Martijn van Oosterhout <kleptog@svana.org> writes:
> After you changed the conf file, did you restart the postmaster? Not
> just reload, since that won't affect existing sessions I beleive.
SIGHUP will cause existing sessions to adopt a new value of sort_mem
from the config file (unless it's been locally overridden, eg with SET).
However, shared_buffers can only be set at postmaster start, so changing
it in the config file will affect nothing unless you stop and restart
the postmaster.
regards, tom lane
