[EMAIL PROTECTED] (elein) writes:
> However, if you use the -B option on the pg_ctl
> start up, postgres starts up fine. And
> the shared_buffers value shown by show
> is the higher value.
It behaves as expected for me, in both 7.4 and CVS tip. Are you sure
your test case wasn't such that the higher -B value in fact worked?
(For instance, maybe you stopped another postmaster that was using some
of the shmem.)
$ postmaster -B 65000
FATAL: could not create shared memory segment: Not enough space
DETAIL: Failed system call was shmget(key=5474001, size=543997952, 03600).
HINT: This error usually means that PostgreSQL's request for a shared memory
segment exceeded available memory or swap space. To reduce the request size
(currently 543997952 bytes), reduce PostgreSQL's shared_buffers parameter
(currently 65000) and/or its max_connections parameter (currently 100).
The PostgreSQL documentation contains more information about shared
memory configuration.
$
regards, tom lane
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