FlightAware Discussions

Messages Received versus Messages Processed

Hello all,

Just wondering what the typical ratio might be for messages received vs messages processed for an ‘average’ user. It seems, though I have no reference, that my ~ 25% rate seems low… I have the --fix flag set in my config and typical results look like:

Jan 31 16:18:07 Rasp-ADSB2 piaware[486]: 6167258 msgs recv’d from dump1090-fa (4638 in last 5m); 6160012 msgs sent to FlightAware
Jan 31 16:23:02 Rasp-ADSB2 piaware[486]: mlat-client(32745): Receiver status: connected
Jan 31 16:23:02 Rasp-ADSB2 piaware[486]: mlat-client(32745): Server status: synchronized with 337 nearby receivers
Jan 31 16:23:02 Rasp-ADSB2 piaware[486]: mlat-client(32745): Receiver: 1049.1 msg/s received 258.4 msg/s processed (25%)
Jan 31 16:23:02 Rasp-ADSB2 piaware[486]: mlat-client(32745): Server: 0.8 kB/s from server 0.1kB/s TCP to server 2.9kB/s UDP to server
Jan 31 16:23:02 Rasp-ADSB2 piaware[486]: mlat-client(32745): Results: 383.6 positions/minute
Jan 31 16:23:02 Rasp-ADSB2 piaware[486]: mlat-client(32745): Aircraft: 47 of 83 Mode S, 91 of 132 ADS-B used
Jan 31 16:23:07 Rasp-ADSB2 piaware[486]: 6171928 msgs recv’d from dump1090-fa (4670 in last 5m); 6164682 msgs sent to FlightAware
Jan 31 16:28:07 Rasp-ADSB2 piaware[486]: 6176381 msgs recv’d from dump1090-fa (4453 in last 5m); 6169135 msgs sent to FlightAware
Jan 31 16:33:07 Rasp-ADSB2 piaware[486]: 6180610 msgs recv’d from dump1090-fa (4229 in last 5m); 6173364 msgs sent to FlightAware

Should I be concerned with the 25% average or had I better look for issues somewhere?

All the best,

Bob

That number is for the MLAT (multilateration) client. (https://flightaware.com/adsb/mlat/)
Mine is normally around 14%. (I probably have more ADS-B aircraft which broadcast their position. Such their messages are not processed by the MLAT client and the number goes down.)

In short: completely normal, nothing to worry about.

Regards

This just reflects the proportion of messages that are actually getting processed at the Python level, mlat-client goes to some effort to set filters such that only interesting messages make it up to the Python level for performance reasons. (For example, Mode S messages from aircraft that are not currently being requested by the server are filtered out early). A low percentage is actually a good thing here…

1 Like

Thanks !! I very much appreciate the rapid reply -

All the best,

Bob