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postgresql/src/include/access
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Robert Haas 3ecab37d97 Teach autovacuum about multixact member wraparound. 
The logic introduced in commit b69bf30b9b
and repaired in commits 669c7d20e6 and
7be47c56af helps to ensure that we don't
overwrite old multixact member information while it is still needed,
but a user who creates many large multixacts can still exhaust the
member space (and thus start getting errors) while autovacuum stands
idly by.

To fix this, progressively ramp down the effective value (but not the
actual contents) of autovacuum_multixact_freeze_max_age as member space
utilization increases.  This makes autovacuum more aggressive and also
reduces the threshold for a manual VACUUM to perform a full-table scan.

This patch leaves unsolved the problem of ensuring that emergency
autovacuums are triggered even when autovacuum=off.  We'll need to fix
that via a separate patch.

Thomas Munro and Robert Haas
2015-05-08 12:53:30 -04:00
..
attnum.h pgindent run for 9.4 2014-05-06 12:12:18 -04:00
clog.h Update copyright for 2014 2014-01-07 16:05:30 -05:00
genam.h pgindent run for 9.4 2014-05-06 12:12:18 -04:00
gin.h pgindent run for 9.4 2014-05-06 12:12:18 -04:00
gin_private.h Fix query-duration memory leak with GIN rescans. 2015-01-30 17:59:17 +01:00
gist.h pgindent run for 9.4 2014-05-06 12:12:18 -04:00
gist_private.h Avoid palloc in critical section in GiST WAL-logging. 2014-04-03 15:43:50 +03:00
gistscan.h Update copyright for 2014 2014-01-07 16:05:30 -05:00
hash.h pgindent run for 9.4 2014-05-06 12:12:18 -04:00
heapam.h pgindent run for 9.4 2014-05-06 12:12:18 -04:00
heapam_xlog.h Fix decoding of consecutive MULTI_INSERTs emitted by one heap_multi_insert(). 2014-07-12 14:30:43 +02:00
hio.h Update copyright for 2014 2014-01-07 16:05:30 -05:00
htup.h pgindent run for 9.4 2014-05-06 12:12:18 -04:00
htup_details.h pgindent run for 9.4 2014-05-06 12:12:18 -04:00
itup.h pgindent run for 9.4 2014-05-06 12:12:18 -04:00
multixact.h Teach autovacuum about multixact member wraparound. 2015-05-08 12:53:30 -04:00
nbtree.h pgindent run for 9.4 2014-05-06 12:12:18 -04:00
printtup.h Update copyright for 2014 2014-01-07 16:05:30 -05:00
reloptions.h Move view reloptions into their own varlena struct 2014-07-14 17:24:40 -04:00
relscan.h Update copyright for 2014 2014-01-07 16:05:30 -05:00
rewriteheap.h pgindent run for 9.4 2014-05-06 12:12:18 -04:00
rmgr.h pgindent run for 9.4 2014-05-06 12:12:18 -04:00
rmgrlist.h pgindent run for 9.4 2014-05-06 12:12:18 -04:00
sdir.h Update copyright for 2014 2014-01-07 16:05:30 -05:00
skey.h pgindent run for 9.4 2014-05-06 12:12:18 -04:00
slru.h pgindent run for 9.4 2014-05-06 12:12:18 -04:00
spgist.h Update copyright for 2014 2014-01-07 16:05:30 -05:00
spgist_private.h Adjust SP-GiST WAL record formats to reduce alignment padding. 2014-06-05 12:55:35 +03:00
subtrans.h Update copyright for 2014 2014-01-07 16:05:30 -05:00
sysattr.h Update copyright for 2014 2014-01-07 16:05:30 -05:00
timeline.h Update copyright for 2014 2014-01-07 16:05:30 -05:00
transam.h pgindent run for 9.4 2014-05-06 12:12:18 -04:00
tupconvert.h Update copyright for 2014 2014-01-07 16:05:30 -05:00
tupdesc.h pgindent run for 9.4 2014-05-06 12:12:18 -04:00
tupmacs.h pgindent run for 9.4 2014-05-06 12:12:18 -04:00
tuptoaster.h Minor cleanup/code review for "indirect toast" stuff. 2015-02-09 12:30:55 -05:00
twophase.h Fix race condition in preparing a transaction for two-phase commit. 2014-05-15 16:37:50 +03:00
twophase_rmgr.h Update copyright for 2014 2014-01-07 16:05:30 -05:00
valid.h Update copyright for 2014 2014-01-07 16:05:30 -05:00
visibilitymap.h Update copyright for 2014 2014-01-07 16:05:30 -05:00
xact.h Treat 2PC commit/abort the same as regular xacts in recovery. 2014-07-29 11:57:39 +03:00
xlog.h Flush unlogged table's buffers when copying or moving databases. 2014-10-20 23:45:20 +02:00
xlog_fn.h Update copyright for 2014 2014-01-07 16:05:30 -05:00
xlog_internal.h Don't archive bogus recycled or preallocated files after timeline switch. 2015-04-13 17:22:21 +03:00
xlogdefs.h pgindent run for 9.4 2014-05-06 12:12:18 -04:00
xlogreader.h Update copyright for 2014 2014-01-07 16:05:30 -05:00
xlogutils.h Update copyright for 2014 2014-01-07 16:05:30 -05:00