postgres.git / summary / log / commit / refs

commit    9efa998a6403c5fe973ce5801d09ffa63e706eb6
Author:   Stephen Frost <sfrost@snowman.net>
Date:     Fri Aug 27 23:23:11 2021 +0000

    Use maintenance_io_concurrency for ANALYZE prefetch
    
    When prefetching pages for ANALYZE, we should be using
    maintenance_io_concurrenty (by calling
    get_tablespace_maintenance_io_concurrency(), not
    get_tablespace_io_concurrency()).
    
    ANALYZE prefetching was introduced in c6fc50c, so back-patch to 14.
    
    Backpatch-through: 14
    Reported-By: Egor Rogov
    Discussion: https://postgr.es/m/9beada99-34ce-8c95-fadb-451768d08c64%40postgrespro.ru


 src/backend/commands/analyze.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/backend/commands/analyze.c b/src/backend/commands/analyze.c
index b31426e2b21..03cdf4f5e8e 100644
--- a/src/backend/commands/analyze.c
+++ b/src/backend/commands/analyze.c
@@ -1164,7 +1164,7 @@ acquire_sample_rows(Relation onerel, int elevel,
 	nblocks = BlockSampler_Init(&bs, totalblocks, targrows, randseed);
 
 #ifdef USE_PREFETCH
-	prefetch_maximum = get_tablespace_io_concurrency(onerel->rd_rel->reltablespace);
+	prefetch_maximum = get_tablespace_maintenance_io_concurrency(onerel->rd_rel->reltablespace);
 	/* Create another BlockSampler, using the same seed, for prefetching */
 	if (prefetch_maximum)
 		(void) BlockSampler_Init(&prefetch_bs, totalblocks, targrows, randseed);


[parent: 8f6c11034976]