Re: shared-memory based stats collector - Mailing list pgsql-hackers

From Andres Freund
Subject Re: shared-memory based stats collector
Date
Msg-id 20180711000605.sqjik3vqe5opqz33@alap3.anarazel.de
Whole thread Raw
In response to Re: shared-memory based stats collector  (Tomas Vondra <tomas.vondra@2ndquadrant.com>)
List pgsql-hackers
On 2018-07-10 14:52:13 +0200, Tomas Vondra wrote:
> There's one more reason why attempts to keep stats snapshots "perfectly"
> consistent are likely doomed to fail - the messages are sent over UDP, which
> does not guarantee delivery etc. So there's always some level of possible
> inconsistency even with "perfectly consistent" snapshots.

FWIW, I don't see us continuing to do so if we go for a shared hashtable
for stats.

- Andres


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