Date: Sat, 14 Aug 2010 20:40:55 +0000 (UTC) From: Andre Oppermann <andre@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r211315 - head/sys/netinet Message-ID: <201008142040.o7EKete7038340@svn.freebsd.org>
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Author: andre Date: Sat Aug 14 20:40:55 2010 New Revision: 211315 URL: http://svn.freebsd.org/changeset/base/211315 Log: Disable TCP inflight limiter by default. 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 Modified: head/sys/netinet/tcp_subr.c Modified: head/sys/netinet/tcp_subr.c ============================================================================== --- head/sys/netinet/tcp_subr.c Sat Aug 14 20:12:10 2010 (r211314) +++ head/sys/netinet/tcp_subr.c Sat Aug 14 20:40:55 2010 (r211315) @@ -221,7 +221,7 @@ SYSCTL_VNET_INT(_net_inet_tcp, OID_AUTO, 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,
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