RFR: 8266217: ZGC: Improve the -Xlog:gc+init output for NUMA

[Jie Fu]

On Thu, 29 Apr 2021 05:59:08 GMT, Stefan Karlsson <stefank at openjdk.org> wrote:

>> Hi all,
>> 
>> This patch improves the -Xlog:gc+init output for NUMA, which is suggested by StefanK [1].
>> The implementation just follows how UseLargePages are setup and printed.
>> 
>> Before (in docker, not support get_mempolicy)
>> 
>> [0.007s][info][gc,init] Initializing The Z Garbage Collector
>> [0.007s][info][gc,init] Version: 17-internal+0-adhoc..jdk (fastdebug)
>> [0.007s][info][gc,init] NUMA Support: Disabled
>> ...
>> 
>> 
>> After (in docker, not support get_mempolicy)
>> 
>> [0.007s][info][gc,init] Initializing The Z Garbage Collector
>> [0.007s][info][gc,init] Version: 17-internal+0-adhoc..jdk (fastdebug)
>> [0.007s][info][gc,init] NUMA Support: Unsupported
>> ...
>> 
>> 
>> Testing:
>>   - tier1~3 on Linux/x64, no regression
>> 
>> Thanks.
>> Best regards,
>> Jie
>> 
>> 
>> [1] https://mail.openjdk.java.net/pipermail/hotspot-gc-dev/2020-March/028927.html
>
> Marked as reviewed by stefank (Reviewer).

Thanks @stefank for your review and help.

-------------

PR: https://git.openjdk.java.net/jdk/pull/3778