Re: [PATCH 1/1] Initial mach based shared memory support.

Peter Eisentraut <peter.eisentraut@enterprisedb.com> writes:
> This is the first I've heard in years of shared memory limits being a 
> problem on macOS.  What settings or what levels of concurrency do you 
> use to provoke these errors?

I suppose it wouldn't be too hard to run into shmmni with aggressive
parallel testing; the default is just 32.  But AFAIK it still works
to set the shm limits via /etc/sysctl.conf.  (I wonder if you have
to disable SIP to mess with that, though.)

            regards, tom lane