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| author | Robert Haas <rhaas@postgresql.org> | 2016-03-04 12:59:10 -0500 |
|---|---|---|
| committer | Robert Haas <rhaas@postgresql.org> | 2016-03-04 12:59:10 -0500 |
| commit | df4685fb0cad1c75970b6e8d0aacca4d03545e04 (patch) | |
| tree | 88691c5fd5004e2099bd2d0725fe7143cd7aa2ca /src/backend/executor/execParallel.c | |
| parent | 546cd0d7664ee0f120ef3b267d4303190bdfdb94 (diff) | |
| download | postgresql-df4685fb0cad1c75970b6e8d0aacca4d03545e04.tar.gz postgresql-df4685fb0cad1c75970b6e8d0aacca4d03545e04.zip | |
Minor optimizations based on ParallelContext having nworkers_launched.
Originally, we didn't have nworkers_launched, so code that used parallel
contexts had to be preprared for the possibility that not all of the
workers requested actually got launched. But now we can count on knowing
the number of workers that were successfully launched, which can shave
off a few cycles and simplify some code slightly.
Amit Kapila, reviewed by Haribabu Kommi, per a suggestion from Peter
Geoghegan.
Diffstat (limited to 'src/backend/executor/execParallel.c')
| -rw-r--r-- | src/backend/executor/execParallel.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/backend/executor/execParallel.c b/src/backend/executor/execParallel.c index 95e8e41d2bb..93c786abdbe 100644 --- a/src/backend/executor/execParallel.c +++ b/src/backend/executor/execParallel.c @@ -522,7 +522,7 @@ ExecParallelFinish(ParallelExecutorInfo *pei) WaitForParallelWorkersToFinish(pei->pcxt); /* Next, accumulate buffer usage. */ - for (i = 0; i < pei->pcxt->nworkers; ++i) + for (i = 0; i < pei->pcxt->nworkers_launched; ++i) InstrAccumParallelQuery(&pei->buffer_usage[i]); /* Finally, accumulate instrumentation, if any. */ |