14 lines
632 B
Plaintext
14 lines
632 B
Plaintext
Indexing
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========
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The indexing omits the table BY_SPO, indexing on all three arguments but
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uses BY_SP instead. It was thought not to gain that much. This
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assumption was verified on real data (100,000 triple). Introducing
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BY_SPO gave a slowdown of about 10%. Appearently the relatively high cost
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for indexing on the complicated object field outweights the benefits.
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The patch is left for reference in BY_SPO.diff. Note that after applying
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this patch the test cases no longer pass. As the failing cases were
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irrelevant to the performance test I never bothered fixing this due to
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the failed performance test.
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