Mercurial > hg > digilib

changeset 1417:e6ad329cfac8

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
more codec docs.
author robcast
date Thu, 22 Oct 2015 17:07:52 +0200
parents 3e2f71bafcfb
children 849a06d55cc6
files doc/src/site/markdown/java-settings.md
diffstat 1 files changed, 13 insertions(+), 9 deletions(-) [+]
line wrap: on
line diff
--- a/doc/src/site/markdown/java-settings.md	Thu Oct 22 16:42:30 2015 +0200
+++ b/doc/src/site/markdown/java-settings.md	Thu Oct 22 17:07:52 2015 +0200
@@ -36,13 +36,17 @@
 [`/server/dlConfig.jsp`](http://localhost:8080/digilib/server/dlConfig.jsp)
 status page.
 
-Sometimes there are memory issues. Newer versions of Tomcat refuse to load
+Sometimes there are problems with leaking memory. Newer versions of Tomcat refuse to load
 the libraries (see JREMemoryLeakPreventionListener) and I found that in some 
 cases digilib stopped reading TIFF files
 after a period of running. In these cases it helped to install the JAI files in 
 Tomcats `lib/` directory or globally in the local Java JDK
 installation (i.e. in the Java's 'jre/lib/ext/' directory on linux).
 
+If you really need to have the imageio-plugins JAR inside the web app, please consider 
+using Harald Kuhrs [IIOProviderContextListener](https://github.com/haraldk/TwelveMonkeys#deploying-the-plugins-in-a-web-app).
+ 
+
 # Codec availability and Performance
 
 (Ubbo Veentjer, Oct 2015)
@@ -64,7 +68,7 @@
 
 (Robert Casties, Oct 2015)
 
-You can now use the TwelveMonkeys codecs instead of the default JAI-ImageIO by [building digilib](build-maven.html) with the Maven-Parameter `imageio=12m`:
+You can now use the TwelveMonkeys codecs instead of the default JAI-ImageIO by just [building digilib](build-maven.html) with the Maven-Parameter `imageio=12m`:
 
     mvn -Dimageio=12m package
 
@@ -72,17 +76,17 @@
 
 (Ubbo Veentjer, Oct 2015)
 
-In our tests comparing the performance of OpenJDK7, OpenJDK8, imageio-ext and TwelveMonkeys codecs we experienced the following numbers for decoding, encoding and scaling a 4968px*5968px to 50% size: 
+In our tests comparing the performance of OpenJDK7, OpenJDK8, imageio-ext and TwelveMonkeys codecs we experienced the following numbers for decoding, encoding and scaling a 4968px*5968px JPEG file with a color profile to 50% size: 
 
-24801 ms - OpenJDK7
-11507 ms - OpenJDK7 with com.twelvemonkeys.imageio.plugins.jpeg.JPEGImageReader
-4216 ms - OpenJDK7 with imageio-ext using libjpeg-turbo
-3635 ms - OpenJDK8 
+    24801 ms - OpenJDK7
+    11507 ms - OpenJDK7 with com.twelvemonkeys.imageio.plugins.jpeg.JPEGImageReader
+    4216 ms - OpenJDK7 with imageio-ext using libjpeg-turbo
+    3635 ms - OpenJDK8 
 
-This numbers may depend on the actual implementation used, the processing power of the CPU and many other factors, to this are just meant to be a rough hint.
+This numbers may depend on the actual implementation used, the processing power of the CPU and many other factors, to this is just meant to be a rough hint.
 
 For using imageio-ext, the native library needs to be 
-available with the LD_LIBRARY_PATH environment variable (compare: https://github.com/geosolutions-it/imageio-ext/wiki/TurboJPEG-plugin), also the .jar archives need to be on the classpath.
+available with the `LD_LIBRARY_PATH` environment variable (compare: https://github.com/geosolutions-it/imageio-ext/wiki/TurboJPEG-plugin), also the .jar archives need to be on the classpath.
 
 For using the TwelveMonkey Codecs we added the following jars to the tomcat lib directory, which were retrieved by maven (dependency on imageio-jpeg-3.1.2):