| From: | Alvaro Herrera <alvherre(at)2ndquadrant(dot)com> |
|---|---|
| To: | Thomas Munro <thomas(dot)munro(at)enterprisedb(dot)com> |
| Cc: | Kiriakos Georgiou <kg(dot)postgresql(at)olympiakos(dot)com>, Forums postgresql <pgsql-general(at)postgresql(dot)org> |
| Subject: | Re: pg_multixact issues |
| Date: | 2016-02-10 22:05:53 |
| Message-ID: | 20160210220553.GA365600@alvherre.pgsql |
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| Thread: | |
| Lists: | pgsql-general |
Thomas Munro wrote:
> 4. You could look into whether all those multixacts with many member
> are really expected. (Large numbers of concurrent FK checks or
> explicit share locks on the same rows perhaps? A good proportion of
> this happened on one day this week I see.)
I think maybe this patch
https://www.postgresql.org/message-id/20150620043650.GX133018%40postgresql.org
should help with this. I expect to come back to this and get it pushed
to 9.3 and 9.4 sometime ...
--
Álvaro Herrera http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
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