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From "Vladimir Strigun (JIRA)" <j...@apache.org>
Subject [jira] Created: (HARMONY-4555) [drlvm][thread][perf]Thread.currentThread() works slowly
Date Thu, 26 Jul 2007 13:02:40 GMT
[drlvm][thread][perf]Thread.currentThread() works slowly
--------------------------------------------------------

                 Key: HARMONY-4555
                 URL: https://issues.apache.org/jira/browse/HARMONY-4555
             Project: Harmony
          Issue Type: Bug
          Components: DRLVM
            Reporter: Vladimir Strigun


The test below shows that Thread.currentThread() method significantly slower in comparison
win Sun. 
I believe implementation of method through vmmagic could singnificanlty improve the situation.

Results of test execution:
java client: 200 msec
java server: 20 
harmony server: 5800 msec


Small test:
public class CurrentThreadTest {
    public static void main(String[] args) {
        long st = System.currentTimeMillis();
        for(int i=0; i< 100000000; i++) {
            Thread.currentThread();
        }
        long res = System.currentTimeMillis()-st;
        System.out.println("res="+res);
    }
}

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