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authornbd <nbd@3c298f89-4303-0410-b956-a3cf2f4a3e73>2012-06-27 22:32:47 +0000
committernbd <nbd@3c298f89-4303-0410-b956-a3cf2f4a3e73>2012-06-27 22:32:47 +0000
commitb6422914a36c4499d68ff1c5cfdabb7640275cb1 (patch)
tree7c38868379991cd0fb8ba2e90612655339481109 /target/linux/mpc83xx
parent126de14e4ccdcf7ef1c5799c310b9b388f882957 (diff)
kernel: switch openwrt default to TCP cubic from westwood (patch by Dave Täht)
Despite Westwood's theoretical advantages, in nearly every benchmark we ran last year, TCP cubic won, whether it be on correct RTT estimates, amount of buffering, responsiveness, etc. on current hardware and software designs. (both need timestamps on to work well, besides) TCP cubic is better maintained and understood than westwood, also. While a scenario where westwood would win possibly exists, there is too much buffering in the wifi stack in particular at present, to see any improvement. If you wish to exercise various TCPs under contention, the current svn head of netperf (2.6) has options to switch congestion control agorithms on the fly, as does iperf. git-svn-id: svn://svn.openwrt.org/openwrt/trunk@32514 3c298f89-4303-0410-b956-a3cf2f4a3e73
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