Re: Van Jacobson's net channels and real-time

[David S. Miller]

From: Jörn Engel <joern@xxxxxxxxxxxxxxxxxxxx>
Date: Sat, 22 Apr 2006 13:48:46 +0200

> Unless I completely misunderstand something, one of the main points of
> the netchannels if to have *zero* fields written to by both producer
> and consumer.  Receiving and sending a lot can be expected to be the
> common case, so taking a performance hit in this case is hardly a good
> idea.

That's absolutely correct, this is absolutely critical to
the implementation.

If you're doing any atomic operations, or any write operations by both
consumer and producer to the same cacheline, you've broken things :-)
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