Re: Does idle sessions will consume more cpu and ram? If yes,how tocontrol them - Mailing list pgsql-general

From Ron
Subject Re: Does idle sessions will consume more cpu and ram? If yes,how tocontrol them
Date
Msg-id de4c1915-f8b3-43e9-016f-f80dbe11c274@gmail.com
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In response to Re: Does idle sessions will consume more cpu and ram? If yes,how tocontrol them  (Michael Paquier <michael@paquier.xyz>)
Responses Re: Does idle sessions will consume more cpu and ram? If yes,how tocontrol them  (Pavel Stehule <pavel.stehule@gmail.com>)
List pgsql-general
On 12/19/18 7:27 PM, Michael Paquier wrote:
[snip]
> Each backend stores its own copy of the relation cache, so if you have
> idle connections which have been used for other work in the past then
> the memory of those caches is still around.  Idle connections also have
> a CPU cost in Postgres when building snapshots for example, and their
> entries need to be scanned from a wider array, but usually the relation
> cache bloat is a wider problem.

So it's best to kill connections that have been idle for a while?

-- 
Angular momentum makes the world go 'round.


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