Commit 75be5e47 authored by Stephen Hemminger's avatar Stephen Hemminger Committed by Greg Kroah-Hartman

[PATCH] tcp: BIC max increment too large

The max growth of BIC TCP is too large. Original code was based on
BIC 1.0 and the default there was 32. Later code (2.6.13) included
compensation for delayed acks, and should have reduced the default
value to 16; since normally TCP gets one ack for every two packets sent.

The current value of 32 makes BIC too aggressive and unfair to other
flows.
Submitted-by: default avatarInjong Rhee <rhee@eos.ncsu.edu>
Signed-off-by: default avatarStephen Hemminger <shemminger@osdl.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent 0b7a194c
...@@ -27,7 +27,7 @@ ...@@ -27,7 +27,7 @@
*/ */
static int fast_convergence = 1; static int fast_convergence = 1;
static int max_increment = 32; static int max_increment = 16;
static int low_window = 14; static int low_window = 14;
static int beta = 819; /* = 819/1024 (BICTCP_BETA_SCALE) */ static int beta = 819; /* = 819/1024 (BICTCP_BETA_SCALE) */
static int low_utilization_threshold = 153; static int low_utilization_threshold = 153;
......
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