Craig Ringer <> writes:
> On 20 December 2016 at 21:59, Robert Haas <> wrote:
>> We could implement this by having
>> some process, like the background writer,
>> SendProcSignal(PROCSIG_HOUSEKEEPING) to every process in the system
>> every 10 minutes or so.

> ... on a rolling basis.

I don't understand why we'd make that a system-wide behavior at all,
rather than expecting each process to manage its own cache.

                        regards, tom lane

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