Could not reserve enough space for object heap

Question

I am getting the following exception repeatedly each time I try to run the program.

Error occurred during initialization of VM

Could not reserve e

Answer 1

Error occurred during initialization of VM Could not reserve enough space for 1572864KB object heap

I changed value of memory in settings.grade file 1536 to 512 and it helped

Answer 2

I know there are a lot of answers here already, but none of them helped me. In the end I opened the file /etc/elasticsearch/jvm.options and changed:

-Xms2G
-Xmx2G

to

-Xms256M
-Xmx256M

That solved it for me. Hopefully this helps someone else here.