Re: [Owfs-developers] Simultaneous not working

[Mick S. <mi...@su...>]

OK I will log read times and see what that shows.

You say 'I also log if the error of the 1wire bus changes.' how do you 
do that?

No I don't really need to read that fast, this is just a test setup to 
get a better understanding so I can hopefully fine tune my main system.

There should not be anything else running.  I just tried running top at 
the same time, I monitored it at the point of the slow scan and didn't 
see anything else significant.

Mick

On 06/08/2020 09:06, Martin Patzak wrote:
> It looks like your timing has improved after all!
>
> in your original Python-code you could time every read for each sensor.
> I have also powered sensors and a read is usually faster than 0.1 seconds.
> I log in a file if the read took longer than 0.3 seconds, which is 
> almost never the case.
> I also log in the file if the whole reading loop took longer than 3 
> seconds, which again is almost never the case.
>
> I also log if the error of the 1wire bus changes.
>
> I read 25 sensors every full and every half minute, so maybe you could 
> implement a delay as well and see if things get more consistent.
> Do you need to read so fast in a loop for you application?
>
> What else is running on your machine? You could run top in parallel to 
> your python loop.
>
>