http://developer.postgresql.org/docs...resources.html

16.5.1

"FreeBSD"

....

$ systcl -w kern.ipc.shmall=32768
$ systcl -w kern.ipc.shmmax=134217728
$ systcl -w kern.ipc.semmap=256

"Linux"
....

$ systcl -w kernel.shmmax=134217728
$ systcl -w kernel.shmall=2097152

systcl is wrong sysctl notStefan