Messages in this thread | | | Date | Thu, 17 Jan 2002 14:15:53 -0500 | Subject | Re: hires timestamps for netif_rx() | From | (bill davidsen) |
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In article <20020116.211251.35505694.davem@redhat.com> you write: | 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?
In the part of the message you snipped: > That's interesting, because when I call do_gettimeofday() instead of > get_fast_time(), I get different kinds of results that imply that these > are not equivalent. I'm running the kernel on a PIII.
I would think that was short for "Pentium-III" which should have TSC. -- bill davidsen <davidsen@tmr.com> CTO, TMR Associates, Inc Doing interesting things with little computers since 1979. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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