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Bug ID: JDK-6857194 Add hotspot new perf counters to aid class loading performance measurement
JDK-6857194 : Add hotspot new perf counters to aid class loading performance measurement

Details
Type:
Enhancement
Submit Date:
2009-07-02
Status:
Closed
Updated Date:
2010-04-02
Project Name:
JDK
Resolved Date:
2010-01-15
Component:
hotspot
OS:
generic
Sub-Component:
runtime
CPU:
generic
Priority:
P4
Resolution:
Fixed
Affected Versions:
7
Fixed Versions:
hs16 (b08)

Related Reports
Backport:
Backport:
Relates:
Relates:

Sub Tasks

Description
Add new perf counters to understand class loading cost and how the class data sharing impacts the startup time.

1. time spent in defining system classes (shared and non-shared)
2. time spent in defining app classes
3. exclusive time in clinit, class linking, and verification.

                                    

Comments
EVALUATION

Instrument the class loading path and add a few perf counters for performance measurement.
                                     
2009-07-02
EVALUATION

http://hg.openjdk.java.net/jdk7/hotspot-rt/hotspot/rev/6a93908f268f
                                     
2009-07-10



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