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cFosSpeed introduces new core network code with stunning speed improvements

With the cFosSpeed 11 we introduce new core network code with stunning and dramatic speed improvements. cFosSpeed now works smoothly in conjunction with 10GE networks cards.

It took a long time to develop and we are very proud of it!

Extensive re-write of the cFosSpeed core networking code comes with this new features:

  • Special speed-up for pass-through LAN traffic (not traffic shaped)
  • Designed to keep all out-of-band packet info intact, resulting in
    improved ad hoc VPN compatibility
  • Improved analysis of networking edge cases
  • Support for NDIS header/data split
  • Additional speed improvements of Traffic Shaping path
  • Support for Task Offloading: Checksum Offloading (IP and TCP/UDP), Large Segment Offloading and Receive Segment Coalescing

For LAN traffic the new cFosSpeed version consumes so little CPU load it’s hardly noticeable, even at full blast 10 GBit/s LAN traffic. For the Traffic Shaping path there are also improvements in analyzing the traffic and avoiding memory allocations and copies.

As far as we know, cFosSpeed is the only third-party NDIS filter driver which supports NDIS Task Offloading. In order to test Task Offloading, you need to make sure that no driver is in the stack which prevents Task Offloading. E.g., Wireshark packet capture driver (pcap & npcap), VMware bridge protocol and anti-virus filter drivers could all prevent Task Offloading to work. In addition: after removing any of those drivers from the stack, you need to reboot the system,otherwise Windows will not enable Task Offloading again.

These features are currently in beta. Just follow our cFosSpeed Whats New Text to read the latest development news.

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cFos TeamcFosSpeed introduces new core network code with stunning speed improvements