I had been struggling for some considerable time with guest (Win10) performance issues with VMware – including application (Photoshop CS6) ‘freezing’ for a time, and overall very sluggish responses..<\/p>\n
I had found several articles that suggested cause\/effect\/fix for this, but none really worked..<\/p>\n
I made changes to control khugepaged: – and added ‘ transparent_hugepage=never<\/strong><\/span> ‘ to the kernel command line..<\/p>\n – but this only worked for a while after host reboot, and then the guest freezing started again.<\/p>\n I then found another suggestion, regarding kcompactd0<\/strong>, and made the following changes (as root): # Fix problem when vmware is affected by kcompactd0.<\/strong><\/span> After all these changes, the freezing problem seems to have – finally – disappeared..<\/p>\n It should be mentioned that Win10 also may need ‘power\/performance’ settings altered to prevent ‘disk sleep’ issues etc., but that is outside the scope of a Linux article!..<\/p>\n There may be other workarounds\/fixes, but these are the ones that worked for me..<\/p>\n Acknowledgements… Robert Gadsdon. January 20th, 2022.<\/em><\/p>\n","protected":false},"excerpt":{"rendered":" I had been struggling for some considerable time with guest (Win10) performance issues with VMware – including application (Photoshop CS6) ‘freezing’ for a time, and overall very sluggish responses.. I had found several articles that suggested cause\/effect\/fix for this, but none really worked.. I made changes to control khugepaged: …………………….. [root@rglinux820 ~]$ echo never | tee \/sys\/kernel\/mm\/transparent_hugepage\/defrag …<\/span> Continue reading →<\/span><\/a><\/p>\n","protected":false},"author":3,"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,"footnotes":""},"categories":[11,14,15,19,20,25],"tags":[163,2458,2460,2459,402],"class_list":["post-2997","post","type-post","status-publish","format-standard","hentry","category-hacks","category-kernel","category-linux-2","category-opinion","category-performance-2","category-vmware","tag-fixes","tag-guset-freeze","tag-kcompactd0","tag-transparent_hugepage","tag-vmware-2"],"_links":{"self":[{"href":"https:\/\/rglinuxtech.com\/index.php?rest_route=\/wp\/v2\/posts\/2997","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/rglinuxtech.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/rglinuxtech.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/rglinuxtech.com\/index.php?rest_route=\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/rglinuxtech.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2997"}],"version-history":[{"count":1,"href":"https:\/\/rglinuxtech.com\/index.php?rest_route=\/wp\/v2\/posts\/2997\/revisions"}],"predecessor-version":[{"id":2998,"href":"https:\/\/rglinuxtech.com\/index.php?rest_route=\/wp\/v2\/posts\/2997\/revisions\/2998"}],"wp:attachment":[{"href":"https:\/\/rglinuxtech.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2997"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/rglinuxtech.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2997"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/rglinuxtech.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2997"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\n……………………..<\/span><\/strong>
\n[root@rglinux820 ~]$ echo never | tee \/sys\/kernel\/mm\/transparent_hugepage\/defrag<\/span><\/strong>
\nnever<\/span><\/strong>
\n[root@rglinux820 ~]$ echo 0 | tee \/sys\/kernel\/mm\/transparent_hugepage\/khugepaged\/defrag<\/span><\/strong>
\n0<\/span><\/strong>
\n[root@rglinux820 ~]$ cat \/sys\/kernel\/mm\/transparent_hugepage\/defrag<\/span><\/strong>
\nalways defer defer+madvise madvise [never]<\/span><\/strong><\/p>\n
\n$ echo 0 > \/proc\/sys\/vm\/compaction_proactiveness<\/strong><\/span>
\nand (for a permanent fix) added the following to \/etc\/sysctl.conf<\/strong>:<\/p>\n
\nvm.compaction_proactiveness=0<\/strong><\/span><\/p>\n
\nThe original articles I found are here – and one has been updated to cover a potential Win11 guest issue:
\nhttps:\/\/unix.stackexchange.com\/questions\/458893\/vmware-on-linux-host-causes-regular-freezes<\/a>
\nand
\nhttps:\/\/gist.github.com\/2E0PGS\/2560d054819843d1e6da76ae57378989<\/a> (scroll down to the comments by neves-0<\/em> and gene-olsen<\/em> for the kcompactd0 fix..)<\/p>\n