class metadata

[kirk]

Hi Ramki,

Thanks. Running the default collectors so I'm believing that these 
should be collected. These are from the C++ layer?

Regards,
Kirk

Y Srinivas Ramakrishna wrote:
> These are class meta-data that live in the perm gen.
>
> -- ramki
>
> ----- Original Message -----
> From: kirk <kirk.pepperdine at gmail.com>
> Date: Monday, October 13, 2008 8:56 am
> Subject: Re: CMS collection keep working during holiday
> Cc: hotspot-gc-dev at openjdk.java.net
>
>
>   
>> Hi,
>>
>> I've got a histogram that includes a number of classes that I've not 
>> seen at the top of a histogram just yet. This is a pre-gc histogram 
>> from 
>> the 1.5.0_15. Any thoughts on what might cause these to build up?
>>
>>       1 Object Histogram:
>>       2
>>       3 Size    Count   Class description
>>       4 -------------------------------------------------------
>>       5 2009570160      35394   int[]
>>       6 25703600        237926  char[]
>>       7 23512384        20129   byte[]
>>       8 18761568        144582  * ConstMethodKlass   <----
>>       9 10416360        144582  * MethodKlass            <----
>>      10 8144800 194428  * SymbolKlass                   <----
>>      11 7925040 13619   * ConstantPoolKlass            <----
>>      12 6832800 284700  java.lang.String
>>      13 5619232 13619   * InstanceKlassKlass            <----
>>      14 4503280 11914   * ConstantPoolCacheKlass    <----
>>      15 3498664 37130   java.util.HashMap$Entry[]
>>      16 3116000 97375   java.util.TreeMap$Entry
>>      17 3067808 37737   java.lang.Object[]
>>      18 2498800 31235   java.lang.reflect.Method
>>      19 2364600 98525   java.util.HashMap$Entry
>>      20 1683520 42088   org.apache.velocity.runtime.parser.Token
>>      21 1626552 5532    * MethodDataKlass          <----
>>
>> Regards,
>> Kirk Pepperdine
>>
>>     
>
>