RFR (S) 8210724: Change the verbosity threshold of logging for [oopstorage,ref]

[Stefan Johansson]

On 2018-09-14 02:41, Kim Barrett wrote:
>> On Sep 13, 2018, at 8:01 PM, Man Cao <manc at google.com> wrote:
>>
>> Hi all,
>>
>> Could anyone review this logging change for oopstorage?
>> Webrev: http://cr.openjdk.java.net/~jcbeyler/8210724/webrev.00/
>> Bug: https://bugs.openjdk.java.net/browse/JDK-8210724
>>
>> This is similar to the webrev I previously sent for https://bugs.openjdk.java.net/browse/JDK-8210562. Kim mentioned it might be reasonable to improve the logging in oopStorage.cpp. We discussed and decided to create a separate issue for improving the logging.
>>
>> The patch changes the logging level for [oopstorage,ref] to trace, and consistently uses debug level for [oopstorage,blocks] and unusual events, and uses log_info() for printing statistics. I think this would make the logging for oopstorage more user-friendly.
>>
>> Below is comparison of lines of messages:
>> $ java -Xlog:oopstorage*=<level> -Xms500m -Xmx500m -jar dacapo-9.12-bach.jar tradesoap
>>                  info   | debug  | trace
>> without patch:  107934 | 112990 | 112701
>> with patch:       1694 |   5247 | 112241
>>
>> -Man
> 
> Looks good.
>

Looks good to me too,
Stefan