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My remark is not Swarm specific, but I noticed a big speed improvement
when I merged to Java 1.4 (under Windows), especially with graphics output.
But I've heard that the same is true for Linux-systems.
Norman
Petros Petrou wrote:
Dear
Mr Daniels, I am trying
to compare the performance of swarm using both Objective C and Java. For
a simple swarm-objC application the needed time is approximatelly 10 seconds
whereas the equivalent swarm-Java application needs roughly 2.5 minutes.
I know Java is slow but I order to find if there is anything I could do
to improve Java's performance (with Swarm) I was going through the support-mailing
list and I found the following posted by you (Marcus G. Daniels) on Jun
27, 2001.
/************************************************************************************/
In today's snapshot there are changes that reduce the `root set' of the
conservative
garbage collector in GCJ to a bare minimum. That speeds up
some of the
Java models I've been using a fair amount, e.g. 10-20%.
I'm not
going to jump in to the Java/Objective-C conversions issue
immediately,
but it's coming in to the sights.. That could easily double
the performance
of most Java models.
/************************************************************************************/I
am working with RedHat 7.1 and in order to get swarm for Objective C and
Java to work I did the following:1)
Installed hdf5-1.2.2.2-1.i386.rpm
2) Installed blt-2.4u-4.i386.rpm
3) Installed swarm-hdf5-2.1.75.20010613-1.RH7.jdk13.i686.rpm
4) Copied the file libhdf5.la into
the /usr/bin directoryAND5)
Installed jdk-1.3.1_02.i386.rpm
6) Installed swarm-hdf5-jdk-2.1.75.20010613-1.RH7.jdk13.i686.rpm
7) Created symbolic link within the
/usr/local directory that is pointing to /usr/java/jdk1.3.1_02 Could
you please tell me if there is anything else I could possibly do to improve
Java's performance for Swarm applications? Many
Thanks,Petros Petrou
--
Norman Ehrentreich (economist)
Martin-Luther-University Halle-Wittenberg (Germany)
Dept. of Banking and Finance
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