Thanks, I'll give it a try. 06.10.10, 14:47, "Toke Eskildsen" <t...@statsbiblioteket.dk>:
> On Wed, 2010-10-06 at 12:22 +0200, Sergey wrote: > > When running application on Windows XP 32 bit machine the search time is > 0.5 second. JVM is IBM Java 5 for 32 bit. > > But when running the same application on much more powerfull Windows > Server 2007 64 bit machine the search time is 3 seconds. JVM is IBM Java 5 > for 64 bit. > > If your memory allocation (-Xmx) is the same, the 64 bit machine will > have less available heap due to the 64 bit pointers. This could result > in excessive garbage collection. Try increasing the memory allocation > for the 64 bit machine with 50% or more. > > Besides that, there should be no significant difference and you're left > with profiling. I recommend Process Explorer > http://technet.microsoft.com/en-us/sysinternals/bb896653.aspx > for general system and single process load inspection. I/O is often the > sinner, så check read and write calls. > > Switching to the Java part, try using visualvm > https://visualvm.dev.java.net/ > with the Visual GC-plugin to see where the time is spend. > > - Toke Eskildsen > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org > For additional commands, e-mail: java-user-h...@lucene.apache.org > > > --------------------------------------------------------------------- To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org For additional commands, e-mail: java-user-h...@lucene.apache.org
