RFR: JDK-8133818: Additional number of processed references printed with -XX:+PrintReferenceGC after JDK-8047125

[Bengt Rutisson]

On 01/09/15 18:52, Tony Printezis wrote:
> Bengt and Ramki,
>
> ShipIt
>
> (FWIW, I had already reviewed it for Ramki internally but I did go 
> over the webrev one more time)

Thanks for looking at this Tony!

Bengt

>
> On September 1, 2015 at 9:12:43 AM, Bengt Rutisson 
> (bengt.rutisson at oracle.com <mailto:bengt.rutisson at oracle.com>) wrote:
>
>>
>> Hi everyone,
>>
>> Could I have a couple of reviews for this patch contributed by Ramki?
>>
>> http://cr.openjdk.java.net/~brutisso/8133818/webrev.00/
>> https://bugs.openjdk.java.net/browse/JDK-8133818
>>
>> This changes the log format to print Cleaners separately from
>> PhantomReferences.
>>
>> Old logging:
>>
>> #0: [PhantomReference, 0 refs, 0 refs, 0,0000433 secs]
>>
>> New logigng:
>>
>> #0: [PhantomReference, 0 refs, 0,0000797 secs]#0: [Cleaners, 0 refs,
>> 0,0000527 secs]
>>
>> It also adds the number of references processed for the JNI Weak
>> References section.
>>
>> Old logging:
>>
>> #0: [JNI Weak Reference, 0,0000211 secs]
>>
>> New logging:
>>
>> #0: [JNI Weak Reference, 0 refs, 0,0000401 secs]
>>
>> Here are full log entry examples with -XX:+PrintGCDetails
>> -XX:+PrintReferenceGC:
>>
>> Old logging:
>>
>> #0: [GC (System.gc()) #0: [SoftReference, 0 refs, 0,0000713 secs]#0:
>> [WeakReference, 8 refs, 0,0000306 secs]#0: [FinalReference, 7 refs,
>> 0,0000445 secs]#0: [PhantomReference, 0 refs, 0 refs, 0,0000433 secs]#0:
>> [JNI Weak Reference, 0,0000211 secs][PSYoungGen: 7741K->912K(150016K)]
>> 7741K->920K(493056K), 0,0053059 secs] [Times: user=0,05 sys=0,00
>> real=0,00 secs]
>>
>>
>> New logging:
>>
>> #0: [GC (System.gc()) #0: [SoftReference, 0 refs, 0,0001244 secs]#0:
>> [WeakReference, 8 refs, 0,0001069 secs]#0: [FinalReference, 5 refs,
>> 0,0001086 secs]#0: [PhantomReference, 0 refs, 0,0000797 secs]#0:
>> [Cleaners, 0 refs, 0,0000527 secs]#0: [JNI Weak Reference, 0 refs,
>> 0,0000401 secs][PSYoungGen: 2580K->768K(150016K)] 2580K->776K(493056K),
>> 0,0130553 secs] [Times: user=0,16 sys=0,01 real=0,01 secs]
>>
>>
>> Unless there are larger changes suggested to this patch I will push this
>> with Ramki as author.
>>
>> Thanks,
>> Bengt
>>
> -----
>
> Tony Printezis | JVM/GC Engineer / VM Team | Twitter
>
> @TonyPrintezis
> tprintezis at twitter.com <mailto:tprintezis at twitter.com>
>

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