On Wed, Apr 11, 2001 at 11:04:04PM +0400, kuznet@ms2.inr.ac.ru wrote:
> > In my experiments linux simply sets mss=mtu-40 at the start of ethernet
> > connections. I do not know why, but belive it's ok. How the version of
> > kernel and configuration options can affect mss later?
[...]
> The problem begins f.e. when mss is less and packet arrives on ethernet.
> It eats the same 1.5k of memory, but carries only ~mss bytes of tcp payload.
> See? We do not know this forward, advertise large window, have not enough
> rcvbuf to get it filled and cannot do anything but dropping new packets.
However, I can't understand the dependency upon the kernel version, etc...
Let me steak on this question again. In my experiments I found the
dependency on the keepalive setting for connection on 2.2.17:
mtu 382 + keepalive yes -> loss
mtu 382 + keepalive no -> ok
I made 2 tries for each setting. Does your model of "mss/mtu bug" cover
such a picture? If the answer is "yes", I am almost satisfied. :-)
If this behaviour is not deterministic, and is driven by probability,
does it mean that I can get other results with large number of tests?
-- Eugene Berdnikov - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/