{"id":797,"date":"2014-11-17T10:00:42","date_gmt":"2014-11-17T09:00:42","guid":{"rendered":"http:\/\/www.virtualementvotre.ch\/blog\/?p=797"},"modified":"2014-11-12T03:37:04","modified_gmt":"2014-11-12T02:37:04","slug":"performances-des-cartes-virtuelles","status":"publish","type":"post","link":"https:\/\/www.virtualementvotre.ch\/blog\/2014\/11\/17\/performances-des-cartes-virtuelles\/","title":{"rendered":"Performances des cartes virtuelles"},"content":{"rendered":"<p>Bonjour,<\/p>\n<p>Lors de mes audits et workshops, un des points que je contr\u00f4le, est le type de carte virtuelle, configur\u00e9 dans les VMs.<\/p>\n<p>Pour m\u2019aider, <a title=\"RVtools\" href=\"http:\/\/www.virtualementvotre.ch\/blog\/tools\/\" target=\"_blank\">RVTools<\/a>, \u00e9videmment, facile d\u2019utilisation, il permet un inventaire facile et remonte les informations importantes d\u2019une infrastructure vSphere.<\/p>\n<p><a href=\"https:\/\/i0.wp.com\/www.virtualementvotre.ch\/blog\/wp-content\/uploads\/2014\/11\/RVtool_vNIC.png\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" class=\"alignleft size-full wp-image-801\" src=\"https:\/\/i0.wp.com\/www.virtualementvotre.ch\/blog\/wp-content\/uploads\/2014\/11\/RVtool_vNIC.png?resize=530%2C451\" alt=\"RVtool_vNIC\" width=\"530\" height=\"451\" srcset=\"https:\/\/i0.wp.com\/www.virtualementvotre.ch\/blog\/wp-content\/uploads\/2014\/11\/RVtool_vNIC.png?w=551&amp;ssl=1 551w, https:\/\/i0.wp.com\/www.virtualementvotre.ch\/blog\/wp-content\/uploads\/2014\/11\/RVtool_vNIC.png?resize=300%2C255&amp;ssl=1 300w\" sizes=\"auto, (max-width: 530px) 100vw, 530px\" \/><\/a><\/p>\n<p>Commen\u00e7ons par un petit <strong>r\u00e9capitulatif des cartes virtuelles<\/strong>\u00a0:<\/p>\n<p>Il existe plusieurs types de <strong>vNICs\u00a0<\/strong>: les <strong>\u00e9mulations<\/strong> et les <strong>paravirtualis\u00e9es<\/strong><\/p>\n<p>L\u2019historique est la <strong>vlance<\/strong>, qui est l\u2019\u00e9mulation de la carte <strong>AMD 79C970 PCnet32<\/strong>&#8211; LANCE NIC, qui \u00e9tait vue comme une carte <strong>10 Mbps<\/strong>. Elle avait l\u2019avantage d\u2019\u00eatre reconnu par la plus tard des (vieux) OS.<\/p>\n<p>J\u2019avoue en trouver encore, dans de tr\u00e8s vieilles VMs\u2026 La remplacer par une carte <strong>VMXNET3<\/strong>, am\u00e9liore sensiblement les performances de la VM.<\/p>\n<p><strong>VMXNET<\/strong>, premi\u00e8re carte d\u00e9velopp\u00e9e pat VMware avec l&#8217;<strong>ESX 2<\/strong> , elle exige les <strong>VMware Tools<\/strong> et offre d\u00e9j\u00e0 une bande passante de <strong>1 Gbps<\/strong>.<\/p>\n<p><strong>E1000<\/strong>, qui est l\u2019\u00e9mulation de la carte<strong> Intel 82545EM Gigabit Ethernet<\/strong>, reconnu par passablement d\u2019OS r\u00e9cents. C\u2019est une des cartes que l\u2019on retrouve la plus dans les audits, car elle est propos\u00e9e par d\u00e9faut, lors de la cr\u00e9ation de VM. Beaucoup utilis\u00e9e pour les <strong>OS Linux<\/strong>.<\/p>\n<p>Plus r\u00e9cemment, on a vu apparaitre l\u2019<strong>E1000e<\/strong> qui est l\u2019\u00e9mulation de la carte<strong> Intel Gigabit NIC 82574<\/strong> apparue avec le <strong>Virtual Hardware version 8 et vSphere 5<\/strong>. Propos\u00e9e par d\u00e9faut pour <strong>Windows 8 et Windows 2012<\/strong><\/p>\n<p><strong>VMXNET 2 (Enhanced)<\/strong>: qui est l\u2019extension de la <strong>VMXNET<\/strong> et qui offre de meilleures performances, le support du<strong> jumbo frames<\/strong> et <strong>hardware offloads<\/strong>. Apparue avec la version <strong>ESXi\/ESX 3.5<\/strong>, elle exige \u00e9galement les<strong> VMware tools<\/strong>.<br \/>\nElle \u00e9tait d\u00e9di\u00e9e principalement pour les OS 32- et 64-bit de <strong>Microsoft Windows 2003<\/strong> (Enterprise, Datacenter, and Standard Editions).