> Gesendet: Sonntag, 29. März 2015 um 15:50 Uhr
> Von: "Bert Massop" <bert.mas...@gmail.com>
> An: support@freenetproject.org
> Betreff: Re: [freenet-support] data store > 500GB?
>
> On 28-03-15 20:36, Steve Dougherty wrote:
> > On 03/28/2015 12:07 PM, Eric Chadbourne wrote:
> >> Hi All,
> >>
> >> Is it possible to use more than a 500GB data store?
> >>
> >> On a fresh installation the largest selectable value for the 
> >> datastore is 500GB.  I would like to use 3TB if possible.  When I 
> >> attempt to change the value via the web page I get an out of memory 
> >> error.  If I change the value in freenet.ini the application won’t 
> >> start.  I may not be setting the value correctly.
> >>
> >> Internal error: please report
> >>
> >> java.lang.OutOfMemoryError: Java heap space
> > 
> > What is "Maximum memory usage" under "Wrapper" on the Configuration >
> > Core settings page set to? For a store that big it seems like it'll have
> > to be higher.
> 
> I think this correctly identifies the problem at hand: IIRC, bloom
> filters contribute to a memory usage of 1/3000th of the data store size,
> which would be around 1 GB of RAM for a 3TB data store — not counting
> memory consumption of other parts of Freenet, Java memory management
> overhead, etc.
> 
> Your problem can probably be solved by raising the memory limit.* Apart
> from the limits imposed by your storage and RAM capacities, there is no
> limit to datastore size (apart from some 2^63 bytes limits imposed by
> internal representation, but that should never be an issue in the
> foreseeable future).
> 
> Keep in mind that other settings may need additional tweaking for
> optimal performance when such a large datastore is used.
> 
> Thank you for running Freenet!
> 
> -- Bert

I always got these out memory errors when I tried to run a 3TiB node under 
Windows 7 64-bit, regardsless of the said settings. When I switched to Linux 
(Kubuntu 14.04) it worked immediately. Could it also depend on the java 
version? I'm using OpenJDK under Linux now.
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