nsdi2015-slides

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Megaflow vs. Microflow Cache Performance ● Microflow cache: – k 0 + k 1 + ∙∙∙ + k 24 lookups for first packet in microflow – 1 lookup for later packets in microflow ● Megaflow cache: – k c lookups for (almost) every packet ● ● k c > 1 is normal, so megaflows perform worse in common case! Best of both worlds would be: – k c lookups for first packet in microflow – 1 lookup for later packets in microflow
OVS Cache v3: Dual Caches μ hit Microflow Cache M hit miss Megaflow Cache OpenFlow Tables userspace kernel
Page 1 and 2: The Design and Implementation of Op
Page 3 and 4: Where is Open vSwitch Used? ● Bro
Page 5 and 6: Use Case: Network Virtualization Op
Page 7 and 8: Non-solutions ● All of these help
Page 9 and 10: Microflow cache (1 hash lookup) pac
Page 11 and 12: Using a More Expensive Cache OpenFl
Page 13 and 14: Lazy Approach to Populating Cache S
Page 15: Making Megaflows Better ● Megaflo

nsdi2015-slides

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