Slow connections

[Michael Fischer]

haproxy has never supported keep-alive HTTP connections, to my knowledge.

--Michael

On Tue, Dec 22, 2009 at 3:41 PM, Henry Paulissen <h.paulissen at qbell.nl>wrote:

> Next one.
>
> Did you tune the tcp fin timeout? (on both servers)
> Linux will standard holds all connection open till it hits the fin timeout
> length (tcp_fin and tcp_fin2).
> We decreased it to 3.
>
> HAProxy support:
> Do you forced a http connection close in haproxy?
> If all connections are in keep-alive your queue will fill up real quick.
>
> Henry
>
> -----Oorspronkelijk bericht-----
> Van: Joe Williams [mailto:joe at joetify.com]
> Verzonden: woensdag 23 december 2009 0:23
> Aan: Henry Paulissen
> CC: varnish-misc at projects.linpro.no
> Onderwerp: Re: Slow connections
>
>
> Thanks Henry, nf_conntrack_max is set high on both machines. I've had
> the full table issue before :P
>
>
>
> On 12/22/09 2:58 PM, Henry Paulissen 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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>
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