harmony-commits mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Aleksey Shipilev (JIRA)" <j...@apache.org>
Subject [jira] Created: (HARMONY-5920) [classlib][pack200][performance] ArrayList usage optimization
Date Sat, 19 Jul 2008 08:58:31 GMT
[classlib][pack200][performance] ArrayList usage optimization
-------------------------------------------------------------

                 Key: HARMONY-5920
                 URL: https://issues.apache.org/jira/browse/HARMONY-5920
             Project: Harmony
          Issue Type: Improvement
         Environment: Latest pack200
            Reporter: Aleksey Shipilev


1. Microbenchmark on Sun 1.6.0_05 shows that iterating ArrayList via iterators is 3x slower
than iterating via get(). This issue eliminates iterator() in favor of get().
2. ArrayList-s are frequently instantiated with default capacity, even when the storage size
is known. This issue sets the default capacities where applicable.

-- 
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.


Mime
View raw message