From: Sangtae Ha <sangtae.ha@gmail.com>
To: Lucas Nussbaum <lucas.nussbaum@loria.fr>
Cc: Stephen Hemminger <stephen.hemminger@vyatta.com>,
David Miller <davem@davemloft.net>, Injong Rhee <rhee@ncsu.edu>,
Bill Fink <billfink@mindspring.com>, <netdev@vger.kernel.org>,
Sangtae Ha <sangtae.ha@gmail.com>
Subject: [PATCH 2/3] tcp_cubic: make the delay threshold of HyStart less sensitive
Date: Sun, 13 Mar 2011 20:04:02 -0400 [thread overview]
Message-ID: <1300061042-24180-1-git-send-email-sangtae.ha@gmail.com> (raw)
Make HyStart less sensitive to abrupt delay variations due to buffer bloat.
Signed-off-by: Sangtae Ha <sangtae.ha@gmail.com>
---
net/ipv4/tcp_cubic.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/net/ipv4/tcp_cubic.c b/net/ipv4/tcp_cubic.c
index ab9f888..b758db1 100644
--- a/net/ipv4/tcp_cubic.c
+++ b/net/ipv4/tcp_cubic.c
@@ -39,7 +39,7 @@
/* Number of delay samples for detecting the increase of delay */
#define HYSTART_MIN_SAMPLES 8
-#define HYSTART_DELAY_MIN (2U<<3)
+#define HYSTART_DELAY_MIN (4U<<3)
#define HYSTART_DELAY_MAX (16U<<3)
#define HYSTART_DELAY_THRESH(x) clamp(x, HYSTART_DELAY_MIN, HYSTART_DELAY_MAX)
--
1.7.0.4
reply other threads:[~2011-03-14 0:04 UTC|newest]
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