PostgreSQL

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History

Robert Haas ed0b409d22 Move "hot" members of PGPROC into a separate PGXACT array.

This speeds up snapshot-taking and reduces ProcArrayLock contention.
Also, the PGPROC (and PGXACT) structures used by two-phase commit are
now allocated as part of the main array, rather than in a separate
array, and we keep ProcArray sorted in pointer order.  These changes
are intended to minimize the number of cache lines that must be pulled
in to take a snapshot, and testing shows a substantial increase in
performance on both read and write workloads at high concurrencies.

Pavan Deolasee, Heikki Linnakangas, Robert Haas

2011-11-25 08:02:10 -05:00

backend

Move "hot" members of PGPROC into a separate PGXACT array.

2011-11-25 08:02:10 -05:00

bin

Dump an unvalidated constraint separately from its table

2011-11-24 18:40:38 -03:00

include

Move "hot" members of PGPROC into a separate PGXACT array.

2011-11-25 08:02:10 -05:00

interfaces

Applied Zoltan's patch to correctly align interval and timestamp data in ecpg's sqlda.