Add notes for 2017-09-24
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@ -438,3 +438,22 @@ $ schedtool -D -e ionice -c2 -n7 nice -n19 dspace filter-media -f -i 10947/1 -p
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- Experimenting with setting up a global JNDI database resource that can be pooled among all the DSpace webapps (reference the [April, 2017 DCAT meeting](https://wiki.duraspace.org/display/cmtygp/DCAT+Meeting+April+2017) comments)
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- See: https://www.journaldev.com/2513/tomcat-datasource-jndi-example-java
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- See: http://memorynotfound.com/configure-jndi-datasource-tomcat/
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## 2017-09-24
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- Start investigating other platforms for CGSpace due to linear instance pricing on Linode
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- We need to figure out how much memory is used by applications, caches, etc, and how much disk space the asset store needs
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- First, here's the last week of memory usage on CGSpace and DSpace Test:
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- 8GB of RAM seems to be good for DSpace Test for now, with Tomcat's JVM heap taking 3GB, caches and buffers taking 3–4GB, and then ~1GB unused
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- 24GB of RAM is _way_ too much for CGSpace, with Tomcat's JVM heap taking 5.5GB and caches and buffers happily using 14GB or so
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- As far as disk space, the CGSpace assetstore currently uses 51GB and Solr cores use 86GB (mostly in the statistics core)
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- DSpace Test currently doesn't even have enough space to store a full copy of CGSpace, as its Linode instance only has 96GB of disk space
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- I've heard Google Cloud is nice (cheap and performant) but it's definitely more complicated than Linode and instances aren't _that_ much cheaper to make it worth it
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- Here are some theoretical instances on Google Cloud:
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- DSpace Test, `n1-standard-2 ` with 2 vCPUs, 7.5GB RAM, 300GB persistent SSD: $99/month
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- CGSpace, `n1-standard-4 ` with 4 vCPUs, 15GB RAM, 300GB persistent SSD: $148/month
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- Looking at [Linode's instance pricing](https://www.linode.com/pricing#all) it seems we could use the same 8GB instance for $40/month, and then add [block storage](https://www.linode.com/docs/platform/how-to-use-block-storage-with-your-linode) of ~300GB for $30 (block storage is currently in beta and priced at $0.10/GiB)
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@ -25,7 +25,7 @@ Ask Sisay to clean up the WLE approvers a bit, as Marianne’s user account
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<meta property="article:published_time" content="2017-09-07T16:54:52+07:00"/>
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<meta property="article:modified_time" content="2017-09-21T21:53:05+03:00"/>
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<meta property="article:modified_time" content="2017-09-22T17:59:45+03:00"/>
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@ -61,9 +61,9 @@ Ask Sisay to clean up the WLE approvers a bit, as Marianne’s user account
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"@type": "BlogPosting",
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"headline": "September, 2017",
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"url": "https://alanorth.github.io/cgspace-notes/2017-09/",
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"wordCount": "3093",
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"wordCount": "3333",
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"datePublished": "2017-09-07T16:54:52+07:00",
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"dateModified": "2017-09-21T21:53:05+03:00",
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"dateModified": "2017-09-22T17:59:45+03:00",
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"author": {
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"@type": "Person",
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"name": "Alan Orth"
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@ -619,6 +619,32 @@ DELETE 207
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<li>See: <a href="http://memorynotfound.com/configure-jndi-datasource-tomcat/">http://memorynotfound.com/configure-jndi-datasource-tomcat/</a></li>
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</ul>
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<h2 id="2017-09-24">2017-09-24</h2>
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<ul>
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<li>Start investigating other platforms for CGSpace due to linear instance pricing on Linode</li>
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<li>We need to figure out how much memory is used by applications, caches, etc, and how much disk space the asset store needs</li>
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<li>First, here’s the last week of memory usage on CGSpace and DSpace Test:</li>
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</ul>
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<p><img src="/cgspace-notes/2017/09/cgspace-memory-week.png" alt="CGSpace memory week" />
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<img src="/cgspace-notes/2017/09/dspace-test-memory-week.png" alt="DSpace Test memory week" /></p>
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<ul>
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<li>8GB of RAM seems to be good for DSpace Test for now, with Tomcat’s JVM heap taking 3GB, caches and buffers taking 3–4GB, and then ~1GB unused</li>
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<li>24GB of RAM is <em>way</em> too much for CGSpace, with Tomcat’s JVM heap taking 5.5GB and caches and buffers happily using 14GB or so</li>
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<li>As far as disk space, the CGSpace assetstore currently uses 51GB and Solr cores use 86GB (mostly in the statistics core)</li>
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<li>DSpace Test currently doesn’t even have enough space to store a full copy of CGSpace, as its Linode instance only has 96GB of disk space</li>
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<li>I’ve heard Google Cloud is nice (cheap and performant) but it’s definitely more complicated than Linode and instances aren’t <em>that</em> much cheaper to make it worth it</li>
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<li>Here are some theoretical instances on Google Cloud:
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<ul>
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<li>DSpace Test, <code>n1-standard-2</code> with 2 vCPUs, 7.5GB RAM, 300GB persistent SSD: $99/month</li>
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<li>CGSpace, <code>n1-standard-4</code> with 4 vCPUs, 15GB RAM, 300GB persistent SSD: $148/month</li>
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</ul></li>
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<li>Looking at <a href="https://www.linode.com/pricing#all">Linode’s instance pricing</a> it seems we could use the same 8GB instance for $40/month, and then add <a href="https://www.linode.com/docs/platform/how-to-use-block-storage-with-your-linode">block storage</a> of ~300GB for $30 (block storage is currently in beta and priced at $0.10/GiB)</li>
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</ul>
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@ -27,7 +27,7 @@ Disallow: /cgspace-notes/2015-12/
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Disallow: /cgspace-notes/2015-11/
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Disallow: /cgspace-notes/
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Disallow: /cgspace-notes/categories/
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Disallow: /cgspace-notes/categories/notes/
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Disallow: /cgspace-notes/tags/notes/
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Disallow: /cgspace-notes/categories/notes/
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Disallow: /cgspace-notes/post/
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Disallow: /cgspace-notes/tags/
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@ -9,7 +9,7 @@
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<url>
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<loc>https://alanorth.github.io/cgspace-notes/2017-09/</loc>
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<lastmod>2017-09-21T21:53:05+03:00</lastmod>
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<lastmod>2017-09-22T17:59:45+03:00</lastmod>
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</url>
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<url>
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@ -133,27 +133,27 @@
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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/notes/</loc>
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<lastmod>2017-09-22T17:59:45+03:00</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/categories/notes/</loc>
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<lastmod>2017-09-19T22:23:37+03:00</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/notes/</loc>
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<lastmod>2017-09-21T21:53:05+03:00</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/post/</loc>
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<lastmod>2017-09-21T21:53:05+03:00</lastmod>
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<lastmod>2017-09-22T17:59:45+03:00</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>2017-09-21T21:53:05+03:00</lastmod>
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<lastmod>2017-09-22T17:59:45+03:00</lastmod>
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<priority>0</priority>
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</url>
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