![]() The most useful parts for memory profiling are the Memory section in the Monitor tab, showing the overall heap usage (where you can also make a Heap Dump which produces a double-clickable list of objects and their references), and the Memory button on the Sampler tab, which opens kind of a live version of the Heap Dump. JVisualVM lets you attach to any local Java process and inspect the state. It is in the bin/ directory of the Java Development Kit (it does not come with the JRE, also known as Java Runtime Environment). JDK6 and newer come with a quite useful tool called jvisualvm. fiji -Dpatch.ij1 = false -cp jars/javassist.jar -cp jars/fiji-compat.jar \ -cp jars/ij.jar -main-class fiji.MemoryProfiler - ij.ImageJ At each exit, it reports the relative memory usage, the total memory usage, and the exit point of the current method. This memory profiler instruments all method entries and exists using javassist. Javassist-basedĪ quite versatile method is to use (and possibly modify) the class fiji.MemoryProfiler in fiji-compat.jar. Memory profilingĮven if Java’s memory management prevents most memory issues (unaligned writes, access to uninitialized/released memory), there is a chance of memory leaks: constant accumulation of objects over time, most likely because there are stale references to them. You might find Shark 4 useful if you’re on macOS. ![]() DOWNLOAD JPROFILER ECLIPSE PLUGIN MANUALSee the OProfile manual for more information. To get information about source files and line numbers, also pass the -g option to opreport. If you get entries like “anon (tgid:10014 range:0x100000-0x103000) you probably did not create a user account oprofile in a group oprofile before starting the OProfile daemon. ![]()
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