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>>>>> "Jamie" == Jamie Lokier <lk@tantalophile.demon.co.uk> writes: Jamie> Nice point! Only valid for TCP & UDP though. Jamie> When people want _real_ low latency, they don't use TCP or UDP, Jamie> and they certainly don't put data checksums at the start. They Jamie> still aim for zero copies. That pass, even over cached data, Jamie> is still significant. In this case you really want to do a user space driver implementation to avoid the cost of context switches. This is how a lot of people use the Myrinet (afaik) and there were also some of the guys at CERN who did a similar driver for the AceNIC at the same time I wrote the first version of the 'normal' driver. Jes - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org Please read the FAQ at http://www.tux.org/lkml/ | ||||||||||||
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