Hannu Krosing <[EMAIL PROTECTED]> writes: > Ãhel kenal päeval, T, 2007-03-27 kell 07:11, kirjutas Andrew Dunstan: >> Er, what listen table?
> At least the list of which backends listen to which events should be > also in shared mem. No, the intent is specifically that there will be *no* such global structure. All it does is add complexity, not to mention make it harder to size shared memory. > How else would we know how many copies to make for each backend or when > we can release the memory in case we make one copy ? The proposed design is essentially a clone of the sinval messaging system, which does not need to know either of those and does not make "one copy per backend". There's one copy, period. regards, tom lane ---------------------------(end of broadcast)--------------------------- TIP 9: In versions below 8.0, the planner will ignore your desire to choose an index scan if your joining column's datatypes do not match