3. SMP Behaviour on Protein Sequence Data


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The following table shows the behavior of SMP on a 685MB Protein Sequence document for user-defined XPath queries. The following values are listed.

Projection benchmarks on 685MB Protein Sequence document


Runtime of SPEX for queries P1-P4 on 685MB document with and without projection

The projected documents are piped directly into the SPEX engine.

Throughput of SPEX for queries P1-P4 on 685MB document with and without projection

The projected documents are piped directly into the SPEX engine.

Queries

P1:  /ProteinDatabase//genetics[contains(mobile-element/text(),"retrovirus") or intron-status/text()="absent" or gene-origin/text()!="unknown"]/note
P2:  /ProteinDatabase/ProteinEntry[contains(descendant::group/text(),"Sao Paulo") and contains(sequence/text(),"LLLL") ]/header/uid
P3:  /*//reference/note[contains(child::text(),"Escherichia coli")]
P4:  /*//reference[contains(child::note/text(),"Escherichia coli")]//note

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