Hello Experts,
I encrypt passwords using DES, 56bit algorithm.
Under very heavy stress (about 70 simultaneous threads) encryption/decryption causes JVM crash.
It looks like JCE internaly invokes System.exit() because I do not see any crash notification.
I am using SUN JDK 1.4.1_02
Any thoughts ?
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Try increasing the memory for your program. Consult the -X options of java. (java -X).
The lack of crash detail might be caused by insufficient memory.
You might want to consider a queued architecture (as in a limited number of threads) - build up a queue for each of these threads for computationally expensive operations. It's better that switching from one thread to the other (I mean JVM's thread switching).
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by: blackhyperdamagePosted on 2003-05-08 at 18:44:01ID: 8492885
That would be envitable. I've tried TripleDES (i am developing smart cards) and although i did not experienced a JVM crash doing so, it significantly slowed the machine. Try halting all the processes for a while to allow forced garbage collection - System.gc() or better limit the # of threads (I suspect you have more that 70 threads) also try to conserve system resources as much as possible. (I have to admit I am almost tempted to implement it in C because of the speed)