Re: [rvm-research] Trace mature objects without interfering gc

[Dingwen Y. <pd...@gm...>]

Thanks Daniel. Now I see.

cheers,

Dingwen

2009/6/25 Daniel Frampton <zyr...@zy...>

> First, I am assuming by your question that you are seeing a difference
> between before and after GC.
>
> Yes, objects are the number of unique objects encountered during a trace.
>
> The discrepancy you see is probably because of finalizable objects. There
> will often be a rise in visited objects over a GC due to the number of
> objects that are made strongly reachable by finalizable processing.
>
> Cheers,
> Daniel.
>
> On Thu, Jun 25, 2009 at 4:09 PM, Dingwen Yuan <pd...@gm...> wrote:
>
>> Hi Daniel,
>>
>> Thanks. But why could the "objects" be different before and after a GC?
>> Does "object" mean the number of living objects in the heap?
>>
>> cheers,
>>
>> Dingwen
>>
>> 2009/6/25 Daniel Frampton <zyr...@zy...>
>>
>>  The sanity checker runs before and after collection, performing complete
>>> transitive closures over the heap without changing any data (it stores all
>>> the required information in a hashtable).
>>>
>>> Cheers,
>>> Daniel.
>>>
>>>   On Thu, Jun 25, 2009 at 5:31 AM, Dingwen Yuan <pd...@gm...>wrote:
>>>
>>>>  Hello Chris,
>>>>
>>>> Thank you for your suggestion.
>>>>
>>>> To those who may know about sanity checker,
>>>>
>>>> It seems that sanity checker can solve my problem. But I have a question
>>>> -- why the sanity checker prints the statistics out twice for every GC and
>>>> what's their difference?
>>>>
>>>> cheers,
>>>>
>>>> Dingwen
>>>>
>>>>
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