I am lucky to hear that you use the java.util.concurrent package. I did the same with my imagemosaic-jdbc module, starting a thread for decoding each tile and putting the resulting java image in a queue.
On an AIX ppc using 4 CPUs I get a CPU usage up to 390 %, which shows me that the package works well. (I tested with an IBM sdk). I think you are going the right way. Did you look at the stack traces I sent you ? (Testing geotidy on an IBM sdk) christian Martin Desruisseaux writes: > I'm close to the end. The port of the EPSG factory is under progress and I'm > at > last looking at the "Threaded EPSG factory" work which was done a few years > ago. > In the process I rewrote some piece of code in order to take advantage of the > java.util.concurrent package, which we were not allowed to use at the time > the > threaded factories work was done. The Cache class in particular is now using > ConcurrentHashMap and BlockingQueue internally, which allow me to remove some > global locks that the previous ObjectCache still had, and maybe avoid some > holes > in usage of locks (I tested with 50 concurrent threads where each thread hits > the cache 10,000 time. In this context even tiny window of vulnerability > cause > about 10 failures by run. I fixed the ones I found on geotidy). I'm also > removing code duplication that resulted from the cohabitation of this work > with > the previous single-threaded factories. > > Martin > > > ------------------------------------------------------------------------------ > Open Source Business Conference (OSBC), March 24-25, 2009, San Francisco, CA > -OSBC tackles the biggest issue in open source: Open Sourcing the Enterprise > -Strategies to boost innovation and cut costs with open source participation > -Receive a $600 discount off the registration fee with the source code: SFAD > http://p.sf.net/sfu/XcvMzF8H > _______________________________________________ > Geotools-devel mailing list > Geotools-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/geotools-devel ------------------------------------------------------------------------------ Open Source Business Conference (OSBC), March 24-25, 2009, San Francisco, CA -OSBC tackles the biggest issue in open source: Open Sourcing the Enterprise -Strategies to boost innovation and cut costs with open source participation -Receive a $600 discount off the registration fee with the source code: SFAD http://p.sf.net/sfu/XcvMzF8H _______________________________________________ Geotools-devel mailing list Geotools-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/geotools-devel
