I'll certainly file a bug report. I'll also run my test on Firefox 44 for the comparison.
Would you prefer a bug report for each finding or a single report? Cheers, Shane On Friday, November 4, 2016 at 10:37:45 AM UTC-4, Jan-Ivar Bruaroey wrote: > Thanks Shane for the detailed report! Please file a bug report here [1] > and be sure to include this information. > > I suspect this may have regressed in Firefox 45 when we updated to the > WebRTC 43 upstream branch, e.g. there's some evidence for rtt, see [2]. > Unfortunately, our automated tests aren't well equipped to detect timing > regressions, so this is valuable input. > > Btw, if you happen to have time, ability and inclination to compare your > results against Firefox 44 that would be most informative. > > We're also about to land another update to WebRTC 49, so stay tuned, and > here's hoping for improvements. > > Thanks again! > > ..: Jan-Ivar :. > > [1] https://bugzilla.mozilla.org/enter_bug.cgi?product=Core&component=WebRTC > [2] https://bugzilla.mozilla.org/show_bug.cgi?id=1241066#c1 > > On 11/1/16 1:13 PM, [email protected] wrote: > > Hello, > > > > I'm finding many perplexing inconsistencies while trying to gather > > statistics on an WebRTC connection, which is leading me to have very little > > confidence on their correctness. > > > > I've observed the following while studying the stats of an audio RTP > > connection (ie: the reports for source-outbound and receiver-inbound, plus > > their isRemote equivalents) from an https://apprtc.appspot.com session > > between two devices running Firefox (macOS 10.11.6 FF 49.0.2 -> Android 7.0 > > FF 49.0.2) on the same network: > > > > - Receiver inbound always displays a packetLost of 0, even while the source > > remote-inbound reports a packetLost that is non-zero > > > > - The jitter reported by source remote-inbound is much different than > > receiver inbound (ex: 0.4 vs 0.01, respectively) > > > > - The value of mozRtt in the source remote-inbound report is always equal > > to 1, even with an obvious lag > > > > - The bytes lost calculated from the source (outbound bytesSent minus > > remote-inbound bytesReceived) increases over time by a rather large gap > > (1,000,000 after a couple of minutes), even while the remote-inbound > > packetsLost value is stable > > > > - The bytes lost calculated from the receiver (remote-outbound bytesSent > > minus inbound bytesReceived) is negative and decreases over time by a > > rather large amount (-200,000 after a couple minutes), even while packets > > lost calculated in the same way is stable > > > > - Source outbound bytesSent is much bigger (~1,000,000 after a couple > > minutes) than source remote-inbound bytesReceived, even while the similar > > packets difference is nearly equal > > > > - Source outbound bytesSent is much bigger (~4,000,000 after a couple > > minutes) than the receiver remote-outbound bytesReceived, even while the > > similar packets difference is nearly equal > > > > ...hopefully the source/receiver inbound/outbound local/remote dances in my > > observations aren't too confusing. =) > > > > I do understand that there's a delay between the source and receiver > > (especially for the remote reports which are communicated through RTCP), > > however I've verified my above findings by watching the stats over a period > > of time (ie: using setInterval()), plus it couldn't possibly explain such > > wide gaps in information. > > > > Any information someone could provide, whether pointing out that I'm not > > understanding the meaning of the stats or linking me to some known bugs, > > would be hugely helpful! > > > > Shane Smith > > > > > > Source: > > > > { > > "outbound_rtcp_audio_0": { > > "id": "outbound_rtcp_audio_0", > > "timestamp": 1478007765342.98, > > "type": "inboundrtp", > > "isRemote": true, > > "mediaType": "audio", > > "remoteId": "outbound_rtp_audio_0", > > "ssrc": "840672959", > > "bytesReceived": 29865, > > "jitter": 0.172, > > "mozRtt": 1, > > "packetsLost": 7, > > "packetsReceived": 9955 > > }, > > "outbound_rtp_audio_0": { > > "id": "outbound_rtp_audio_0", > > "timestamp": 1478007770856.54, > > "type": "outboundrtp", > > "isRemote": false, > > "mediaType": "audio", > > "remoteId": "outbound_rtcp_audio_0", > > "ssrc": "840672959", > > "bytesSent": 341154, > > "packetsSent": 10338 > > } > > } > > > > > > Receiver: > > > > { > > "inbound_rtp_audio_0": { > > "id": "inbound_rtp_audio_0", > > "timestamp": 1478007772794.78, > > "type": "inboundrtp", > > "isRemote": false, > > "mediaType": "audio", > > "remoteId": "inbound_rtcp_audio_0", > > "ssrc": "840672959", > > "bytesReceived": 241316, > > "jitter": 0.004, > > "packetsLost": 0, > > "packetsReceived": 10492 > > }, > > "inbound_rtcp_audio_0": { > > "id": "inbound_rtcp_audio_0", > > "timestamp": 1478007771592.644, > > "type": "outboundrtp", > > "isRemote": true, > > "mediaType": "audio", > > "remoteId": "inbound_rtp_audio_0", > > "ssrc": "840672959", > > "bytesSent": 31128, > > "packetsSent": 10376 > > } > > } > > _______________________________________________ dev-media mailing list [email protected] https://lists.mozilla.org/listinfo/dev-media
