Re: Calc record with two CP input links ending up in inconsistent state

[Érico Nogueira Rolim via Tech-talk <tech-talk at aps.anl.gov>]

On 17/02/2025 21:15, Michael Davidsaver wrote:
> On 2/17/25 12:54, Érico Nogueira Rolim via Tech-talk wrote:
>> I originally considered that using multiple CP input links would
>> guarantee eventual consistency; was I wrong in this assumption, or is it
>> likely that there is a bug in the record/link implementation?
>
> What you assume should be true, but indeed there is at least one bug.
>
> https://urldefense.us/v3/__https://github.com/epics-base/epics-base/issues/557__;!!G_uCfscf7eWS!cnyYoaXwbkd_lCH2p5CCZ_PfLfy84MTWSGa0AmnpotPXn1C6JwSvE5W6ydUWlCa_0YvCINcSnv5BdBrfKzDiZqkcglM$ 


Huh, I think I read that issue at one point. It's probably what made me
use the "eventual consistency" term.


>
> Could you please retest with this PR?
>
> https://urldefense.us/v3/__https://github.com/epics-base/epics-base/pull/559__;!!G_uCfscf7eWS!cnyYoaXwbkd_lCH2p5CCZ_PfLfy84MTWSGa0AmnpotPXn1C6JwSvE5W6ydUWlCa_0YvCINcSnv5BdBrfKzDijS6xbIs$ 
>

It will take a while for me to be able to test it; I will need either a
machine shift in order to have more samples, or to figure out exactly
how to reproduce the error. I'm glad there is a PR to test though :)

Will keep you updated when I have news!


Thanks,

Érico


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