Ignite on-heap & off-heap caches

[ashishb888 <as...@gmail.com>]

I have below question:

Do both on-heap & off-heap caches use memory from data regions (by setting
initial & max 
of DataRegionConfiguration)? 

Does Ignite use heap provided to the application (-Xms & -Xmx) for cache
storage? 



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Re: Ignite on-heap & off-heap caches

[ashishb888 <as...@gmail.com>]

Thank you Andrei.

So for on-heap cache I need set Xms and -Xmx option to allocate the memory.



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Re: Ignite on-heap & off-heap caches

[Andrei Aleksandrov <ae...@gmail.com>]

Hi,

No, heap and off-heap memory are different features.

*Heap *memory uses -Xms and -Xmx option to allocate the memory used for 
different operations and generally can't be used for data storing (in 
case of you don't set on-heap caching). Java GC will work with current 
memory.

*Off-heap* memory uses *initial *and *max *properties for region size 
that should be set in the data region configuration. This memory will be 
used for data storage. Java GC will not work with current memory.

You can read more here:

https://apacheignite.readme.io/docs/memory-architecture

BR,
Andrei

11/28/2019 3:36 PM, ashishb888 пишет:
> I have below question:
>
> Do both on-heap & off-heap caches use memory from data regions (by setting
> initial & max
> of DataRegionConfiguration)?
>
> Does Ignite use heap provided to the application (-Xms & -Xmx) for cache
> storage?
>
>
>
> --
> Sent from: http://apache-ignite-users.70518.x6.nabble.com/