What %age of memory should Eden space consume

Hello Raman,

There is no one-size-fits-all answer to the question of what percentage of memory the Eden space should consume, as it depends on the specific requirements and characteristics of the application.

However, as a general rule of thumb, the Eden space should be sized to accommodate the rate of object allocation in the application. If the application has a high rate of object allocation, then a larger Eden space may be required to avoid frequent garbage collection cycles. On the other hand, if the allocation rate is lower, then a smaller Eden space may be sufficient.

In terms of the default size of the Eden space, the JVM typically sets it to a value that is appropriate for most applications based on the available heap size. In your case, if the default size of the Eden space is taking up 8GB out of a total heap size of 10GB, then it suggests that the JVM has determined that a larger Eden space is required for the specific application you are running.

As for whether it is good practice to have a larger Eden space size, it depends on the requirements of the application. In general, a larger Eden space can help to reduce the frequency of garbage collection cycles, which can improve the performance of the application. However, it is important to balance the size of the Eden space with the size of other memory spaces in the JVM, such as the Survivor space and the Tenured space, to ensure that memory is being used efficiently.

Ultimately, the decision of how to size the Eden space should be based on careful analysis and profiling of the application's memory usage characteristics and should take into account factors such as the rate of object allocation, the frequency of garbage collection cycles, and the available memory resources.

Hello Raman!

 Here is a success story of a very major corporation whose GC performance immensely benefitted by reducing Young Generation size.