Hi Japlin Li Thank you for such important information ! Got it Japin Li <japi...@hotmail.com> 于2024年2月19日周一 10:26写道：
> > On Mon, 19 Feb 2024 at 00:56, Tomas Vondra <tomas.von...@enterprisedb.com> > wrote: > > On 2/18/24 03:30, Li Japin wrote: > >> > >> I find it seems need to change MAX_SIMUL_LWLOCKS if we enlarge the > NUM_BUFFER_PARTITIONS, > >> I didn’t find any comments to describe the relation between > MAX_SIMUL_LWLOCKS and > >> NUM_BUFFER_PARTITIONS, am I missing someghing? > > > > IMHO the relationship is pretty simple - MAX_SIMUL_LWLOCKS needs to be > > higher than NUM_BUFFER_PARTITIONS, so that the backend can acquire all > > the partition locks if needed. > > > > Thanks for the explanation! Got it. > > > There's other places that acquire a bunch of locks, and all of them need > > to be careful not to exceed MAX_SIMUL_LWLOCKS. For example gist has > > GIST_MAX_SPLIT_PAGES. > > > > > > regards >
