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FYI, the list of proposed queries for testing shared scans is here:

https://dev.lsstcorp.org/trac/wiki/db/Queries/testingSharedScans

The idea is to test a mix of scan queries that include some queries of different classes:
some low CPU (scan with a single filtering predicate)
some medium CPU (scan with multiple predicates and some math)
some high CPU (scan that proceeds slower than 50%(?) of sequential I/O)

-Daniel

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