Analysis on JDK-8022321 java/lang/ref/OOMEInReferenceHandler.java fails intermittently

Peter Levart peter.levart at gmail.com
Tue Jan 21 22:31:24 UTC 2014


On 01/21/2014 07:17 PM, srikalyan wrote:
> Hi Peter/David, catching up after long weekend. Why would there be an 
> OOME in object heap due to class loading in perm gen space ?

The perm gen is not a problem her (JDK 8 does not have it and we see 
OOME on JDK8 too). Each time a class is loaded, new java.lang.Class 
object is allocated on heap.

Regards, Peter

> Please correct if i am missing something here. Meanwhile i will give 
> the version of Reference Handler you both agreed on a try.
> --
> Thanks
> kalyan
> Ph: (408)-585-8040
>
> On 1/21/14, 7:24 AM, Peter Levart wrote:
>> On 01/21/2014 07:54 AM, Peter Levart wrote:
>>> *[Loaded sun.misc.Cleaner from 
>>> /home/peter/Apps64/jdk1.8.0-ea-b121/jre/lib/rt.jar]*
>>> [Loaded java.io.ByteArrayInputStream from 
>>> /home/peter/Apps64/jdk1.8.0-ea-b121/jre/lib/rt.jar]
>>> [Loaded sun.util.calendar.ZoneInfoFile$ZoneOffsetTransitionRule from 
>>> /home/peter/Apps64/jdk1.8.0-ea-b121/jre/lib/rt.jar]
>>> ...
>>>
>>>
>>> I'm on linux, 64bit and using official EA build 121 of JDK 8...
>>>
>>> But if I try with JDK 7u45, I don't see it.
>>
>> So what changed between JDK 7 and JDK 8?
>>
>> I suspect the following: 8007572: Replace existing jdk timezone data 
>> at <java.home>/lib/zi with JSR310's tzdb
>>
>>
>> Regards, Peter
>>




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