KMountPoint::probablySlow and cifs mount points

[Alexander Neundorf]

On Monday 25 November 2013, Aurélien Gâteau wrote:
> Le lundi 25 novembre 2013 13:54:38 Mark Gaiser a écrit :
> > On Mon, Nov 25, 2013 at 10:45 AM, Aurélien Gâteau <agateau at kde.org> wrote:
> > > Le dimanche 24 novembre 2013 19:42:25 Mark Gaiser a écrit :
...
> > >> What should be done is detecting is the target is mounted via a slow
> > >> connection. So if it's mounted via the internet then "probablySlow"
> > >> should return true. On the other hand, i don't know if such checks are
> > >> in place and if they are not there, how to implement them.
> > > 
> > > Would be nice, but sounds difficult to do reliably, especially without
> > > generating too much traffic.
> > 
> > I doubt that.
> > If you do a ping or those kind of network tricks to figure out it's
> > speed. Then yes, it will cause some traffic. And i don't think you
> > should go for that.
> > 
> > What is possible - technically - is detecting if the connection is
> > made through a wired internet connection, local network connection or
> > even the same with wireless. Based on the "connection speed" that
> > NetworkManager is just showing you, you can make a first guess if the
> > connection is slow or fast. If you connect to an ip within the local
> > IP ranges (10.x.x.x, 192.168.x.x etc..) then you can assume a fast
> > local connection. Sure, that doesn't "need" to be true because you can
> > also have VPN setups where ip's might seem local, but are in fact
> > connected through the internet. There is no way to figure that out in
> > a sane manner so they would have "false positives". That doesn't
> > matter much. Those are the exceptions anyway. For other connections
> > you can first do an nslookup (or trace route) to see if they are local
> > or remote. Even then you can - yet again - argue that it's not going
> > to work if you have a local dns server.. Again not important because
> > those are the exceptions.
> 
> Sounds quite complicated: what about adding what Albert suggests until you
> are done with writing this slow-network detection code?

hmm, doesn't have to be really complicated, just a little bit more 
sophisticated than it is now, e.g. like the following, which is not too hard 
to do:
probablySlow = (NFS || CIFS) && (host is not in my own subnet || NIC is 
wireless)

Alex