed3\u6784\uff0c\u89e3\u51b3\u65b9\u6848\u662f\u96be\u4ee5\u6349\u6478\u7684\u3002<\/p>\n<p>\u5df2\u7ecf\u8fdb\u884c\u4e86\u4e00\u4e9b\u5c1d\u8bd5\u5728\u64cd\u4f5c\u7cfb\u7edf\u7ea7\u522b\u4e0a\u590d\u5236\u5e94\u7528\u7a0b\u5e8f\u3002 Zap [22]\u5c1d\u8bd5\u5728Linux\u5185\u6838\u4e2d\u5f15\u5165\u865a\u62df\u5316\u5c42\u3002\u5fc5\u987b\u4e3a\u6bcf\u4e2a\u64cd\u4f5c\u7cfb\u7edf\u91cd\u65b0\u6784\u5efa\u6b64\u65b9\u6cd5\uff0c\u5e76\u5728\u5404\u4e2a\u7248\u672c\u4e4b\u95f4\u4ed4\u7ec6\u7ef4\u62a4\u3002<\/p>\n<p>\u56fe\u4e66\u9986\u65b9\u6cd5 \u4e00\u4e9b\u5e94\u7528\u7a0b\u5e8f\u5e93\u652f\u6301\u8fdb\u7a0b\u8fc1\u79fb\u548c\u68c0\u67e5\u70b9\u3002\u8fd9\u4e2a\u652f\u6301\u901a\u5e38\u7528\u4e8e\u5e76\u884c\u5e94\u7528\u7a0b\u5e8f\u6846\u67b6\uff0c\u5982CoCheck[29]\u3002\u901a\u5e38\uff0c\u8fdb\u7a0b\u8fc1\u79fb\u7528\u4e8e\u8d1f\u8f7d\u5e73\u8861\uff0c\u68c0\u67e5\u70b9\u7528\u4e8e\u5728\u51fa\u73b0\u6545\u969c\u65f6\u6062\u590d\u6574\u4e2a\u5206\u5e03\u5f0f\u5e94\u7528\u7a0b\u5e8f<\/p>\n<p>\u590d\u5236\u5b58\u50a8\u3002\u5728\u7528\u4e8e\u707e\u96be\u6062\u590d\u548c\u53d6\u8bc1\u7684\u53ef\u68c0\u67e5\u70b9\u5b58\u50a8\u65b9\u9762\u4e5f\u8fdb\u884c\u4e86\u5927\u91cf\u5de5\u4f5c\u3002 Linux\u903b\u8f91\u5377\u7ba1\u7406\u5668[14]\u63d0\u4f9b\u4e86\u4e00\u79cd\u6709\u9650\u5f62\u5f0f\u7684\u5757\u5b58\u50a8\u7684\u5199\u65f6\u590d\u5236\u5feb\u7167\u89c6\u5dee[33]\uff0c\u901a\u8fc7\u5728\u5757\u7ea7\u522b\u63d0\u4f9b\u6709\u9650\u7684\u8f7b\u91cf\u7ea7\u5199\u65f6\u590d\u5236\u5feb\u7167\uff0c\u663e\u8457\u6539\u8fdb\u4e86\u6b64\u8bbe\u8ba1\u6c34\u5e73\u89c6\u56fe\u6587\u4ef6\u7cfb\u7edf[11]\u5141\u8bb8\u7ed9\u5b9a\u5377\u4e00\u6b21\u5b58\u5728\u4e00\u4e2a\u5feb\u7167\u3002\u5176\u4ed6\u65b9\u6cd5\u5305\u62ecRSnapshot\uff0c\u5b83\u8fd0\u884c\u5728\u6587\u4ef6\u7cfb\u7edf\u4e4b\u4e0a\uff0c\u4ee5\u901a\u8fc7\u4e00\u7cfb\u5217\u786c\u94fe\u63a5\u548c\u5404\u79cd\u5907\u4efd\u8f6f\u4ef6\u6765\u521b\u5efa\u5feb\u7167\u3002 DRBD [26]\u662f\u5757\u8bbe\u5907\u4e0a\u7684\u8f6f\u4ef6\uff0c\u53ef\u900f\u660e\u5730\u5c06\u5176\u590d\u5236\u5230\u53e6\u4e00\u53f0\u670d\u52a1\u5668\u3002<\/p>\n<p>\u6295\u673a\u6267\u884c\u3002\u4f7f\u7528\u63a8\u6d4b\u6027\u6267\u884c\u5c06I \/ O\u5904\u7406\u4e0e\u8ba1\u7b97\u9694\u79bb\u5f00\u6765\u7684\u65b9\u6cd5\u5df2\u7ecf\u88ab\u5176\u4ed6\u7cfb\u7edf\u91c7\u7528\u3002\u7279\u522b\u662f\uff0cSpecNFS [20]\u548cRethink the Sync [21]\u4ee5\u4e0e\u6211\u4eec\u7c7b\u4f3c\u7684\u65b9\u5f0f\u4f7f\u7528\u63a8\u6d4b\uff0c\u4ee5\u4f7fI \/ O\u5904\u7406\u5f02\u6b65\u3002 Remus\u4e0e\u8fd9\u4e9b\u7cfb\u7edf\u7684\u4e0d\u540c\u4e4b\u5904\u5728\u4e8e\uff0c\u6765\u81ea\u5ba2\u6237\u673a\u7684\u5757I \/ O\u7684\u6307\u4ee4\u96c6\u59cb\u7ec8\u4fdd\u6301\u4e0d\u53d8\uff1a\u5b83\u4eec\u7acb\u5373\u5e94\u7528\u4e8e\u672c\u5730\u7269\u7406\u78c1\u76d8\u3002\u53d6\u800c\u4ee3\u4e4b\u7684\u662f\uff0c\u6211\u4eec\u7684\u7cfb\u7edf\u7f13\u51b2\u751f\u6210\u7684\u7f51\u7edc\u6d41\u91cf\uff0c\u4ee5\u9694\u79bb\u63a8\u6d4b\u6267\u884c\u7684\u5916\u90e8\u53ef\u89c1\u6548\u679c\uff0c\u76f4\u5230\u76f8\u5173\u72b6\u6001\u88ab\u5b8c\u5168\u590d\u5236\u4e3a\u6b62\u3002<\/p>\n<p>5 Future work<br \/>\n\u672c\u8282\u7b80\u8981\u8ba8\u8bba\u4e86\u6211\u4eec\u6253\u7b97\u63a2\u7d22\u7684\u4e00\u4e9b\u65b9\u5411\uff0c\u4ee5\u6539\u5584\u548c\u6269\u5c55Remus\u3002\u6b63\u5982\u6211\u4eec\u5728\u4e0a\u4e00\u8282\u4e2d\u6240\u6f14\u793a\u7684\u90a3\u6837\uff0c\u9ad8\u53ef\u7528\u6027\u670d\u52a1\u6240\u5e26\u6765\u7684\u5f00\u9500\u5e76\u4e0d\u662f\u4e0d\u5408\u7406\u7684\u3002\u4f46\u662f\uff0c\u672c\u6587\u63cf\u8ff0\u7684\u5b9e\u73b0\u8fd8\u5f88\u5e74\u8f7b\u3002\u4e00\u4e9b\u6f5c\u5728\u7684\u4f18\u5316\u9886\u57df\u4ecd\u6709\u5f85\u63a2\u7d22\u3002\u5b8c\u6210\u7b2c3.4\u8282\u4e2d\u8ba8\u8bba\u7684\u76ee\u6807\u4f18\u5316\u540e\uff0c\u6211\u4eec\u6253\u7b97\u7814\u7a76\u66f4\u901a\u7528\u7684\u6269\u5c55\uff0c\u4f8b\u5982\u4ee5\u4e0b\u6240\u8ff0\u3002<\/p>\n<p>\u5185\u7701\u4f18\u5316 \u76ee\u524d\uff0cRemus\u4f20\u64ad\u7684\u72b6\u6001\u8d85\u51fa\u4e86\u4e25\u683c\u7684\u8981\u6c42\u3002\u4f8b\u5982\uff0c\u7f13\u51b2\u533a\u9ad8\u901f\u7f13\u5b58\u9875\u9762\u4e0d\u9700\u8981\u590d\u5236\uff0c\u56e0\u4e3a\u5b83\u4eec\u53ef\u4ee5\u7b80\u5355\u5730\u4ece\u5907\u4efd\u4e0a\u7684\u6301\u4e45\u6027\u5b58\u50a8\u4e2d\u8bfb\u53d6\u3002\u4e3a\u4e86\u5229\u7528\u8fd9\u4e00\u70b9\uff0c\u865a\u62df\u78c1\u76d8\u8bbe\u5907\u53ef\u4ee5\u8bb0\u5f55\u4e3a\u78c1\u76d8\u8bfb\u53d6\u63d0\u4f9b\u7ed9\u5b83\u7684\u7f13\u51b2\u533a\u7684\u5730\u5740\uff0c\u4ee5\u53ca\u76f8\u5173\u7684\u78c1\u76d8\u5730\u5740\u3002\u5982\u679c\u5728\u78c1\u76d8\u8bfb\u53d6\u5b8c\u6210\u540e\u672a\u4fee\u6539\u8fd9\u4e9b\u9875\u9762\uff0c\u5219\u5185\u5b58\u590d\u5236\u8fc7\u7a0b\u53ef\u80fd\u4f1a\u8df3\u8fc7\u8fd9\u4e9b\u9875\u9762\u3002\u8fdc\u7aef\u5c06\u8d1f\u8d23\u4ece\u5176\u78c1\u76d8\u526f\u672c\u4e2d\u91cd\u65b0\u53d1\u51fa\u8bfb\u53d6\u5185\u5bb9\uff0c\u4ee5\u586b\u5145\u4e22\u5931\u7684\u9875\u9762\u3002\u5bf9\u4e8e\u7e41\u91cd\u7684\u78c1\u76d8\u5de5\u4f5c\u8d1f\u8f7d\uff0c\u8fd9\u5e94\u8be5\u53ef\u4ee5\u5927\u5927\u51cf\u5c11\u72b6\u6001\u4f20\u64ad\u65f6\u95f4\u3002<\/p>\n<p>\u786c\u4ef6\u865a\u62df\u5316\u652f\u6301 \u7531\u4e8e\u6211\u4eec\u5b9e\u9a8c\u5ba4\u5728\u5f00\u53d1\u65f6\u7f3a\u4e4f\u652f\u6301\u786c\u4ef6\u865a\u62df\u5316\u7684\u8bbe\u5907\uff0c\u6211\u4eec\u53ea\u5bf9\u534a\u865a\u62df\u5316\u7684\u5ba2\u6237\u865a\u62df\u673a\u63d0\u4f9b\u4e86\u5b8c\u5584\u7684\u652f\u6301\u3002\u4f46\u662f\uff0c\u6211\u4eec\u5df2\u7ecf\u7814\u7a76\u4e86\u652f\u6301\u5b8c\u5168\u865a\u62df\u5316\u73af\u5883\u6240\u9700\u7684\u4ee3\u7801\uff0c\u5e76\u4e14\u524d\u666f\u5341\u5206\u5e7f\u9614\u3002\u5b9e\u9645\u4e0a\uff0c\u7531\u4e8e\u652f\u6301\u865a\u62df\u5316\u7684\u786c\u4ef6\u63d0\u4f9b\u4e86\u66f4\u597d\u7684\u5c01\u88c5\uff0c\u56e0\u6b64\u5b83\u53ef\u80fd\u6bd4\u534a\u865a\u62df\u5b9e\u73b0\u66f4\u7b80\u5355\u3002<\/p>\n<p>\u96c6\u7fa4\u590d\u5236 \u6269\u5c55\u7cfb\u7edf\u4ee5\u4fdd\u62a4\u591a\u4e2a\u76f8\u4e92\u8fde\u63a5\u7684\u4e3b\u673a\u662f\u5f88\u6709\u7528\u3002\u5f53\u6bcf\u4e2a\u4e3b\u673a\u90fd\u53ef\u4ee5\u72ec\u7acb\u5730\u53d7\u5230\u4fdd\u62a4\u65f6\uff0c\u534f\u8c03\u4fdd\u62a4\u5c06\u4f7f\u5185\u90e8\u7f51\u7edc\u901a\u4fe1\u80fd\u591f\u5728\u4e0d\u8fdb\u884c\u7f13\u51b2\u7684\u60c5\u51b5\u4e0b\u7ee7\u7eed\u8fdb\u884c\u3002\u8fd9\u6709\u53ef\u80fd\u663e\u8457\u63d0\u9ad8\u5206\u5e03\u5f0f\u5e94\u7528\u7a0b\u5e8f\u7684\u541e\u5410\u91cf\uff0c\u5305\u62ec\u6258\u7ba1\u4e3b\u673a\u73af\u5883\u4e2d\u6d41\u884c\u7684\u4e09\u5c42web\u5e94\u7528\u7a0b\u5e8f\u914d\u7f6e\u3002\u96c6\u7fa4\u590d\u5236\u7684\u652f\u6301\u53ef\u4ee5\u901a\u8fc7\u5206\u5e03\u5f0f\u68c0\u67e5\u70b9\u534f\u8bae\u6765\u63d0\u4f9b\uff0c\u4f8b\u5982\u6211\u4eec\u7684\u540c\u4e8bGang Peng\u7684\u7855\u58eb\u8bba\u6587[24]\u4e2d\u6240\u63cf\u8ff0\u7684\uff0c\u8be5\u534f\u8bae\u4f7f\u7528\u4e86Remus\u63d0\u4f9b\u7684\u68c0\u67e5\u70b9\u57fa\u7840\u7ed3\u6784\u7684\u65e9\u671f\u7248\u672c\u3002<\/p>\n<p>\u707e\u96be\u6062\u590d\u3002 Remus\u662fSecond-Site [7]\u9879\u76ee\u7684\u4ea7\u54c1\uff0c\u8be5\u9879\u76ee\u7684\u76ee\u7684\u662f\u63d0\u4f9b\u8fd0\u884c\u7cfb\u7edf\u7684\u5730\u7406\u591a\u6837\u6027\u955c\u50cf\uff0c\u4ee5\u4fbf\u5728\u7269\u7406\u707e\u96be\u4e2d\u751f\u5b58\u3002\u4e3a\u4e86\u8bd5\u9a8c\u8fd9\u79cd\u914d\u7f6e\uff0c\u6211\u4eec\u6b63\u5728\u8ba1\u5212Remus\u7684\u591a\u7ad9\u70b9\u90e8\u7f72\u3002\u5728\u957f\u8ddd\u79bb\u90e8\u7f72\u4e2d\uff0c\u7f51\u7edc\u5ef6\u8fdf\u5c06\u66f4\u5927\u5173\u6ce8\u3002\u53e6\u5916\uff0c\u9700\u8981\u91cd\u65b0\u914d\u7f6e\u7f51\u7edc\u4ee5\u76f8\u5e94\u5730\u91cd\u5b9a\u5411Internet\u6d41\u91cf<\/p>\n<p>\u65e5\u5fd7\u7ed3\u6784\u5316\u6570\u636e\u4e2d\u5fc3  \u6211\u4eec\u6b63\u5728\u6269\u5c55Remus\u5df2\u7ecf\u6355\u83b7\u548c\u4fdd\u7559\u53d7\u4fdd\u62a4VM\u7684\u5b8c\u6574\u6267\u884c\u5386\u53f2\uff0c\u800c\u4e0d\u4ec5\u4ec5\u662f\u6700\u65b0\u7684\u68c0\u67e5\u70b9\u3002 \u901a\u8fc7\u5c06\u5ba2\u6237\u5185\u5b58\u6620\u5c04\u5230Parallax [17]\uff0c\u8fd9\u662f\u4e13\u4e3a\u9ad8\u9891\u5feb\u7167\u8bbe\u8ba1\u7684\u865a\u62df\u5757\u5b58\u50a8\uff0c\u6211\u4eec\u5e0c\u671b\u80fd\u591f\u4ee5\u975e\u5e38\u7cbe\u7ec6\u7684\u7c92\u5ea6\u6709\u6548\u5730\u5b58\u50a8\u5927\u91cf\u6301\u4e45\u6027\u548c\u77ac\u6001\u72b6\u6001\u3002 \u8fd9\u4e9b\u6570\u636e\u5728\u6784\u5efa\u9ad8\u7ea7\u8c03\u8bd5\u548c\u53d6\u8bc1\u5de5\u5177\u65f6\u975e\u5e38\u6709\u7528\u3002\u5b83\u8fd8\u53ef\u4ee5\u63d0\u4f9b\u4ece\u72b6\u6001\u635f\u574f\u4e2d\u6062\u590d\u7684\u65b9\u4fbf\u673a\u5236\uff0c\u65e0\u8bba\u662f\u7531operatorerror\u8fd8\u662f\u7531\u6076\u610f\u4ee3\u7406\uff08\u75c5\u6bd2\u7b49\uff09\u5f15\u5165\u7684<\/p>\n<p>6 Conclusion \u7ed3\u8bba<br \/>\nRemus\u662f\u4e00\u79cd\u65b0\u9896\u7684\u7cfb\u7edf\uff0c\u7528\u4e8e\u5728\u73b0\u6709\u5546\u54c1\u4e0a\u8fd0\u884c\u7684\u8f6f\u4ef6\u4e0a\u6539\u9020\u9ad8\u53ef\u7528\u6027\u786c\u4ef6\u7cfb\u7edf\u4f7f\u7528\u865a\u62df\u5316\u6765\u5c01\u88c5\u53d7\u4fdd\u62a4\u7684\u865a\u62df\u673a\uff0c\u5e76\u6267\u884c\u9891\u7e41\u7684\u6574\u4e2a\u7cfb\u7edf\u68c0\u67e5\u70b9\u4ee5\u5f02\u6b65\u590d\u5236\u76f8\u5bf9\u6267\u884c\u7684\u5355\u4e2a\u7279\u5b9a\u865a\u62df\u673a\u7684\u72b6\u6001\u3002<\/p>\n<p>\u63d0\u4f9b\u9ad8\u53ef\u7528\u6027\u662f\u4e00\u9879\u8270\u5de8\u7684\u4efb\u52a1\uff0c\u5e76\u4e14\u4f20\u7edf\u4e0a\u9700\u8981\u5927\u91cf\u7684\u6210\u672c\u548c\u5de5\u7a0b\u4e0a\u7684\u52aa\u529b\u3002 Remus\u901a\u8fc7\u5728\u865a\u62df\u5316\u5e73\u53f0\u5c42\u5c06\u9ad8\u53ef\u7528\u6027\u5448\u73b0\u4e3a\u4e00\u9879\u670d\u52a1\u6765\u5b9e\u73b0\u5546\u54c1\u5316\uff1a\u5bf9\u4e8e\u7279\u5b9a\u7684\u865a\u62df\u673a\uff0c\u53ef\u4ee5\u7b80\u5355\u5730\u201c\u6253\u5f00\u201d 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\u6d89\u53ca\u8d44\u6599 \u63a8\u6d4b\u6027\u6267\u884c\u7684\u6982\u5ff5\uff1ahttps:\/\/zhuanlan.zhihu.co\u2026 <span class=\"read-more\"><a href=\"http:\/\/rain1024.com\/index.php\/2020\/08\/30\/%e3%80%8aremus-high-availability-via-asychronous-virtual-machine-replication%e3%80%8b%e8%af%91%e6%96%87\/\">Read More 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