From 66e1e3b20cbbf99da63e6c1af0fc6d39c2ed099a Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Wed, 13 Jun 2007 01:03:53 -0700 Subject: [PATCH] [TCP]: Set initial_ssthresh default to zero in Cubic and BIC. Because of the current default of 100, Cubic and BIC perform very poorly compared to standard Reno. In the worst case, this change makes Cubic and BIC as aggressive as Reno. So this change should be very safe. Signed-off-by: David S. Miller --- net/ipv4/tcp_bic.c | 2 +- net/ipv4/tcp_cubic.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/net/ipv4/tcp_bic.c b/net/ipv4/tcp_bic.c index 281c9f913257..dd9ef65ad3ff 100644 --- a/net/ipv4/tcp_bic.c +++ b/net/ipv4/tcp_bic.c @@ -29,7 +29,7 @@ static int fast_convergence = 1; static int max_increment = 16; static int low_window = 14; static int beta = 819; /* = 819/1024 (BICTCP_BETA_SCALE) */ -static int initial_ssthresh = 100; +static int initial_ssthresh; static int smooth_part = 20; module_param(fast_convergence, int, 0644); diff --git a/net/ipv4/tcp_cubic.c b/net/ipv4/tcp_cubic.c index 14224487b16b..ebfaac2f9f46 100644 --- a/net/ipv4/tcp_cubic.c +++ b/net/ipv4/tcp_cubic.c @@ -29,7 +29,7 @@ static int fast_convergence __read_mostly = 1; static int max_increment __read_mostly = 16; static int beta __read_mostly = 819; /* = 819/1024 (BICTCP_BETA_SCALE) */ -static int initial_ssthresh __read_mostly = 100; +static int initial_ssthresh __read_mostly; static int bic_scale __read_mostly = 41; static int tcp_friendliness __read_mostly = 1;