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Update notes for 2017-11-23

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Alan Orth
2017-11-24 00:59:11 +02:00
parent 9520c8b490
commit 56a001943d
3 changed files with 10 additions and 8 deletions
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@ -38,7 +38,7 @@ COPY 54701
<meta property="article:published_time" content="2017-11-02T09:37:54&#43;02:00"/>
<meta property="article:modified_time" content="2017-11-23T12:23:19&#43;02:00"/>
<meta property="article:modified_time" content="2017-11-23T17:18:45&#43;02:00"/>
@ -86,9 +86,9 @@ COPY 54701
"@type": "BlogPosting",
"headline": "November, 2017",
"url": "https://alanorth.github.io/cgspace-notes/2017-11/",
"wordCount": "4825",
"wordCount": "4849",
"datePublished": "2017-11-02T09:37:54&#43;02:00",
"dateModified": "2017-11-23T12:23:19&#43;02:00",
"dateModified": "2017-11-23T17:18:45&#43;02:00",
"author": {
"@type": "Person",
"name": "Alan Orth"
@ -1074,6 +1074,7 @@ $ grep -c com.atmire.utils.UpdateSolrStatsMetadata dspace.log.2017-11-19
<ul>
<li>I&rsquo;m wondering if REST works differently, or just doesn&rsquo;t log these sessions?</li>
<li>I wonder if they are measurable via JMX MBeans?</li>
<li>I did some tests locally and I don&rsquo;t see the sessionCounter incrementing after making requests to REST, but it does with XMLUI and OAI</li>
<li>I came across some interesting PostgreSQL tuning advice for SSDs: <a href="https://amplitude.engineering/how-a-single-postgresql-config-change-improved-slow-query-performance-by-50x-85593b8991b0">https://amplitude.engineering/how-a-single-postgresql-config-change-improved-slow-query-performance-by-50x-85593b8991b0</a></li>
<li>Apparently setting <code>random_page_cost</code> to 1 is &ldquo;common&rdquo; advice for systems running PostgreSQL on SSD (the default is 4)</li>
<li>So I deployed this on DSpace Test and will check the Munin PostgreSQL graphs in a few days to see if anything changes</li>