{"id":610,"date":"2010-11-22T02:16:34","date_gmt":"2010-11-21T18:16:34","guid":{"rendered":"http:\/\/www.yaoge123.com\/blog\/?p=610"},"modified":"2010-11-25T11:52:28","modified_gmt":"2010-11-25T03:52:28","slug":"%e7%90%86%e8%a7%a3-vmware-%e5%86%85%e5%ad%98%e8%b5%84%e6%ba%90%e7%ae%a1%e7%90%86","status":"publish","type":"post","link":"https:\/\/www.yaoge123.com\/blog\/archives\/610","title":{"rendered":"\u7406\u89e3 VMware \u5185\u5b58\u8d44\u6e90\u7ba1\u7406"},"content":{"rendered":"<p>\u5728\u865a\u62df\u5316\u5e94\u7528\u4e2d\uff0c\u5185\u5b58\u662f\u6700\u4e3a\u5b9d\u8d35\u7684\u8d44\u6e90\u3002\u540cCPU\u548c\u5b58\u50a8\u8d44\u6e90\u7ba1\u7406\u76f8\u6bd4\uff0c\u865a\u62df\u5316\u7684\u5185\u5b58\u8d44\u6e90\u7ba1\u7406\u66f4\u4e3a\u590d\u6742\u3002<\/p>\n<p><strong>\u4e00\u3001\u5185\u5b58\u56de\u6536\uff1a<\/strong><\/p>\n<p>VMware ESX hypervisor(\u7ba1\u7406\u7a0b\u5e8f)\u80fd\u591f\u622a\u83b7\u865a\u62df\u673a\u7b2c\u4e00\u6b21\u8bbf\u95ee\u67d0\u5185\u5b58\uff0c\u5c06\u7269\u7406\u5185\u5b58\u586b\u96f6\u540e\u5206\u914d\u7ed9\u865a\u62df\u673a\uff0c\u4f46\u662fhypervisor\u65e0\u6cd5\u5f97\u77e5\u865a\u62df\u673a\u4e2d\u54ea\u4e9b\u5185\u5b58\u662f\u7a7a\u95f2\u7684\u3002hypervisor\u4e0d\u65ad\u7684\u5c06\u5185\u5b58\u5206\u914d\u7ed9\u865a\u62df\u673a\uff0c\u5f53\u5728\u5185\u5b58\u8d85\u914d(memory overcommitment)\u7684\u60c5\u51b5\u4e0b\u4e3b\u673a\u7269\u7406\u5185\u5b58\u5c06\u53ef\u80fd\u8017\u5c3d\uff0c\u56e0\u6b64hypervisor\u9700\u8981\u4ece\u865a\u62df\u673a\u4e2d\u56de\u6536(reclaim)\u5185\u5b58\uff0cESX hypervisor\u4f7f\u7528\u4ee5\u4e0b\u673a\u5236\u56de\u6536\u5185\u5b58\uff1a<\/p>\n<ol>\n<li>\u900f\u660e\u9875\u5171\u4eab(Transparent Page Sharing)\uff1a\u5f53\u591a\u4e2a\u865a\u62df\u673a\u5728\u4e00\u4e2a\u4e3b\u673a\u4e0a\u8fd0\u884c\u65f6\uff0c\u53ef\u80fd\u6709\u4e9b\u5185\u5b58\u9875\u662f\u4e00\u6837\u7684\uff0c\u6bd4\u5982\u4e00\u6837\u7684Guest OS\u3002hypervisor\u901a\u8fc7\u5468\u671f\u6027\u7684\u626b\u63cf\u5185\u5b58\u9875\u751f\u6210hash\u503c\u5728\u5185\u5b58hash\u603b\u8868\u4e2d\u67e5\u627e\uff0c\u4e00\u65e6hash\u5339\u914d\u5c31\u4f1a\u8fdb\u884c\u5b8c\u6574\u6bd4\u8f83\uff0c\u786e\u8ba4\u5185\u5b58\u9875\u5b8c\u5168\u4e00\u6837\u540ehypervisor\u4f1a\u5220\u9664\u5197\u4f59\u5185\u5b58\u9875\u4ee5\u6307\u9488\u4ee3\u4e4b\uff0c\u7c7b\u4f3c\u4e8e\u5b58\u50a8\u4e2d\u7684\u91cd\u590d\u6570\u636e\u5220\u9664\u529f\u80fd\u3002\u5f53\u67d0\u865a\u62df\u673a\u5bf9\u5171\u4eab\u5185\u5b58\u9875\u8bd5\u56fe\u5