[Flent-users] [tohojo/flent] packet loss stats (#106)
notifications at github.com
Tue Nov 21 21:12:15 EET 2017
Pete Heist <notifications at github.com> writes:
>> On Nov 20, 2017, at 10:44 PM, flent-users <notifications at github.com> wrote:
>> A goal for me has been to be able to run Opus at 24 bit, 96Khz, with 2.7ms
>> sampling latency.
>> Actually getting 8 channels of that through a loaded box would be marvelous.
> Sounds like a musician. :) If it were CBR, I don’t know if this is a way to
> estimate it:
> 2.7ms ~= 370 packets/sec
Well, it might be 8 of those with different tuples.
> @128kbps, 56 bytes / packet (44 data + 12 RTP)
> @256kbps, 99 bytes / packet (87 data + 12 RTP)
> Just for fun, a ~256 kbps test between two sites, 50km apart, both using p2p
> WiFi to the Internet. For realtime audio, I guess it’s the maximums that could
> be the biggest issue.
Hah. I didn't say over wifi. That's impossible.
> % ./irtt client -i 2.7ms -l 99 -q -d 10s a.b.c.d
> [Connecting] connecting to a.b.c.d
> [Connected] connected to a.b.c.d:2112
> Min Mean Median Max Stddev
> --- ---- ------ --- ------
> RTT 10.16ms 15.57ms 14.14ms 71.37ms 4.89ms
> send delay 4.5ms 8.01ms 6.85ms 33.1ms 3.6ms
> receive delay 4.99ms 7.56ms 6.93ms 64.86ms 3.05ms
> IPDV (jitter) 1.06µs 2.52ms 2.56ms 56.16ms 2.55ms
> send IPDV 50ns 2.1ms 1.93ms 25.94ms 2.18ms
> receive IPDV 49ns 1.14ms 663µs 58.63ms 1.9ms
> send call time 38.2µs 83.2µs 13.46ms 310µs
> timer error 2ns 44.7µs 18.23ms 620µs
> server proc. time 33.6µs 47.4µs 242µs 18.1µs
> duration: 10.2s (wait 214.1ms)
> packets sent/received: 3647/3644 (0.08% loss)
> server packets received: 3644/3647 (0.08%/0.00% loss up/down)
> bytes sent/received: 361053/360756
> send/receive rate: 288.9 Kbps / 288.7 Kbps
> packet length: 99 bytes
> timer stats: 57/3704 (1.54%) missed, 1.65% error
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