CMS collection keep working during holiday

[Y Srinivas Ramakrishna]

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
>