I've written a rather large Java application for my company. It uses MySQL and serial
communications. Part of the application loads firmware from a file on the PC into an
embedded device over the serial ports. It can support as many serial ports as the computer
can support (currently I've used it with 10). It runs a separate thread for each port. It
runs on Linux (specifically, I'm using FC4). The MySQL database is on a server.
The portion of the code used for doing the serial port communication was taken from
another application that performs a similar task. This other application only supports a
single serial port and only runs on Windows.
It seems the other application can load the firmware in a fraction of the time that mine
can, but the code is the same. I haven't yet been able to try my code on a Windows box
that works to see if it'll run faster. I'm wondering if a Java on Linux might be slower
than Java on Windows? I'm also wondering if there is a JIT compiler in existence that I
can use to compile the Java app. into native code for Linux (there are many for Windows).
The JIT would have to support Sun Java 1.5. (Note: Seems I can't find HotSpot for Java 1.5)
It also seems that my application takes far longer than it should to load firmware
depending upon the number of devices connected: loading 203KB at 115,200 on a single
device takes 15 minutes, 10 devices takes 20 minutes).
PGA
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Paul G. Allen
Owner, Sr. Engineer, BSIT/SE
Random Logic Consulting Services
www.randomlogic.com
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[email protected]
http://www.kernel-panic.org/cgi-bin/mailman/listinfo/kplug-list
