I've been working on developing a Java library (used to create a java app) for the Sirius SC-C1 that Mitch makes. I've got it ported over to Java but am having some issues with the virtual comm port communication.
It will work under Linux and Windows once the comm issues are resolved (Tested on Ubuntu, NT, XP) so I see no reason it wouldn't work on LinuxICE.
Performance wise it should be as good or better than the C# version provided by Mitch.
And it's open source, I've actually started a project on sourceforge.net. search for JSirius