<\/p>\n<p>Finalement le <strong>VMXNET 3<\/strong>, qui est la <strong>derni\u00e8re g\u00e9n\u00e9ration<\/strong> des cartes r\u00e9seaux <strong>paravirtualis\u00e9es<\/strong> ajoutant de la performance. Elle support la <strong>multi-queue, IPv6 offloads et MSI\/MSI-X interrupt delivery<\/strong>, plus les fonctionnalit\u00e9s d\u00e9j\u00e0 support\u00e9es, dans le <strong>VMXNET2<\/strong>. Une fois de plus, il faut imp\u00e9rativement les <strong>VMware Tools<\/strong> et \u00e0 jour, naturellement\u00a0! Elle est reconnue comme une carte<strong> 10Gbps<br \/>\n<\/strong>Elle est support\u00e9e par passablement d\u2019OS, tel que <strong>Windows, Red Hat, Suse, Asianux, Debian, Ubuntu, Sun Solaris et Oracle Linux.<\/strong><\/p>\n<p>Maintenant, dans un environnement ou les vSwitch ont des <strong>uplink en 1 Gbps<\/strong>, cela vaut-il la peine de mettre du <strong>VMXNET3\u00a0<\/strong>?<\/p>\n<p>Rien ne vaut un petit test r\u00e9el\u2026<\/p>\n<p>J\u2019ai donc utilis\u00e9 <a title=\"iperf\" href=\"https:\/\/iperf.fr\/\" target=\"_blank\">iperf<\/a>, entre deux serveurs <strong>Windows 2012 R2<\/strong>, afin de mesurer les \u00e9ventuelles diff\u00e9rences de bande passante, selon les types cartes et j\u2019ai jou\u00e9 le m\u00eame protocole de mesure, entre les deux VMs, avec les cartes <strong>e1000, e1000e et la VMXNET3<\/strong>.<\/p>\n<p><a href=\"https:\/\/i0.wp.com\/www.virtualementvotre.ch\/blog\/wp-content\/uploads\/2014\/11\/iperf_vmxnet3.png\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" class=\"alignleft size-large wp-image-802\" src=\"https:\/\/i0.wp.com\/www.virtualementvotre.ch\/blog\/wp-content\/uploads\/2014\/11\/iperf_vmxnet3-1024x572.png?resize=530%2C296\" alt=\"iperf_vmxnet3\" width=\"530\" height=\"296\" srcset=\"https:\/\/i0.wp.com\/www.virtualementvotre.ch\/blog\/wp-content\/uploads\/2014\/11\/iperf_vmxnet3.png?resize=1024%2C572&amp;ssl=1 1024w, https:\/\/i0.wp.com\/www.virtualementvotre.ch\/blog\/wp-content\/uploads\/2014\/11\/iperf_vmxnet3.png?resize=300%2C167&amp;ssl=1 300w, https:\/\/i0.wp.com\/www.virtualementvotre.ch\/blog\/wp-content\/uploads\/2014\/11\/iperf_vmxnet3.png?w=1057&amp;ssl=1 1057w\" sizes=\"auto, (max-width: 530px) 100vw, 530px\" \/><\/a><\/p>\n<p>Il est clair qu\u2019\u00e0 chaque fois, j\u2019ai satur\u00e9 le lien 1 Gbps et donc pas de plus-value \u00e0 ce niveau.<\/p>\n<p>Mais qu\u2019en est-il des <strong>communications intra ESXi\u00a0<\/strong>? Ceci, pour autant que l\u2019on reste en L2.<\/p>\n<p>J\u2019ai donc d\u00e9plac\u00e9 mes VMs sur le m\u00eame ESXi et rejou\u00e9 le protocole.<\/p>\n<p><a href=\"https:\/\/i0.wp.com\/www.virtualementvotre.ch\/blog\/wp-content\/uploads\/2014\/11\/iperf_vmxnet3_intraESXi2.png\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" class=\"alignleft size-large wp-image-803\" src=\"https:\/\/i0.wp.com\/www.virtualementvotre.ch\/blog\/wp-content\/uploads\/2014\/11\/iperf_vmxnet3_intraESXi2-1024x529.png?resize=530%2C274\" alt=\"iperf_vmxnet3_intraESXi2\" width=\"530\" height=\"274\" srcset=\"https:\/\/i0.wp.com\/www.virtualementvotre.ch\/blog\/wp-content\/uploads\/2014\/11\/iperf_vmxnet3_intraESXi2.png?resize=1024%2C529&amp;ssl=1 1024w, https:\/\/i0.wp.com\/www.virtualementvotre.ch\/blog\/wp-content\/uploads\/2014\/11\/iperf_vmxnet3_intraESXi2.png?resize=300%2C155&amp;ssl=1 300w, https:\/\/i0.wp.com\/www.virtualementvotre.ch\/blog\/wp-content\/uploads\/2014\/11\/iperf_vmxnet3_intraESXi2.png?w=1103&amp;ssl=1 1103w\" sizes=\"auto, (max-width: 530px) 100vw, 530px\" \/><\/a><\/p>\n<p>Et l\u00e0, effectivement, on trouve une nette am\u00e9lioration avec les vNICs paravirtualis\u00e9es.