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semweb and http compile now (but they don't work properly yet).

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Vitor Santos Costa
2010-07-15 23:35:37 +01:00
parent 12fe06aa2e
commit 6183ff0282
158 changed files with 82184 additions and 1 deletions
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packages/semweb/NOTES Normal file
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Indexing
========
The indexing omits the table BY_SPO, indexing on all three arguments but
uses BY_SP instead. It was thought not to gain that much. This
assumption was verified on real data (100,000 triple). Introducing
BY_SPO gave a slowdown of about 10%. Appearently the relatively high cost
for indexing on the complicated object field outweights the benefits.
The patch is left for reference in BY_SPO.diff. Note that after applying
this patch the test cases no longer pass. As the failing cases were
irrelevant to the performance test I never bothered fixing this due to
the failed performance test.