Installing Java
How to install Java JRE and plugin on the SheevaPlug.
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The state of Java support is:
- OpenJDK with Hotspot Zero (default): works fine, but there’s not JIT so it’s somewhat slow; I’ve found the performance of tomcat + webapps reasonable (after the first compile of JSP pages)
- OpenJDK with CACAO vm (java -cacao): mostly ok, but has big problem with JMX (as in “crashes the application”); on the other hand cacao vm has a JIT, which means that when it works it’s much much faster than hotspot zero (tomcat startup time is reduced to about 1/3)
- Sun EJRE: extremely fast and feature complete. However it’s *not free*; you have to pay royalties when deploying the system; furthemore the JRE is still in “early access” phase, it will expire after 90 days.
Thanks for the info Luca, that’s a lot more detail than I could have dug up myself.
Hello Kenny,
Could you try if jdownloader is supported from this java release?
Thanks for yuor awesome work
Jdownloader works but very slow and the CPU keeps running 100%.
However, you can try tucan downloader provided you compile it and install the required packages (see Readme). It works very well with low consumption. The issue is that this soft manage only a small subset of what jdownloader can do.
Hi. There seem to be a bunch of interesting entries in this blog, but all I see are the article titles and the comments. Am I missing something?
You’re probably looking at the blog page, you need to look at the main wiki page at http://computingplugs.com
It is possible to sign up and download a version from Sun directly :
http://java.sun.com/javase/downloads/embedded.jsp
It works like a charm for me on armedslack-current.
Cheers
Hi, (I did not find how to tell you, so I made this offtopic comment),
This post is related to the PLUG 3.0 that you are presenting on the top of your page. I guess you should want to share these information
IONICS is presenting their new plugs, they have ploted a version with internal 1.8′ DISK and other wihtout disk but with 2 e-sata.
We can find info at:
http://ionics.wordpress.com/
and
http://www.ionicsplug.com/
With the ‘cumulus’ (the one with 2 e-sata) we might have pretty good hard disk performance on a plug. I sent you a request (two weeks ago) to send me hdparm on yout plug
Cheers
Thanks for the heads up, I’ll update the front page with your information.
ps. I reply to your request about hdparm in the sheevaplug performance page. Did you see it?
I saw the results, you were pretty fast, thank for the results =)
More news, I found the new plugs from Global Scale Tech they 2 new plugs the GuruPlug Server, they will come with the 1.2GHz processor but with WIRELESS Guru Plus will come with 2 GB ethernet , 2 USB and 1 eSATA, and Guru Standard just with 1GB ethernet and 2 USB.
Guru PLus is US$129 and Standard US$99, they will start shipping in april
ops, forgot to tell the link
http://www.globalscaletechnologies.com/c-4-guruplugs.aspx
Is there bluetooth support in OpenJDK on Sheeva Plug? I am new to Java thought javax.bluetooth is part of standard JDK. Is that true?
I doubt it, I don’t think the sheeva plug even have a bluetooth radio.
There are some vendors who provide SD based BT solution.