Question about MemoryService class.

[Colin(Du Li)]

Hi, ramki,

Thanks you for your reply.
Does G1 mean the "generation 1" in generational GC?
Why do you think it might be moot? I wonder if you can give more
explanations.
Thanks.

Colin.

y.s.ramakrishna wrote:
> 
> 
> of course, G1 and the possibilities/flexibility it allows
> probably makes something like this somewhat moot (at least as
> far as my intuition goes here).
> 
> -- ramki
> 
> ----- Original Message -----
> From: Y Srinivas Ramakrishna <Y.S.Ramakrishna at Sun.COM>
> Date: Saturday, February 7, 2009 1:09 pm
> Subject: Re: Question about MemoryService class.
> To: "Colin(Du Li)" <dawn2004 at gmail.com>
> Cc: hotspot-dev at openjdk.java.net
> 
> 
>> Hi Colin --
>> 
>> If you have a use case where 3 or more generations will
>> provide distinct advantages, please feel free to
>> propose an OpenJDK project for this and we'll be
>> happy to help you navigate around in the relevant parts of
>> the source code so you can get this done. The basic
>> functionality will likely be quite straightforward,
>> if tedious in some of the details, and in limiting
>> the performance impact upon the basic 2 generation system.
>> 
>> -- ramki
>> 
>> ----- Original Message -----
>> From: "Colin(Du Li)" <dawn2004 at gmail.com>
>> Date: Saturday, February 7, 2009 11:08 am
>> Subject: Re: Question about MemoryService class.
>> To: hotspot-dev at openjdk.java.net
>> 
>> 
>> > Thanks a lot！
>> > I have fixed it.
>> > To constrain the two-generation collector makes the system less
>> extensible.
>> > I wonder this part will be improve the the future.
>> > 
>> > 
>> > mandy.chung wrote:
>> > > 
>> > > Colin(Du Li) wrote:
>> > > 
>> > >>Hi, guys.
>> > >>
>> > >>Could you give me some information about MemoryService in hotspot. 
>> It
>> > seems
>> > >>like a tool to monitor the memory usage, right? But it only 
>> support 
>> > 2
>> > >>generations. I wanna divide the heap into three generations, so it 
>> gives
>> > me
>> > >>error information. Can I turn it off? Will it cause problems if I 
>> 
>> > turn it
>> > >>off. How can I turn it off without side effect?
>> > >>  
>> > >>
>> > > The memoryService and memory pool implementation is the VM support 
>> 
>> > for 
>> > > the java.lang.management API.  
>> > > 
>> > > You need to change the current implementation to support 3 
>> > generations.  
>> > > The memory pool/service implementation is not limited to 2
>> generations.
>> > > 
>> > > Mandy
>> > > 
>> > >>Thanks a lot!
>> > >>
>> > >>Colin(Du Li)
>> > >>  
>> > >>
>> > > 
>> > > 
>> > > 
>> > 
>> > -- 
>> > View this message in context:
>> http://www.nabble.com/Question-about-MemoryService-class.-tp21880830p21891770.html
>> > Sent from the OpenJDK Hotspot Virtual Machine mailing list archive 
>> at 
>> > Nabble.com.
>> > 
> 
> 

-- 
View this message in context: http://www.nabble.com/Question-about-MemoryService-class.-tp21880830p21892968.html
Sent from the OpenJDK Hotspot Virtual Machine mailing list archive at Nabble.com.