Hi christian: On Thu, 30 May 2024 at 12:51, Christian Schröder <christian.schroeder@xxxxxxx> wrote: ... > I had already checked most of your points, but I double checked them now. ... > Shared memory limits look good to me: > # sudo sysctl -a | grep kernel.shm > kernel.shmall = 18446744073692774399 > kernel.shmmax = 18446744073692774399 > kernel.shmmni = 4096 Bear in mind this is SysV shared memory. IIRC Pg uses POSIX shared memory for shared buffers, which I think is backed normally in Linux by files in a tmpfs mounted on /dev/shm. It still uses some amount of SysV due to some special properties lacking from POSIX, for control purposes, but only a little. You could try "df -h /dev/shm" and "ls -lhR /dev/shm/" to see if you have problems there. Francisco Olarte.
