Add notes on using a traffic limiter for benchmarks

diff --git a/traffic-limiter.txt b/traffic-limiter.txt
new file mode 100644 (file)
index 0000000..6b1b24d
--- /dev/null
+++ b/traffic-limiter.txt
@@ -0,0 +1,12 @@
+# Limiting traffic rate to 1mbit to Amazon US-West data center (204.246.0.0/16)
+tc qdisc add dev eth0 root handle 1: cbq avpkt 1000 bandwidth 1000mbit
+tc class add dev eth0 parent 1: classid 1:1 cbq rate 1mbit allot 1500 prio 5 bounded isolated
+tc filter add dev eth0 parent 1: protocol ip prio 16 u32 match ip dst 204.246.0.0/16 flowid 1:1
+
+# List traffic classifier state
+tc qdisc show dev eth0
+tc class show dev eth0
+tc filter show dev eth0
+
+# To clear
+tc qdisc del dev eth0 root