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channel bandwidth
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Hi Brent,

I think I have seen this info somewhere, but a search and tooling around a bit didn't turn anything up.

For Racecapture/track, does each additional channel added CAN and/or OBDII slow down the frequency of the data pull? My data never seems to get to the frequency set. Also, 10 is the max for each OBDII and CAN, correct?

Thanks!

Scott

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Hi,

While they both use the CAN bus, Direct CAN mapping and OBDII are different beasts.

Direct CAN mapping simply waits for a stream of CAN data to show up; when it does, it maps the data as soon as it sees it. There isn't a meaningful performance degradation *until* the CAN network gets saturated with messages.

OBDII is a request/reply protocol which does impact performance as you add channels; it's the nature of OBDII.

This blog post describes it in greater detail and explains how we've done every bit we can to optimize OBDII querying:
https://www.autosportlabs.com/racecapture-firmware-2-11-0-racecapture-app-1-9-0-released/

Hope this helps!


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Brent Picasso
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Thanks!

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