[Bloat] [Cerowrt-devel] flent testers wanted prior to next release

Joel Wirāmu Pauling joel at aenertia.net
Tue Dec 20 15:20:53 EST 2016

My biggest bug bear is that reliance on netperf/netserver with -DEMO mode
compilation time flag breaks compilation on recent RHEL and Fedora boxes
due to recent GCC incompatibilities.

Also the range of tests requiring fairly complex setup of external tools
which rely on java (DTG-ITG) etc also causes a bit of a headache to get a
full functional test bench up and running.

I have been attempting to introduce it as a test tool in corp/teclo
environments dominated by IXIA - but guess what Distro's are run in these

The only path to getting running on fedora is containers. There is a Docker
netperf and I did start down the road of dockerising flent, but don't have
a nice way of dealing with the GUI aspect.


On 21 December 2016 at 08:02, Dave Taht <dave.taht at gmail.com> wrote:

> Toke has been busy adding new features to the flent network test tool.
> I consider it *almost* stable enough for a new release. Some of the
> development has been focused on making the flent-gui much faster and
> more responsive (as our data sets have got larger), others on
> providing better default command line output, and there's other fixes
> across the board, including QT5 support.
> In particular, I fear we've broken windows users of flent. I would
> dearly like it if some more folk out there using flent could pull the
> latest git version and see if there are any new bugs or regressions in
> it, any of the the 87 tests, and the plotters, before freezing the
> code for a new year's release.
> github: https://github.com/tohojo/flent
> main site: https://flent.org/
> While you are at it, please feel free to stress out any of the flent
> servers as a target, give the new cake a shot and compare it against
> htb+fq_codel or your aqm of choice, or fiddle with the new wifi code,
> and share your data. tcp_nup, tcp_ndown, rrul, rrul_be remain the main
> tests, but the square wave one is turning out interesting.... :)
> And if you have any feature requests or bugs to file, please get them
> in soon to the github!
> We could also use better documentation and tutorials for use... some
> more example scripts leveraging things like the cpu_stats and
> qdisc_stats tools, and so on,
> Active public servers include:
> flent-freemont.bufferbloat.net
> ( this is colocated with flent-bbr-west which has bbr on by default - an
> interesting test might be testing both these servers at the same time
> via the rtt_fair* tests from your location)
> flent-dallas.bufferbloat.net
> flent-london.bufferbloat.net
> flent-tokyo.bufferbloat.net
> flent-newark.bufferbloat.net
> There are also netperf-west and netperf-east and netperf-eu and no
> doubt a few others.
> We plan to add a few BBR enabled servers over the holidays.
> The changelog so far:
> - Support PyQt5 in the GUI (and prefer it over PyQt4). If PyQt5 is not
> found, fall back to PyQt4.
> - Add new SummaryFormatter that outputs mean and median values for
> each data series. This is the new default formatter, meaning that its
> output will be shown after a test run if no other formatter (or plot)
> is specified.
> - Support multiprocessing in the GUI. When loading several plots at
> once, plotting will now be passed off to separate worker processes.
>   This allows plotting to use all the available processors on the
> machine, and speeds up loading of many plots tremendously (initial
> load is sped up by an order of magnitude). This change also means that
> re-plotting on config changes will be done dynamically in the
> background, which makes the GUI more responsive.
> - Make text completely black in the default colour scheme. This
> increases contrast, and helps legibility, especially on printed
> figures.
> - Some internal code changes: Port command line parser from the old
> optparse class to the newer argparse, and fix a bunch of linter
> --
> Dave Täht
> Let's go make home routers and wifi faster! With better software!
> http://blog.cerowrt.org
> _______________________________________________
> Cerowrt-devel mailing list
> Cerowrt-devel at lists.bufferbloat.net
> https://lists.bufferbloat.net/listinfo/cerowrt-devel
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