tion, but does it also support
intra-query parallelization, i.e. using multiple threads to compute the result
of a single query? If yes, which parameter is used to configure this?
>
>
> Cheers,
>
> Lorenz
>
> On 12.09.2016 05:57, Kingsley Idehen wrote:
>> On 9/10/16 10:41 PM, giacom...@libero.it
>> wrote:
>>
>>> So, I have a bunch of questions about Virtuoso.
>>>
>>> * Are SPARQL queries performed concurrently (using the standard
>>> virtuoso.ini configuration)?
>>>
>> Yes, Virtuoso is highly multi-threaded. In addition, it has
>> vectorized query execution i.e., many query batches per thread, handled
concurrently .
>>
>>> * Are Virtuoso transactions autocommittable, or there aren't any
>>> kind of transactions when connecting to the ODBC driver?
>>>
>> Depends, by default you have Read Committed Isolation level.
>>
>>> * Does Virtuoso automatically performs triple indexing before query data?
>>>
>> No, it has indexes in place.
>>
>>
>>> In
>>> some systems I have to configure it manually.
>>> * Does the usage of ODBC degradates the benchmarking of Virtuoso's
>>> SPARQL query or the time required to store the triples within a given
named graph?
>>>
>> No, if anything that's faster than HTTP.
>>
>> Links:
>>
>> [1]
>> http://docs.openlinksw.com/virtuoso/isolation/
>>
>> [2]
>>
>> http://wikis.openlinksw.com/VirtuosoWikiWeb/ChangeVirtuosoSDefaultTra
>> nsactionIsolationLevel
>>
>> [3]
>> http://docs.openlinksw.com/virtuoso/fn_log_enable.html
>>
>> [4]
>>
>> http://virtuoso.openlinksw.com/dataspace/doc/dav/wiki/Main/VirtRDFPer
>> formanceTuning
>>
>>
>> [5]
>>
>> http://virtuoso.openlinksw.com/dataspace/doc/dav/wiki/Main/VirtBulkRD
>> FLoader#Running
>>
>> multiple Loaders
>>
>>
>> Kingsley
>>
>>
>>> Thanks in advance for any support,
>>>
>>>> JackB
>>>>
>>>
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>>>
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>>> https://lists.sourceforge.net/lists/listinfo/virtuoso-users
>>>
>>>
>>>
>>
>>
>>
>> -
>> -
>>
>>
>>
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>>
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>
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