Re: [Virtuoso-users] Space allocation for master database

[Hugh W. <hwi...@op...>]

Hi Pasquale,

Note sure what you are seeking the Master database space allocation is the size of the virtuoso.db file on disk ie 138MB and it will grow dynamically as required, thus provided you have more free disk space on the file system as the database grows you should be fine.

More important is the Memory allocation to Virtuoso for hosting the database working set with the “NumberOfBuffers” INI file param, see the RDF Performance tuning guide at:

	https://virtuoso.openlinksw.com/dataspace/doc/dav/wiki/Main/VirtRDFPerformanceTuning

and monitor the allocated and used buffers with the “status()” command run from isql

	200000 buffers, 183153 used

which is the key to performance ie being able to host the database working in memory, rather than having to read from disk which kills performance …

Best Regards
Hugh Williams
Professional Services
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> On 25 Nov 2016, at 08:20, Pasquale Di Donato <pas...@gm...> wrote:
> 
> Dear all,
> 
> I have a Virtuoso instance with some 80.000 triples.
> Now under System Admin --> Dashboard --> Space Allocation I have:
> 
> Master Database	138.00 MB, 44.61 MB free
> 
> also almost full. How can I allocate more resources to the DB?
> 
> Many thanks for any hint
> 
> Pasquale
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