pgsql: Increase the default value of cpu_index_tuple_cost from 0.001 to

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От tgl@postgresql.org (Tom Lane)
Тема pgsql: Increase the default value of cpu_index_tuple_cost from 0.001 to
Дата
Msg-id 20060605030342.613209FA5C3@postgresql.org
обсуждение исходный текст
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Дерево обсуждения 
Log Message:
-----------
Increase the default value of cpu_index_tuple_cost from 0.001 to 0.005.
This shouldn't affect simple indexscans much, while for bitmap scans that
are touching a lot of index rows, this seems to bring the estimates more
in line with reality.  Per recent discussion.

Modified Files:
--------------
    pgsql/doc/src/sgml:
        config.sgml (r1.60 -> r1.61)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/config.sgml.diff?r1=1.60&r2=1.61)
    pgsql/src/backend/utils/misc:
        postgresql.conf.sample (r1.178 -> r1.179)

(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/utils/misc/postgresql.conf.sample.diff?r1=1.178&r2=1.179)
    pgsql/src/include/optimizer:
        cost.h (r1.74 -> r1.75)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/include/optimizer/cost.h.diff?r1=1.74&r2=1.75)

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