Re: pg_connect takes 3.0 seconds

Delays that are almost exactly 3 seconds over a network are almost always
some sort of network configuration issue.

Inside a datacenter, mis-configured load balancers or routers can cause low
level network issues that result in intermittent network delays of exactly 3
seconds (a loop in a routing network?).
DNS timeouts are often 3 seconds.

Not sure if any of the above is it, but this sounds like a network
configuration problem to me.

On 1/4/10 6:12 PM, "Dmitri Girski" <mitek17(at)gmail(dot)com> wrote:

> Hi everybody,
>
> I am running a PostgreSQL server 8.3.5 with a pretty much standard config.
>
> The web application server which runs Apache 1.3/PHP2.9  has an intermittent
> problem:
> pg_connect takes exactly 3.0 seconds. The usual connection time is 0.0045.
> The long request happens at approximate rate 1:100.
>
> I turned on logs on postgres server side, and there is nothing suspicious for
> me there. When a connection request comes, it is being served without any
> delay. 
>
> Could anyone point me to the direction in which I should investigate this
> problem further?
> Thank you in advance!
>
>
> PS The hardware is: Dell SC1435/4Gb/2x2.0GHz/Gentoo Linux.
> The database & web servers are in the 2 local subnets. 
>
>
> Dmitri.
>
>