Re: [rules-users] StatefulKnowledgeSession construction executes sequentially (no multithread)
Same result. This is the source code.
This test tells us that insert() locks too (too many internal resize and
system memory operations).
I tested passing to thread class the session, the knowledge base and create
session at thread construction time, at thread execution time. I obtain the
same result for all tests.
Oh, yes, if I insert "double a = Math.sqrt(1919) * Math.sqrt(1919);" in the
thread execution without drools code, I can see 100% CPU usage :-)
The only solution that increases CPU usage is the pooling one.
Oh my god!
public class KnowledgeSessionThread extends Thread {
private static final int iterations = 500;
private static final int numberFacts = 1000;
private StatefulKnowledgeSession session;
public KnowledgeSessionThread(StatefulKnowledgeSession sess) throws
Exception {
this.session = sess;
}
public void run() {
try {
for( int i = 0; i < iterations; i++ ) {
for( int j = 0; j < numberFacts; j++ ) {
Message msg = new Message();
msg.setMessage("Hello world");
msg.setStatus(Message.HELLO);
session.insert(msg);
}
}
session.fireAllRules();
session.dispose();
System.out.println("Thread finished " + this.currentThread().getName());
} catch( Exception e ) {
e.printStackTrace();
}
}
}
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