Slow connections

[Michael Fischer]

Are you seeing any increased TCP send queue lengths on the haproxy side, or
TCP receive queue lengths on the Varnish side?  (netstat -a)  That might
provide some clue as to what's going on.

--Michael

On Tue, Dec 22, 2009 at 2:58 PM, Henry Paulissen <h.paulissen at qbell.nl>wrote:

> Have a look to the conntrack setting in the kernel (sysctl) on both sides.
> It could be that your conntrack is full (connectrack only exists if you use
> iptables with netfilter_conntrack).
>
> Regards,
> Henry
>
> -----Oorspronkelijk bericht-----
> Van: varnish-misc-bounces at projects.linpro.no
> [mailto:varnish-misc-bounces at projects.linpro.no] Namens Joe Williams
> Verzonden: dinsdag 22 december 2009 18:12
> Aan: varnish-misc at projects.linpro.no
> Onderwerp: Slow connections
>
>
> I am seeing a good amount (1/100) of connections to varnish (from
> haproxy) taking 3 seconds. My first thought was the connection backlog
> but somaxconn and listen_depth are both set higher than the number of
> connections. Anyone have any suggestions on how to track down what is
> causing this or settings I can use to try to aleviate it?
>
> Thanks.
>
> -Joe
>
> --
> Name: Joseph A. Williams
> Email: joe at joetify.com
> Blog: http://www.joeandmotorboat.com/
>
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