Code Review Request: 6871109: G1: remove the concept of the scan only prefix

john cuthbertson - Sun Microsystems John.Cuthbertson at Sun.COM
Fri Aug 14 17:47:51 PDT 2009

Hi Everyone,

Can I have a couple of volunteers review the changes to remove the scan 
only prefix code? The changes can be found at

In particular pay close attention to the changes in 
g1CollectorPolicy.cpp (specifically 
G1CollectorPolicy::calculate_young_list_target_config) where the code 
that calculates the length of the young list (the innermost loop) had to 
be separated from the code that varied the size of the so-prefix.

Testing: refworkload, SPECjbb2005 (with fixed and variable sized young 
generation size). I also enabled the tracing the young list config code 
and compared the output from a reference workspace.



More information about the hotspot-gc-dev mailing list