Date: Wed, 7 Nov 2007 14:41:57 +0100
Hello,
In the documentation, there is an example of TCP tuning for 2.4 kernels.
Are there a lot of differences for 2.6 kernels?
Does anyone have examples or guidelines for 2.6 and Haproxy ?
We are using Haproxy on a 1000Mbps Ethernet link and have some troubles after 3000+ simultaneous connections: connection establishment is sometime very long (10 or 20 sec).
The load balancer and backends are not CPU/memory overloaded, so we are looking for problems on TCP configuration on the load balancer.
The configuration is:
net.ipv4.netfilter.ip_conntrack_max=65536
net.ipv4.netfilter.ip_conntrack_tcp_timeout_fin_wait=30
net.ipv4.netfilter.ip_conntrack_tcp_timeout_time_wait=15
net.ipv4.ip_local_port_range = 1024 60999
net.ipv4.tcp_fin_timeout = 30
net.ipv4.tcp_max_syn_backlog = 4096
net.ipv4.tcp_max_tw_buckets = 262144
net.ipv4.tcp_max_orphans = 262144
net.ipv4.tcp_keepalive_time = 300
net.ipv4.tcp_tw_recycle = 1
net.ipv4.tcp_timestamps = 0
net.ipv4.tcp_ecn = 0
net.ipv4.tcp_sack = 1
net.ipv4.tcp_dsack = 0
net.core.rmem_max = 262143
net.core.rmem_default = 262143
net.ipv4.tcp_rmem = 16384 65536 524288
net.ipv4.tcp_wmem = 16384 349520 699040
Thanks
Matthieu Huguet
Administrateur Systeme
SARL Prizee.com
22 Allée Alan Turing
63000 CLERMONT FERRAND
FRANCE
Tél : 04 73 44 10 30
Fax : 04 73 44 10 31
matthieu_huguet#prizee.fr
http://www.prizee.com <http://www.prizee.com/>
