Status of SMPng Network Stack

• FreeBSD 5.x and 6.x largely run the network stack without Giant

  • Some less mainstream components still need it

• From “Make it work” to “Make it work fast!”

  • Many workloads show significant improvements: databases, multi-thread/process TCP use, ...
  • Cost of locking hampers per-packet performance for specific workloads: forwarding/bridging PPS
  • UP performance sometimes sub-optimal
  • Of course, 4.x is the gold standard...

• Active work on performance measurement and optimization currently