Messages in this thread | | | Subject | Re: Fire Engine?? | From | Arjan van de Ven <> | Date | Wed, 26 Nov 2003 22:34:10 +0100 |
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On Wed, 2003-11-26 at 20:30, David S. Miller wrote:
> > - Doing gettimeofday on each incoming packet is just dumb, especially > > when you have gettimeofday backed with a slow southbridge timer. > > This shows quite badly on many profile logs. > > I still think right solution for that would be to only take time stamps > > when there is any user for it (= no timestamps in 99% of all systems) > > Andi, I know this is a problem, but for the millionth time your idea > does not work because we don't know if the user asked for the timestamp > until we are deep within the recvmsg() processing, which is long after > the packet has arrived.
question: do we need a timestamp for every packet or can we do one timestamp per irq-context entry ? (eg one timestamp at irq entry time we do anyway and keep that for all packets processed in the softirq) [unhandled content-type:application/pgp-signature] | |