• NetworkingPerformanceProject

Networking Performance Project

A list of measurements we need to take and, if possible, automate. Results should be pointed to by this page, but not directly stored here.

Tools

• Conductor: https://github.com/gvnn3/conductor

• pkt-gen: Currently in the tree in src/tools/tools/netmap

• iperf: https://iperf.fr

• netperf: https://github.com/gvnn3/netpeerf) (a project that contains Conductor scripts and some results

Things to Measure

A list of things we ought to measure in our tests.

* Config lock-related

• ioctls/etc.
• measure read/write lock ratio
  • global ifnet
  • ifnet address locks + ifaddr
  • lltable + llentry
  • firewall lists
  • nfirewall rules
  • nhost cache - IPv6
  • routing table + rtentries
  • inpcbinfo
    • UDP
    • TCP
    • syncache
  • nd6 prefix list, etc.
  • connection groups
  • ethernet bridge config
  • SNMP-monitored things
  • netisr
  • BPF
• new connection setup
• investigate Nicholais file descriptor optimisation = non-linear fd allocation (possibly not a big deal for real http)
• Lock traces for common paths, stats
• Cache-line contention measurements
• packet narrative traces
• measurement scenarios:
  • classic web
  • web w/ lagg
  • varnish
  • mySQL
  • tunnel services / VPN / L2TP
  • (full) BGP actively changed (peak 25/s ?)
  • NFS scenarios
  • different LAN sites
  • dynamic firewall rules
  • ethernet bridge
  • DNS-like (heavy UDP)
  • Add VNET to any of the above as well.