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| author | Eric Dumazet | 2013-06-28 16:40:57 +0200 |
|---|---|---|
| committer | David S. Miller | 2013-07-02 03:07:15 +0200 |
| commit | aec0a40a6f78843c0ce73f7398230ee5184f896d (patch) | |
| tree | b9a68c7c98b2d036ba7396c55f717d17c50f12a4 /net/x25 | |
| parent | net: qmi_wwan: add TP-LINK MA260 (diff) | |
| download | kernel-qcow2-linux-aec0a40a6f78843c0ce73f7398230ee5184f896d.tar.gz kernel-qcow2-linux-aec0a40a6f78843c0ce73f7398230ee5184f896d.tar.xz kernel-qcow2-linux-aec0a40a6f78843c0ce73f7398230ee5184f896d.zip | |
netem: use rb tree to implement the time queue
Following typical setup to implement a ~100 ms RTT and big
amount of reorders has very poor performance because netem
implements the time queue using a linked list.
-----------------------------------------------------------
ETH=eth0
IFB=ifb0
modprobe ifb
ip link set dev $IFB up
tc qdisc add dev $ETH ingress 2>/dev/null
tc filter add dev $ETH parent ffff: \
protocol ip u32 match u32 0 0 flowid 1:1 action mirred egress \
redirect dev $IFB
ethtool -K $ETH gro off tso off gso off
tc qdisc add dev $IFB root netem delay 50ms 10ms limit 100000
tc qd add dev $ETH root netem delay 50ms limit 100000
---------------------------------------------------------
Switch netem time queue to a rb tree, so this kind of setup can work at
high speed.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/x25')
0 files changed, 0 insertions, 0 deletions