Re: Performance bug in prepared statement binding in 9.2?

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От Andrew Dunstan
Тема Re: Performance bug in prepared statement binding in 9.2?
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Msg-id 5230BF2F.8070600@dunslane.net
обсуждение исходный текст
Ответ на Re: Performance bug in prepared statement binding in 9.2?  (Josh Berkus <josh@agliodbs.com>)
Ответы Re: Performance bug in prepared statement binding in 9.2?  (Andres Freund <andres@2ndquadrant.com>)
Список pgsql-performance
On 09/11/2013 02:35 PM, Josh Berkus wrote:
> All,
>
> We've confirmed that this issue is caused by having long-running idle
> transactions on the server.  When we disabled their queueing system
> (which prodiced hour-long idle txns), the progressive slowness went away.
>
> Why that should affect 9.X far more strongly than 8.4, I'm not sure
> about.  Does that mean that 8.4 was unsafe, or that this is something
> which *could* be fixed in later versions?
>
> I'm also confused as to why this would affect BIND time rather than
> EXECUTE time.
>


One thing that this made me wonder is why we don't have
transaction_timeout, or maybe transaction_idle_timeout.

cheers

andrew


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