Re: idle connection timeout ... - Mailing list pgsql-hackers

From Bruce Momjian
Subject Re: idle connection timeout ...
Date
Msg-id 200210251552.g9PFqaP27140@candle.pha.pa.us
Whole thread Raw
In response to Re: idle connection timeout ...  (Tom Lane <tgl@sss.pgh.pa.us>)
Responses Re: idle connection timeout ...  ("Marc G. Fournier" <scrappy@hub.org>)
List pgsql-hackers
Tom Lane wrote:
> Bruce Momjian <pgman@candle.pha.pa.us> writes:
> > Basically, total connections is to be set larger than you think you will
> > ever need, while you expect per-db to be hit, and if something keeps
> > trying to connect and failing, we may get very bad connection
> > performance for other backends.
> 
> Hmm, I see your point.  A per-db limit *could* be useful even if it's
> set high enough that you don't expect it to be hit ... but most likely
> people would try to use it in a way that it wouldn't be very efficient
> compared to a client-side solution.

The only way to do it would be, after a few hits of the limit, to start
delaying the connection rejections so you don't get hammered.  It could
be done, but even then, I am not sure if it would be optimal.

--  Bruce Momjian                        |  http://candle.pha.pa.us pgman@candle.pha.pa.us               |  (610)
359-1001+  If your life is a hard drive,     |  13 Roberts Road +  Christ can be your backup.        |  Newtown Square,
Pennsylvania19073
 


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