{"id":175,"date":"2007-10-15T07:00:20","date_gmt":"2007-10-15T12:00:20","guid":{"rendered":"http:\/\/www.nynaeve.net\/?p=175"},"modified":"2019-12-13T17:45:44","modified_gmt":"2019-12-13T22:45:44","slug":"things-that-make-you-go-hmm","status":"publish","type":"post","link":"http:\/\/www.nynaeve.net\/?p=175","title":{"rendered":"Things that make you go &#8220;hmm&#8221;&#8230;"},"content":{"rendered":"<p>Evidently, a couple nights ago at 2:30am or so, my datacenter box grew an extra ~1GB of RAM for about 10 minutes:<\/p>\n<p><a title=\"Myrelle - Physical Memory Usage\" href=\"http:\/\/www.nynaeve.net\/images\/myrelle_phys_mem.PNG\"><img alt=\"Myrelle - Physical Memory Usage\" src=\"http:\/\/www.nynaeve.net\/images\/myrelle_phys_mem.PNG\"\/><\/a><\/p>\n<p>Unfortunately, the magical mystery RAM (for lack of a better word) disappeared after about 10 minutes.  Too bad, more RAM would have always been welcome&#8230;<\/p>\n<p>It seems that there&#8217;s some sort of strange bug with either Cacti or the SNMP utilities that it is using to query data, which occurs when the box is under load.  At the time when the anomalous measurements were returned, there was a transitory jump in load average on the monitoring system (if the Cacti graphs are to be believed this time around):<\/p>\n<p><a title=\"Valera - Physical Memory Usage\" href=\"http:\/\/www.nynaeve.net\/images\/valera_load_av.PNG\"><img alt=\"Valera - Load Average\" src=\"http:\/\/www.nynaeve.net\/images\/valera_load_av.PNG\"\/><\/a><\/p>\n<p>(Did I mention that things have a general tendency to break in strange and mysterious ways while in my presence?)<\/p>\n<p>Anyways, now I have to wonder how reliable my other Cacti graphs are after this little discovery.  This time, at least, the discrepancy was fairly obvious&#8230;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Evidently, a couple nights ago at 2:30am or so, my datacenter box grew an extra ~1GB of RAM for about 10 minutes: Unfortunately, the magical mystery RAM (for lack of a better word) disappeared after about 10 minutes. Too bad, more RAM would have always been welcome&#8230; It seems that there&#8217;s some sort of strange [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[6],"tags":[],"_links":{"self":[{"href":"http:\/\/www.nynaeve.net\/index.php?rest_route=\/wp\/v2\/posts\/175"}],"collection":[{"href":"http:\/\/www.nynaeve.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.nynaeve.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.nynaeve.net\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.nynaeve.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=175"}],"version-history":[{"count":1,"href":"http:\/\/www.nynaeve.net\/index.php?rest_route=\/wp\/v2\/posts\/175\/revisions"}],"predecessor-version":[{"id":546,"href":"http:\/\/www.nynaeve.net\/index.php?rest_route=\/wp\/v2\/posts\/175\/revisions\/546"}],"wp:attachment":[{"href":"http:\/\/www.nynaeve.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=175"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.nynaeve.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=175"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.nynaeve.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=175"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}