{"id":885,"date":"2014-07-07T13:44:50","date_gmt":"2014-07-07T11:44:50","guid":{"rendered":"http:\/\/elkano.org\/blog\/?p=885"},"modified":"2014-08-14T12:37:01","modified_gmt":"2014-08-14T10:37:01","slug":"usrsbinirqbalance-irq-affinity_hint-subset-empty","status":"publish","type":"post","link":"https:\/\/elkano.org\/blog\/usrsbinirqbalance-irq-affinity_hint-subset-empty\/","title":{"rendered":"\/usr\/sbin\/irqbalance: irq X affinity_hint subset empty"},"content":{"rendered":"<p>&nbsp;<\/p>\n<p>I found these messages\u00a0 in my Ubuntu 14.04 server filling the syslog:<\/p>\n<p>&nbsp;<\/p>\n<pre class=\"brush: text; gutter: false\">Jul 4 14:49:14 h80-stack01 \/usr\/sbin\/irqbalance: irq 121 affinity_hint subset empty\r\nJul 4 14:49:14 h80-stack01 \/usr\/sbin\/irqbalance: irq 122 affinity_hint subset empty\r\nJul 4 14:49:14 h80-stack01 \/usr\/sbin\/irqbalance: irq 123 affinity_hint subset empty\r\nJul 4 14:49:14 h80-stack01 \/usr\/sbin\/irqbalance: irq 124 affinity_hint subset empty\r\nJul 4 14:49:14 h80-stack01 \/usr\/sbin\/irqbalance: irq 125 affinity_hint subset empty\r\nJul 4 14:49:14 h80-stack01 \/usr\/sbin\/irqbalance: irq 126 affinity_hint subset empty\r\nJul 4 14:49:14 h80-stack01 \/usr\/sbin\/irqbalance: irq 133 affinity_hint subset empty\r\nJul 4 14:49:14 h80-stack01 \/usr\/sbin\/irqbalance: irq 134 affinity_hint subset empty\r\nJul 4 14:49:14 h80-stack01 \/usr\/sbin\/irqbalance: irq 135 affinity_hint subset empty\r\nJul 4 14:49:14 h80-stack01 \/usr\/sbin\/irqbalance: irq 136 affinity_hint subset empty\r\nJul 4 14:49:14 h80-stack01 \/usr\/sbin\/irqbalance: irq 137 affinity_hint subset empty\r\nJul 4 14:49:14 h80-stack01 \/usr\/sbin\/irqbalance: irq 138 affinity_hint subset empty\r\nJul 4 14:49:14 h80-stack01 \/usr\/sbin\/irqbalance: irq 146 affinity_hint subset empty\r\nJul 4 14:49:14 h80-stack01 \/usr\/sbin\/irqbalance: irq 147 affinity_hint subset empty\r\nJul 4 14:49:14 h80-stack01 \/usr\/sbin\/irqbalance: irq 148 affinity_hint subset empty\r\nJul 4 14:49:14 h80-stack01 \/usr\/sbin\/irqbalance: irq 149 affinity_hint subset empty\r\nJul 4 14:49:14 h80-stack01 \/usr\/sbin\/irqbalance: irq 150 affinity_hint subset empty\r\nJul 4 14:49:14 h80-stack01 \/usr\/sbin\/irqbalance: irq 151 affinity_hint subset empty\r\nJul 4 14:49:14 h80-stack01 \/usr\/sbin\/irqbalance: irq 158 affinity_hint subset empty\r\nJul 4 14:49:14 h80-stack01 \/usr\/sbin\/irqbalance: irq 159 affinity_hint subset empty\r\nJul 4 14:49:14 h80-stack01 \/usr\/sbin\/irqbalance: irq 160 affinity_hint subset empty\r\nJul 4 14:49:14 h80-stack01 \/usr\/sbin\/irqbalance: irq 161 affinity_hint subset empty\r\nJul 4 14:49:14 h80-stack01 \/usr\/sbin\/irqbalance: irq 162 affinity_hint subset empty\r\nJul 4 14:49:14 h80-stack01 \/usr\/sbin\/irqbalance: irq 163 affinity_hint subset empty<\/pre>\n<p>Seems to be a bug <a href=\"https:\/\/bugs.launchpad.net\/ubuntu\/+source\/irqbalance\/+bug\/1328556\" target=\"_blank\">reported<\/a> in Ubuntu, to avoid it, I followed these steps:<\/p>\n<p>Edit file<em> \/etc\/init\/irqbalance.conf<\/em> and change the line<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-linenumbers=\"false\" data-enlighter-theme=\"enlighter\" data-enlighter-language=\"null\">exec \/usr\/sbin\/irqbalance $DOPTIONS<\/pre>\n<p>for<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-linenumbers=\"false\" data-enlighter-theme=\"enlighter\" data-enlighter-language=\"null\">exec \/usr\/sbin\/irqbalance $OPTIONS $DOPTIONS<\/pre>\n<p>Edit \/etc\/default\/irqbalance and add this line:<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-linenumbers=\"false\" data-enlighter-theme=\"enlighter\" data-enlighter-language=\"null\">OPTIONS=&quot;--hintpolicy=ignore&quot;<\/pre>\n<p>The file should look like this:<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-linenumbers=\"false\" data-enlighter-theme=\"enlighter\" data-enlighter-language=\"null\">#Configuration for the irqbalance daemon\r\n\r\n#Should irqbalance be enabled?\r\nENABLED=&quot;1&quot;\r\n#Balance the IRQs only once?\r\nONESHOT=&quot;0&quot;\r\nOPTIONS=&quot;--hintpolicy=ignore&quot;<\/pre>\n<p>Finally restart irqbalance service:<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-linenumbers=\"false\" data-enlighter-theme=\"enlighter\" data-enlighter-language=\"null\">$ sudo service irqbalance restart<\/pre>\n<p>If the service restart does not work try rebooting machine.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>&nbsp; I found these messages\u00a0 in my Ubuntu 14.04 server filling the syslog: &nbsp; Jul 4 14:49:14 h80-stack01 \/usr\/sbin\/irqbalance: irq 121 affinity_hint subset empty Jul 4 14:49:14 h80-stack01 \/usr\/sbin\/irqbalance: irq 122 affinity_hint subset empty Jul 4 14:49:14 h80-stack01 \/usr\/sbin\/irqbalance: irq 123 affinity_hint subset empty Jul 4 14:49:14 h80-stack01 \/usr\/sbin\/irqbalance: irq 124 affinity_hint subset empty Jul [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[3],"tags":[125,124],"_links":{"self":[{"href":"https:\/\/elkano.org\/blog\/wp-json\/wp\/v2\/posts\/885"}],"collection":[{"href":"https:\/\/elkano.org\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/elkano.org\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/elkano.org\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/elkano.org\/blog\/wp-json\/wp\/v2\/comments?post=885"}],"version-history":[{"count":9,"href":"https:\/\/elkano.org\/blog\/wp-json\/wp\/v2\/posts\/885\/revisions"}],"predecessor-version":[{"id":901,"href":"https:\/\/elkano.org\/blog\/wp-json\/wp\/v2\/posts\/885\/revisions\/901"}],"wp:attachment":[{"href":"https:\/\/elkano.org\/blog\/wp-json\/wp\/v2\/media?parent=885"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/elkano.org\/blog\/wp-json\/wp\/v2\/categories?post=885"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/elkano.org\/blog\/wp-json\/wp\/v2\/tags?post=885"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}