Schedule granularity

[Benjie Chen]

good point.

i will make this change to the lcs tree at some point, soon.

benjie


On Tue, Jul 03, 2001 at 08:47:47AM -0700, Eddie Kohler wrote:
> > you must use them with the SetTimestamp element, which sets the
> > timestamp annotation of the packet. you should set the timestamp
> > when the packet comes into the configuration. SetTimestamp uses
> > gettimeofday for timestamp. gettimeofday uses the timestamp/cycle
> > counter on the chip to get the time, so i believe everytime you
> > call it you will get a different value.
> 
> Yo! -- Shouldn't PollDevice call gettimeofday and set the timestamp
> annotation? The netif_rx routine calls gettimeofday() automatically, which
> means that by the time a packet reaches FromDevice, it has a correct
> timestamp. I think that PollDevice should always produce identical packets
> to FromDevice. This behavior could be #ifdef'ed to a new Click `--enable'
> option, so for your HYPERFAST BENCHMARKS :) you could turn it off. But it
> is better for most people if packets emitted by PollDevice are equivalent
> to packets emitted by FromDevice.
> 
> love,
> ed

-- 
benjie chen
benjie at lcs.mit.edu