[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
> [Connecting] connecting to
> [Connected] connected to
>                         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:
-------------- 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