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Add notes for 2018-09-21

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Alan Orth
2018-09-22 00:49:53 +03:00
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docs/2018-09/index.html
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@ -18,7 +18,7 @@ I’m testing the new DSpace 5.8 branch in my Ubuntu 18.04 environment and I
" />
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@ -41,9 +41,9 @@ I&rsquo;m testing the new DSpace 5.8 branch in my Ubuntu 18.04 environment and I
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@ -530,6 +530,41 @@ $ grep -c -E 'session_id=[A-Z0-9]{32}:ip_addr=50.116.102.77' dspace.log.2018-09-
<ul>
<li>Contact Atmire to ask how we can buy more credits for future development</li>
<li>I researched the Solr <code>filterCache</code> size and I found out that the formula for calculating the potential memory use of <strong>each entry</strong> in the cache is:</li>
</ul>
<pre><code>((maxDoc/8) + 128) * (size_defined_in_solrconfig.xml)
</code></pre>
<ul>
<li>Which means that, for our statistics core with <em>149 million</em> documents, each entry in our <code>filterCache</code> would use 8.9 GB!</li>
</ul>
<pre><code>((149374568/8) + 128) * 512 = 9560037888 bytes (8.9 GB)
</code></pre>
<ul>
<li>So I think we can forget about tuning this for now!</li>
<li><a href="http://lucene.472066.n3.nabble.com/Calculating-filterCache-size-td4142526.html">Discussion on the mailing list about <code>filterCache</code> size</a></li>
<li><a href="https://docs.google.com/document/d/1vl-nmlprSULvNZKQNrqp65eLnLhG9s_ydXQtg9iML10/edit">Article discussing testing methodology for different <code>filterCache</code> sizes</a></li>
<li>Discuss Handle links on Twitter with IWMI</li>
</ul>
<h2 id="2018-09-21">2018-09-21</h2>
<ul>
<li>I see that there was a nice optimization to the ImageMagick PDF CMYK detection in the upstream <code>dspace-5_x</code> branch: <a href="https://github.com/DSpace/DSpace/pull/2204">DS-3664</a></li>
<li>The fix will go into DSpace 5.10, and we are currently on DSpace 5.8 but I think I&rsquo;ll cherry-pick that fix into our <code>5_x-prod</code> branch:
<ul>
<li>4e8c7b578bdbe26ead07e36055de6896bbf02f83: ImageMagick: Only execute &ldquo;identify&rdquo; on first page</li>
</ul></li>
<li>I think it would also be nice to cherry-pick the fixes for <a href="https://github.com/DSpace/DSpace/pull/2020">DS-3883</a>, which is related to optimizing the XMLUI item display of items with many bitstreams
<ul>
<li>a0ea20bd1821720b111e2873b08e03ce2bf93307: DS-3883: Don&rsquo;t loop through original bitstreams if only displaying thumbnails</li>
<li>8d81e825dee62c2aa9d403a505e4a4d798964e8d: DS-3883: If only including thumbnails, only load the main item thumbnail.</li>
</ul></li>
</ul>
<!-- vim: set sw=2 ts=2: -->

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@ -4,7 +4,7 @@
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@ -184,7 +184,7 @@
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@ -195,7 +195,7 @@
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@ -207,13 +207,13 @@
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