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authorStephen Hemminger <shemminger@osdl.org>2005-11-01 15:26:45 -0800
committerArnaldo Carvalho de Melo <acme@mandriva.com>2005-11-02 21:24:01 -0200
commit450b5b18983cc15f4d27bd3f62901e02281e818b (patch)
treedea7c8dbd045cde1d4fc46b63ff9c5d66f39f536
parent8713dbf05754aa777f31bf491cb60a111f7ad828 (diff)
[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: Injong Rhee <rhee@eos.ncsu.edu> Signed-off-by: Stephen Hemminger <shemminger@osdl.org> Acked-by: Ian McDonald <imcdnzl@gmail.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
-rw-r--r--net/ipv4/tcp_bic.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/net/ipv4/tcp_bic.c b/net/ipv4/tcp_bic.c
index 6d80e063c18..ae35e060904 100644
--- a/net/ipv4/tcp_bic.c
+++ b/net/ipv4/tcp_bic.c
@@ -27,7 +27,7 @@
*/
static int fast_convergence = 1;
-static int max_increment = 32;
+static int max_increment = 16;
static int low_window = 14;
static int beta = 819; /* = 819/1024 (BICTCP_BETA_SCALE) */
static int low_utilization_threshold = 153;