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:[email protected]] Verzonden: woensdag 23 december 2009 0:23 Aan: Henry Paulissen CC: [email protected] 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: [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
