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    SubjectRe: hires timestamps for netif_rx()
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       From: Wilson Yeung <wilson@whack.org>
    Date: Wed, 16 Jan 2002 18:45:02 -0800 (PST)

    Notice that all the timestamps are the same, which led me to believe that
    xtime was being gotten directly.

    This is what happens only if your CPU lacks a timestamp counter
    (TSC on x86). What kind of CPU are you performing this experiment
    on?
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