Increase Java Heap Size in Eclipse - Using Virtual Memory

Question

I run the program in Eclipse (Windows) and need a relatively huge amount of memory. Passing -Xmx1500m to the program seems insufficient, while Eclipse does not allow me to assign a larger value. Having this configuration, I get an exception in memory. I increased the size of virtual memory to 40GB . There is no way to make this memory available to my program? I easily did this in C # for almost the same job.

Answer 1

you need to run 64Bit vm to allow more than about -Xmx1500m

You can specify this in the Launch Options for your program and do not need to apply it in eclipse.ini, which is intended for the eclipse itself.

BUT: it’s nice to give java-vm more memory than the real (physical, free) memory on your system, because the GC will go through many memory areas when it works, and this will lead to reading / writing memory from / to disk - means exchange. And that again will lead to a very bad job. In this case, you should think about what memory consumes, and if there is a way to manage this data from the outside - on disk or in some MemoryBuffers.

Answer 2

ru using a 32 bit JVM or 64 bit? use the 64-bit JVM. I'm not sure about 64 bit size limits, but definitely more than 32 bits.

try the following: java -d64 -Xms512m -Xmx60g YourProgram

it sets 60gb as the maximum heap size.

Answer 3

You can adjust the heap size in the "Run configuration dialog".

Answer 4

I think you need to increase the memory available for eclipse.

Change the -Xmx parameter in the eclipse.ini file (on a Windows computer).

Answer 5

If you have an unbuttoned eclipse surge, find eclipse.ini in change it

Answer 6

Go to the eclipse root folder where the eclipse.exe file is left and you will see the eclipse configuration file (eclipse.ini) that will open this file, and you will need the following changes