diff options
Diffstat (limited to 'src/backend/executor/nodeBitmapHeapscan.c')
| -rw-r--r-- | src/backend/executor/nodeBitmapHeapscan.c | 18 |
1 files changed, 3 insertions, 15 deletions
diff --git a/src/backend/executor/nodeBitmapHeapscan.c b/src/backend/executor/nodeBitmapHeapscan.c index ae8a11da304..726d3a2d9a4 100644 --- a/src/backend/executor/nodeBitmapHeapscan.c +++ b/src/backend/executor/nodeBitmapHeapscan.c @@ -707,7 +707,6 @@ ExecInitBitmapHeapScan(BitmapHeapScan *node, EState *estate, int eflags) { BitmapHeapScanState *scanstate; Relation currentRelation; - int io_concurrency; /* check for unsupported flags */ Assert(!(eflags & (EXEC_FLAG_BACKWARD | EXEC_FLAG_MARK))); @@ -737,8 +736,6 @@ ExecInitBitmapHeapScan(BitmapHeapScan *node, EState *estate, int eflags) scanstate->prefetch_iterator = NULL; scanstate->prefetch_pages = 0; scanstate->prefetch_target = 0; - /* may be updated below */ - scanstate->prefetch_maximum = target_prefetch_pages; scanstate->pscan_len = 0; scanstate->initialized = false; scanstate->shared_tbmiterator = NULL; @@ -794,20 +791,11 @@ ExecInitBitmapHeapScan(BitmapHeapScan *node, EState *estate, int eflags) ExecInitQual(node->bitmapqualorig, (PlanState *) scanstate); /* - * Determine the maximum for prefetch_target. If the tablespace has a - * specific IO concurrency set, use that to compute the corresponding - * maximum value; otherwise, we already initialized to the value computed - * by the GUC machinery. + * Maximum number of prefetches for the tablespace if configured, otherwise + * the current value of the effective_io_concurrency GUC. */ - io_concurrency = + scanstate->prefetch_maximum = get_tablespace_io_concurrency(currentRelation->rd_rel->reltablespace); - if (io_concurrency != effective_io_concurrency) - { - double maximum; - - if (ComputeIoConcurrency(io_concurrency, &maximum)) - scanstate->prefetch_maximum = rint(maximum); - } scanstate->ss.ss_currentRelation = currentRelation; |