On Tue, Apr 07, 2020 at 05:01:37PM +0530, Kuntal Ghosh wrote:
Hello Tomas,
On Thu, Apr 2, 2020 at 5:59 PM Tomas Vondra
<tomas.von...@2ndquadrant.com> wrote:
Thank you for the patch, pushed.
In SimpleLruReadPage_ReadOnly, we first try to find the SLRU page in
shared buffer under shared lock, then conditionally visit
SimpleLruReadPage if reading is necessary. IMHO, we should update
hit_count if we can find the buffer in SimpleLruReadPage_ReadOnly
directly. Am I missing something?
Attached a patch for the same.
Yes, I think that's correct - without this we fail to account for
(possibly) a quite significant number of hits. Thanks for the report,
I'll get this pushed later today.
regards
--
Tomas Vondra http://www.2ndQuadrant.com
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
