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From "Raffaele P. Guidi" <raffaele.p.gu...@gmail.com>
Subject Re: [jira] [Updated] (DIRECTMEMORY-101) JVM never exit even the main thread finished
Date Sat, 29 Sep 2012 12:20:11 GMT
thanks, I'll try to check it out ASAP

Ciao,
    R

On Sat, Sep 29, 2012 at 9:00 AM, Min Zhou (JIRA) <jira@apache.org> wrote:

>
>      [
> https://issues.apache.org/jira/browse/DIRECTMEMORY-101?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel]
>
> Min Zhou updated DIRECTMEMORY-101:
> ----------------------------------
>
>     Attachment: DIRECTMEMORY-101.diff
>
> After jstack the process, I found that there was a non-daemon thread still
> running. The timer was released by CacheServiceImpl.java.
> Fixing this issue is quite easy, simply turn the code to  construct a
> daemon  timer.
>
> DIRECTMEMORY-101.diff is the patch for this issue.
>
> > JVM never exit even the main thread finished
> > --------------------------------------------
> >
> >                 Key: DIRECTMEMORY-101
> >                 URL:
> https://issues.apache.org/jira/browse/DIRECTMEMORY-101
> >             Project: Apache DirectMemory
> >          Issue Type: Bug
> >          Components: core
> >    Affects Versions: 0.2
> >            Reporter: Min Zhou
> >         Attachments: DIRECTMEMORY-101.diff
> >
> >
> > I wrote some microbenchmark code , which just simply put 10 millions of
> <key,value> in to directorymemory.  and found that JVM never exit even the
> main thread finished running.
> > {noformat}
> > public class Benchmark
> > {
> >
> >     private static long ITER = 1000000000L;
> >     public static double testHeap()
> >     {
> >         CacheService<Long, String> cacheService = new DirectMemory<Long,
> String>()
> >                         .setNumberOfBuffers( 100 )
> >                         .setSize( 10000 )
> >                         .setInitialCapacity( 100000 )
> >                         .setConcurrencyLevel( 1 )
> >                         .setSerializer( new MessagePackSerializer() )
> >                         .newCacheService();
> >
> >         final String str = "helloworld";
> >         // warm up
> >         for(long l = 0; l < ITER; l++) {
> >             cacheService.put(l, str);
> >         }
> >         cacheService.clear();
> >         long start = System.currentTimeMillis();
> >         for(long l = 0; l < ITER; l++) {
> >             cacheService.put(l, str);
> >         }
> >         return ((double)  ITER / (System.currentTimeMillis() - start ))
> * 1000;
> >     }
> >
> >     public static void main( String[] args )
> >     {
> >         ITER = Long.parseLong( args[0] );
> >         System.gc();
> >         System.out.println("testHeap: ops=" + testHeap());
> >     }
> > }
> > {noformat}
>
> --
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