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From "Regis Xu (JIRA)" <j...@apache.org>
Subject [jira] Created: (HARMONY-4950) [classlib][performance] read property file from jar file is very slow at first time
Date Tue, 16 Oct 2007 09:43:50 GMT
[classlib][performance]  read property file from jar file is very slow at first time
------------------------------------------------------------------------------------

                 Key: HARMONY-4950
                 URL: https://issues.apache.org/jira/browse/HARMONY-4950
             Project: Harmony
          Issue Type: Improvement
            Reporter: Regis Xu


below is test case:
=============start=============
Properties pro = new Properties();
         URL url = new

URL("jar:file:/home/bahamut/harmony/trunk/deploy/jdk/jre/lib/boot/jndi.jar!/jndi.properties");
         InputStream in = url.openStream();
         long start = System.currentTimeMillis();
         pro.load(in);
         long end = System.currentTimeMillis();
         System.out.println("time: " + (end - start));
         in.close();

         pro = new Properties();
         url = new

URL("jar:file:/home/bahamut/harmony/trunk/deploy/jdk/jre/lib/boot/jndi.jar!/jndi.properties");
         in = url.openStream();
         start = System.currentTimeMillis();
         pro.load(in);
         end = System.currentTimeMillis();
         System.out.println("time: " + (end - start));
         in.close();
=================end===============

output of ri:
time: 1
time: 0

output of harmony:
time: 231
time: 1 

clearly, there is huge space to improve, maybe it's problem from archive or io module.

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