On Aug 08, 1999 at 02:27:53PM -0700, Rodney W. Grimes wrote:
> > I've just committed the revised TCP timer code. There are some
> > user visible changes:
> >
> > User visible TCP timers are now in units of the system clock
> > (10ms for the i386), not those of the slowtimeout (500ms). So
> > if you have customized one of these values, (e.g.: net.inet.tcp.keepintvl),
> > you'll need to multiply it appropriately to keep the same interval.
> >
> > Also, some new sysctls have been added:
>
> I didn't think I would ever see this!! Good job, hats off to you and
> assoctiates!
>
> >
> > net.inet.tcp.delacktime: 20
> > Specifies the timeout for delayed acks (200ms).
> > net.inet.tcp.slowstart_flightsize: 1
> > Specifies how many packets are included in the initial
> > slow-start flight. Setting this value to 0 will probably
> > result in a non-working system. Choosing a high value
> > would be considered antisocial.
> > net.inet.tcp.local_slowstart_flightsize: 65535
> > Same as above, but only applies to slowstart on "local"
> > networks. Note that the flightsize is constrained by
> > the receiver's advertised window size.
>
> One question though, how is ``local'' defined?
The same way as it has been; in_localaddr(). Basically, if the
machine is on the same network, (or subnet, depending on the
net.inet.ip.subnets_are_local setting).
--
Jonathan
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