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Seeing higher latency with lagopus when using in 64 bit mode. We are seeing latency values around 4 times more when using 64bit lagopus vs 32bit lagopus.
What is the typical latency expected from lagopus switch ?
Also, is there any configurations that can be tried to improve the latency?
There are some ring and burst custom options, will that help?
--hashtype TYPE: Select hash type for flow cache
city64 CityHash(64bit) (default)
intel64 Intel_hash64
--fifoness MODE: Select FIFOness mode, MODE is one of none, port, or flow
flow : FIFOness per each flow (default.)
port : FIFOness per each port.
Issue Type
Summary
Seeing higher latency with lagopus when using in 64 bit mode. We are seeing latency values around 4 times more when using 64bit lagopus vs 32bit lagopus.
--hashtype TYPE: Select hash type for flow cache
city64 CityHash(64bit) (default)
intel64 Intel_hash64
--fifoness MODE: Select FIFOness mode, MODE is one of none, port, or flow
flow : FIFOness per each flow (default.)
port : FIFOness per each port.
dsl config used:
channel channel01 create -dst-addr 127.0.0.1 -protocol tcp
controller controller01 create -channel channel01 -role equal -connection-type main
interface interface01 create -type ethernet-dpdk-phy -device "net_pcap0,iface=veth1"
interface interface02 create -type ethernet-dpdk-phy -device "net_pcap1,iface=veth5"
interface interface03 create -type ethernet-dpdk-phy -device "net_pcap2,iface=veth7"
port port300 create -interface interface01
port port301 create -interface interface02
port port302 create -interface interface03
bridge br-switch create -controller controller01 -port port300 300 -port port301 301 -port port302 302 -dpid 0x1
Bug report
(If feature proposal, delete this section)
Expected behavior
Expected lower latency
(What you should see instead)
Actual behavior
higher latency in the range of ms.
(What actually happens)
Environment
(Paste commit hash, OS, Hardware configuration)
Steps to reproduce
(How one can reproduce the issue - this is very important)
(Include make options and/or command line options)
Relevant logs
(Paste any relevant logs - please use code blocks to format console output,
logs, and code as it's very hard to read otherwise.)
Component
(If you know, specify the Lagopus component name which has the bug. Dataplane, datastore, OpenFlow agent...)
Possible fixes
(If you can, link to the line of code that might be responsible for the problem)
Feature proposal
(If bug report, delete this section)
Proposal
(Function list of proposing feature)
Component
(Specify the Lagopus component name. Dataplane, datastore, OpenFlow agent...)
Links / reference
(If you can, link the pages of related information)
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