Re: [Freedos-user] FreeDOS is slow in Raspberry 4

[Swap J. <sw...@zo...>]

That's a nice suggestion. Thank you.

On 2020-03-19 16:59, David McMackins wrote:
> On 3/18/20 12:21 PM, Ralf Quint wrote:
>> On 3/18/2020 10:02 AM, Swap Jim via Freedos-user wrote:
>>>
>>> And in the meantime I'll try Fedora ARM, just in case it matters on
>>> the RPi4.
>> FAIK, Rasbian is the best supported distro on the RPi4B+ (hardware
>> wise). And beside that Raspberry.org itself otherwise only promotes
>> Ubuntu. Fedora/Pidora was dropped at least a couple of years ago, so I
>> am not sure that you will be able to yield any better results using an
>> ARM based Fedora.
>>
>> I still think that the problem is that QEMU doesn't take into account
>> the new capabilities of the 4B+ over the 3B+, not only CPU wise, but
>> also video (4K dual screen vs 1080p single), USB (3.0 vs 2.0) and
>> networking (true Gigabit Ethernet vs Gigiabit over USB 2.0, limited to
>> 300MBit/sec), and defaults (at least for the video part, maybe) to a
>> lower performing generic "fallback" mode.
>>
>> Ralf
>>
>>
> 
> It's worth noting that Raspbian is still only distributed in 32-bit
> form, failing to take full advantage of the 64-bit ARM processor on the
> Pi 4. If some other distribution is built for arm64, that may well
> perform better than Raspbian even though it is the best "supported" OS.
> 
> The 32-bit distribution was a conscious decision by the Raspberry Pi
> Foundation to maintain binary compatibility with older Pi boards so that
> newcomers would not be confused about which download to choose.
> 
> I don't know how much of an effect running in 32-bit mode has on the
> performance of the newer CPU, but I thought it was worth mentioning as a
> possible reason why an unofficial distribution might run better on a Pi 4.
> 
> Regards,
> 
> David E. McMackins II
> www.mcmackins.org www.delwink.com
> 
> 
> 
> _______________________________________________
> Freedos-user mailing list
> Fre...@li...
> https://lists.sourceforge.net/lists/listinfo/freedos-user
>