Re: Read-Write optimistic lock (Re: sinvaladt.c: remove msgnumLock, use atomic operations on maxMsgNum)

Hi,

On 2025-06-16 17:28:31 +0300, Yura Sokolov wrote:
> 04.06.2025 00:04, Andres Freund пишет:
> > Hi,
> > 
> > On 2025-06-02 21:20:33 +0300, Yura Sokolov wrote:
> >> But still problem of spin lock contention is here.
> > 
> > I still would like to see a reproducer for this.
> 
> For problem in sinvaladt.c we have no synthetic reproducer. But version
> with changed maxMsgNum to atomic solved customer's issue.

TBH, I don't see a point in continuing with this thread without something that
others can test.  I rather doubt that the right fix here is to just change the
lock model over, but without a repro I can't evaluate that.

Greetings,

Andres Freund