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 <[email protected]>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: [email protected] > [mailto:[email protected]] Namens Joe Williams > Verzonden: dinsdag 22 december 2009 18:12 > Aan: [email protected] > 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: [email protected] > Blog: http://www.joeandmotorboat.com/ > > _______________________________________________ > varnish-misc mailing list > [email protected] > http://projects.linpro.no/mailman/listinfo/varnish-misc > > _______________________________________________ > varnish-misc mailing list > [email protected] > http://projects.linpro.no/mailman/listinfo/varnish-misc >
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