Обсуждение: pgsql-server/src backend/commands/vacuum.c bac ...

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pgsql-server/src backend/commands/vacuum.c bac ...

От
tgl@postgresql.org (Tom Lane)
Дата:
CVSROOT:    /cvsroot
Module name:    pgsql-server
Changes by:    tgl@postgresql.org    02/09/20 15:56:01

Modified files:
    src/backend/commands: vacuum.c vacuumlazy.c
    src/backend/storage/freespace: freespace.c
    src/backend/storage/smgr: smgr.c
    src/include/storage: freespace.h

Log message:
    Performance improvement for MultiRecordFreeSpace on large relations ---
    avoid O(N^2) behavior.  Problem noted and fixed by Stephen Marshall <smarshall@wsicorp.com>,
    with some help from Tom Lane.