“Allocation Failure” is a cause of GC cycle to kick in. “Allocation Failure” means that no more space left in Eden to allocate object. So, it is normal cause of young GC. Older JVM were not printing GC cause for minor GC cycles. “Allocation Failure” is almost only possible cause for minor GC. Another reason … Read more
The RES value isn’t how much memory the process is using, but how much actual RAM it uses. This doesn’t include swapped pages and allocated but unmapped pages. Make sure you have enough free memory on the system itself, you can run free, or even top should print above how much memory is in use. The output of top suggests that the … Read more
Because Java is a garbage collected language you cannot predict when (or even if) an object will be destroyed. Hence there is no direct equivalent of a destructor. There is an inherited method called finalize, but this is called entirely at the discretion of the garbage collector. So for classes that need to explicitly tidy up, … Read more
This message means that for some reason the garbage collector is taking an excessive amount of time (by default 98% of all CPU time of the process) and recovers very little memory in each run (by default 2% of the heap). This effectively means that your program stops doing any progress and is busy running … Read more