On Wed, Sep 11, 2013 at 12:32 AM, Richard Hacker <[email protected]> wrote: > Can you find anything in the logs for dlsd?
I am having trouble finding the DLS log files. I see the file "logging" in the job directory, but it is empty. Do you know where I can find any log files? Thank You, Johnathan Van Why Dynamic Robotics Laboratory Oregon State University > Am 09/09/2013 08:04 PM, schrieb Johnathan Van Why: > >> On Mon, Sep 9, 2013 at 7:39 AM, Richard Hacker <[email protected]> wrote: >>> >>> >>> Are you using a multi-processor system? If so, can try using HPET >>> (although this timing system is buggy by design - was developed together >>> with Microsoft ;) ) >> >> >> I switched to the HPET, and it still drops data. >> >> Thank You, >> Johnathan Van Why >> Dynamic Robotics Laboratory >> Oregon State University >> >>> Am 09/06/2013 09:25 PM, schrieb Johnathan Van Why: >>> >>>> On Thu, Sep 5, 2013 at 11:38 PM, Richard Hacker <[email protected]> >>>> wrote: >>>>> >>>>> >>>>> What is you underlying real-time operating system? >>>> >>>> >>>> >>>> I am doing my testing on Linux, patched with PREEMPT_RT for realtime. >>>> >>>>> The DLS has a problem when the RT system influences time on the PC. >>>>> This has >>>>> been experienced with RTAI. >>>>> >>>>> Ways to fix it? Watch the system's clock while the control system is >>>>> loaded >>>>> and make sure it is not "pulled" in any way. >>>> >>>> >>>> >>>> I have confirmed that there is no clock drift (note: the kernel's >>>> clocksource is the TSC). I disabled NTP and re-ran the test, with the >>>> same results (lost data and no clock drift). >>>> >>>> Do you have any other ideas? >>>> >>>> Thank you for the help, >>>> Johnathan Van Why >>>> Dynamic Robotics Laboratory >>>> Oregon State University >>>> >>>>> Am 09/06/2013 04:33 AM, schrieb Johnathan Van Why: >>>>>> >>>>>> >>>>>> >>>>>> We have been benchmarking EtherLab (we're considering switching to it >>>>>> as our robot control system), and have noticed that the Data Logging >>>>>> Service has been dropping data. We created over 100 independent >>>>>> sources in a Simulink model, deployed to EtherLab, and logged all >>>>>> sources at 1 kHz (over 400 KB/s total). >>>>>> >>>>>> After looking at the log data, we noticed that a significant amount of >>>>>> data was dropped. Every 15 minutes, the time variable would jump by 3 >>>>>> minutes; the total data we collected was significantly less than we >>>>>> expected for the duration of the run. >>>>>> >>>>>> Is this a known issue? Are we asking too much of the Data Logging >>>>>> Service? Is there anything we can try in order to obtain reliable >>>>>> logging at this data rate? >>>>>> >>>>>> Thank you for any help, >>>>>> Johnathan Van Why >>>>>> Dynamic Robotics Laboratory >>>>>> Oregon State University >>>>>> _______________________________________________ >>>>>> etherlab-users mailing list >>>>>> [email protected] >>>>>> http://lists.etherlab.org/mailman/listinfo/etherlab-users >>>>>> >>>>> >>>>> Mit freundlichem Gruß >>>>> >>>>> Richard Hacker >>>>> >>>>> -- >>>>> >>>>> ------------------------------------------------------------------------ >>>>> >>>>> Richard Hacker M.Sc. >>>>> [email protected] >>>>> Tel.: +49 201 / 36014-16 >>>>> >>>>> Ingenieurgemeinschaft IgH >>>>> Gesellschaft für Ingenieurleistungen mbH >>>>> Heinz-Bäcker-Str. 34 >>>>> D-45356 Essen >>>>> >>>>> Amtsgericht Essen HRB 11500 >>>>> USt-Id.-Nr.: DE 174 626 722 >>>>> Geschäftsführung: >>>>> - Dr.-Ing. T. Finke, >>>>> - Dr.-Ing. W. Hagemeister >>>>> Tel.: +49 201 / 360-14-0 >>>>> http://www.igh-essen.com >>>>> >>>>> >>>>> ------------------------------------------------------------------------ >>> >>> >>> >>> Mit freundlichem Gruß >>> >>> Richard Hacker >>> >>> -- >>> ------------------------------------------------------------------------ >>> >>> Richard Hacker M.Sc. >>> [email protected] >>> Tel.: +49 201 / 36014-16 >>> >>> Ingenieurgemeinschaft IgH >>> Gesellschaft für Ingenieurleistungen mbH >>> Heinz-Bäcker-Str. 34 >>> D-45356 Essen >>> >>> Amtsgericht Essen HRB 11500 >>> USt-Id.-Nr.: DE 174 626 722 >>> Geschäftsführung: >>> - Dr.-Ing. T. Finke, >>> - Dr.-Ing. W. Hagemeister >>> Tel.: +49 201 / 360-14-0 >>> http://www.igh-essen.com >>> >>> ------------------------------------------------------------------------ > > > Mit freundlichem Gruß > > Richard Hacker > > -- > ------------------------------------------------------------------------ > > Richard Hacker M.Sc. > [email protected] > Tel.: +49 201 / 36014-16 > > Ingenieurgemeinschaft IgH > Gesellschaft für Ingenieurleistungen mbH > Heinz-Bäcker-Str. 34 > D-45356 Essen > > Amtsgericht Essen HRB 11500 > USt-Id.-Nr.: DE 174 626 722 > Geschäftsführung: > - Dr.-Ing. T. Finke, > - Dr.-Ing. W. Hagemeister > Tel.: +49 201 / 360-14-0 > http://www.igh-essen.com > > ------------------------------------------------------------------------ _______________________________________________ etherlab-users mailing list [email protected] http://lists.etherlab.org/mailman/listinfo/etherlab-users
