Messages per second far different between SkyAware Anywhere and local SkyAware

FlightAware ADS-B Flight Tracking
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Hey everyone! I’m trying to figure out if what I’m seeing is normal or not, so I’m really curious if others are seeing this same behavior.

When I use the local “PiAware SkyAware” interface by connecting directly to my Pi I see large numbers of messages per second received. Usually 500-600/second during the day.

When I bring up the online version of “SkyAware Anywhere” I only see around 2.0 messages per second.

The local version updates the map very quickly for each plane and I see them moving fluidly. Likewise the age column stays near zero for most planes. The online version slowly updates planes one-at-a-time and the ages can reach over 30 seconds before updating.

I also feed several other sites, and as a comparison ADS-B Exchange’s online stats shows around 160 messages per second around the same time frame. Other sites show decently large stats as well, so I don’t believe it is a network issue.

On the left is the online version; on the right is the local version. This screenshot shows them side-by-side at the same time.

FlightAware Stats
FlightAware Stats1920×974 421 KB

How does this compare for everyone else? Is this normal? Does FlightAware throttle the messages received from PiAware, or is there something wrong?

Thanks!
Jay

2

I am exhibiting similar behavior at the moment - localSkyAware = 500 message/sec vs. SA-Anywhere = 24 msg/sec.

The plane count for SA-Anywhere is also lower, but only by a bit … actually now that I look again, i see it matches one of my two sites, but the one with fewer planes reported.

I’ve not looked at this comparison before,so I don’t know if it’s normal or not.

3

They’re counting different things. Skyaware Anywhere consumes the data uploaded by piaware; piaware uploads summarized reports, not every message received. (It’s the same reason that the “position report” stats won’t match the actual number of position messages received)

4

That is normal because the values are processed completely different also to limit the used bandwidth

If you want the same numbers, feed to ADSBExchange, they are offering a “live” map accessible from outside.

5

I’m also showing similar results. Not sure how FlightAware handles translating the data input from the PiAware Receiver into visible results returned in SkyAware Anywhere, but I frequently see <1 message per second on SkyAware Anywhere with a local message rate of 60/s (or more).

I suspect it’s like others have already said: FlightAware is trying to limit their upload bandwidth usage or processes the data very differently when returning it via SkyAware Anywhere and is reporting a completely different type of ‘message’ (Notice: SkyAware Anywhere lists “Messages: X.X/sec” vs the local’s “ADS-B Message Rate: XXX.X/sec”.

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