"Also note that the default /dev/shm size for containers is 64MB. If the shared memory is exhausted you will encounter ERROR: could not resize shared memory segment . . . : No space left on device. You will want to pass --shm-size=256MB for example to docker run, or alternatively in docker-compose"
What is POSIX shared memory used for anymore? Shared buffers now defaults to mmap, right? So when I run out of shm in Kubernetes because of the 64MB limit, what is actually causing it to run out?
(I know about creating the memory-based volume and mounting it at /dev/shm, and have implemented that workaround. Still want to know what is causing this memory use.)
