Em sex., 7 de nov. de 2025 às 11:59, Andres Freund <andres@anarazel.de> escreveu:
On 2025-11-07 11:52:37 -0300, Ranier Vilela wrote: > Em sex., 7 de nov. de 2025 às 11:41, Andres Freund <andres@anarazel.de> > escreveu: > > On 2025-11-07 11:28:06 -0300, Ranier Vilela wrote: > > > Use pg_atomic_fetch_add_u64 to replace pg_atomic_read_u64 and > > > pg_atomic_write_u64 calls. > > > > > > This simplifies the logic and this increases the likelihood that the > > > operation will be successful. > > > > How does it do so? As the assertions indicate, this can only be run from a > > single process. > > > Can I rephrase that? > > That simplifies the logic a bit.
Maybe simpler, but also vastly slower than before. An atomic increment is maybe two orders of magnitude more expensive than an unlocked read & write.
