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authorSangtae Ha <sangtae.ha@gmail.com>2011-03-14 03:52:17 -0400
committerDavid S. Miller <davem@davemloft.net>2011-03-14 18:54:42 -0400
commit2b4636a5f8ca547000f6aba24ec1c58f31f4a91d (patch)
tree4b46132a943bab1edaf61ac49b96d45dfc8907e2 /net/ipv4
parent3b585b34493ec9db382d6c325d4ed77b9eb2d2a5 (diff)
tcp_cubic: make the delay threshold of HyStart less sensitive
Make HyStart less sensitive to abrupt delay variations due to buffer bloat. Signed-off-by: Sangtae Ha <sangtae.ha@gmail.com> Acked-by: Stephen Hemminger <shemminger@vyatta.com> Reported-by: Lucas Nussbaum <lucas.nussbaum@loria.fr> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4')
-rw-r--r--net/ipv4/tcp_cubic.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/net/ipv4/tcp_cubic.c b/net/ipv4/tcp_cubic.c
index 5e0491d742ca..7172c129ff19 100644
--- a/net/ipv4/tcp_cubic.c
+++ b/net/ipv4/tcp_cubic.c
@@ -39,7 +39,7 @@
39 39
40/* Number of delay samples for detecting the increase of delay */ 40/* Number of delay samples for detecting the increase of delay */
41#define HYSTART_MIN_SAMPLES 8 41#define HYSTART_MIN_SAMPLES 8
42#define HYSTART_DELAY_MIN (2U<<3) 42#define HYSTART_DELAY_MIN (4U<<3)
43#define HYSTART_DELAY_MAX (16U<<3) 43#define HYSTART_DELAY_MAX (16U<<3)
44#define HYSTART_DELAY_THRESH(x) clamp(x, HYSTART_DELAY_MIN, HYSTART_DELAY_MAX) 44#define HYSTART_DELAY_THRESH(x) clamp(x, HYSTART_DELAY_MIN, HYSTART_DELAY_MAX)
45 45