• Performance test sites
  • http://netboot.me/
  • http://boot.fedoraproject.org/index
  • http://boot.kernel.org/
• Test env:
  • KVM with different kind of emulated NIC.
    • Direct link.
      • User mode network stack.
      • With TUN/TAP
    • Bridge/NAT with TUN/TAP.
  • Native gPXE.
• Trace the issue that gPXE download speed slow on KVM.

• This benchmark is addressed on the difference between user-mode-network-stack and tap interface of qemu-kvm.
• Image is placed on Host OS, to minimize the real network effect.
• Parameters for user mode network stack: -net nic -net user,tftp=/tftproot,bootfile=gpxe_script
• Parameters for TAP network: -net nic -net tap,ifname=tap0,script=no
• Default interface for guest OS is Realtek 8139.
• Get a disk image with 268,435,456 bytes.

Recent TCP updates is a lot different from previous base of wscale branch. Still working on it.

• Test target image on BKO: http://130.239.17.17/bko/live/fedora/f13-alpha/i686/initrd0.img
• Image size: 43,355,267 bytes
• Linux wget speed: 1MByte/s (My Internet link speed is 10Mbit/s, it's about the full spped.)
• Tested it with emulated rtl8139 of KVM, and Native on rtl8139 hardware.