postgres

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History

Andres Freund 45e191e3aa Improve scalability of md.c for large relations.

So far md.c used a linked list of segments. That proved to be a problem
when processing large relations, because every smgr.c/md.c level access
to a page incurred walking through a linked list of all preceding
segments. Thus making accessing pages O(#segments).

Replace the linked list of segments hanging off SMgrRelationData with an
array of opened segments. That allows O(1) access to individual
segments, if they've previously been opened.

Discussion: <20140331101001.GE13135@alap3.anarazel.de>
Reviewed-By: Peter Geoghegan, Tom Lane (in an older version)

2016-09-08 17:18:46 -07:00

backend

Improve scalability of md.c for large relations.

2016-09-08 17:18:46 -07:00

bin

Allow pg_dump to dump non-extension members of an extension-owned schema.

2016-09-08 13:12:01 -04:00

common

Move code shared between libpq and backend from backend/libpq/ to common/.

2016-09-02 13:49:59 +03:00

fe_utils

Teach appendShellString() to not quote strings containing "-".