<\/p>\n<p>Voici les resultats:<\/p>\n<table width=\"385\">\n<tbody>\n<tr>\n<td width=\"64\"><\/td>\n<td width=\"64\"><\/td>\n<td width=\"119\"><strong>entre ESXi<\/strong><\/td>\n<td width=\"139\"><strong>intra ESXi<\/strong><\/td>\n<\/tr>\n<tr>\n<td width=\"64\"><strong>e1000<\/strong><\/td>\n<td width=\"64\"><\/td>\n<td width=\"119\">935 Mbits\/sec<\/td>\n<td width=\"139\">4.47 Gbits\/sec<\/td>\n<\/tr>\n<tr>\n<td width=\"64\"><strong>e1000e<\/strong><\/td>\n<td width=\"64\"><\/td>\n<td width=\"119\">926 Mbits\/sec<\/td>\n<td width=\"139\">4.47 Gbits\/sec<\/td>\n<\/tr>\n<tr>\n<td width=\"64\"><strong>VMXNET3<\/strong><\/td>\n<td width=\"64\"><\/td>\n<td width=\"119\">917 Mbits\/sec<\/td>\n<td width=\"139\">5.65 Gbits\/sec<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>&nbsp;<\/p>\n<p>On retrouve \u00e9galement ces diff\u00e9rences, lors de communication, entre des ESXi, avec des uplink 10Gbps.<\/p>\n<p>En r\u00e9sum\u00e9\u00a0:<strong> Utilisez les cartes virtuelles VMXNET3<\/strong>, dans tous les cas et si vous \u00eates avec des uplinks 1 Gbps et une application gourmande en bande passante, une petite <strong>r\u00e8gle d\u2019affinit\u00e9, dans votre DRS,<\/strong> vous offrira de meilleures performances. Mais attention, n\u2019en faites pas trop, au risque de brider la r\u00e9partition des ressources et le DRS.<\/p>\n<p>Bonne recherche de performance.<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Bonjour, Lors de mes audits et workshops, un des points que je contr\u00f4le, est le type de carte virtuelle, configur\u00e9 dans les VMs. Pour m\u2019aider, RVTools, \u00e9videmment, facile d\u2019utilisation, il permet un inventaire facile et remonte les informations importantes d\u2019une infrastructure vSphere. Commen\u00e7ons par un petit r\u00e9capitulatif des cartes virtuelles\u00a0: Il existe plusieurs types de vNICs\u00a0: les \u00e9mulations et les <a class=\"more-link\" href=\"https:\/\/www.virtualementvotre.ch\/blog\/2014\/11\/17\/performances-des-cartes-virtuelles\/\">Continue reading <span class=\"screen-reader-text\">  Performances des cartes virtuelles<\/span><span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":802,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_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":[9,3],"tags":[535,536,538,533,534,537,528,525,539,529,540,530,531,532,527,541,526],"class_list":["post-797","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-virtualisation","category-vmware","tag-10-gbps","tag-1gbps","tag-bandwith","tag-e1000","tag-e1000e","tag-intra-esxi-communication","tag-iperf","tag-performances-des-cartes-virtuelles","tag-uplink","tag-vlance","tag-vmnic","tag-vmxnet","tag-vmxnet2","tag-vmxnet3","tag-vnic","tag-vnics-best-practice","tag-vnics-performance"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.4 - aioseo.com -->\n\t<meta name=\"description\" content=\"Bonjour, Lors de mes audits et workshops, un des points que je contr\u00f4le, est le type de carte virtuelle, configur\u00e9 dans les VMs. Pour m\u2019aider, RVTools, \u00e9videmment, facile d\u2019utilisation, il permet un inventaire facile et remonte les informations importantes d\u2019une infrastructure vSphere. 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Les proxy backup peuvent aller chercher les disques virtuels directement sur le share du NAS, sans devoir passer par les vAPI de VMware, qui ont souvent des probl\u00e8mes d\u2019authentifications et donc ne peuvent\u2026","rel":"","context":"In &quot;NUTANIX&quot;","block_context":{"text":"NUTANIX","link":"https:\/\/www.virtualementvotre.ch\/blog\/category\/nutanix\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.virtualementvotre.ch\/blog\/wp-content\/uploads\/2015\/11\/ProxyBackupConfig.png?fit=1040%2C835&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.virtualementvotre.ch\/blog\/wp-content\/uploads\/2015\/11\/ProxyBackupConfig.png?fit=1040%2C835&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.virtualementvotre.ch\/blog\/wp-content\/uploads\/2015\/11\/ProxyBackupConfig.png?fit=1040%2C835&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.virtualementvotre.ch\/blog\/wp-content\/uploads\/2015\/11\/ProxyBackupConfig.png?fit=1040%2C835&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":76,"url":"https:\/\/www.virtualementvotre.ch\/blog\/2011\/04\/03\/le-vaai-et-les-primitives\/","url_meta":{"origin":797,"position":2},"title":"Le