RFR: 8246272: Make use of GCLogPrecious for G1, Parallel and Serial

Stefan Karlsson stefan.karlsson at oracle.com
Tue Jun 9 09:23:53 UTC 2020


Thanks, StefanJ.

StefanK

On 2020-06-09 11:18, stefan.johansson at oracle.com wrote:
> Hi Stefan,
>
> On 2020-06-08 20:48, Stefan Karlsson wrote:
>> Hi all,
>>
>> Please review this patch to turn the GC init logging into "precious" 
>> logging, so that those lines get dumped into the hs_err file.
>>
>> https://cr.openjdk.java.net/~stefank/8246272/webrev.01/
> Looks good.
>
> Thanks,
> StefanJ
>
>> https://bugs.openjdk.java.net/browse/JDK-8246272
>>
>> Example output from a G1 hs_err file:
>>
>> GC Precious Log:
>>   CPUs: 32 total, 32 available
>>   Memory: 125G
>>   Large Page Support: Disabled
>>   NUMA Support: Disabled
>>   Compressed Oops: Enabled (Zero based)
>>   Heap Region Size: 16M
>>   Heap Min Capacity: 16M
>>   Heap Initial Capacity: 2016M
>>   Heap Max Capacity: 30688M
>>   Pre-touch: Disabled
>>   Parallel Workers: 23
>>   Concurrent Workers: 6
>>   Concurrent Refinement Workers: 23
>>   Periodic GC: Disabled
>>
>> I've changed the generic GCInitLogger so all GCs get these lines 
>> dumped. I've also added the G1 and Parallel specific lines. I can add 
>> the Shenandoah and Epsilon specific lines, if it is requested.
>>
>> Thanks,
>> StefanK



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