[En-Nut-Discussion] RTL8019 Network performance degradation after OS upgrade (Re:Upgrading an old app to use Nut/OS 4.2.x instead of 3.4.x)

[Dusan Ferbas]

Hi,

definitely the changes in timers can have an influence. There are 
guys, who can explain it more deep.

Have you think about using only the new net portion (Nut/Net) with 
old Nut/OS ? We went his way in the past, because we want to use 
exact timers, that were in 3.9.x .

At 04:53 23.3.2007, Waschk,Kolja wrote:
>>I can compile and link the application with Nut/OS 4.2.1 without
>>errors after just adding the nutarch library in the Makefile,
>
>It seems to work flawlessly without needing any further modifications.
>There is only one drawback, and it's critical for my application - a
>network test that used to reach ~108 kByte/s throughput from the Nut to
>a PC (and still does, in the same environment, just with the old OS
>version) now reaches only 87 kByte/s.
>
>Any idea what could be the reason? I checked the compiler optimization
>settings, they're the same. Changes in timers, interrupt handlers, ...?
>
>Any hints are appreciated
>Kolja

Dusan