* [Flent-users] Help with RRUL / TCP upload @ 2017-07-31 17:36 Emmanuel Blot 2017-07-31 18:13 ` Sebastian Moeller 0 siblings, 1 reply; 3+ messages in thread From: Emmanuel Blot @ 2017-07-31 17:36 UTC (permalink / raw) To: flent-users [-- Attachment #1: Type: text/plain, Size: 667 bytes --] Hi all, I’m a new flent user. I’m trying to check my SQM settings on OpenWRT against bufferbloat. For some reason, the TCP download and ping graphs for RRUL sessions give sensible results, whereas the TCP upload is broken into very small segments (even closer to dots actually), see the attached sample. What am I doing wrong ? command line: flent rrul -p all_scaled -l 60 -H host -o output.png $ flent --version Flent v1.0.1. Running on Python 3.5.2 (default, Oct 11 2016, 04:59:56) [GCC 4.2.1 Compatible Apple LLVM 8.0.0 (clang-800.0.38)]. Using matplotlib version 2.0.1 on numpy 1.12.1. Using PyQt5 version 5.9. Thanks, Manu. [-- Attachment #2: tcp_upload.png --] [-- Type: image/png, Size: 22024 bytes --] [-- Attachment #3: Type: text/plain, Size: 151 bytes --] _______________________________________________ Flent-users mailing list Flent-users@flent.org http://flent.org/mailman/listinfo/flent-users_flent.org ^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [Flent-users] Help with RRUL / TCP upload 2017-07-31 17:36 [Flent-users] Help with RRUL / TCP upload Emmanuel Blot @ 2017-07-31 18:13 ` Sebastian Moeller 2017-07-31 20:11 ` Emmanuel Blot 0 siblings, 1 reply; 3+ messages in thread From: Sebastian Moeller @ 2017-07-31 18:13 UTC (permalink / raw) To: Emmanuel Blot; +Cc: flent-users [-- Attachment #1.1: Type: text/plain, Size: 1520 bytes --] Hi, I believe you need to set the step size to something bigger: from "run-flent --help" -s STEP_SIZE, --step-size STEP_SIZE Measurement data point step size. For a slow link there are simply no data from netperf for a given "sampling" point and hence you get the intermittent plots. As far as I know there is unfortunately no way to specify the step size independent for both directions, so for non-choppy plots in your slow direction you will also get less time resolution in your fast direction... Hope that helps > On Jul 31, 2017, at 19:36, Emmanuel Blot <eblot.ml@gmail.com> wrote: > > Hi all, > > I’m a new flent user. > > I’m trying to check my SQM settings on OpenWRT against bufferbloat. > > For some reason, the TCP download and ping graphs for RRUL sessions > give sensible results, whereas the TCP upload is broken into very > small segments (even closer to dots actually), see the attached > sample. > > What am I doing wrong ? > > command line: flent rrul -p all_scaled -l 60 -H host -o output.png > > $ flent --version > Flent v1.0.1. > Running on Python 3.5.2 (default, Oct 11 2016, 04:59:56) [GCC 4.2.1 > Compatible Apple LLVM 8.0.0 (clang-800.0.38)]. > Using matplotlib version 2.0.1 on numpy 1.12.1. > Using PyQt5 version 5.9. > > > Thanks, > Manu. > _______________________________________________ > Flent-users mailing list > Flent-users@flent.org > http://flent.org/mailman/listinfo/flent-users_flent.org [-- Attachment #1.2.1: Type: text/html, Size: 2638 bytes --] [-- Attachment #1.2.2: tcp_upload.png --] [-- Type: image/png, Size: 22024 bytes --] [-- Attachment #2: Type: text/plain, Size: 151 bytes --] _______________________________________________ Flent-users mailing list Flent-users@flent.org http://flent.org/mailman/listinfo/flent-users_flent.org ^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [Flent-users] Help with RRUL / TCP upload 2017-07-31 18:13 ` Sebastian Moeller @ 2017-07-31 20:11 ` Emmanuel Blot 0 siblings, 0 replies; 3+ messages in thread From: Emmanuel Blot @ 2017-07-31 20:11 UTC (permalink / raw) To: Sebastian Moeller; +Cc: flent-users [-- Attachment #1.1.1: Type: text/plain, Size: 2152 bytes --] Hi Sebastian, Following your recommandations, I tried with several step-size values, with no luck. It does not seem to help the TCP upload graph. I do not want to bother ML users with the graphs, I copy them to Dropbox: https://www.dropbox.com/s/qxrdxvtqs7d6hfp/stepsize0.1.png?dl=0 https://www.dropbox.com/s/j54gaofor3ktjyt/stepsize0.5.png?dl=0 https://www.dropbox.com/s/i5fdqwldabx0820/stepsize0.05.png?dl=0 https://www.dropbox.com/s/dxf0ihlghy50d8b/stepsize1.png?dl=0 Thanks for your help, Manu. On Mon, Jul 31, 2017 at 8:13 PM, Sebastian Moeller <moeller0@gmx.de> wrote: > Hi, > > I believe you need to set the step size to something bigger: > from "run-flent --help" > -s STEP_SIZE, --step-size STEP_SIZE > Measurement data point step size. > > For a slow link there are simply no data from netperf for a given > "sampling" point and hence you get the intermittent plots. As far as I know > there is unfortunately no way to specify the step size independent for both > directions, so for non-choppy plots in your slow direction you will also > get less time resolution in your fast direction... > > Hope that helps > > > > > On Jul 31, 2017, at 19:36, Emmanuel Blot <eblot.ml@gmail.com> wrote: > > Hi all, > > I’m a new flent user. > > I’m trying to check my SQM settings on OpenWRT against bufferbloat. > > For some reason, the TCP download and ping graphs for RRUL sessions > give sensible results, whereas the TCP upload is broken into very > small segments (even closer to dots actually), see the attached > sample. > > What am I doing wrong ? > > command line: flent rrul -p all_scaled -l 60 -H host -o output.png > > $ flent --version > Flent v1.0.1. > Running on Python 3.5.2 (default, Oct 11 2016, 04:59:56) [GCC 4.2.1 > Compatible Apple LLVM 8.0.0 (clang-800.0.38)]. > Using matplotlib version 2.0.1 on numpy 1.12.1. > Using PyQt5 version 5.9. > > > Thanks, > Manu. > _______________________________________________ > Flent-users mailing list > Flent-users@flent.org > http://flent.org/mailman/listinfo/flent-users_flent.org > > > [-- Attachment #1.1.2: Type: text/html, Size: 3560 bytes --] [-- Attachment #1.2: tcp_upload.png --] [-- Type: image/png, Size: 22024 bytes --] [-- Attachment #2: Type: text/plain, Size: 151 bytes --] _______________________________________________ Flent-users mailing list Flent-users@flent.org http://flent.org/mailman/listinfo/flent-users_flent.org ^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2017-07-31 20:12 UTC | newest] Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2017-07-31 17:36 [Flent-users] Help with RRUL / TCP upload Emmanuel Blot 2017-07-31 18:13 ` Sebastian Moeller 2017-07-31 20:11 ` Emmanuel Blot
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