postgresql/src/backend
Kevin Grittner 25c5392330 Improve performance in freeing memory contexts
The single linked list of memory contexts could result in O(N^2)
performance to free a set of contexts if they were not freed in
reverse order of creation.  In many cases the reverse order was
used, but there were some significant exceptions that caused real-
world performance problems.  Rather than requiring all callers to
care about the order in which contexts were freed, and hunting down
and changing all existing cases where the wrong order was used, we
add one pointer per memory context so that the implementation
details are not so visible.

Jan Wieck
2015-12-08 17:32:49 -06:00
..
access Further tweak commit_timestamp behavior 2015-12-03 19:22:31 -03:00
bootstrap pgindent run for 9.5 2015-05-23 21:35:49 -04:00
catalog Fix handling of inherited check constraints in ALTER COLUMN TYPE (again). 2015-11-20 14:55:47 -05:00
commands COPY (INSERT/UPDATE/DELETE .. RETURNING ..) 2015-11-27 19:11:22 +03:00
executor Allow foreign and custom joins to handle EvalPlanQual rechecks. 2015-12-08 12:31:03 -05:00
foreign Code review for foreign/custom join pushdown patch. 2015-05-10 14:36:36 -04:00
lib Avoid use of float arithmetic in bipartite_match.c. 2015-08-23 13:02:18 -04:00
libpq Message improvements 2015-11-16 21:39:23 -05:00
main Revoke support for strxfrm() that write past the specified array length. 2015-07-08 20:44:21 -04:00
nodes Allow foreign and custom joins to handle EvalPlanQual rechecks. 2015-12-08 12:31:03 -05:00
optimizer Allow foreign and custom joins to handle EvalPlanQual rechecks. 2015-12-08 12:31:03 -05:00
parser COPY (INSERT/UPDATE/DELETE .. RETURNING ..) 2015-11-27 19:11:22 +03:00
po Translation updates 2015-06-28 23:56:55 -04:00
port On Windows, ensure shared memory handle gets closed if not being used. 2015-10-13 11:21:33 -04:00
postmaster Message improvements 2015-11-16 21:39:23 -05:00
regex Fix enforcement of restrictions inside regexp lookaround constraints. 2015-11-07 12:43:24 -05:00
replication Adopt the GNU convention for handling tar-archive members exceeding 8GB. 2015-11-21 20:21:31 -05:00
rewrite Apply SELECT policies in INSERT/UPDATE+RETURNING 2015-10-05 07:55:13 -04:00
snowball Remove no-longer-required function declarations. 2015-05-24 12:20:23 -04:00
storage Message improvements 2015-11-16 21:39:23 -05:00
tcop Fix problems with ParamListInfo serialization mechanism. 2015-11-02 18:11:29 -05:00
tsearch pgindent run for 9.5 2015-05-23 21:35:49 -04:00
utils Improve performance in freeing memory contexts 2015-12-08 17:32:49 -06:00
.gitignore Add .gitignore entries for AIX-specific intermediate build artifacts. 2015-07-08 20:44:22 -04:00
Makefile Revert "Have dtrace depend on object files directly, not objfiles.txt" 2015-10-15 13:16:03 -04:00
common.mk Remove maintainer-check target, fold into normal build 2013-10-10 20:11:56 -04:00
nls.mk Remove trailing slashes from directories in find command 2015-09-18 22:06:54 -04:00