On 10/18/05, Márcio Oliveira <moliveira@xxxxxxxx> wrote:
> Anybody knows how can I reduce the idle connections (TCP, UDP, ...)
> timeout in Linux systems?
At the server-side, check the file
/usr/src/linux/net/ipv4/netfilter/ip_conntrack_proto_tcp.c
..
static unsigned long tcp_timeouts[]
= { 30 MINS, /* TCP_CONNTRACK_NONE, */
5 DAYS, /* TCP_CONNTRACK_ESTABLISHED, */
2 MINS, /* TCP_CONNTRACK_SYN_SENT, */
60 SECS, /* TCP_CONNTRACK_SYN_RECV, */
2 MINS, /* TCP_CONNTRACK_FIN_WAIT, */
2 MINS, /* TCP_CONNTRACK_TIME_WAIT, */
10 SECS, /* TCP_CONNTRACK_CLOSE, */
60 SECS, /* TCP_CONNTRACK_CLOSE_WAIT, */
30 SECS, /* TCP_CONNTRACK_LAST_ACK, */
2 MINS, /* TCP_CONNTRACK_LISTEN, */
};
Change the TCP_CONNTRACK_TIME_WAIT field and recompile the kernel.
At the client side,
echo 100 > /proc/sys/net/ipv4/tcp_keepalive_time
where 100 is the number of seconds after which the client will send
tcp-keepalive packets to reset the timer at the server side.
./h
--
Operating Systems and Computer Architecture Research - University of Cincinnati
http://www.ececs.uc.edu/~mohapth
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