{"id":26563,"date":"2022-09-14T23:57:00","date_gmt":"2022-09-14T21:57:00","guid":{"rendered":"http:\/\/159.69.82.204\/win\/?p=26563"},"modified":"2022-09-14T23:57:00","modified_gmt":"2022-09-14T21:57:00","slug":"vmware-esxi-retbleed-fixes-verursachen-70-leistungsverlust-in-linux-vms-mit-kernel-5-19","status":"publish","type":"post","link":"https:\/\/borncity.com\/win\/2022\/09\/14\/vmware-esxi-retbleed-fixes-verursachen-70-leistungsverlust-in-linux-vms-mit-kernel-5-19\/","title":{"rendered":"VMware ESXi: Retbleed fixes cause 70% performance loss in Linux VMs running kernel 5.19"},"content":{"rendered":"<p><img loading=\"lazy\" decoding=\"async\" style=\"float: left; margin: 0px 10px 0px 0px; display: inline\" src=\"https:\/\/www.borncity.com\/blog\/wp-content\/uploads\/2015\/11\/Linux.jpg\" width=\"64\" align=\"left\" height=\"76\">In performance regression testing, VMware testers found a severe performance drop for Linux guests when running kernel 5.19 in a VMware ESXi virtual machine with the Retbleed fixes installed. The degradation was up to 70% for computing, up to 30% in networking, and up to 13% in memory usage. Details can be found in <a href=\"https:\/\/lkml.iu.edu\/hypermail\/linux\/kernel\/2209.1\/02248.html\" target=\"_blank\" rel=\"noopener\">this post<\/a>. (<a href=\"https:\/\/www.bleepingcomputer.com\/news\/linux\/vmware-70-percent-drop-in-linux-esxi-vm-performance-with-retbleed-fixes\/\" target=\"_blank\" rel=\"noopener\">via<\/a>)<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In performance regression testing, VMware testers found a severe performance drop for Linux guests when running kernel 5.19 in a VMware ESXi virtual machine with the Retbleed fixes installed. The degradation was up to 70% for computing, up to 30% &hellip; <a href=\"https:\/\/borncity.com\/win\/2022\/09\/14\/vmware-esxi-retbleed-fixes-verursachen-70-leistungsverlust-in-linux-vms-mit-kernel-5-19\/\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[921],"tags":[637,651],"class_list":["post-26563","post","type-post","status-publish","format-standard","hentry","category-linux","tag-linux","tag-virtualization"],"_links":{"self":[{"href":"https:\/\/borncity.com\/win\/wp-json\/wp\/v2\/posts\/26563","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/borncity.com\/win\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/borncity.com\/win\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/borncity.com\/win\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/borncity.com\/win\/wp-json\/wp\/v2\/comments?post=26563"}],"version-history":[{"count":0,"href":"https:\/\/borncity.com\/win\/wp-json\/wp\/v2\/posts\/26563\/revisions"}],"wp:attachment":[{"href":"https:\/\/borncity.com\/win\/wp-json\/wp\/v2\/media?parent=26563"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/borncity.com\/win\/wp-json\/wp\/v2\/categories?post=26563"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/borncity.com\/win\/wp-json\/wp\/v2\/tags?post=26563"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}