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New HFT frontier: Kernel bypass

(Last Updated On: January 3, 2017)

New HFT frontier: Kernel bypass

Lockless multithreading is important but we talk about that in previous postings:

Comparison: Lockless programming with atomics in C++ 11 vs. mutex and RW-locks

These hardware cards are standard for HFT firms

https://blog.cloudflare.com/kernel-bypass/

In operating systems:

NetMap

Status:

Committed to -CURRENT

 

Author:

Luigi Rizzo

 

Web:

http://info.iet.unipi.it/~luigi/netmap/, http://svn.freebsd.org/changeset/base/227614

NetMap is a framework for high-performance direct-to-hardware packet IO, offering low latency and high PPS rates to userland applications while bypassing any kernel-side packet processing. With NetMap, it is trivially possible to fully saturate a 10 Gbps network interface with minimal packet sizes.

https://wiki.freebsd.org/WhatsNew/FreeBSD10

 

https://blog.cloudflare.com/single-rx-queue-kernel-bypass-with-netmap/

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