Hochwasser/IDEAS.md

feature ideas

• more draw modes
  • patterns
    • https://github.com/MarcelMue/konstrukt ?
  • image scaling
  • snake
  • sheep.exe
  • offset rand: random size/color
• proper public api for the fast network handling
  • Fluter abstraction, implementing Reader to update commands? ringbuffer?
• support animations / frame concept
• support (stackable) effects
• make job distribution fully P2P using 2D CAN / Z-ordercurve adressing

performance considerations

• server limitations: rendering is bottleneck. maybe artificial limitations (commands per draw, connections per IP, queue)
  • when network isn't bottleneck: fetch each pixel & only send updates for wrong color (?)
  • sync sending with draw frequency (?)
  • use virtual subnets for more IPs (ipv6?) (?)
• client limitations: PCI bus is bottleneck? depends on HW I guess
  • distribute across cores for max PCI bus saturation (?)
  • use userland tcp stack (e.g. https://github.com/google/netstack or even https://github.com/luigirizzo/netmap)
• network limitations: packet size, ACKs, congestion
  • treat benchmarks on loopback with care, it has no packet size limitation. real world interfaces will enforce a max size of 1514 bytes [1]
  • avoid packet split if >1514B (?)
  • use TCP_NODELAY (?)
  • https://stackoverflow.com/questions/5832308/linux-loopback-performance-with-tcp-nodelay-enabled
• cognitive limitations: draw order
  • randomized pixel order should give a better idea of the image with equal dominance (?)
  • use an energy function like in seam carving to prioritize regions?