path: root/net/ipv4/Kconfig
diff options
authorLawrence Brakmo <brakmo@fb.com>2016-06-08 21:16:45 -0700
committerDavid S. Miller <davem@davemloft.net>2016-06-10 23:07:49 -0700
commit699fafafab6d765f12367b3ce0816e64ae19d1e8 (patch)
treef43744c64fd040388ab6c55c3edaa186654ad21b /net/ipv4/Kconfig
parenttcp: add in_flight to tcp_skb_cb (diff)
tcp: add NV congestion control
TCP-NV (New Vegas) is a major update to TCP-Vegas. An earlier version of NV was presented at 2010's LPC. It is a delayed based congestion avoidance for the data center. This version has been tested within a 10G rack where the HW RTTs are 20-50us and with 1 to 400 flows. A description of TCP-NV, including implementation details as well as experimental results, can be found at: http://www.brakmo.org/networking/tcp-nv/TCPNV.html Signed-off-by: Lawrence Brakmo <brakmo@fb.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/Kconfig')
1 files changed, 16 insertions, 0 deletions
diff --git a/net/ipv4/Kconfig b/net/ipv4/Kconfig
index 238225b0c970..50d6a9b49f6c 100644
--- a/net/ipv4/Kconfig
+++ b/net/ipv4/Kconfig
@@ -532,6 +532,22 @@ config TCP_CONG_VEGAS
window. TCP Vegas should provide less packet loss, but it is
not as aggressive as TCP Reno.
+config TCP_CONG_NV
+ tristate "TCP NV"
+ default n
+ ---help---
+ TCP NV is a follow up to TCP Vegas. It has been modified to deal with
+ 10G networks, measurement noise introduced by LRO, GRO and interrupt
+ coalescence. In addition, it will decrease its cwnd multiplicatively
+ instead of linearly.
+ Note that in general congestion avoidance (cwnd decreased when # packets
+ queued grows) cannot coexist with congestion control (cwnd decreased only
+ when there is packet loss) due to fairness issues. One scenario when they
+ can coexist safely is when the CA flows have RTTs << CC flows RTTs.
+ For further details see http://www.brakmo.org/networking/tcp-nv/
tristate "Scalable TCP"
default n