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Disable TCP inflight limiter by default.

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It was experimental and interferes with the normal congestion control
algorithms by instating a separate, possibly lower, ceiling for the
amount of data that is in flight to the remote host.  With high speed
internet connections the inflight limit frequently has been estimated
too low due to the noisy nature of the RTT measurements.

This code gives way for the upcoming pluggable congestion control
framework.  It is the task of the congestion control algorithm to
set the congestion window and amount of inflight data without external
interference.

Reviewed by:	lstewart
MFC after:	1 week
Removal after:	1 month
This commit is contained in:
Andre Oppermann 2010-08-14 20:40:55 +00:00
parent ad8e331bf2
commit bee4e5afa9
1 changed files with 1 additions and 1 deletions
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2
sys/netinet/tcp_subr.c
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@ -221,7 +221,7 @@ SYSCTL_VNET_INT(_net_inet_tcp, OID_AUTO, isn_reseed_interval, CTLFLAG_RW,
SYSCTL_NODE(_net_inet_tcp, OID_AUTO, inflight, CTLFLAG_RW, 0,
"TCP inflight data limiting");
static VNET_DEFINE(int, tcp_inflight_enable) = 1;
static VNET_DEFINE(int, tcp_inflight_enable) = 0;
#define V_tcp_inflight_enable VNET(tcp_inflight_enable)
SYSCTL_VNET_INT(_net_inet_tcp_inflight, OID_AUTO, enable, CTLFLAG_RW,
&VNET_NAME(tcp_inflight_enable), 0,