Re: hires timestamps for netif_rx()

From: Wilson Yeung (wilson@whack.org)
Date: Wed Jan 16 2002 - 20:03:58 EST


On Wed, 16 Jan 2002, David S. Miller wrote:
> I'd love to have a run-time tuneable kernel parameter that lets me use
> do_gettimeofday() instead of get_fast_time for received packet
> timestamping. Does this seem reasonable?
>
> Can you demonstrate a difference in accurace between these two
> routines on any architecture :-)

The discreprency is that get_fast_time() returns the current value of
xtime, while do_gettimeofday() may actually calculate the time and
consider both xtime and the jiffies.

-
To unsubscribe from this list: send the line "unsubscribe linux-net" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html



This archive was generated by hypermail 2b29 : Wed Jan 23 2002 - 21:01:13 EST