RFC: Upgrade filter integer size to 64-bit

[Darren O'Connor]

Option 2 please

On Mon, 28 Mar 2022 at 09:55, Trisha Biswas <tbiswas at fastly.com> wrote:

> We do have use cases where we run BIRD in low memory environments with a
> lot of routes in the kernel, so moving everything to 64-bits could
> potentially hurt these scenarios. Option #3 would be very confusing, so
> we'd have to vote for keeping things as is.
>
> Thanks,
> Trisha
> --
>
> *Trisha Biswas* | Sr. Software Engineer, Network Systems
> fastly.com | @fastly <https://twitter.com/fastly> | LinkedIn
> <http://www.linkedin.com/company/fastly>
>
>
> On Mon, Mar 28, 2022 at 5:04 AM Mathew Heard <me at mheard.com> wrote:
>
>> Is there even any userbase running bird on embedded hardware (that might
>> be adversely affected)?
>>
>> Dn42 comes to mind. Perhaps? But realistically we aren't talking about
>> much of an increase surely?
>>
>> Other than that I like 64bit only.
>>
>> On Mon, 28 Mar 2022, 10:20 pm Douglas Fischer, <fischerdouglas at gmail.com>
>> wrote:
>>
>>> I need to agree with Toke!
>>> "having Bird behave differently on different archs is bound to be
>>> incredibly confusing..."
>>>
>>> And, on the other hand, what would be the downside of having everything
>>> in 64?
>>> Using a little more memory than might be the minimum usable?
>>>
>>> This kind of care I see being taken for applications that run platforms
>>> with serious memory limitations.
>>> I don't see that this is BIRD's niche.
>>>
>>>
>>> In a real scenario of high demand using BIRD, how much memory would be
>>> "wasted"?
>>> In these real high demand scenarios, who uses 32bit these days?
>>>
>>> I would worry more about CPU cycles.
>>>
>>> Em sáb., 26 de mar. de 2022 às 19:19, Toke Høiland-Jørgensen <
>>> toke at toke.dk> escreveu:
>>>
>>>> Maria Matejka <maria.matejka at nic.cz> writes:
>>>>
>>>> > Is there anybody who would try to convince me that I shouldn't make
>>>> > filter integers and route attribute integers both 64 bits wide?
>>>>
>>>> I think switching everything to 64-bits sounds quite sensible. Whatever
>>>> you do, please don't go with option 3, though, having Bird behave
>>>> differently on different archs is bound to be incredibly confusing... :)
>>>>
>>>> -Toke
>>>>
>>>
>>>
>>> --
>>> Douglas Fernando Fischer
>>> Engº de Controle e Automação
>>>
>>
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