199\u65f6\uff0chypervisor\u4f1a\u590d\u5236\u4e00\u4e2a\u8fd9\u4e2a\u865a\u62df\u673a\u7684\u4e13\u6709\u9875\u6765\u4fee\u6539\uff0c\u4fdd\u8bc1\u5171\u4eab\u9875\u4e0d\u88ab\u7834\u574f\u3002\u8fd9\u79cd\u5185\u5b58\u56de\u6536\u7684\u901f\u5ea6\u53d6\u51b3\u4e8e\u626b\u63cf\u7684\u901f\u5ea6\uff0c\u5728ESX(i)\u7684\u9ad8\u7ea7\u8bbe\u7f6e\u4e2d\u53ef\u4ee5\u8bbe\u7f6e\u626b\u63cf\u901f\u5ea6\u548c\u65f6\u95f4\u95f4\u9694\u3002\u6240\u4ee5\u6700\u597d\u5c06\u76f8\u540c\u6216\u8005\u76f8\u8fd1\u7684OS\u90e8\u7f72\u5728\u4e00\u53f0host\u4e0a\u9762\uff0c\u4ee5\u4fbf\u66f4\u597d\u7684\u4f7f\u7528TPS\u8282\u7701\u5185\u5b58\u3002<\/li>\n<li>\u6c14\u7403\u81a8\u80c0(Ballooning)\uff1a\u7531\u4e8ehypervisor\u65e0\u6cd5\u5f97\u77e5\u865a\u62df\u673a\u4e2d\u54ea\u4e9b\u5185\u5b58\u662f\u7a7a\u95f2\u7684\uff0c\u56e0\u6b64\u4f9d\u9760VMware Tools\u5728Guest OS\u4e2d\u7684\u6c14\u7403\u9a71\u52a8(balloon driver)\u6765\u56de\u6536\u5185\u5b58\u3002\u5f53\u9700\u8981\u4ece\u8be5\u865a\u62df\u673a\u56de\u6536\u5185\u5b58\u65f6\uff0c\u6c14\u7403\u81a8\u80c0\u4eceGuest OS\u4e2d\u8bf7\u6c42\u5185\u5b58\uff0c\u5206\u914d\u7ed9\u6c14\u7403\u9a71\u52a8\u7684\u5185\u5b58\u53ef\u88abhypervisor\u5b89\u5168\u7684\u56de\u6536\uff0cGuest OS\u81ea\u884c\u51b3\u5b9a\u5c06\u54ea\u4e9b\u5185\u5b58swapping\u4ea4\u6362\u5230\u786c\u76d8\u4e0a\u4ee5\u4fdd\u8bc1\u5206\u914d\u7ed9\u6c14\u7403\u9a71\u52a8\u5185\u5b58\u3002\u663e\u7136\u9700\u8981\u5b89\u88c5VMware Tools\u624d\u80fd\u5b9e\u73b0\u6c14\u7403\u56de\u6536\u5185\u5b58\uff0c\u901a\u8fc7\u8fd9\u79cd\u65b9\u5f0f\u56de\u6536\u5185\u5b58\u8f83\u6162\uff0c\u4f9d\u8d56\u4e8eGuest OS\u5185\u5b58\u5206\u914d\u7684\u901f\u5ea6\u3002<\/li>\n<li>\u5185\u5b58\u4ea4\u6362(Hypervisor Swapping)\uff1a\u5f53\u865a\u62df\u673a\u542f\u52a8\u65f6\u5c31\u4f1a\u521b\u5efa\u4e00\u4e2a\u5185\u5b58swap\u6587\u4ef6\uff0c\u6587\u4ef6\u5927\u5c0f\u4e3a\u6700\u5927\u5185\u5b58\u4ea4\u6362\u91cf\uff08\u865a\u62df\u673a\u914d\u7f6e\u5185\u5b58-\u5185\u5b58\u9884\u7559\uff09\u3002\u5f53\u4e0a\u9762\u4e24\u79cd\u56de\u6536\u65b9\u5f0f\u4e0d\u80fd\u6ee1\u8db3\u9700\u6c42\u65f6\uff0chypervisor\u4f1a\u8fdb\u884cswapping\u5c06\u865a\u62df\u673a\u7684\u7269\u7406\u5185\u5b58\u4ea4\u6362\u5230\u786c\u76d8\u4e0a\u3002hypervisor\u5e76\u4e0d\u77e5\u9053\u5c06\u54ea\u4e9b\u5185\u5b58\u4ea4\u6362\u597d\uff0cGuest