Deadlock while running SPECjbb2013

[Lokesh Gidra]

I am making more tests to confirm what I said earlier. I will update soon.

Lokesh




----- Original Message -----
> From: Jon Masamitsu <jon.masamitsu at oracle.com>
> To: Lokesh Gidra <lokesh.gidra at yahoo.com>
> Cc: "hotspot-gc-dev at openjdk.java.net" <hotspot-gc-dev at openjdk.java.net>
> Sent: Wednesday, 24 April 2013 6:55 PM
> Subject: Re: Deadlock while running SPECjbb2013
> 
> 
> On 4/24/13 8:07 AM, Lokesh Gidra wrote:
>>  Its on Linux 3.0.0
>> 
>>  It also causes out of memory at the given configuration, whereas I have 
> successfully managed to complete the test with 4G heap. So not really sure what 
> is causing these deadlocks/OOMs.
> 
> What cause is given for the OOM?  And when you say deadlock,
> are all the threads waiting?  Or are there threads that are
> working but never finish their task?
> 
> Jon
>> 
>>  Lokesh
>> 
>> 
>>>  ________________________________
>>>  From: Jon Masamitsu <jon.masamitsu at oracle.com>
>>>  To: hotspot-gc-dev at openjdk.java.net
>>>  Sent: Wednesday, 24 April 2013 4:16 PM
>>>  Subject: Re: Deadlock while running SPECjbb2013
>>> 
>>> 
>>> 
>>>  I don't think we've seen this.  What OS?
>>> 
>>>  I can create a bug report for this.  Please send the info needed to
>>>  reproduce it.
>>> 
>>>  Thanks.
>>> 
>>>  Jon
>>> 
>>> 
>>>  On 4/23/13 4:59 AM, Lokesh Gidra wrote:
>>> 
>>>  Hello,
>>>> 
>>>>  I am trying to experiment SPECjbb2013 on a 48-core AMD machine with 
> the following command line options on OpenJDK7 build 147:
>>>> 
>>>> 
>>>>  -XX:ParallelGCThreads=46 -Xms8g -Xmx8g -XX:+UseParallelOldGC 
> -XX:+DisableExplicitGC -XX:-UseLargePages -XX:-UseCompressedOops
>>>> 
>>>> 
>>>>  The execution hangs sometimes. When I attached the process to gdb, 
> found that the GC threads are stuck in the marking phase of Old generation 
> collection. The bug also hits with lesser GC threads. I am wondering if this is 
> a known issue.
>>>> 
>>>> 
>>>>  Regards,
>>>>  Lokesh
>>> 
>>> 
>