hi all,
tried this on pgsql-admin & darwin-kernel lists, and unfortunately, not a
'nibble' ...
can ne1 here spare a moment?
thanks!
richard
---------- Forwarded Message ----------
hi all,
i've successfully built postgreSQL 7.3.2-STABLE on Mac OSX 10.2.4.
much trouble launching it led me to the discussions
(<http://www.postgresql.org/docs/view.php?version=7.3&idoc=1&file=kernel-re
sources.html>) on setting shared memory parameters -- especially SHMMAX --
in OSX's "/System/Library/StartupItems/SystemTuning/SystemTuning"
so, as instructed, i changed the defaults (near the bottom of SystemTuning):
sysctl -w kern.sysv.shmmax=4194304 sysctl -w kern.sysv.shmmin=1 sysctl -w kern.sysv.shmmni=32 sysctl -w
kern.sysv.shmseg=8 sysctl -w kern.sysv.shmall=1024
to:
sysctl -w kern.sysv.shmmax=33554432 # bytes sysctl -w kern.sysv.shmmin=1 sysctl -w kern.sysv.shmmni=32 sysctl
-wkern.sysv.shmseg=8 sysctl -w kern.sysv.shmall=8192 # 4K pages
and defined (in postgresql.conf):
shared_buffers = 2048 max_coinnection = 1024
and rebooted.
unfortunately, immediately after system launch, i still couldn't launch
postgres
eventually, a random check with "sysctl -a" gave:
kern.sysv.shmmax: -1 kern.sysv.shmmin: -1 kern.sysv.shmmni: -1 kern.sysv.shmseg: -1
kern.sysv.shmall:-1
OBVIOUSLY, a problem!
i CAN enter the sysctl settings at the command line, verify success with
'sysctl -a', and then postgres launches/operates just fine .....
QUESTIONS:
any idea why these setting are being written at boot to values of "-1"?
how do i get these setting to 'stick'?
thanks,
richard