[COMMITTERS] pgsql: Make WAL segment size configurable at initdb time. - Mailing list pgsql-committers
| From | Andres Freund |
|---|---|
| Subject | [COMMITTERS] pgsql: Make WAL segment size configurable at initdb time. |
| Date | |
| Msg-id | E1duXBW-0003QB-4d@gemulon.postgresql.org Whole thread Raw |
| Responses |
Re: pgsql: Make WAL segment size configurable at initdb time.
(David Steele <david@pgmasters.net>)
|
| List | pgsql-committers |
Make WAL segment size configurable at initdb time. For performance reasons a larger segment size than the default 16MB can be useful. A larger segment size has two main benefits: Firstly, in setups using archiving, it makes it easier to write scripts that can keep up with higher amounts of WAL, secondly, the WAL has to be written and synced to disk less frequently. But at the same time large segment size are disadvantageous for smaller databases. So far the segment size had to be configured at compile time, often making it unrealistic to choose one fitting to a particularly load. Therefore change it to a initdb time setting. This includes a breaking changes to the xlogreader.h API, which now requires the current segment size to be configured. For that and similar reasons a number of binaries had to be taught how to recognize the current segment size. Author: Beena Emerson, editorialized by Andres Freund Reviewed-By: Andres Freund, David Steele, Kuntal Ghosh, Michael Paquier, Peter Eisentraut, Robert Hass, Tushar Ahuja Discussion: https://postgr.es/m/CAOG9ApEAcQ--1ieKbhFzXSQPw_YLmepaa4hNdnY5+ZULpt81Mw@mail.gmail.com Branch ------ master Details ------- https://git.postgresql.org/pg/commitdiff/fc49e24fa69a15efacd5b8958115ed9c43c48f9a Modified Files -------------- configure | 54 ----- configure.in | 31 --- contrib/pg_standby/pg_standby.c | 115 +++++++++-- doc/src/sgml/backup.sgml | 2 +- doc/src/sgml/installation.sgml | 14 -- doc/src/sgml/ref/initdb.sgml | 15 ++ doc/src/sgml/wal.sgml | 13 +- src/backend/access/transam/twophase.c | 3 +- src/backend/access/transam/xlog.c | 255 ++++++++++++++---------- src/backend/access/transam/xlogarchive.c | 14 +- src/backend/access/transam/xlogfuncs.c | 10 +- src/backend/access/transam/xlogreader.c | 32 +-- src/backend/access/transam/xlogutils.c | 36 ++-- src/backend/bootstrap/bootstrap.c | 15 +- src/backend/postmaster/checkpointer.c | 5 +- src/backend/replication/basebackup.c | 34 ++-- src/backend/replication/logical/logical.c | 2 +- src/backend/replication/logical/reorderbuffer.c | 19 +- src/backend/replication/slot.c | 2 +- src/backend/replication/walreceiver.c | 14 +- src/backend/replication/walreceiverfuncs.c | 4 +- src/backend/replication/walsender.c | 16 +- src/backend/utils/misc/guc.c | 20 +- src/backend/utils/misc/pg_controldata.c | 5 +- src/backend/utils/misc/postgresql.conf.sample | 2 +- src/bin/initdb/initdb.c | 58 +++++- src/bin/pg_basebackup/pg_basebackup.c | 7 +- src/bin/pg_basebackup/pg_receivewal.c | 16 +- src/bin/pg_basebackup/receivelog.c | 36 ++-- src/bin/pg_basebackup/streamutil.c | 76 +++++++ src/bin/pg_basebackup/streamutil.h | 2 + src/bin/pg_controldata/pg_controldata.c | 15 +- src/bin/pg_resetwal/pg_resetwal.c | 55 +++-- src/bin/pg_rewind/parsexlog.c | 30 ++- src/bin/pg_rewind/pg_rewind.c | 12 +- src/bin/pg_rewind/pg_rewind.h | 1 + src/bin/pg_test_fsync/pg_test_fsync.c | 7 +- src/bin/pg_upgrade/test.sh | 4 +- src/bin/pg_waldump/pg_waldump.c | 246 ++++++++++++++++------- src/include/access/xlog.h | 1 + src/include/access/xlog_internal.h | 76 ++++--- src/include/access/xlogreader.h | 8 +- src/include/catalog/pg_control.h | 2 +- src/include/pg_config.h.in | 5 - src/include/pg_config_manual.h | 6 + src/tools/msvc/Solution.pm | 2 - 46 files changed, 897 insertions(+), 500 deletions(-) -- Sent via pgsql-committers mailing list (pgsql-committers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-committers
pgsql-committers by date: