thank you ,no matter how much -xmx size I set , the mem of xmx what I set 
 is  costed all!
在 2016年5月21日星期六 UTC+8上午6:08:27,[email protected]写道:
>
> Hi,
>
> Orient has two types of memory: heap and disk-cache. If the heap is too 
> low you risks the memory overflow because you have less memory than what 
> you need. The heap memory is necessary. The disk-cache is used for the 
> performances, more higher is the memory and more higher are the 
> performances, if you don't have enough disk-cache, the performances 
> descrease. The disk-cache must be at most as large as the database. You 
> have to increase the heap memory and decrease the disk-cache memory.
>
> Hope it helps.
>
> Regards,
> Michela
>

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