It's experimental at the moment, so no docs.
Sorry, the actual prefixes are "nioMemFS:" and "nioMemLZF:"
On 2013-03-11 00:01, Sebastian B wrote:
Thank you very much. I'm wondering that this mode is storing data in a
file on disk.
I thought that it is an in memory off-heap storage layer?
Are there some documentations around?
Best,
Sebastian
Am Samstag, 9. März 2013 08:10:45 UTC+1 schrieb Noel Grandin:
Java tends to be quite promiscous with it's memory usage.
You could try using the new experimental nioMem: mode, which
stores the data outside the GC heap in the native process heap,
but you'd still need to limit the VM's memory usage with -XMx
On Fri, Mar 8, 2013 at 9:40 PM, Sebastian B <[email protected]
<javascript:>> wrote:
Hi there,
currently I'm trying to use H2 as a buffer for some read
mostly tables in an external PostgresSQL database.
The smallest of my data-sources (<VARCHAR, VARCHAR, INT>) got
a size of around 110MB on disk managed by postgres.
Now I'm a bit curious, because I can't see why H2 needs around
850 MB to represent that data in main memory.
In addition to the default memory mode, I also tried to use
..:memFS or ...memLZF, but couldn't decrease the memory
consumption much.
My problem is, that I got some much bigger data-sources as
well that I have to put into main memory.
Thanks and best regards,
Sebastian
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