VAAI et les primitives","author":"Cedric Megroz","date":"03\/04\/2011","format":false,"excerpt":"Depuis la version vSphere, VMware a offert la possibilit\u00e9 d\u2019utiliser diff\u00e9rentes vAPI notamment au niveau du stockage. Une des premi\u00e8res int\u00e9grations a \u00e9t\u00e9 celle de VCB (VMware Consolidate Backup), dans les logiciels de Backup, afin de sauvegarder les VMs au niveau du VMDK, et de permettre des full et file\u2026","rel":"","context":"In &quot;STOCKAGE&quot;","block_context":{"text":"STOCKAGE","link":"https:\/\/www.virtualementvotre.ch\/blog\/category\/stockage\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":122,"url":"https:\/\/www.virtualementvotre.ch\/blog\/2012\/02\/11\/backup-dinfrastructures-virtuelles\/","url_meta":{"origin":797,"position":3},"title":"Backup d&#8217;infrastructures virtuelles","author":"Cedric Megroz","date":"11\/02\/2012","format":false,"excerpt":"Bonjour, Afin de r\u00e9pondre \u00e0 une question sur le groupe Linkedin, voici une petite introduction aux solutions de backup d\u2019infrastructures virtuelles. \u00a0 Dans le cadre des backups d\u2019infrastructures virtuelles, il existe plusieurs possibilit\u00e9s qui vont d\u00e9pendre de votre architecture informatique et des contraintes l\u00e9gales. \u00a0 Traditionnellement, l\u2019agent du logiciel de\u2026","rel":"","context":"In &quot;STOCKAGE&quot;","block_context":{"text":"STOCKAGE","link":"https:\/\/www.virtualementvotre.ch\/blog\/category\/stockage\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.virtualementvotre.ch\/blog\/wp-content\/uploads\/2012\/02\/DGRM_vSphere_ConsolidatedBackup.gif?fit=350%2C267&ssl=1&resize=350%2C200","width":350,"height":200},"classes":[]},{"id":79,"url":"https:\/\/www.virtualementvotre.ch\/blog\/2011\/05\/25\/lanti-virus-dans-une-infrastructure-vmware\/","url_meta":{"origin":797,"position":4},"title":"L&#8217;anti-virus dans une infrastructure VMware","author":"Cedric Megroz","date":"25\/05\/2011","format":false,"excerpt":"\u00a0 vShield Endpoint La famille vShield (Plus r\u00e9cemment nomm\u00e9e VMware vCloud Networking and Security) s\u2019est passablement \u00e9toff\u00e9e avec la version vSphere 4.1. Premi\u00e8rement, le vShield Manager qui est l\u2019outil centralis\u00e9 permettant d\u2019activer et d\u2019installer les diff\u00e9rents \u00e9l\u00e9ments que compose la famille vShield. C\u2019est une simple VA Linux sous forme d\u2019ovf\u2026","rel":"","context":"In &quot;SECURITE&quot;","block_context":{"text":"SECURITE","link":"https:\/\/www.virtualementvotre.ch\/blog\/category\/securite\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.virtualgeek.ch\/blog\/wp-content\/uploads\/2011\/05\/VMsafeNetwork-300x211.png?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":105,"url":"https:\/\/www.virtualementvotre.ch\/blog\/2011\/10\/12\/windows-server-2012-hyper-v-overview\/","url_meta":{"origin":797,"position":5},"title":"Windows Server 2012 Hyper-V Overview","author":"Cedric Megroz","date":"12\/10\/2011","format":false,"excerpt":"Bonjour, \u00a0 Suite \u00e0 la Microsoft BUILD conf\u00e9rence, Microsoft pr\u00e9sente, \u00e0 travers diff\u00e9rents m\u00e9dias, la nouvelle version de Windows 2012 (pr\u00e9sent\u00e9 \u00e0 ce moment l\u00e0 sous Windows 8) \u00a0 \u00a0 Cette version qui tend, \u00e9videmment, vers le cloud, met la solution Hyper-V en-avant. 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