Hi Ward,
Can you please provide more details on the form of the query being
run, is this a SQL and SPARQL query and what interface is this being
run via ?
Note you can use the virtuoso explain function to obtain details on
the execution plan for queries as detailed at:
http://docs.openlinksw.com/virtuoso/fn_explain.html#(NULL)
Post the query and the explain output back to the mailing list for
analysis ...
Best Regards
Hugh Williams
Professional Services
OpenLink Software
On 15 Jul 2008, at 17:13, Ward Blondé wrote:
Hi,
I was running a query, which took 20 seconds to return the answer.
After
running a similar query in between, I was running the same query,
which
took only 2 seconds any more. What could be the reason of this?
And what would be a good way to test the worst performance of the
queries I write?
thanks,
Ward
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