upstream/postgresql
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2026-06-18 21:19:36 -04:00
Code Issues Projects Releases Packages Wiki Activity Actions
postgresql/src/include/access
History
Tom Lane 81ca868630 Improve management of SLRU statistics collection. 
Instead of re-identifying which statistics bucket to use for a given
SLRU on every counter increment, do it once during shmem initialization.
This saves a fair number of cycles, and there's no real cost because
we could not have a bucket assignment that varies over time or across
backends anyway.

Also, get rid of the ill-considered decision to let pgstat.c pry
directly into SLRU's shared state; it's cleaner just to have slru.c
pass the stats bucket number.

In consequence of these changes, there's no longer any need to store
an SLRU's LWLock tranche info in shared memory, so get rid of that,
making this a net reduction in shmem consumption.  (That partly
reverts fe702a7b3.)

This is basically code review for 28cac71bd, so I also cleaned up
some comments, removed a dangling extern declaration, fixed some
things that should be static and/or const, etc.

Discussion: https://postgr.es/m/3618.1589313035@sss.pgh.pa.us
2020-05-13 13:08:23 -04:00
..
amapi.h Implement operator class parameters 2020-03-30 19:17:23 +03:00
amvalidate.h Implement operator class parameters 2020-03-30 19:17:23 +03:00
attmap.h Fix assorted typos 2020-03-31 16:00:06 +02:00
attnum.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
brin.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
brin_internal.h Implement operator class parameters 2020-03-30 19:17:23 +03:00
brin_page.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
brin_pageops.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
brin_revmap.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
brin_tuple.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
brin_xlog.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
bufmask.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
clog.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
commit_ts.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
detoast.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
genam.h Implement operator class parameters 2020-03-30 19:17:23 +03:00
generic_xlog.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
gin.h Implement operator class parameters 2020-03-30 19:17:23 +03:00
gin_private.h Avoid full scan of GIN indexes when possible 2020-01-18 01:11:39 +03:00
ginblock.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
ginxlog.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
gist.h Implement operator class parameters 2020-03-30 19:17:23 +03:00
gist_private.h Skip WAL for new relfilenodes, under wal_level=minimal. 2020-04-04 12:25:34 -07:00
gistscan.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
gistxlog.h Skip WAL for new relfilenodes, under wal_level=minimal. 2020-04-04 12:25:34 -07:00
hash.h Get rid of trailing semicolons in C macro definitions. 2020-05-01 17:28:00 -04:00
hash_xlog.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
heapam.h Skip WAL for new relfilenodes, under wal_level=minimal. 2020-04-04 12:25:34 -07:00
heapam_xlog.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
heaptoast.h tableam: New callback relation_fetch_toast_slice. 2020-01-07 14:36:38 -05:00
hio.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
htup.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
htup_details.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
itup.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
multixact.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
nbtree.h Normalize _bt_findsplitloc() argument names. 2020-05-05 14:42:10 -07:00
nbtxlog.h Adjust "root of to-be-deleted subtree" function. 2020-05-11 11:01:07 -07:00
parallel.h Allow vacuum command to process indexes in parallel. 2020-01-20 07:57:49 +05:30
printsimple.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
printtup.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
relation.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
reloptions.h Implement operator class parameters 2020-03-30 19:17:23 +03:00
relscan.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
rewriteheap.h Skip WAL for new relfilenodes, under wal_level=minimal. 2020-04-04 12:25:34 -07:00
rmgr.h Phase 2 of pgindent updates. 2017-06-21 15:19:25 -04:00
rmgrlist.h Add deduplication to nbtree. 2020-02-26 13:05:30 -08:00
sdir.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
session.h Fix typo. 2020-01-13 14:44:55 +05:30
skey.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
slru.h Improve management of SLRU statistics collection. 2020-05-13 13:08:23 -04:00
spgist.h Implement operator class parameters 2020-03-30 19:17:23 +03:00
spgist_private.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
spgxlog.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
stratnum.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
subtrans.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
sysattr.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
table.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
tableam.h Skip WAL for new relfilenodes, under wal_level=minimal. 2020-04-04 12:25:34 -07:00
timeline.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
toast_helper.h Introduce macros for typalign and typstorage constants. 2020-03-04 10:34:25 -05:00
toast_internals.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
transam.h Add SQL type xid8 to expose FullTransactionId to users. 2020-04-07 12:03:59 +12:00
tsmapi.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
tupconvert.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
tupdesc.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
tupdesc_details.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
tupmacs.h Introduce macros for typalign and typstorage constants. 2020-03-04 10:34:25 -05:00
twophase.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
twophase_rmgr.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
valid.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
visibilitymap.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
xact.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
xlog.h Change the display of WAL usage statistics in Explain. 2020-05-05 08:00:53 +05:30
xlog_internal.h Skip WAL for new relfilenodes, under wal_level=minimal. 2020-04-04 12:25:34 -07:00
xlogarchive.h Move routine definitions of xlogarchive.c to a new header file 2020-03-31 15:33:04 +09:00
xlogdefs.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
xloginsert.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
xlogreader.h Adjust walsender usage of xlogreader, simplify APIs 2020-05-13 12:17:08 -04:00
xlogrecord.h Update copyrights for 2020 2020-01-01 12:21:45 -05:00
xlogutils.h Adjust walsender usage of xlogreader, simplify APIs 2020-05-13 12:17:08 -04:00