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Track SLRU page hits in SimpleLruReadPage_ReadOnly

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SLRU page hits were tracked only in SimpleLruReadPage, but that's not
enough because we may hit the page in SimpleLruReadPage_ReadOnly in
which case we don't call SimpleLruReadPage at all.

Reported-by: Kuntal Ghosh
Discussion: https://postgr.es/m/20200119143707.gyinppnigokesjok@development
This commit is contained in:
Tomas Vondra 2020-04-08 02:06:00 +02:00
parent 91c40548d5
commit 2b88fdde30
1 changed files with 4 additions and 0 deletions
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4
src/backend/access/transam/slru.c
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@ -491,6 +491,10 @@ SimpleLruReadPage_ReadOnly(SlruCtl ctl, int pageno, TransactionId xid)
{ {
/* See comments for SlruRecentlyUsed macro */ /* See comments for SlruRecentlyUsed macro */
SlruRecentlyUsed(shared, slotno); SlruRecentlyUsed(shared, slotno);
/* update the stats counter of pages found in the SLRU */
pgstat_count_slru_page_hit(ctl);
return slotno; return slotno;
} }
} }