OS\u4e5f\u4e0d\u77e5\u9053\u54ea\u4e9b\u5185\u5b58\u88ab\u4ea4\u6362\u4e86\uff0c\u8fd9\u5c06\u6781\u5927\u7684\u5f71\u54cd\u865a\u62df\u673a\u7684\u6027\u80fd\uff0c\u5f53\u51fa\u73b0\u8fd9\u79cd\u60c5\u51b5\u65f6\u8bf4\u660e\u9700\u8981\u52a0\u5185\u5b58\u4e86\u3002<\/li>\n<li>\u5185\u5b58\u538b\u7f29(Memory Compression)\uff1a\u8fd9\u662f4.1\u7684\u65b0\u529f\u80fd\uff0c\u5bf9\u5185\u5b58\u7684\u4ea4\u6362\u7684\u4f18\u5316\u3002\u5982\u679cswapping\u7684\u5185\u5b58\u9875\u662f\u53ef\u538b\u7f29\u7684\uff0c\u5219\u5c06\u5176\u538b\u7f29\u540e\u5b58\u50a8\u5728\u538b\u7f29\u7f13\u5b58\u533a\u4e2d\uff0c\u8fd9\u6837\u518d\u6b21\u8bbf\u95ee\u8fd9\u4e2a\u88abswapping\u7684\u5185\u5b58\u65f6\u4ec5\u9700\u8981\u89e3\u538b\u7f29\uff0c\u800c\u4e0d\u662f\u4ece\u786c\u76d8\u8bfb\u53d6\uff0c\u8fd9\u5c06\u5feb\u7684\u591a\u3002\u4e0d\u80fd\u538b\u7f29\u6216\u538b\u7f29\u7f13\u51b2\u533a\u6ee1\u5219\u4f1a\u4e0e\u786c\u76d8\u8fdb\u884c\u771f\u6b63\u7684swapping\u3002\u5728ESX(i)\u7684\u9ad8\u7ea7\u8bbe\u7f6e\u4e2d\u53ef\u4ee5\u8bbe\u7f6e\u538b\u7f29\u7f13\u5b58\u7684\u5927\u5c0f\u7b49\u3002<\/li>\n<\/ol>\n<ul>\n<li>\u5f53\u4e3b\u673a\u53ef\u7528\u5185\u5b58\u9ad8\u4e8e\u7b49\u4e8e6%\u65f6\uff0chypervisor\u4ec5\u4f7f\u7528\u900f\u660e\u9875\u5171\u4eab\u56de\u6536\u5185\u5b58\uff08\u5f53\u6ca1\u6709\u8bbe\u7f6e\u865a\u62df\u673a\u5185\u5b58\u9650\u5236\u65f6\uff09\u3002\u5982\u679c\u865a\u62df\u673a\u8bbe\u5b9a\u4e86\u5185\u5b58\u9650\u5236\uff0c\u5219hypervisor\u4f7f\u7528ballooning\u751a\u81f3swapping\u56de\u6536\u5185\u5b58\u76f4\u5230\u4f4e\u4e8e\u9650\u5b9a\u503c\u3002<\/li>\n<li>\u5f53\u4e3b\u673a\u53ef\u7528\u5185\u5b58\u63a5\u8fd14%\u65f6\uff0chypervisor\u4f7f\u7528ballooning\u56de\u6536\u5185\u5b58\uff0c\u4e00\u822c\u60c5\u51b5\u4e0b\u53ef\u4ee5\u53ca\u65f6\u7684\u56de\u6536\u5185\u5b58\uff0c\u8ba9\u53ef\u7528\u5185\u5b58\u4fdd\u6301\u57284%\u4ee5\u4e0a\u3002<\/li>\n<li>\u5982\u679cballooning\u4e0d\u8db3\u4ee5\u56de\u6536\u5185\u5b58\uff0c\u4e3b\u673a\u53ef\u7528\u5185\u5b58\u63a5\u8fd12%\u65f6\uff0chypervisor\u5728ballooning\u56de\u6536\u5185\u5b58\u7684\u57fa\u7840\u4e0a\u589e\u52a0\u4f7f\u7528swapping(\u5e76\u6fc0\u6d3b\u5185\u5b58\u538b\u7f29)\u52a0\u901f\u5185\u5b58\u56de\u6536\uff0c\u8ba9\u53ef\u7528\u5185\u5b58\u4fdd\u6301\u57284%\u4ee5\u4e0a\u3002<\/li>\n<li>\u7f55\u89c1\u7684\u5f53\u4e3b\u673a\u53ef\u7528\u5185\u5b58\u53ea\u67091%\u65f6\uff0chypervisor\u9664\u4e86\u7ee7\u7eed\u4f7f\u7528ballooning\u548cswapping\u56de\u6536\u5185\u5b58\uff0c\u8fd8\u7981\u6b62\u6240\u6709\u865a\u62df\u673a\u7533\u8bf7\u66f4\u591a\u5185\u5b58\u3002<\/li>\n<\/ul>\n<p><strong>\u4e8c\u3001\u865a\u62df\u673a\u5185\u5b58\u5206\u914d<\/strong><\/p>\n<p>VMware