From 5ca656ee154f2269df034d6c74bb4f585e2fd6f8 Mon Sep 17 00:00:00 2001
From: Alan Orth <alan.orth@gmail.com>
Date: Thu, 20 Dec 2018 12:56:16 +0200
Subject: [PATCH] Add notes for 2018-12-20

---
 content/posts/2018-12.md | 17 +++++++++++++++++
 docs/2018-12/index.html  | 22 +++++++++++++++++++++-
 2 files changed, 38 insertions(+), 1 deletion(-)

diff --git a/content/posts/2018-12.md b/content/posts/2018-12.md
index fc5719204..ce273d8d2 100644
--- a/content/posts/2018-12.md
+++ b/content/posts/2018-12.md
@@ -405,4 +405,21 @@ Mozilla/3.0 (compatible; Indy Library)
 
 - Update Atmire Listings and Reports to add the journal title (`dc.source`) to bibliography and update example bibliography values ([#405](https://github.com/ilri/DSpace/pull/405))
 
+## 2018-12-20
+
+- Testing compression of PostgreSQL backups with xz and gzip:
+
+```
+$ time xz -c cgspace_2018-12-19.backup > cgspace_2018-12-19.backup.xz
+xz -c cgspace_2018-12-19.backup > cgspace_2018-12-19.backup.xz  48.29s user 0.19s system 99% cpu 48.579 total
+$ time gzip -c cgspace_2018-12-19.backup > cgspace_2018-12-19.backup.gz
+gzip -c cgspace_2018-12-19.backup > cgspace_2018-12-19.backup.gz  2.78s user 0.09s system 99% cpu 2.899 total
+$ ls -lh cgspace_2018-12-19.backup*
+-rw-r--r-- 1 aorth aorth 96M Dec 19 02:15 cgspace_2018-12-19.backup
+-rw-r--r-- 1 aorth aorth 94M Dec 20 11:36 cgspace_2018-12-19.backup.gz
+-rw-r--r-- 1 aorth aorth 93M Dec 20 11:35 cgspace_2018-12-19.backup.xz
+```
+
+- Looks like it's really not worth it...
+
 <!-- vim: set sw=2 ts=2: -->
diff --git a/docs/2018-12/index.html b/docs/2018-12/index.html
index 07c23c8fb..ac25bfb64 100644
--- a/docs/2018-12/index.html
+++ b/docs/2018-12/index.html
@@ -48,7 +48,7 @@ I noticed that there is another issue with PDF thumbnails on CGSpace, and I see
   "@type": "BlogPosting",
   "headline": "December, 2018",
   "url": "https://alanorth.github.io/cgspace-notes/2018-12/",
-  "wordCount": "2488",
+  "wordCount": "2576",
   "datePublished": "2018-12-02T02:09:30&#43;02:00",
   "dateModified": "2018-12-19T11:05:04&#43;02:00",
   "author": {
@@ -581,6 +581,26 @@ $ grep -o -E 'session_id=[A-Z0-9]{32}:ip_addr=54.70.40.11' dspace.log.2018-12-05
 <li>Update Atmire Listings and Reports to add the journal title (<code>dc.source</code>) to bibliography and update example bibliography values (<a href="https://github.com/ilri/DSpace/pull/405">#405</a>)</li>
 </ul>
 
+<h2 id="2018-12-20">2018-12-20</h2>
+
+<ul>
+<li>Testing compression of PostgreSQL backups with xz and gzip:</li>
+</ul>
+
+<pre><code>$ time xz -c cgspace_2018-12-19.backup &gt; cgspace_2018-12-19.backup.xz
+xz -c cgspace_2018-12-19.backup &gt; cgspace_2018-12-19.backup.xz  48.29s user 0.19s system 99% cpu 48.579 total
+$ time gzip -c cgspace_2018-12-19.backup &gt; cgspace_2018-12-19.backup.gz
+gzip -c cgspace_2018-12-19.backup &gt; cgspace_2018-12-19.backup.gz  2.78s user 0.09s system 99% cpu 2.899 total
+$ ls -lh cgspace_2018-12-19.backup*
+-rw-r--r-- 1 aorth aorth 96M Dec 19 02:15 cgspace_2018-12-19.backup
+-rw-r--r-- 1 aorth aorth 94M Dec 20 11:36 cgspace_2018-12-19.backup.gz
+-rw-r--r-- 1 aorth aorth 93M Dec 20 11:35 cgspace_2018-12-19.backup.xz
+</code></pre>
+
+<ul>
+<li>Looks like it&rsquo;s really not worth it&hellip;</li>
+</ul>
+
 <!-- vim: set sw=2 ts=2: -->