{"id":601,"date":"2012-01-12T21:52:00","date_gmt":"2012-01-12T21:52:00","guid":{"rendered":"http:\/\/zensonic.dk\/?p=601"},"modified":"2017-04-09T10:03:04","modified_gmt":"2017-04-09T10:03:04","slug":"hp-ux-filecache_max-tunable-and-system-unresponsiveness","status":"publish","type":"post","link":"https:\/\/zensonic.dk\/?p=601","title":{"rendered":"HP-UX filecache_max tunable and system unresponsiveness"},"content":{"rendered":"<p>During work today I tweaked the online tunable called filecache_max on an HP-UX 11.31 box. From 1 to 5%. Went fine. I tested what I needed to test and then decided to lower the value again. So I ran kctune filecache_max=2% and then nothing.<\/p>\n<p>Everything(!) stopped working. Well, the system could be pinged, but the other cluster node started to complain about its sister disapperaing. I littlerally got cold hands. This was supposed to be an online operation. I waited for 4 very very long minutes (being a computer professional have learned me to wait for stuff to finish).<\/p>\n<p>After 4 minutes the system was back. Running as nothing had happened. Everything littlerally just froze up trying to reduce the filecache. I learnt it the hard way. Hope this post will prevent you from getting into the same kind of troubles.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>During work today I tweaked the online tunable called filecache_max on an HP-UX 11.31 box. From 1 to 5%. Went fine. I tested what I needed to test and then decided to lower the value again. So I ran kctune filecache_max=2% and then nothing. Everything(!) stopped working. Well, the system could be pinged, but the [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[10,6,3],"tags":[],"class_list":["post-601","post","type-post","status-publish","format-standard","hentry","category-hp-ux","category-unix","category-work"],"_links":{"self":[{"href":"https:\/\/zensonic.dk\/index.php?rest_route=\/wp\/v2\/posts\/601"}],"collection":[{"href":"https:\/\/zensonic.dk\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/zensonic.dk\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/zensonic.dk\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/zensonic.dk\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=601"}],"version-history":[{"count":0,"href":"https:\/\/zensonic.dk\/index.php?rest_route=\/wp\/v2\/posts\/601\/revisions"}],"wp:attachment":[{"href":"https:\/\/zensonic.dk\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=601"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/zensonic.dk\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=601"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/zensonic.dk\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=601"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}