Slow connections

[Joe Williams]

Michael,

I've looked at it for a bit and see 0's across the board for the 
connections between the two machines.

To that end it looks like I rarely have above 500 connections into varnish.

-Joe


On 12/22/09 3:24 PM, Michael Fischer wrote:
> 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 
> <mailto: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>
>     [mailto: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
>     <mailto: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 <mailto:joe at joetify.com>
>     Blog: http://www.joeandmotorboat.com/
>
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-- 
Name: Joseph A. Williams
Email: joe at joetify.com
Blog: http://www.joeandmotorboat.com/

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