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* pgsql: Use atomic access for SlruShared->latest_page_number
@ 2024-02-06 10:42 Alvaro Herrera <[email protected]>
2024-02-06 11:05 ` Re: pgsql: Use atomic access for SlruShared->latest_page_number Alvaro Herrera <[email protected]>
0 siblings, 1 reply; 2+ messages in thread
From: Alvaro Herrera @ 2024-02-06 10:42 UTC (permalink / raw)
To: [email protected]
Use atomic access for SlruShared->latest_page_number
The new concurrency model proposed for slru.c to improve performance
does not include any single lock that would coordinate processes
doing concurrent reads/writes on SlruShared->latest_page_number.
We can instead use atomic reads and writes for that variable.
Author: Dilip Kumar <[email protected]>
Reviewed-by: Andrey M. Borodin <[email protected]>
Discussion: https://postgr.es/m/CAFiTN-vzDvNz=ExGXz6gdyjtzGixKSqs0mKHMmaQ8sOSEFZ33A@mail.gmail.com
Branch
------
master
Details
-------
https://git.postgresql.org/pg/commitdiff/d172b717c6f436738cc8383a4e9f611ae227fd93
Modified Files
--------------
src/backend/access/transam/clog.c | 6 +-----
src/backend/access/transam/commit_ts.c | 7 +++---
src/backend/access/transam/multixact.c | 28 ++++++++++++++----------
src/backend/access/transam/slru.c | 39 ++++++++++++++++++++++++----------
src/include/access/slru.h | 5 ++++-
5 files changed, 53 insertions(+), 32 deletions(-)
^ permalink raw reply [nested|flat] 2+ messages in thread
* Re: pgsql: Use atomic access for SlruShared->latest_page_number
2024-02-06 10:42 pgsql: Use atomic access for SlruShared->latest_page_number Alvaro Herrera <[email protected]>
@ 2024-02-06 11:05 ` Alvaro Herrera <[email protected]>
0 siblings, 0 replies; 2+ messages in thread
From: Alvaro Herrera @ 2024-02-06 11:05 UTC (permalink / raw)
To: [email protected]
On 2024-Feb-06, Alvaro Herrera wrote:
> Use atomic access for SlruShared->latest_page_number
rorqual failed (--disable-atomics --disable-spinlocks). Looking into it ...
--
Álvaro Herrera Breisgau, Deutschland — https://www.EnterpriseDB.com/
"Nunca se desea ardientemente lo que solo se desea por razón" (F. Alexandre)
^ permalink raw reply [nested|flat] 2+ messages in thread
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