| From: | Alvaro Herrera <alvherre(at)2ndquadrant(dot)com> |
|---|---|
| To: | Haribabu Kommi <kommi(dot)haribabu(at)gmail(dot)com> |
| Cc: | Mark Kirkwood <mark(dot)kirkwood(at)catalyst(dot)net(dot)nz>, "pgsql-hackers(at)postgresql(dot)org" <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Per table autovacuum vacuum cost limit behaviour strange |
| Date: | 2014-04-09 22:10:33 |
| Message-ID: | 20140409221032.GA5822@eldon.alvh.no-ip.org |
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| Lists: | pgsql-hackers |
Haribabu Kommi wrote:
> I modified the "autovac_balance_cost" function to balance the costs using
> the number of running workers, instead
> of default vacuum cost parameters.
Just as a heads-up, this patch wasn't part of the commitfest, but I
intend to review it and possibly commit for 9.4. Not immediately but at
some point.
Arguably this is a bug fix, since the autovac rebalance code behaves
horribly in cases such as the one described here, so I should consider a
backpatch right away. However I don't think it's a good idea to do that
without more field testing. Perhaps we can backpatch later if the new
code demonstrates its sanity.
--
Álvaro Herrera http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Training & Services
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