On Wed, 25 February 1998 at 6:27:07 +0000, John Kelly wrote:
> On Wed, 25 Feb 1998 12:24:11 +1030, Greg Lehey <grog@lemis.com> wrote:
>
>> On a normal network, a 10Mbit Ethernet network could outrun a 16Mbit
>> Token Ring network, simply because of the token-passing scheme that
>> Token Ring uses.
>
>> token passing isn't very efficient under any kind of load.
>
> Can you back this up with performance test data?
No, of course not, or I wouldn't have mentioned the theoretical side.
> It doesn't jive at all with test results Tolly published several years
> ago in Data Communications.
Did he have an axe to grind?
> He said token ring would run at full 16mb wire speed while Ethernet
> would degrade to 7mb because of collisions.
Right, and none of us have ever seen more than 7 Mb/s out of a 10 Mb
Ethernet, right? Any such statement *must* be qualified by the test
conditions.
Greg
To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-hackers" in the body of the message