Hi,
ISTM the code in tidbitmap.c should be improved. Patch attached. I think
this patch increases the efficiency a bit.
Thanks,
Best regards,
Etsuro Fujita
diff --git a/src/backend/nodes/tidbitmap.c b/src/backend/nodes/tidbitmap.c
index 3ef0112..43628ac 100644
--- a/src/backend/nodes/tidbitmap.c
+++ b/src/backend/nodes/tidbitmap.c
@@ -361,7 +361,7 @@ tbm_union_page(TIDBitmap *a, const PagetableEntry *bpage)
if (bpage->ischunk)
{
/* Scan b's chunk, mark each indicated page lossy in a */
- for (wordnum = 0; wordnum < WORDS_PER_PAGE; wordnum++)
+ for (wordnum = 0; wordnum < WORDS_PER_CHUNK; wordnum++)
{
bitmapword w = bpage->words[wordnum];
@@ -473,7 +473,7 @@ tbm_intersect_page(TIDBitmap *a, PagetableEntry *apage,
const TIDBitmap *b)
/* Scan each bit in chunk, try to clear */
bool candelete = true;
- for (wordnum = 0; wordnum < WORDS_PER_PAGE; wordnum++)
+ for (wordnum = 0; wordnum < WORDS_PER_CHUNK; wordnum++)
{
bitmapword w = apage->words[wordnum];
--
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