Yes SerializingCacheProvider is the off heap caching provider. 

Can you do some more digging into what is using the heap ? 

Cheers
A

-----------------
Aaron Morton
Freelance Developer
@aaronmorton

On 1/06/2012, at 9:52 PM, ruslan usifov wrote:

Hello

I begin use SerializingCacheProvider for rows cashing, and got
extremely JAVA heap grows. But i think that this cache provider
doesn't use JAVA heap