{"id":296,"date":"2013-04-08T01:50:54","date_gmt":"2013-04-08T05:50:54","guid":{"rendered":"http:\/\/blog.fritzhardy.com\/?p=296"},"modified":"2013-09-25T04:44:14","modified_gmt":"2013-09-25T08:44:14","slug":"fedora-upgrade-f17-f18","status":"publish","type":"post","link":"https:\/\/blog.fritzhardy.com\/?p=296","title":{"rendered":"Fedora Upgrade: F17 -> F18"},"content":{"rendered":"<p>The new <a href=\"http:\/\/fedoraproject.org\/wiki\/FedUp\" title=\"fedup\">fedup<\/a> process completed my <a href=\"https:\/\/blog.fritzhardy.com\/?p=27\" title=\"upgrade\">upgrade<\/a> to Fedora 18 with no issues a couple of months ago.  After the normal minor wrangling to get four monitors working again, I immediately began experiencing a more serious issue: persistent oom-killer, typically a few hours after boot and despite plenty of memory.<\/p>\n<p>Oom-killer continued to target various aspects of X, so trying to rule things out, I tried different desktop environments.  Unfortunately, it has persisted across XFCE, LXDE, and KDE.  All attempts at isolating a single problematic application have come up empty.  A decent resource on tracing memory issues like this is <a href=\"http:\/\/bl0rg.krunch.be\/oom-frag.html\">http:\/\/bl0rg.krunch.be\/oom-frag.html<\/a>, which analysis points to fragmentation, but in my case I seem to be exhausting DMA memory.  I created a <a href=\"https:\/\/bugzilla.redhat.com\/show_bug.cgi?id=915936\">bug<\/a> tracking the issue.<\/p>\n<pre>\r\nvm.panic_on_oom = 1\r\nkernel.panic = 10\r\n<\/pre>\n<p>I had to resort to the above sysctl.conf, with further mitigation being to reboot at the beginning and end of the day, leaving the system in runlevel 3 when not in use.  Barely tolerable.  My least successful upgrade.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The new fedup process completed my upgrade to Fedora 18 with no issues a couple of months ago. After the normal minor wrangling to get four monitors working again, I immediately began experiencing a more serious issue: persistent oom-killer, typically a few hours after boot and despite plenty of memory. Oom-killer continued to target various [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[],"class_list":["post-296","post","type-post","status-publish","format-standard","hentry","category-technology"],"_links":{"self":[{"href":"https:\/\/blog.fritzhardy.com\/index.php?rest_route=\/wp\/v2\/posts\/296","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.fritzhardy.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.fritzhardy.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.fritzhardy.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.fritzhardy.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=296"}],"version-history":[{"count":8,"href":"https:\/\/blog.fritzhardy.com\/index.php?rest_route=\/wp\/v2\/posts\/296\/revisions"}],"predecessor-version":[{"id":311,"href":"https:\/\/blog.fritzhardy.com\/index.php?rest_route=\/wp\/v2\/posts\/296\/revisions\/311"}],"wp:attachment":[{"href":"https:\/\/blog.fritzhardy.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=296"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.fritzhardy.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=296"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.fritzhardy.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=296"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}