RFC: Upgrade filter integer size to 64-bit

[Trisha Biswas]

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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