for the same Java program 32-bit VM always performs faster than 64-bit VM. take a peek at http://www.oracle.com/technetwork/java/hotspotfaq-138619.html#64bit_performance
At 2013-03-04 16:29:46,tran302 <91454_...@ing-life.co.jp> wrote: >Hi, > >I'm using ActiveMQ 5.4.3 on 32-bit Java, and want to upgrade to 64-bit Java. >I notice that in this version, 64-bit wrapper is not provided yet. Are there >any issues, bugs, or performance related problems reported on using 32-bit >wrapper for AMQ on 64-bit Java? I'm currently getting below message from the >wrapper when I start it on 64-bit Java: > >STATUS | wrapper | 2013/02/16 09:39:39 | --> Wrapper Started as Service >STATUS | wrapper | 2013/02/16 09:39:39 | Launching a JVM... >INFO | jvm 1 | 2013/02/16 09:39:40 | Wrapper (Version 3.2.3) >http://wrapper.tanukisoftware.org >INFO | jvm 1 | 2013/02/16 09:39:40 | Copyright 1999-2006 Tanuki >Software, Inc. All Rights Reserved. >INFO | jvm 1 | 2013/02/16 09:39:40 | >INFO | jvm 1 | 2013/02/16 09:39:40 | >INFO | jvm 1 | 2013/02/16 09:39:40 | WARNING - Unable to load the >Wrapper's native library 'wrapper.dll'. >INFO | jvm 1 | 2013/02/16 09:39:40 | The file is located on >the path at the following location but >INFO | jvm 1 | 2013/02/16 09:39:40 | could not be loaded: >INFO | jvm 1 | 2013/02/16 09:39:40 | >O:\ActiveMQ-Broker-5.4.3\bin\win32\..\..\bin\win32\wrapper.dll >INFO | jvm 1 | 2013/02/16 09:39:40 | Please verify that the >file is readable by the current user >INFO | jvm 1 | 2013/02/16 09:39:40 | and that the file has >not been corrupted in any way. >INFO | jvm 1 | 2013/02/16 09:39:40 | One common cause of this >problem is running a 32-bit version >INFO | jvm 1 | 2013/02/16 09:39:40 | of the Wrapper with a >64-bit version of Java, or vica versa. >INFO | jvm 1 | 2013/02/16 09:39:40 | This is a 64-bit JVM. >INFO | jvm 1 | 2013/02/16 09:39:40 | Reported cause: >INFO | jvm 1 | 2013/02/16 09:39:40 | >O:\ActiveMQ-Broker-5.4.3\bin\win32\wrapper.dll: Can't load IA 32-bit .dll on >a AMD 64-bit platform >INFO | jvm 1 | 2013/02/16 09:39:40 | System signals will not >be handled correctly. >INFO | jvm 1 | 2013/02/16 09:39:40 | >INFO | jvm 1 | 2013/02/16 09:39:40 | Java Runtime: Sun Microsystems >Inc. 1.6.0_38 O:\Program Files\Java\jre6 >INFO | jvm 1 | 2013/02/16 09:39:40 | Heap sizes: current=188352k >free=180477k max=466048k > >Running Environment: >JRE 64-bit build 1.6.0_38-b05 >Windows Server 2003 x64 >12GB RAM > >Also, is there any performance difference between 32-bit and 64-bit JVM in >general? Basically, I'm seeing slower performance in enqueing/dequeing >messages on 64-bit Java during testing, but I am not sure if this is because >I'm using 32-bit wrapper or 64-bit JVM is just slower. If neither, are there >any settings that we could adjust? Thank you in advance! > > > >-- >View this message in context: >http://activemq.2283324.n4.nabble.com/32-bit-JSW-on-64-bit-Java-and-performance-tp4664337.html >Sent from the ActiveMQ - User mailing list archive at Nabble.com.
