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75be66464c
postgresql/src/include
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Tom Lane 75be66464c Invent min_parallel_relation_size GUC to replace a hard-wired constant. 
The main point of doing this is to allow the cutoff to be set very small,
even zero, to allow parallel-query behavior to be tested on relatively
small tables such as we typically use in the regression tests.  But it
might be of use to users too.  The number-of-workers scaling behavior in
create_plain_partial_paths() is pretty ad-hoc and subject to change, so
we won't expose anything about that, but the notion of not considering
parallel query at all for tables below size X seems reasonably stable.

Amit Kapila, per a suggestion from me

Discussion: <17170.1465830165@sss.pgh.pa.us>
2016-06-16 13:47:20 -04:00
..
access Fix lazy_scan_heap so that it won't mark pages all-frozen too soon. 2016-06-15 14:30:06 -04:00
bootstrap Update copyright for 2016 2016-01-02 13:33:40 -05:00
catalog Mark some functions parallel-unsafe. 2016-06-15 11:40:07 -04:00
commands Support ALTER THING .. DEPENDS ON EXTENSION 2016-04-05 18:38:54 -03:00
common pgindent run for 9.6 2016-06-09 18:02:36 -04:00
datatype Be more careful about out-of-range dates and timestamps. 2016-03-16 19:09:28 -04:00
executor pgindent run for 9.6 2016-06-09 18:02:36 -04:00
fe_utils Move and rename fmtReloptionsArray(). 2016-05-06 12:45:36 +01:00
foreign pgindent run for 9.6 2016-06-09 18:02:36 -04:00
lib Remove mergeHyperLogLog. 2016-04-27 10:55:32 -04:00
libpq Add authentication parameters compat_realm and upn_usename for SSPI 2016-04-08 20:28:38 +02:00
mb Update copyright for 2016 2016-01-02 13:33:40 -05:00
nodes In planner.c, avoid assuming that all PathTargets have sortgrouprefs. 2016-06-13 12:59:25 -04:00
optimizer Invent min_parallel_relation_size GUC to replace a hard-wired constant. 2016-06-16 13:47:20 -04:00
parser pgindent run for 9.6 2016-06-09 18:02:36 -04:00
port Fix various common mispellings. 2016-06-03 16:08:45 +01:00
portability Update copyright for 2016 2016-01-02 13:33:40 -05:00
postmaster Allow Pin/UnpinBuffer to operate in a lockfree manner. 2016-04-10 20:12:32 -07:00
regex Suppress compiler warnings about useless comparison of unsigned to zero. 2016-02-15 17:12:16 -05:00
replication pgindent run for 9.6 2016-06-09 18:02:36 -04:00
rewrite Update copyright for 2016 2016-01-02 13:33:40 -05:00
snowball Update copyright for 2016 2016-01-02 13:33:40 -05:00
storage Change default of backend_flush_after GUC to 0 (disabled). 2016-06-10 15:31:11 -07:00
tcop Stop the executor if no more tuples can be sent from worker to leader. 2016-06-06 14:52:58 -04:00
tsearch pgindent run for 9.6 2016-06-09 18:02:36 -04:00
utils Fix interaction between CREATE INDEX and "snapshot too old". 2016-06-10 09:25:31 -05:00
.gitignore Autoconfiscate selection of 64-bit int type for 64-bit large object API. 2012-10-07 21:52:43 -04:00
c.h Make init_spin_delay() C89 compliant and change stuck spinlock reporting. 2016-04-13 17:00:53 -07:00
fmgr.h Update copyright for 2016 2016-01-02 13:33:40 -05:00
funcapi.h Widen query numbers-of-tuples-processed counters to uint64. 2016-03-12 16:05:29 -05:00
getaddrinfo.h Update copyright for 2016 2016-01-02 13:33:40 -05:00
getopt_long.h Update copyright for 2016 2016-01-02 13:33:40 -05:00
Makefile Create src/fe_utils/, and move stuff into there from pg_dump's dumputils. 2016-03-24 15:55:57 -04:00
miscadmin.h Mark PostmasterPid as PGDLLIMPORT. 2016-06-03 14:06:35 -04:00
pg_config_ext.h.in Autoconfiscate selection of 64-bit int type for 64-bit large object API. 2012-10-07 21:52:43 -04:00
pg_config_ext.h.win32 Autoconfiscate selection of 64-bit int type for 64-bit large object API. 2012-10-07 21:52:43 -04:00
pg_config_manual.h Add support for more extensive testing of raw_expression_tree_walker(). 2016-05-23 19:08:26 -04:00
pg_config.h.in Add BSD authentication method. 2016-04-08 13:52:06 -04:00
pg_config.h.win32 Stamp 9.6beta1. 2016-05-09 16:47:49 -04:00
pg_getopt.h Update copyright for 2016 2016-01-02 13:33:40 -05:00
pg_trace.h Update copyright for 2016 2016-01-02 13:33:40 -05:00
pgstat.h pgindent run for 9.6 2016-06-09 18:02:36 -04:00
pgtar.h Update copyright for 2016 2016-01-02 13:33:40 -05:00
pgtime.h Update copyright for 2016 2016-01-02 13:33:40 -05:00
port.h On all Windows platforms, not just Cygwin, use _timezone and _tzname. 2016-03-28 20:59:25 -04:00
postgres_ext.h pgindent run for 9.4 2014-05-06 12:12:18 -04:00
postgres_fe.h Update copyright for 2016 2016-01-02 13:33:40 -05:00
postgres.h Adjust DatumGetBool macro, this time for sure. 2016-04-28 11:50:58 -04:00
rusagestub.h Update copyright for 2016 2016-01-02 13:33:40 -05:00
windowapi.h Update copyright for 2016 2016-01-02 13:33:40 -05:00