RFR(S): JDK-8156769 gc/metaspace/CompressedClassSpaceSizeInJmapHeap.java fails with java.lang.Exception

Staffan Larsen staffan.larsen at oracle.com
Thu May 12 18:01:57 UTC 2016


> On 12 maj 2016, at 19:26, Dmitry Samersoff <dmitry.samersoff at oracle.com> wrote:
> 
> Alexander,
> 
> jmap doesn't support coredump (non-cooperative) access anymore. This
> functionality moved to jhsdb.
> 
> As a long term, we should create two different set of tests - one for
> cooperative mode (jmap, jstack, etc) and one for non-cooperative mode
> (jhsdb).
> 
> Cooperative mode tests should resides alongside with other attach
> related tests - i.e. in jdk/test/sun/tools

Or they could be part of the diagnostic command test suite (hotspot/test/serviceability/dcmd/) since all they do is run diagnostic commands.

> 
> Non-cooperative mode (jhsdb) tests should be placed together with other
> SA tests - in hotspot/test/serviceability/sa
> 
> -Dmitry
> 
> On 2016-05-12 19:27, Alexander Kulyakhtin wrote:
>> Hi Dmitry,
>> 
>> With this change we are not launching jmap anymore, launching jhsdb instead.
>> I just wanted to make sure if it is ok not to test jmap anymore?
>> Perhaps, instead of changing we should make the test to test both ?
>> 
>> Best regards,
>> Alexander
>> 
>> ----- Original Message -----
>> From: dmitry.samersoff at oracle.com
>> To: staffan.larsen at oracle.com
>> Cc: serviceability-dev at openjdk.java.net, hotspot-gc-dev at openjdk.java.net
>> Sent: Thursday, May 12, 2016 5:30:26 PM GMT +03:00 Iraq
>> Subject: Re: RFR(S): JDK-8156769 gc/metaspace/CompressedClassSpaceSizeInJmapHeap.java fails with java.lang.Exception
>> 
>> Staffan,
>> 
>>> The GC.heap_info Diagnostic Command should really be updated to
>>> contain a lot more information (similar to what SA produces).
>> 
>>> Should we file an enhancement for that?
>> 
>> I think yes.
>> 
>> -Dmitry
>> 
>> 
>> On 2016-05-12 17:02, Staffan Larsen wrote:
>>> Looks good!
>>> 
>>> The GC.heap_info Diagnostic Command should really be updated to
>>> contain a lot more information (similar to what SA produces). Should
>>> we file an enhancement for that?
>>> 
>>> Thanks, /Staffan
>>> 
>>> 
>>>> On 12 maj 2016, at 15:25, Dmitry Samersoff
>>>> <dmitry.samersoff at oracle.com> wrote:
>>>> 
>>>> Everybody,
>>>> 
>>>> Please review test changes:
>>>> 
>>>> http://cr.openjdk.java.net/~dsamersoff/JDK-8156769/webrev.01/
>>>> 
>>>> The test is updated to use jhsdb launcher instead of jmap.
>>>> 
>>>> -Dmitry
>>>> 
>>>> -- Dmitry Samersoff Oracle Java development team, Saint Petersburg,
>>>> Russia * I would love to change the world, but they won't give me
>>>> the sources.
>>> 
>> 
>> 
> 
> 
> -- 
> Dmitry Samersoff
> Oracle Java development team, Saint Petersburg, Russia
> * I would love to change the world, but they won't give me the sources.



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