On Mon, 26 Aug 2002, Xiaoliang (David) Wei wrote:
> Hi Ben and Jamal,
> Are you guys sure that getdayoftime per packet is a big overhead on
> Gbps connection?
We may be talking about different things;
I am talking about do_gettimeofday -- which is very expensive.
Anyone who has time could look at improving that. It is run per incoming
packet.
> Do you compare the performance with getdayoftime per packet and
> without?
I think it would be pretty noticeable if you got rid of the
per-incoming-packet calls to do_gettimeofday
> I guess RFC 1323 specifies that each packet should have a timestamp
> (although not from getdayoftime).
In Linux, this is cleverly based on the system clock (jiffies).
cheers,
jamal
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