[Flent-users] [tohojo/flent] packet loss stats (#106)

Dave Täht notifications at github.com
Fri Nov 10 22:53:07 EET 2017


Pete Heist <notifications at github.com> writes:

> I really like these PCEngines APU2 boards, and PTP HW timestamps. Now Peter,
> back to work... :)

What kernel is this, btw? A *lot* of useful stuff just landed in
net-next for network namespaces, which may mean I can try to validate
your results in emulation, also. My primitive (eyeballing the packet
captures of some tcp traces) jitter result in a 4 virtualized network
namespace, was 2-6us, but that's hardly trustable.

Knowing that basic measurement noise in your setup is < 107us is quite
helpful, I wonder what the sources are....

>
> sysadmin at apu2a:~$ ./irtt client -i 1ms -d 10s -q 10.9.0.2
> [Connecting] connecting to 10.9.0.2
> [Connected] connected to 10.9.0.2:2112
>
>                         Min    Mean  Median     Max  Stddev
>                         ---    ----  ------     ---  ------
>                 RTT   237µs   270µs   268µs   366µs    10µs
>          send delay   119µs   135µs   134µs   226µs  7.34µs
>       receive delay   113µs   135µs   134µs   227µs  6.25µs
>                                                            
>       IPDV (jitter)     1ns  9.47µs  6.32µs   107µs  9.86µs
>           send IPDV      0s  6.96µs  4.71µs  90.1µs  7.43µs
>        receive IPDV      0s  4.92µs  2.61µs  92.5µs  6.84µs
> ...
>
>> You are receiving this because you commented.
> Reply to this email directly, view it on GitHub, or mute the thread.


-- 
You are receiving this because you are subscribed to this thread.
Reply to this email directly or view it on GitHub:
https://github.com/tohojo/flent/issues/106#issuecomment-343582828
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://flent.org/pipermail/flent-users_flent.org/attachments/20171110/067d7217/attachment-0002.html>


More information about the Flent-users mailing list