Deadlock while running SPECjbb2013

[Jon Masamitsu]

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
>>
>>