[Flent-users] [tohojo/flent] packet loss stats (#106)
notifications at github.com
Tue Nov 21 09:39:07 EET 2017
> 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
@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.
% ./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
You are receiving this because you commented.
Reply to this email directly or view it on GitHub:
-------------- next part --------------
An HTML attachment was scrubbed...
More information about the Flent-users