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Update notes for 2018-01-31

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Alan Orth
2018-01-31 16:17:39 +02:00
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@ -92,7 +92,7 @@ Danny wrote to ask for help renewing the wildcard ilri.org certificate and I adv
<meta property="article:published_time" content="2018-01-02T08:35:54-08:00"/>
<meta property="article:modified_time" content="2018-01-29T12:25:30&#43;02:00"/>
<meta property="article:modified_time" content="2018-01-31T12:01:34&#43;02:00"/>
@ -194,9 +194,9 @@ Danny wrote to ask for help renewing the wildcard ilri.org certificate and I adv
"@type": "BlogPosting",
"headline": "January, 2018",
"url": "https://alanorth.github.io/cgspace-notes/2018-01/",
"wordCount": "7885",
"wordCount": "7940",
"datePublished": "2018-01-02T08:35:54-08:00",
"dateModified": "2018-01-29T12:25:30&#43;02:00",
"dateModified": "2018-01-31T12:01:34&#43;02:00",
"author": {
"@type": "Person",
"name": "Alan Orth"
@ -1761,15 +1761,26 @@ javax.ws.rs.WebApplicationException
<li>We need to start graphing the Tomcat sessions as well, though that requires JMX</li>
<li>Also, I wonder if I could disable the nightly Atmire thing</li>
<li>God, I don&rsquo;t know where this load is coming from</li>
<li>Since I bumped up the Tomcat threads from 200 to 400 the load on the server has been sustained at about 200%:</li>
<li>Since I bumped up the Tomcat threads from 200 to 400 the load on the server has been sustained at about 200% for almost a whole day:</li>
</ul>
<p><img src="/cgspace-notes/2018/01/cpu-week.png" alt="CPU usage week" /></p>
<ul>
<li>I should make separate database pools for the web applications and the API applications like REST and OAI</li>
<li>Ok, so this is interesting: I figured out how to get the MBean path to query Tomcat&rsquo;s activeSessions from JMX (using <code>munin-plugins-java</code>):</li>
</ul>
<pre><code># port=5400 ip=&quot;127.0.0.1&quot; /usr/bin/java -cp /usr/share/munin/munin-jmx-plugins.jar org.munin.plugin.jmx.Beans Catalina:type=Manager,context=/,host=localhost activeSessions
Catalina:type=Manager,context=/,host=localhost activeSessions 8
</code></pre>
<ul>
<li>If you connect to Tomcat in <code>jvisualvm</code> it&rsquo;s pretty obvious when you hover over the elements</li>
</ul>
<p><img src="/cgspace-notes/2018/01/jvisualvm-mbeans-path.png" alt="MBeans in JVisualVM" /></p>