Introduce compact WAL record for the common case of commit (non-DDL).
XLOG_XACT_COMMIT_COMPACT leaves out invalidation messages and relfilenodes,
saving considerable space for the vast majority of transaction commits.
XLOG_XACT_COMMIT keeps same definition as XLOG_PAGE_MAGIC 0xD067 and earlier.
Leonardo Francalanci and Simon Riggs
Branch
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master
Details
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http://git.postgresql.org/pg/commitdiff/465883b0a2b4236ba6b31b648a9eabef3b7cdddb
Modified Files
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src/backend/access/transam/xact.c | 245 +++++++++++++++++++++++++-----------
src/backend/access/transam/xlog.c | 11 ++-
src/include/access/xact.h | 15 ++-
src/include/access/xlog_internal.h | 2 +-
4 files changed, 192 insertions(+), 81 deletions(-)