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    SubjectRe: Multithreaded TCP/IP stack

    On 13-Jul-2000 Andi Kleen wrote:
    > The 2.2 stack is under two independent locks (kernel lock and bh lock).
    > In later 2.2 the expensive parts of the TX path (copy
    > and checksum) run outside the kernel lock. About half of Incoming runs
    > in the serialized NETBH, but you can save a lot of that by using
    > a NIC that that supports hardware checksumming like the Tornado.

    Is this the 3Com 990 series? Is there Linux support for the hardware
    checksumming?

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