Обсуждение: pgsql: Use atomic access for SlruShared->latest_page_number
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 <dilipbalaut@gmail.com> Reviewed-by: Andrey M. Borodin <x4mmm@yandex-team.ru> 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(-)
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)