podman/docs/source/markdown/options/shm-size-systemd.md

####> This option file is used in: ####> podman create, pod clone, pod create, run ####> If file is edited, make sure the changes ####> are applicable to all of those.

--shm-size-systemd=number[unit]

Size of systemd-specific tmpfs mounts such as /run, /run/lock, /var/log/journal and /tmp. A unit can be b (bytes), k (kibibytes), m (mebibytes), or g (gibibytes). If the unit is omitted, the system uses bytes. If the size is omitted, the default is 64m. When size is 0, the usage is limited to 50% of the host's available memory.