ESX(i)\u63d0\u4f9b\u4e86\u4e09\u4e2a\u53c2\u6570\u6765\u63a7\u5236\u865a\u62df\u673a\u7684\u5185\u5b58\u5206\u914d\uff08\u865a\u62df\u673a\u8bbe\u7f6e-\u8d44\u6e90-\u5185\u5b58\uff09<\/p>\n<ol>\n<li>\u201c\u9650\u5236(Limit)\u201d\u9650\u5b9a\u4e86\u5206\u914d\u7ed9\u865a\u62df\u673a\u7269\u7406\u5185\u5b58\u7684\u4e0a\u9650\uff0c\u5982\u679c\u865a\u62df\u673a\u4f7f\u7528\u7684\u5185\u5b58\u8d85\u8fc7\u8be5\u9650\u5b9a\u503c\u5219hypervisor\u5f3a\u5236\u56de\u6536\u5185\u5b58\uff0c\u9ed8\u8ba4\u662f\u65e0\u9650\u5236\uff0c\u5373\u5df2\u865a\u62df\u673a\u5185\u5b58\u5927\u5c0f\u4e3a\u9650\u3002\u865a\u62df\u673a\u786c\u4ef6\u8bbe\u7f6e\u4e2d\u7684\u5185\u5b58\u5bf9\u4e8e\u5927\u591a\u6570Guest OS\u662f\u4e0d\u80fd\u70ed\u6dfb\u52a0\u7684\uff0c\u6709\u7684\u80fd\u70ed\u6dfb\u52a0\u4f46\u662f\u8981\u4f7f\u7528\u6dfb\u52a0\u7684\u5185\u5b58\u8fd8\u8981\u91cd\u542fGuest OS\uff0c\u53ea\u6709\u5c11\u6570Guest OS\u80fd\u70ed\u6dfb\u52a0\u5e76\u4f7f\u7528\u7684\uff0c\u56e0\u4e3a\u8fd9\u4e2a\u9700\u8981Guest  OS\u8bc6\u522b\uff0c\u56e0\u6b64\u5bf9Guest OS\u8981\u6c42\u9ad8\u3002\u4f46\u662f\u5185\u5b58\u9650\u5236\u53ef\u4ee5\u5728\u865a\u62df\u673a\u8fd0\u884c\u65f6\u968f\u610f\u7684\u8c03\u6574\uff0cGuest OS\u65e0\u9700\u611f\u77e5\u662f\u900f\u660e\u7684\u3002<\/li>\n<li>\u201c\u9884\u7559(Reservation)\u201d\u662f\u4fdd\u8bc1\u5206\u914d\u7ed9\u865a\u62df\u673a\u6700\u4f4e\u7269\u7406\u5185\u5b58\u7684\u4e0b\u9650\uff0c\u5373hypervisor\u81f3\u591a\u4ece\u865a\u62df\u673a\u56de\u6536\u5185\u5b58\u5230\u9884\u7559\u503c\u4e3a\u6b62\uff0c\u4e0d\u518d\u7ee7\u7eed\u56de\u6536\uff0c\u4fdd\u8bc1\u4e00\u4e2a\u57fa\u672c\u7684\u5185\u5b58\u53ef\u907f\u514d\u6027\u80fd\u964d\u4f4e\u5230\u65e0\u6cd5\u5fcd\u53d7\u3002<\/li>\n<li>\u201c\u4efd\u989d(Shares)\u201d\u662f\u5f53\u4e3b\u673a\u5185\u5b58\u8fc7\u91cf\u4f7f\u7528\u65f6\uff0c\u865a\u62df\u673a\u53ef\u83b7\u5f97\u7684\u7269\u7406\u5185\u5b58\u662f\u901a\u8fc7\u4e00\u4e2a\u516c\u5f0f\u8ba1\u7b97\u5f97\u5230\u7684\uff0c\u4efd\u989d\u662f\u5176\u4e2d\u4e00\u9879\u3002\u9ed8\u8ba4\u4efd\u989d=\u865a\u62df\u673a\u5185\u5b58*10\u3002<\/li>\n<\/ol>\n<ul>\n<li>\u516c\u5f0f\uff1a\u03c1=\u4efd\u989d\/(\u6d3b\u52a8\u5185\u5b58+k*\u7a7a\u95f2\u5185\u5b58)\uff0c\u03c1\u5c31\u662f\u8be5\u865a\u62df\u673a\u53ef\u83b7\u5f97\u7269\u7406\u5185\u5b58\u6bd4\u4f8b\u7684\u5206\u5b50\uff0c\u5206\u6bcd\u662f\u6240\u6709\u865a\u62df\u7684\u03c1\u7684\u548c\u3002<br \/>\nk\u662f\u60e9\u7f5a\u56e0\u5b50\uff0ck=1\/(1-IMT)\uff0cIMT\u4e3a\u7a7a\u95f2\u5185\u5b58\u7a0e(Idle Memory Tax)\uff0c\u9ed8\u8ba4IMT=75%\uff0c\u5373k=4\uff0cIMT\u503c\u53ef\u4ee5\u5728ESX(i)\u7684\u9ad8\u7ea7\u8bbe\u7f6e\u4e2d\u4fee\u6539\u3002<br \/>\n\u663e\u7136\u4efd\u989d\u8d8a\u5927\uff0c\u6d3b\u52a8\u5185\u5b58\u6bd4\u4f8b\u8d8a\u9ad8\u5219\u03c1\u8d8a\u5927\uff0c\u53ef\u83b7\u5f97\u7684\u7269\u7406\u5185\u5b58\u8d8a\u591a\u3002hypervisor\u4ece\u03c1\u6700\u5c0f\u7684\u865a\u62df\u673a\u5f00\u59cb\u56de\u6536\u5185\u5b58\u3002<\/li>\n<\/ul>\n<p>\u53c2\u8003\u6587\u732e\uff1a<a href=\"http:\/\/www.vmware.com\/resources\/techresources\/10129\"><br \/>\nUnderstanding Memory Resource Management in VMware ESX 4.1<\/a><br \/>\n<a href=\"http:\/\/delxu.blog.51cto.com\/975660\/288012\">\u7a7a\u95f2\u5185\u5b58\u7a0e\u7684\u7b97\u6cd5<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728\u865a\u62df\u5316\u5e94\u7528\u4e2d\uff0c\u5185\u5b58\u662f\u6700\u4e3a\u5b9d\u8d35\u7684\u8d44\u6e90\u3002\u540cCPU\u548c\u5b58\u50a8\u8d44\u6e90\u7ba1\u7406\u76f8\u6bd4\uff0c\u865a\u62df\u5316\u7684\u5185\u5b58\u8d44\u6e90\u7ba1\u7406\u66f4\u4e3a\u590d\u6742\u3002 \u4e00\u3001\u5185\u5b58\u56de\u6536 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[10],"tags":[175,176,61],"class_list":["post-610","post","type-post","status-publish","format-standard","hentry","category-vmware-computer-2","tag-memory","tag-resource","tag-vmware"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/paOwEq-9Q","_links":{"self":[{"href":"https:\/\/www.yaoge123.com\/blog\/wp-json\/wp\/v2\/posts\/610","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.yaoge123.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.yaoge123.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.yaoge123.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.yaoge123.com\/blog\/wp-json\/wp\/v2\/comments?post=610"}],"version-history":[{"count":13,"href":"https:\/\/www.yaoge123.com\/blog\/wp-json\/wp\/v2\/posts\/610\/revisions"}],"predecessor-version":[{"id":616,"href":"https:\/\/www.yaoge123.com\/blog\/wp-json\/wp\/v2\/posts\/610\/revisions\/616"}],"wp:attachment":[{"href":"https:\/\/www.yaoge123.com\/blog\/wp-json\/wp\/v2\/media?parent=610"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.yaoge123.com\/blog\/wp-json\/wp\/v2\/categories?post=610"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.yaoge123.com\/blog\/wp-json\/wp\/v2\/tags?post=610"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}