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Add notes for 2018-01-12
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@ -516,3 +516,33 @@ db.url = jdbc:postgresql://localhost:5432/dspacetest?ApplicationName=dspaceDefau
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```
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- With that it is super easy to see where PostgreSQL connections are coming from in `pg_stat_activity`
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## 2018-01-12
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- I'm looking at the [DSpace 6.0 Install docs](https://wiki.duraspace.org/display/DSDOC6x/Installing+DSpace#InstallingDSpace-ServletEngine(ApacheTomcat7orlater,Jetty,CauchoResinorequivalent)) and notice they tweak the number of threads in their Tomcat connector:
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```
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<!-- Define a non-SSL HTTP/1.1 Connector on port 8080 -->
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<Connector port="8080"
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maxThreads="150"
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minSpareThreads="25"
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maxSpareThreads="75"
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enableLookups="false"
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redirectPort="8443"
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acceptCount="100"
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connectionTimeout="20000"
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disableUploadTimeout="true"
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URIEncoding="UTF-8"/>
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```
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- In Tomcat 8.5 the `maxThreads` defaults to 200 which is probably fine, but tweaking `minSpareThreads` could be good
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- I don't see a setting for `maxSpareThreads` in the docs so that might be an error
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- Looks like in Tomcat 8.5 the default URIEncoding for Connectors is UTF-8, so we don't need to specify that manually anymore: https://tomcat.apache.org/tomcat-8.5-doc/config/http.html
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-
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- Ooh, I just the `acceptorThreadCount` setting (in Tomcat 7 and 8.5):
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```
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The number of threads to be used to accept connections. Increase this value on a multi CPU machine, although you would never really need more than 2. Also, with a lot of non keep alive connections, you might want to increase this value as well. Default value is 1.
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```
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- That could be very interesting
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@ -38,7 +38,7 @@ COPY 54701
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<meta property="article:published_time" content="2017-11-02T09:37:54+02:00"/>
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<meta property="article:modified_time" content="2017-12-17T10:43:56+02:00"/>
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<meta property="article:modified_time" content="2018-01-12T06:07:03+02:00"/>
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@ -88,7 +88,7 @@ COPY 54701
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"url": "https://alanorth.github.io/cgspace-notes/2017-11/",
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"wordCount": "5428",
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"datePublished": "2017-11-02T09:37:54+02:00",
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"dateModified": "2017-12-17T10:43:56+02:00",
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"dateModified": "2018-01-12T06:07:03+02:00",
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"author": {
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"@type": "Person",
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"name": "Alan Orth"
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@ -92,7 +92,7 @@ Danny wrote to ask for help renewing the wildcard ilri.org certificate and I adv
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<meta property="article:published_time" content="2018-01-02T08:35:54-08:00"/>
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<meta property="article:modified_time" content="2018-01-11T10:42:35+02:00"/>
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<meta property="article:modified_time" content="2018-01-12T06:07:03+02:00"/>
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@ -194,9 +194,9 @@ Danny wrote to ask for help renewing the wildcard ilri.org certificate and I adv
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"@type": "BlogPosting",
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"headline": "January, 2018",
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"url": "https://alanorth.github.io/cgspace-notes/2018-01/",
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"wordCount": "2467",
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"wordCount": "2630",
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"datePublished": "2018-01-02T08:35:54-08:00",
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"dateModified": "2018-01-11T10:42:35+02:00",
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"dateModified": "2018-01-12T06:07:03+02:00",
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"author": {
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"@type": "Person",
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"name": "Alan Orth"
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@ -821,6 +821,40 @@ cache_alignment : 64
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<li>With that it is super easy to see where PostgreSQL connections are coming from in <code>pg_stat_activity</code></li>
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</ul>
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<h2 id="2018-01-12">2018-01-12</h2>
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<ul>
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<li>I’m looking at the <a href="https://wiki.duraspace.org/display/DSDOC6x/Installing+DSpace#InstallingDSpace-ServletEngine(ApacheTomcat7orlater,Jetty,CauchoResinorequivalent)">DSpace 6.0 Install docs</a> and notice they tweak the number of threads in their Tomcat connector:</li>
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</ul>
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<pre><code><!-- Define a non-SSL HTTP/1.1 Connector on port 8080 -->
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<Connector port="8080"
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maxThreads="150"
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minSpareThreads="25"
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maxSpareThreads="75"
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enableLookups="false"
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redirectPort="8443"
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acceptCount="100"
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connectionTimeout="20000"
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disableUploadTimeout="true"
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URIEncoding="UTF-8"/>
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</code></pre>
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<ul>
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<li>In Tomcat 8.5 the <code>maxThreads</code> defaults to 200 which is probably fine, but tweaking <code>minSpareThreads</code> could be good</li>
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<li>I don’t see a setting for <code>maxSpareThreads</code> in the docs so that might be an error</li>
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<li>Looks like in Tomcat 8.5 the default URIEncoding for Connectors is UTF-8, so we don’t need to specify that manually anymore: <a href="https://tomcat.apache.org/tomcat-8.5-doc/config/http.html">https://tomcat.apache.org/tomcat-8.5-doc/config/http.html</a></li>
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<li></li>
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<li>Ooh, I just the <code>acceptorThreadCount</code> setting (in Tomcat 7 and 8.5):</li>
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</ul>
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<pre><code>The number of threads to be used to accept connections. Increase this value on a multi CPU machine, although you would never really need more than 2. Also, with a lot of non keep alive connections, you might want to increase this value as well. Default value is 1.
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</code></pre>
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<ul>
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<li>That could be very interesting</li>
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</ul>
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@ -4,7 +4,7 @@
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<url>
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<loc>https://alanorth.github.io/cgspace-notes/2018-01/</loc>
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<lastmod>2018-01-11T10:42:35+02:00</lastmod>
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<lastmod>2018-01-12T06:07:03+02:00</lastmod>
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</url>
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<url>
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@ -14,7 +14,7 @@
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<url>
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<loc>https://alanorth.github.io/cgspace-notes/2017-11/</loc>
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<lastmod>2017-12-17T10:43:56+02:00</lastmod>
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<lastmod>2018-01-12T06:07:03+02:00</lastmod>
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</url>
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<url>
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@ -144,7 +144,7 @@
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<url>
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<loc>https://alanorth.github.io/cgspace-notes/</loc>
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<lastmod>2018-01-11T10:42:35+02:00</lastmod>
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<lastmod>2018-01-12T06:07:03+02:00</lastmod>
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<priority>0</priority>
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</url>
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@ -155,7 +155,7 @@
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<url>
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<loc>https://alanorth.github.io/cgspace-notes/tags/notes/</loc>
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<lastmod>2018-01-11T10:42:35+02:00</lastmod>
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<lastmod>2018-01-12T06:07:03+02:00</lastmod>
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<priority>0</priority>
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</url>
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@ -167,13 +167,13 @@
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<url>
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<loc>https://alanorth.github.io/cgspace-notes/post/</loc>
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<lastmod>2018-01-11T10:42:35+02:00</lastmod>
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<lastmod>2018-01-12T06:07:03+02:00</lastmod>
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<priority>0</priority>
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</url>
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<url>
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<loc>https://alanorth.github.io/cgspace-notes/tags/</loc>
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<lastmod>2018-01-11T10:42:35+02:00</lastmod>
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<lastmod>2018-01-12T06:07:03+02:00</lastmod>
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<priority>0</priority>
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</url>
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