If I remember correctly, there is a strict standard limit for the memory usage in V8 of around 1.7 GB, if you do not increase it manually. In one of our products we followed this solution in our deploy script: node –max-old-space-size=4096 yourFile.js There would also be a new space command but as I read … Read more
On Windows, you can use the following command to find out the defaults on the system where your applications runs. java -XX:+PrintFlagsFinal -version | findstr HeapSize Look for the options MaxHeapSize (for -Xmx) and InitialHeapSize for -Xms. On a Unix/Linux system, you can do java -XX:+PrintFlagsFinal -version | grep HeapSize I believe the resulting output … Read more
Ultimately you always have a finite max of heap to use no matter what platform you are running on. In Windows 32 bit this is around 2GB (not specifically heap but total amount of memory per process). It just happens that Java chooses to make the default smaller (presumably so that the programmer can’t create … Read more
Stack allocation is much faster since all it really does is move the stack pointer. Using memory pools, you can get comparable performance out of heap allocation, but that comes with a slight added complexity and its own headaches. Also, stack vs. heap is not only a performance consideration; it also tells you a lot … 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
There are two widely-used memory allocation techniques: automatic allocation and dynamic allocation. Commonly, there is a corresponding region of memory for each: the stack and the heap. Stack The stack always allocates memory in a sequential fashion. It can do so because it requires you to release the memory in the reverse order (First-In, Last-Out: … Read more