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-rw-r--r--src/include/storage/bufmgr.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/include/storage/bufmgr.h b/src/include/storage/bufmgr.h
index 7c1e4316dde..b204e4731c1 100644
--- a/src/include/storage/bufmgr.h
+++ b/src/include/storage/bufmgr.h
@@ -152,7 +152,7 @@ extern PGDLLIMPORT bool track_io_timing;
/* only applicable when prefetching is available */
#ifdef USE_PREFETCH
-#define DEFAULT_EFFECTIVE_IO_CONCURRENCY 1
+#define DEFAULT_EFFECTIVE_IO_CONCURRENCY 16
#define DEFAULT_MAINTENANCE_IO_CONCURRENCY 10
#else
#define DEFAULT_EFFECTIVE_IO_CONCURRENCY 0