On 13/06/2024 17:40, Robert Haas wrote:
On Thu, Jun 13, 2024 at 8:29 AM Heikki Linnakangas wrote:
However, the value that the function calculates can sometimes be
*greater* than autovacuum_multixact_freeze_max_age.
That was definitely not what I intended and is definitely bad.
In any case,
On Thu, Jun 13, 2024 at 8:29 AM Heikki Linnakangas wrote:
> However, the value that the function calculates can sometimes be
> *greater* than autovacuum_multixact_freeze_max_age.
That was definitely not what I intended and is definitely bad.
> In any case, I think the function
> should clamp the
The purpose of MultiXactMemberFreezeThreshold() is to make the effective
autovacuum_multixact_freeze_max_age smaller, if the multixact members
SLRU is approaching wraparound. Per comment there:
* To prevent that, if more than a threshold portion of the members space is
* used, we effectively
