[aarch64-port-dev ] Java <<defunct>> on RTSM

[Cao Hoang Thu]

Hi Ed,

What did version kernel you upgrade ? Do you talk about linux kernel ?
What can I do to fix this issue ? I need run some test performance on RTSM, but I don't complete because this issue. 

Regards,
Thu Cao

________________________________
 From: Edward Nevill <ed at camswl.com>
To: Cao Hoang Thu <thuhc at yahoo.com> 
Cc: "aarch64-port-dev at openjdk.java.net" <aarch64-port-dev at openjdk.java.net> 
Sent: Monday, January 27, 2014 7:40 PM
Subject: Re: [aarch64-port-dev ] Java <<defunct>> on RTSM
 

Hi Thu Cao,

We have found that this was due to the kernel we were using on our RTSM
model.

We upgraded the kernel and the problem has gone away. Prior to upgrading
the kernel we had many defunct processes. Since upgrading we have not
seen a single defunct process.

All the best,
Ed.


On Mon, 2014-01-27 at 02:03 -0800, Cao Hoang Thu wrote:
> Hi all,
> 
> I used java with latest source. I ran java two or three times, it don't exit process and became <<defunct>>
> 
> root     30136     1  0 Jan22 ?        00:04:39 [java] <defunct>
> root     30260     1  0 Jan22 ?        00:04:49 [java] <defunct>
> 
> Example 1:
> 1) start hadoop
> 2) run test jobs: teragen and terasort
> --> you can see defunct process when a job exit
> 3) stop hadoop
> --> you can see defunct process
> 
> 
> Example 2:
> 1) run SPECjvm2008, SPECjbb2005 two three times --> defunct progress
> 
> Regards,
> 
> Thu Cao