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JDK-6233917 : Change default heap sizes based on performance data

Details
Type:
Enhancement
Submit Date:
2005-02-28
Status:
Resolved
Updated Date:
2010-04-02
Project Name:
JDK
Resolved Date:
2005-11-22
Component:
hotspot
OS:
linux_redhat_9.0
Sub-Component:
gc
CPU:
x86
Priority:
P3
Resolution:
Fixed
Affected Versions:
6
Fixed Versions:

Related Reports
Relates:

Sub Tasks

Description
As part of the mustang performance work we ran a bunch of apps with varying heap numbers to gauge the impact on startup.  After much analysis and debate we arrived at a size of 1mb for the young generation and 4mb for the tenure generation.
For reference here's the heap size (on linux) of the set of apps we used after startup:

  abeille        576    2520
  columba        960   11948
  jdiskreport    576    6152
  jedit          576    2268
  limewire       576    4144
  notepad        576    1408
  photomesa      576    3372
  reportmill     576    6248
               -----  ------
  Average        624    4757 

This resulted in an average startup gain of 5%.
###@###.### 2005-2-28 19:37:32 GMT

                                    

Comments
EVALUATION

I'll change the default values as requested.
                                     
2005-10-31



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